diff --git a/README.md b/README.md
index 6d9f82ed5b3cbbf8bf123097313e1628b0fcd1d7..e08e3460f1d458e8eae5826bf58921698f99014b 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ The room should be ventilated as soon as one LED turns red.
 
 The *CO<sub>2</sub> Ampel* can:
 
-* Display CO2 concentration on LED ring.
+* Display CO<sub>2</sub> concentration on LED ring.
 * Allow calibration.
 * Get current time over [NTP](https://en.wikipedia.org/wiki/Network_Time_Protocol)
 * Send data over [MQTT](https://en.wikipedia.org/wiki/MQTT).
@@ -76,15 +76,15 @@ In Arduino IDE *Serial Monitor* or PlatformIO *Monitor*, type `help` + <kbd>Ente
 * `calibrate` (Starts calibration process).
 * `calibrate 600` (Starts calibration process, to given ppm).
 * `calibrate! 600` (Calibrates right now, to given ppm).
-* `co2 1500` (Sets co2 level, for debugging purposes).
+* `co2 1500` (Sets CO<sub>2</sub> level, for debugging purposes).
 * `color 0xFF0015` (Shows color, specified as RGB, for debugging).
 * `csv 60` (Sets CSV writing interval, in s).
 * `format_filesystem` (Deletes the whole filesystem).
 * `free` (Displays available heap space).
+* `led 0/1` (Turns LEDs on/off).
 * `local_ip` (Displays local IP and current SSID).
 * `lora 300` (Sets LoRaWAN sending interval, in s).
 * `mqtt 60` (Sets MQTT sending interval, in s).
-* `night_mode` (Toggles night mode on/off).
 * `reset` (Restarts the ESP).
 * `reset_scd` (Resets SCD30).
 * `send_local_ip` (Sends local IP and SSID via MQTT. Can be useful to find sensor).
diff --git a/ampel-firmware/ampel-firmware.h b/ampel-firmware/ampel-firmware.h
index 41fe46bd593aa82a1a3c133e08f1fabe88e7b490..abe783aea97c4aa368cd0eb940dda401b131375a 100644
--- a/ampel-firmware/ampel-firmware.h
+++ b/ampel-firmware/ampel-firmware.h
@@ -33,6 +33,7 @@
 #endif
 
 #include "util.h"
+#include "ntp.h"
 #include "sensor_console.h"
 #include "co2_sensor.h"
 #include "led_effects.h"
diff --git a/ampel-firmware/ampel-firmware.ino b/ampel-firmware/ampel-firmware.ino
index 40efd11ee447d7de79a494e510ab52e756fbf7c8..c055bcb8aa8808b4b406aceea195c4b29ad31b35 100644
--- a/ampel-firmware/ampel-firmware.ino
+++ b/ampel-firmware/ampel-firmware.ino
@@ -88,10 +88,7 @@ void setup() {
 #ifdef AMPEL_WIFI
   wifi::connect(ampel.sensorId);
 
-  Serial.print(F("WiFi - Status: "));
-  Serial.println(WiFi.status());
-
-  if (WiFi.status() == WL_CONNECTED) {
+  if (wifi::connected()) {
 #  ifdef AMPEL_HTTP
     web_server::initialize();
 #  endif
@@ -203,7 +200,7 @@ void checkFlashButton() {
 
 void keepServicesAlive() {
 #ifdef AMPEL_WIFI
-  if (WiFi.status() == WL_CONNECTED) {
+  if (wifi::connected()) {
 #  if defined(ESP8266)
     //NOTE: Sadly, there seems to be a bug in the current MDNS implementation.
     // It stops working after 2 minutes. And forcing a restart leads to a memory leak.
diff --git a/ampel-firmware/co2_sensor.cpp b/ampel-firmware/co2_sensor.cpp
index 25a7102e19088ae65487234f248fada2ed25fd29..ab58ebf344711c335ecfd70e47857e3975ebfd55 100644
--- a/ampel-firmware/co2_sensor.cpp
+++ b/ampel-firmware/co2_sensor.cpp
@@ -1,5 +1,15 @@
 #include "co2_sensor.h"
 
+#include "config.h"
+#include "ntp.h"
+#include "led_effects.h"
+#include "sensor_console.h"
+#include <Wire.h>
+
+// The SCD30 from Sensirion is a high quality Nondispersive Infrared (NDIR) based CO₂ sensor capable of detecting 400 to 10000ppm with an accuracy of ±(30ppm+3%).
+// https://github.com/sparkfun/SparkFun_SCD30_Arduino_Library
+#include "src/lib/SparkFun_SCD30_Arduino_Library/src/SparkFun_SCD30_Arduino_Library.h"  // From: http://librarymanager/All#SparkFun_SCD30
+
 namespace config {
   // UPPERCASE values should be defined in config.h
   uint16_t measurement_timestep = MEASUREMENT_TIMESTEP; // [s] Value between 2 and 1800 (range for SCD30 sensor).
diff --git a/ampel-firmware/co2_sensor.h b/ampel-firmware/co2_sensor.h
index d9eff8724f018e885f260060aaed58678c814092..2aea223bdebe2eb9e12254efc741afb331af7f51 100644
--- a/ampel-firmware/co2_sensor.h
+++ b/ampel-firmware/co2_sensor.h
@@ -1,14 +1,7 @@
 #ifndef CO2_SENSOR_H_
 #define CO2_SENSOR_H_
 
-// The SCD30 from Sensirion is a high quality Nondispersive Infrared (NDIR) based CO₂ sensor capable of detecting 400 to 10000ppm with an accuracy of ±(30ppm+3%).
-// https://github.com/sparkfun/SparkFun_SCD30_Arduino_Library
-#include "src/lib/SparkFun_SCD30_Arduino_Library/src/SparkFun_SCD30_Arduino_Library.h"  // From: http://librarymanager/All#SparkFun_SCD30
-#include "config.h"
-#include "led_effects.h"
-#include "util.h"
-#include "sensor_console.h"
-#include <Wire.h>
+#include <stdint.h> // For uint16_t
 
 namespace config {
   extern uint16_t measurement_timestep; // [s] Value between 2 and 1800 (range for SCD30 sensor)
@@ -18,7 +11,6 @@ namespace config {
 }
 
 namespace sensor {
-  extern SCD30 scd30;
   extern uint16_t co2;
   extern float temperature;
   extern float humidity;
diff --git a/ampel-firmware/config.public.h b/ampel-firmware/config.public.h
index 44a2bc95b176e1fe6d281a5a1d72dfa7d9c8fd86..cf0325f388367658469cede1eb3b29874eca83bd 100644
--- a/ampel-firmware/config.public.h
+++ b/ampel-firmware/config.public.h
@@ -33,7 +33,6 @@
 #  define MEASUREMENT_TIMESTEP 60 // [s] Value between 2 and 1800 (range for SCD30 sensor)
 
 // How often should measurements be appended to CSV ?
-// Probably a good idea to use a multiple of MEASUREMENT_TIMESTEP, so that averages can be calculated
 // Set to 0 if you want to send values after each measurement
 // WARNING: Writing too often might damage the ESP memory
 #  define CSV_INTERVAL 300 // [s]
@@ -54,7 +53,7 @@
 
 // Should the sensor try to calibrate itself?
 // Sensirion recommends 7 days of continuous readings with at least 1 hour a day of 'fresh air' for self-calibration to complete.
-#  define AUTO_CALIBRATE_SENSOR true // [true / false]
+#  define AUTO_CALIBRATE_SENSOR false // [true / false]
 
 /**
  * LEDs
@@ -106,12 +105,12 @@
 #  define ALLOW_MQTT_COMMANDS false
 
 // How often should measurements be sent to MQTT server?
-// Probably a good idea to use a multiple of MEASUREMENT_TIMESTEP, so that averages can be calculated
 // Set to 0 if you want to send values after each measurement
 // #  define MQTT_SENDING_INTERVAL MEASUREMENT_TIMESTEP * 5 // [s]
 #  define MQTT_SENDING_INTERVAL 60 // [s]
 #  define MQTT_SERVER "test.mosquitto.org"  // MQTT server URL or IP address
 #  define MQTT_PORT 8883
+#  define MQTT_ENCRYPTED true // Set to false for unencrypted MQTT (e.g. with port 1883). If undefined, MQTT_ENCRYPTED will be set to true.
 #  define MQTT_USER ""
 #  define MQTT_PASSWORD ""
 
@@ -120,10 +119,7 @@
  */
 
 // 1) Requires "MCCI LoRaWAN LMIC library", which will be automatically used with PlatformIO but should be added in "Arduino IDE".
-// 2) Region and transceiver type should be specified in:
-//     * Arduino/libraries/MCCI_LoRaWAN_LMIC_library/project_config/lmic_project_config.h for Arduino IDE
-//     * platformio.ini for PlatformIO
-//    See https://github.com/mcci-catena/arduino-lmic#configuration for more information
+// 2) If you need to, region and transceiver type can be specified in lorawan.cpp. Default is "Europe 868"
 // 3) It has been tested with "TTGO ESP32 SX1276 LoRa 868" and will only work with an ESP32 + LoRa modem
 // 4) In order to use LoRaWAN, a gateway should be close to the co2ampel, and an account, an application and a device should be registered,
 //      e.g. on https://www.thethingsnetwork.org/docs/applications/
diff --git a/ampel-firmware/csv_writer.cpp b/ampel-firmware/csv_writer.cpp
index d0828a40999dc7326d1ce19f9a4808be10dd6852..35972cde0447c34b6ff32a14a4627b684730b3b5 100644
--- a/ampel-firmware/csv_writer.cpp
+++ b/ampel-firmware/csv_writer.cpp
@@ -1,5 +1,10 @@
 #include "csv_writer.h"
 
+#include "config.h"
+#include "ntp.h"
+#include "led_effects.h"
+#include "sensor_console.h"
+
 namespace config {
   // Values should be defined in config.h
   uint16_t csv_interval = CSV_INTERVAL; // [s]
diff --git a/ampel-firmware/csv_writer.h b/ampel-firmware/csv_writer.h
index f85f34641aaf4f1915e773ad7c1675f846ecfa90..dcee7130c27a23e66d20fb8b390889b0fd53468e 100644
--- a/ampel-firmware/csv_writer.h
+++ b/ampel-firmware/csv_writer.h
@@ -11,11 +11,6 @@
 #  error Board should be either ESP8266 or ESP832
 #endif
 
-#include "config.h"
-#include "util.h"
-#include "led_effects.h"
-#include "sensor_console.h"
-
 namespace config {
   extern uint16_t csv_interval; // [s]
 }
diff --git a/ampel-firmware/led_effects.cpp b/ampel-firmware/led_effects.cpp
index 1a7eb4a3cef465a5eba2ab1f93cf2ffe15e546d8..4d0d59958aa06b05c54e7b86b406a4e03ea73750 100644
--- a/ampel-firmware/led_effects.cpp
+++ b/ampel-firmware/led_effects.cpp
@@ -1,4 +1,13 @@
 #include "led_effects.h"
+
+#include "config.h"
+#include "sensor_console.h"
+
+// Adafruit NeoPixel (Arduino library for controlling single-wire-based LED pixels and strip)
+// https://github.com/adafruit/Adafruit_NeoPixel
+// Documentation : http://adafruit.github.io/Adafruit_NeoPixel/html/class_adafruit___neo_pixel.html
+#include "src/lib/Adafruit_NeoPixel/Adafruit_NeoPixel.h"
+
 /*****************************************************************
  * Configuration                                                 *
  *****************************************************************/
@@ -12,7 +21,7 @@ namespace config {
   const uint8_t brightness_amplitude = config::max_brightness - config::min_brightness;
   const int kitt_tail = 3; // How many dimmer LEDs follow in K.I.T.T. wheel
   const uint16_t poor_air_quality_ppm = 1600; // Above this threshold, LED breathing effect is faster.
-  bool night_mode = false; //NOTE: Use a class instead? NightMode could then be another state.
+  bool display_led = true; // Will be set to false during "night mode".
 
 #if !defined(LED_COUNT)
 #  define LED_COUNT 12
@@ -78,7 +87,7 @@ namespace led_effects {
   }
 
   void showColor(int32_t color) {
-    config::night_mode = true; // In order to avoid overwriting the desired color next time CO2 is displayed
+    config::display_led = false; // In order to avoid overwriting the desired color next time CO2 is displayed
     pixels.setBrightness(255);
     pixels.fill(color);
     pixels.show();
@@ -88,17 +97,21 @@ namespace led_effects {
     pixels.begin();
     pixels.setBrightness(config::max_brightness);
     LEDsOff();
-    sensor_console::defineCommand("night_mode", toggleNightMode, F("(Toggles night mode on/off)"));
+    sensor_console::defineIntCommand("led", turnLEDsOnOff, F("0/1 (Turns LEDs on/off)"));
     sensor_console::defineIntCommand("color", showColor, F("0xFF0015 (Shows color, specified as RGB, for debugging)"));
   }
 
   void toggleNightMode() {
-    config::night_mode = !config::night_mode;
-    if (config::night_mode) {
-      Serial.println(F("NIGHT MODE!"));
-      LEDsOff();
+    turnLEDsOnOff(!config::display_led);
+  }
+
+  void turnLEDsOnOff(int32_t display_led) {
+    config::display_led = display_led;
+    if (config::display_led) {
+      Serial.println(F("LEDs are on!"));
     } else {
-      Serial.println(F("DAY MODE!"));
+      Serial.println(F("Night mode!"));
+      LEDsOff();
     }
   }
 
@@ -106,7 +119,7 @@ namespace led_effects {
   void showWaitingLED(uint32_t color) {
     using namespace config;
     delay(80);
-    if (night_mode) {
+    if (!display_led) {
       return;
     }
     static uint16_t kitt_offset = 0;
@@ -162,7 +175,7 @@ namespace led_effects {
    * Fills the whole ring with green, yellow, orange or black, depending on co2 input and CO2_TICKS.
    */
   void displayCO2color(uint16_t co2) {
-    if (config::night_mode) {
+    if (!config::display_led) {
       return;
     }
     pixels.setBrightness(config::max_brightness);
@@ -177,7 +190,7 @@ namespace led_effects {
   }
 
   void showRainbowWheel(uint16_t duration_ms) {
-    if (config::night_mode) {
+    if (!config::display_led) {
       return;
     }
     static uint16_t wheel_offset = 0;
@@ -195,7 +208,7 @@ namespace led_effects {
   }
 
   void redAlert() {
-    if (config::night_mode) {
+    if (!config::display_led) {
       onBoardLEDOn();
       delay(500);
       onBoardLEDOff();
@@ -218,7 +231,7 @@ namespace led_effects {
    * been released or after every LED has been turned off.
    */
   bool countdownToZero() {
-    if (config::night_mode) {
+    if (!config::display_led) {
       Serial.println(F("Night mode. Not doing anything."));
       delay(1000); // Wait for a while, to avoid coming back to this function too many times when button is pressed.
       return false;
diff --git a/ampel-firmware/led_effects.h b/ampel-firmware/led_effects.h
index 8f04d83e751a9de5f2110653d10a794d5494bd36..9f681a66c28fe80ce3880123f985acf50ffc8526 100644
--- a/ampel-firmware/led_effects.h
+++ b/ampel-firmware/led_effects.h
@@ -1,13 +1,7 @@
 #ifndef LED_EFFECTS_H_INCLUDED
 #define LED_EFFECTS_H_INCLUDED
-#include <Arduino.h>
-#include "config.h"
-#include "sensor_console.h"
 
-// Adafruit NeoPixel (Arduino library for controlling single-wire-based LED pixels and strip)
-// https://github.com/adafruit/Adafruit_NeoPixel
-// Documentation : http://adafruit.github.io/Adafruit_NeoPixel/html/class_adafruit___neo_pixel.html
-#include "src/lib/Adafruit_NeoPixel/Adafruit_NeoPixel.h"
+#include <stdint.h> // For uint32_t
 
 namespace color {
   const uint32_t red = 0xFF0000;
@@ -22,6 +16,7 @@ namespace led_effects {
   void onBoardLEDOff();
   void onBoardLEDOn();
   void toggleNightMode();
+  void turnLEDsOnOff(int32_t);
   void LEDsOff();
 
   void setupRing();
diff --git a/ampel-firmware/lorawan.cpp b/ampel-firmware/lorawan.cpp
index 746893b3698137ff14417158e5a2728fd8ad4a25..5dfad5e5c1fadb1df3018bc142e438ef7a55a9a9 100644
--- a/ampel-firmware/lorawan.cpp
+++ b/ampel-firmware/lorawan.cpp
@@ -1,7 +1,42 @@
 #include "lorawan.h"
+
 #if defined(AMPEL_LORAWAN) && defined(ESP32)
 
+#include "led_effects.h"
+#include "sensor_console.h"
+#include "util.h"
+#include "ntp.h"
+
+/*** Define region and transceiver type, and ignore lmic_project_config.h from lmic library ***/
+// Those values are probably okay if you're in Europe.
+#define ARDUINO_LMIC_PROJECT_CONFIG_H_SUPPRESS
+#define CFG_eu868 1
+#define CFG_sx1276_radio 1
+/****************************************************************************************/
+
+// Requires "MCCI LoRaWAN LMIC library", which will be automatically used with PlatformIO but should be added in "Arduino IDE"
+// Tested successfully with v3.2.0 and connected to a thethingsnetwork.org app.
+#include <lmic.h>
+#include <SPI.h>
+#include <hal/hal.h>
+#include <arduino_lmic_hal_boards.h>
+
 namespace config {
+#if defined(CFG_eu868)
+  const char *lorawan_frequency_plan = "Europe 868";
+#elif defined(CFG_us915)
+  const char *lorawan_frequency_plan = "US 915";
+#elif defined(CFG_au915)
+  const char *lorawan_frequency_plan = "Australia 915";
+#elif defined(CFG_as923)
+  const char *lorawan_frequency_plan = "Asia 923";
+#elif defined(CFG_kr920)
+  const char *lorawan_frequency_plan = "Korea 920";
+#elif defined(CFG_in866)
+  const char *lorawan_frequency_plan = "India 866";
+#else
+#  error "Region should be specified"
+#endif
   // Values should be defined in config.h
   uint16_t lorawan_sending_interval = LORAWAN_SENDING_INTERVAL; // [s]
 
@@ -36,7 +71,9 @@ namespace lorawan {
   char last_transmission[23] = "";
 
   void initialize() {
-    Serial.println(F("Starting LoRaWAN. Frequency plan : " LMIC_FREQUENCY_PLAN " MHz."));
+    Serial.print(F("Starting LoRaWAN. Frequency plan : "));
+    Serial.print(config::lorawan_frequency_plan);
+    Serial.println(F(" MHz."));
 
     // More info about pin mapping : https://github.com/mcci-catena/arduino-lmic#pin-mapping
     // Has been tested successfully with ESP32 TTGO LoRa32 V1, and might work with other ESP32+LoRa boards.
@@ -51,7 +88,7 @@ namespace lorawan {
   }
 
   // Checks if OTAA is connected, or if payload should be sent.
-  // NOTE: while a transaction is in process (i.e. until the TXcomplete event has been received, no blocking code (e.g. delay loops etc.) are allowed, otherwise the LMIC/OS code might miss the event.
+  // NOTE: while a transaction is in process (i.e. until the TXcomplete event has been received), no blocking code (e.g. delay loops etc.) are allowed, otherwise the LMIC/OS code might miss the event.
   // If this rule is not followed, a typical symptom is that the first send is ok and all following ones end with the 'TX not complete' failure.
   void process() {
     os_runloop_once();
diff --git a/ampel-firmware/lorawan.h b/ampel-firmware/lorawan.h
index 45f462b2ef761066797ccd2ff114762088b5c628..ed005f5c3a09e38591009e487b97a6a74e2d2b28 100644
--- a/ampel-firmware/lorawan.h
+++ b/ampel-firmware/lorawan.h
@@ -3,39 +3,15 @@
 
 #include "config.h"
 
-#if defined(AMPEL_LORAWAN) && defined(ESP32)
-#include <Arduino.h>
-// Requires "MCCI LoRaWAN LMIC library", which will be automatically used with PlatformIO but should be added in "Arduino IDE".
-// Tested successfully with v3.2.0 and connected to a thethingsnetwork.org app.
-#include <lmic.h>
-#include <hal/hal.h>
-#include <arduino_lmic_hal_boards.h>
-#include <SPI.h>
+#  if defined(AMPEL_LORAWAN) && defined(ESP32)
 
-#include "led_effects.h"
-#include "sensor_console.h"
-#include "util.h"
+#include <stdint.h> // For uint32_t & uint16_t
 
 namespace config {
   extern uint16_t lorawan_sending_interval; // [s]
+  extern const char *lorawan_frequency_plan; // e.g. "Europe 868"
 }
 
-#if defined(CFG_eu868)
-#  define LMIC_FREQUENCY_PLAN "Europe 868"
-#elif defined(CFG_us915)
-#  define LMIC_FREQUENCY_PLAN "US 915"
-#elif defined(CFG_au915)
-#  define LMIC_FREQUENCY_PLAN "Australia 915"
-#elif defined(CFG_as923)
-#  define LMIC_FREQUENCY_PLAN "Asia 923"
-#elif defined(CFG_kr920)
-#  define LMIC_FREQUENCY_PLAN "Korea 920"
-#elif defined(CFG_in866)
-#  define LMIC_FREQUENCY_PLAN "India 866"
-#else
-#  error "Region should be specified"
-#endif
-
 namespace lorawan {
   extern bool waiting_for_confirmation;
   extern bool connected;
@@ -47,5 +23,5 @@ namespace lorawan {
   void setLoRaInterval(int32_t sending_interval);
 }
 
-#endif
+#  endif
 #endif
diff --git a/ampel-firmware/mqtt.cpp b/ampel-firmware/mqtt.cpp
index 8c61696569dbf14dbf520ff4dacd0f462ec86b03..57b5cd026f57586339e3d90eeb91aa204c242300 100644
--- a/ampel-firmware/mqtt.cpp
+++ b/ampel-firmware/mqtt.cpp
@@ -1,5 +1,18 @@
 #include "mqtt.h"
 
+#include "config.h"
+#include "led_effects.h"
+#include "sensor_console.h"
+#include "wifi_util.h"
+#include "ntp.h"
+#include "src/lib/PubSubClient/src/PubSubClient.h"
+
+#if defined(ESP8266)
+#  include <ESP8266WiFi.h>
+#elif defined(ESP32)
+#  include <WiFi.h>
+#endif
+
 namespace config {
   // Values should be defined in config.h
   uint16_t mqtt_sending_interval = MQTT_SENDING_INTERVAL; // [s]
@@ -12,10 +25,16 @@ namespace config {
   const bool allow_mqtt_commands = ALLOW_MQTT_COMMANDS;
   const unsigned long wait_after_fail = 900; // [s] Wait 15 minutes after an MQTT connection fail, before trying again.
 }
-#if defined(ESP32)
-#  include <WiFiClientSecure.h>
-#endif
+
+#if MQTT_ENCRYPTED
+#  if defined(ESP32)
+#    include <WiFiClientSecure.h>
+#  endif
 WiFiClientSecure espClient;
+#else
+WiFiClient espClient;
+#endif
+
 PubSubClient mqttClient(espClient);
 
 namespace mqtt {
@@ -30,9 +49,11 @@ namespace mqtt {
   void initialize(const char *sensorId) {
     json_sensor_format = PSTR("{\"time\":\"%s\", \"co2\":%d, \"temp\":%.1f, \"rh\":%.1f}");
     snprintf(publish_topic, sizeof(publish_topic), "CO2sensors/%s", sensorId);
+#if MQTT_ENCRYPTED
     // The sensor doesn't check the fingerprint of the MQTT broker, because otherwise this fingerprint should be updated
     // on the sensor every 3 months. The connection can still be encrypted, though:
     espClient.setInsecure(); // If not available for ESP32, please update Arduino IDE / PlatformIO
+#endif
     mqttClient.setServer(config::mqtt_server, config::mqtt_port);
 
     sensor_console::defineIntCommand("mqtt", setMQTTinterval, F("60 (Sets MQTT sending interval, in s)"));
@@ -91,7 +112,13 @@ namespace mqtt {
       // No WIFI
       return;
     }
-    Serial.print(F("MQTT - Attempting connection..."));
+
+    Serial.print(F("MQTT - Attempting connection to "));
+    Serial.print(MQTT_SERVER);
+    Serial.print(MQTT_ENCRYPTED ? F(" (Encrypted") : F(" (Unencrypted"));
+    Serial.print(F(", port "));
+    Serial.print(MQTT_PORT);
+    Serial.print(F(") ..."));
 
     led_effects::onBoardLEDOn();
     // Wait for connection, at most 15s (default)
diff --git a/ampel-firmware/mqtt.h b/ampel-firmware/mqtt.h
index 4d1088345f061646e9c05fb95e378fbe7feec252..0e39b09f7c88300b93de0b98741a63ffb664a36c 100644
--- a/ampel-firmware/mqtt.h
+++ b/ampel-firmware/mqtt.h
@@ -1,12 +1,12 @@
 #ifndef MQTT_H_INCLUDED
 #define MQTT_H_INCLUDED
 
-#include <Arduino.h>
+#include <stdint.h> // For uint32_t & uint16_t
+
 #include "config.h"
-#include "led_effects.h"
-#include "sensor_console.h"
-#include "src/lib/PubSubClient/src/PubSubClient.h"
-#include "wifi_util.h"
+#if !defined(MQTT_ENCRYPTED)
+#  define MQTT_ENCRYPTED true // Old config files might not define it, and encryption was on by default.
+#endif
 
 namespace config {
   extern uint16_t mqtt_sending_interval; // [s]
diff --git a/ampel-firmware/ntp.cpp b/ampel-firmware/ntp.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..468a00bff3915e75f2a09ba63c4c5c3aa04b75fb
--- /dev/null
+++ b/ampel-firmware/ntp.cpp
@@ -0,0 +1,49 @@
+#include "ntp.h"
+#include "sensor_console.h"
+#include "config.h"
+#include <WiFiUdp.h> // required for NTP
+#include "src/lib/NTPClient/NTPClient.h" // NTP
+
+namespace config {
+  const char *ntp_server = NTP_SERVER;
+  const long utc_offset_in_seconds = UTC_OFFSET_IN_SECONDS; // UTC+1
+}
+
+//NOTE: ESP32 sometimes couldn't access the NTP server, and every loop would take +1000ms
+// ifdefs could be used to define functions specific to ESP32, e.g. with configTime
+namespace ntp {
+  WiFiUDP ntpUDP;
+  NTPClient timeClient(ntpUDP, config::ntp_server, config::utc_offset_in_seconds, 60000UL);
+  bool connected_at_least_once = false;
+  void setLocalTime(int32_t unix_seconds);
+
+  void initialize() {
+    timeClient.begin();
+    sensor_console::defineIntCommand("set_time", ntp::setLocalTime, F("1618829570 (Sets time to the given UNIX time)"));
+  }
+
+  void update() {
+    connected_at_least_once |= timeClient.update();
+  }
+
+  void getLocalTime(char *timestamp) {
+    timeClient.getFormattedDate(timestamp);
+  }
+
+  void setLocalTime(int32_t unix_seconds) {
+    char time[23];
+    timeClient.getFormattedDate(time);
+    Serial.print(F("Current time : "));
+    Serial.println(time);
+    if (connected_at_least_once) {
+      Serial.println(F("NTP update already happened. Not changing anything."));
+      return;
+    }
+    Serial.print(F("Setting UNIX time to : "));
+    Serial.println(unix_seconds);
+    timeClient.setEpochTime(unix_seconds - seconds());
+    timeClient.getFormattedDate(time);
+    Serial.print(F("Current time : "));
+    Serial.println(time);
+  }
+}
diff --git a/ampel-firmware/ntp.h b/ampel-firmware/ntp.h
new file mode 100644
index 0000000000000000000000000000000000000000..fe1647c7da1f4ca302c6dba3c6bba33e5595d873
--- /dev/null
+++ b/ampel-firmware/ntp.h
@@ -0,0 +1,13 @@
+#ifndef AMPEL_TIME_H_INCLUDED
+#define AMPEL_TIME_H_INCLUDED
+
+namespace ntp {
+  void initialize();
+  void update();
+  void getLocalTime(char *timestamp);
+}
+
+//NOTE: Only use seconds() for duration comparison, not timestamps comparison. Otherwise, problems happen when millis roll over.
+#define seconds() (millis() / 1000UL)
+
+#endif
diff --git a/ampel-firmware/sensor_console.h b/ampel-firmware/sensor_console.h
index 5cf4450d19535d19e871f5d4d48b11d09521070e..9594317b575bf53db0da92f34e62613423fe6a75 100644
--- a/ampel-firmware/sensor_console.h
+++ b/ampel-firmware/sensor_console.h
@@ -1,9 +1,9 @@
 #ifndef SENSOR_CONSOLE_H_INCLUDED
 #define SENSOR_CONSOLE_H_INCLUDED
-#include <Arduino.h>
+#include <Arduino.h> // For Flash strings, uint8_t and int32_t
 
 /** Other scripts can use this namespace, in order to define commands, via callbacks.
- * Those callbacks can then be used to send commands to the sensor (reset, calibrate, night mode, ...)
+ * Those callbacks can then be used to send commands to the sensor (reset, calibrate, led on/off, ...)
  * The callbacks can either have no parameter, or one int32_t parameter.
  */
 
@@ -12,7 +12,7 @@ namespace sensor_console {
   void defineIntCommand(const char *name, void (*function)(int32_t), const __FlashStringHelper *doc_fstring);
   void defineStringCommand(const char *name, void (*function)(char*), const __FlashStringHelper *doc_fstring);
 
-  void processSerialInput(const byte in_byte);
+  void processSerialInput(const uint8_t in_byte);
 
   void execute(const char *command_line);
 }
diff --git a/ampel-firmware/src/lib/Adafruit_NeoPixel/Adafruit_NeoPixel.cpp b/ampel-firmware/src/lib/Adafruit_NeoPixel/Adafruit_NeoPixel.cpp
index cb49b4ce589277049cf3b86be5cdfd8d4372c4c4..a1216d9c72bc6980ef6099ae60049cfdcbd0d497 100644
--- a/ampel-firmware/src/lib/Adafruit_NeoPixel/Adafruit_NeoPixel.cpp
+++ b/ampel-firmware/src/lib/Adafruit_NeoPixel/Adafruit_NeoPixel.cpp
@@ -46,7 +46,7 @@
 #include "Adafruit_NeoPixel.h"
 
 #if defined(TARGET_LPC1768)
-  #include <time.h>
+#include <time.h>
 #endif
 
 #if defined(NRF52) || defined(NRF52_SERIES)
@@ -57,6 +57,14 @@
 //#define NRF52_DISABLE_INT
 #endif
 
+#if defined(ARDUINO_ARCH_NRF52840)
+#if defined __has_include
+#if __has_include(<pinDefinitions.h>)
+#include <pinDefinitions.h>
+#endif
+#endif
+#endif
+
 /*!
   @brief   NeoPixel constructor when length, pin and pixel type are known
            at compile-time.
@@ -69,11 +77,21 @@
               pixel.
   @return  Adafruit_NeoPixel object. Call the begin() function before use.
 */
-Adafruit_NeoPixel::Adafruit_NeoPixel(uint16_t n, uint16_t p, neoPixelType t) :
-  begun(false), brightness(0), pixels(NULL), endTime(0) {
+Adafruit_NeoPixel::Adafruit_NeoPixel(uint16_t n, int16_t p, neoPixelType t)
+    : begun(false), brightness(0), pixels(NULL), endTime(0) {
   updateType(t);
   updateLength(n);
   setPin(p);
+#if defined(ARDUINO_ARCH_RP2040)
+  // Find a free SM on one of the PIO's
+  sm = pio_claim_unused_sm(pio, false); // don't panic
+  // Try pio1 if SM not found
+  if (sm < 0) {
+    pio = pio1;
+    sm = pio_claim_unused_sm(pio, true); // panic if no SM is free
+  }
+  init = true;
+#endif
 }
 
 /*!
@@ -86,12 +104,13 @@ Adafruit_NeoPixel::Adafruit_NeoPixel(uint16_t n, uint16_t p, neoPixelType t) :
            'new' keyword with the first constructor syntax (length, pin,
            type).
 */
-Adafruit_NeoPixel::Adafruit_NeoPixel() :
+Adafruit_NeoPixel::Adafruit_NeoPixel()
+    :
 #if defined(NEO_KHZ400)
-  is800KHz(true),
+      is800KHz(true),
 #endif
-  begun(false), numLEDs(0), numBytes(0), pin(-1), brightness(0), pixels(NULL),
-  rOffset(1), gOffset(0), bOffset(2), wOffset(1), endTime(0) {
+      begun(false), numLEDs(0), numBytes(0), pin(-1), brightness(0),
+      pixels(NULL), rOffset(1), gOffset(0), bOffset(2), wOffset(1), endTime(0) {
 }
 
 /*!
@@ -99,14 +118,15 @@ Adafruit_NeoPixel::Adafruit_NeoPixel() :
 */
 Adafruit_NeoPixel::~Adafruit_NeoPixel() {
   free(pixels);
-  if(pin >= 0) pinMode(pin, INPUT);
+  if (pin >= 0)
+    pinMode(pin, INPUT);
 }
 
 /*!
   @brief   Configure NeoPixel pin for output.
 */
 void Adafruit_NeoPixel::begin(void) {
-  if(pin >= 0) {
+  if (pin >= 0) {
     pinMode(pin, OUTPUT);
     digitalWrite(pin, LOW);
   }
@@ -128,7 +148,7 @@ void Adafruit_NeoPixel::updateLength(uint16_t n) {
 
   // Allocate new data -- note: ALL PIXELS ARE CLEARED
   numBytes = n * ((wOffset == rOffset) ? 3 : 4);
-  if((pixels = (uint8_t *)malloc(numBytes))) {
+  if ((pixels = (uint8_t *)malloc(numBytes))) {
     memset(pixels, 0, numBytes);
     numLEDs = n;
   } else {
@@ -159,36 +179,71 @@ void Adafruit_NeoPixel::updateType(neoPixelType t) {
   wOffset = (t >> 6) & 0b11; // See notes in header file
   rOffset = (t >> 4) & 0b11; // regarding R/G/B/W offsets
   gOffset = (t >> 2) & 0b11;
-  bOffset =  t       & 0b11;
+  bOffset = t & 0b11;
 #if defined(NEO_KHZ400)
-  is800KHz = (t < 256);      // 400 KHz flag is 1<<8
+  is800KHz = (t < 256); // 400 KHz flag is 1<<8
 #endif
 
   // If bytes-per-pixel has changed (and pixel data was previously
   // allocated), re-allocate to new size. Will clear any data.
-  if(pixels) {
+  if (pixels) {
     bool newThreeBytesPerPixel = (wOffset == rOffset);
-    if(newThreeBytesPerPixel != oldThreeBytesPerPixel) updateLength(numLEDs);
+    if (newThreeBytesPerPixel != oldThreeBytesPerPixel)
+      updateLength(numLEDs);
+  }
+}
+
+// RP2040 specific driver
+#if defined(ARDUINO_ARCH_RP2040)
+void Adafruit_NeoPixel::rp2040Init(uint8_t pin, bool is800KHz)
+{
+  uint offset = pio_add_program(pio, &ws2812_program);
+
+  if (is800KHz)
+  {
+    // 800kHz, 8 bit transfers
+    ws2812_program_init(pio, sm, offset, pin, 800000, 8);
+  }
+  else
+  {
+    // 400kHz, 8 bit transfers
+    ws2812_program_init(pio, sm, offset, pin, 400000, 8);
   }
 }
+// Not a user API
+void  Adafruit_NeoPixel::rp2040Show(uint8_t pin, uint8_t *pixels, uint32_t numBytes, bool is800KHz)
+{
+  if (this->init)
+  {
+    // On first pass through initialise the PIO
+    rp2040Init(pin, is800KHz);
+    this->init = false;
+  }
+
+  while(numBytes--)
+    // Bits for transmission must be shifted to top 8 bits
+    pio_sm_put_blocking(pio, sm, ((uint32_t)*pixels++)<< 24);
+}
+
+#endif
 
 #if defined(ESP8266)
 // ESP8266 show() is external to enforce ICACHE_RAM_ATTR execution
-extern "C" void ICACHE_RAM_ATTR espShow(
-  uint16_t pin, uint8_t *pixels, uint32_t numBytes, uint8_t type);
+extern "C" IRAM_ATTR void espShow(uint16_t pin, uint8_t *pixels,
+                                  uint32_t numBytes, uint8_t type);
 #elif defined(ESP32)
-extern "C" void espShow(
-  uint16_t pin, uint8_t *pixels, uint32_t numBytes, uint8_t type);
+extern "C" void espShow(uint16_t pin, uint8_t *pixels, uint32_t numBytes,
+                        uint8_t type);
 #endif // ESP8266
 
-#if defined(K210) 
+#if defined(K210)
 #define KENDRYTE_K210 1
 #endif
 
 #if defined(KENDRYTE_K210)
-extern "C" void  k210Show(
-    uint8_t pin, uint8_t *pixels, uint32_t numBytes, boolean is800KHz);
-#endif //KENDRYTE_K210
+extern "C" void k210Show(uint8_t pin, uint8_t *pixels, uint32_t numBytes,
+                         boolean is800KHz);
+#endif // KENDRYTE_K210
 /*!
   @brief   Transmit pixel data in RAM to NeoPixels.
   @note    On most architectures, interrupts are temporarily disabled in
@@ -202,7 +257,8 @@ extern "C" void  k210Show(
 */
 void Adafruit_NeoPixel::show(void) {
 
-  if(!pixels) return;
+  if (!pixels)
+    return;
 
   // Data latch = 300+ microsecond pause in the output stream. Rather than
   // put a delay at the end of the function, the ending time is noted and
@@ -210,36 +266,35 @@ void Adafruit_NeoPixel::show(void) {
   // subsequent round of data until the latch time has elapsed. This
   // allows the mainline code to start generating the next frame of data
   // rather than stalling for the latch.
-  while(!canShow());
-  // endTime is a private member (rather than global var) so that multiple
-  // instances on different pins can be quickly issued in succession (each
-  // instance doesn't delay the next).
-
-  // In order to make this code runtime-configurable to work with any pin,
-  // SBI/CBI instructions are eschewed in favor of full PORT writes via the
-  // OUT or ST instructions. It relies on two facts: that peripheral
-  // functions (such as PWM) take precedence on output pins, so our PORT-
-  // wide writes won't interfere, and that interrupts are globally disabled
-  // while data is being issued to the LEDs, so no other code will be
-  // accessing the PORT. The code takes an initial 'snapshot' of the PORT
-  // state, computes 'pin high' and 'pin low' values, and writes these back
-  // to the PORT register as needed.
-
-  // NRF52 may use PWM + DMA (if available), may not need to disable interrupt
-#if !( defined(NRF52) || defined(NRF52_SERIES) )
+  while (!canShow())
+    ;
+    // endTime is a private member (rather than global var) so that multiple
+    // instances on different pins can be quickly issued in succession (each
+    // instance doesn't delay the next).
+
+    // In order to make this code runtime-configurable to work with any pin,
+    // SBI/CBI instructions are eschewed in favor of full PORT writes via the
+    // OUT or ST instructions. It relies on two facts: that peripheral
+    // functions (such as PWM) take precedence on output pins, so our PORT-
+    // wide writes won't interfere, and that interrupts are globally disabled
+    // while data is being issued to the LEDs, so no other code will be
+    // accessing the PORT. The code takes an initial 'snapshot' of the PORT
+    // state, computes 'pin high' and 'pin low' values, and writes these back
+    // to the PORT register as needed.
+
+    // NRF52 may use PWM + DMA (if available), may not need to disable interrupt
+#if !(defined(NRF52) || defined(NRF52_SERIES))
   noInterrupts(); // Need 100% focus on instruction timing
 #endif
 
 #if defined(__AVR__)
-// AVR MCUs -- ATmega & ATtiny (no XMEGA) ---------------------------------
+  // AVR MCUs -- ATmega & ATtiny (no XMEGA) ---------------------------------
 
-  volatile uint16_t
-    i   = numBytes; // Loop counter
-  volatile uint8_t
-   *ptr = pixels,   // Pointer to next byte
-    b   = *ptr++,   // Current byte value
-    hi,             // PORT w/output bit set high
-    lo;             // PORT w/output bit set low
+  volatile uint16_t i = numBytes; // Loop counter
+  volatile uint8_t *ptr = pixels, // Pointer to next byte
+      b = *ptr++,                 // Current byte value
+      hi,                         // PORT w/output bit set high
+      lo;                         // PORT w/output bit set low
 
   // Hand-tuned assembly code issues data to the LED drivers at a specific
   // rate. There's separate code for different CPU speeds (8, 12, 16 MHz)
@@ -259,10 +314,10 @@ void Adafruit_NeoPixel::show(void) {
 #if (F_CPU >= 7400000UL) && (F_CPU <= 9500000UL)
 
 #if defined(NEO_KHZ400) // 800 KHz check needed only if 400 KHz support enabled
-  if(is800KHz) {
+  if (is800KHz) {
 #endif
 
-    volatile uint8_t n1, n2 = 0;  // First, next bits out
+    volatile uint8_t n1, n2 = 0; // First, next bits out
 
     // Squeezing an 800 KHz stream out of an 8 MHz chip requires code
     // specific to each PORT register.
@@ -273,14 +328,15 @@ void Adafruit_NeoPixel::show(void) {
     // PORTD OUTPUT ----------------------------------------------------
 
 #if defined(PORTD)
- #if defined(PORTB) || defined(PORTC) || defined(PORTF)
-    if(port == &PORTD) {
- #endif // defined(PORTB/C/F)
+#if defined(PORTB) || defined(PORTC) || defined(PORTF)
+    if (port == &PORTD) {
+#endif // defined(PORTB/C/F)
 
-      hi = PORTD |  pinMask;
+      hi = PORTD | pinMask;
       lo = PORTD & ~pinMask;
       n1 = lo;
-      if(b & 0x80) n1 = hi;
+      if (b & 0x80)
+        n1 = hi;
 
       // Dirty trick: RJMPs proceeding to the next instruction are used
       // to delay two clock cycles in one instruction word (rather than
@@ -289,360 +345,618 @@ void Adafruit_NeoPixel::show(void) {
       // relative branch.
 
       asm volatile(
-       "headD:"                   "\n\t" // Clk  Pseudocode
-        // Bit 7:
-        "out  %[port] , %[hi]"    "\n\t" // 1    PORT = hi
-        "mov  %[n2]   , %[lo]"    "\n\t" // 1    n2   = lo
-        "out  %[port] , %[n1]"    "\n\t" // 1    PORT = n1
-        "rjmp .+0"                "\n\t" // 2    nop nop
-        "sbrc %[byte] , 6"        "\n\t" // 1-2  if(b & 0x40)
-         "mov %[n2]   , %[hi]"    "\n\t" // 0-1   n2 = hi
-        "out  %[port] , %[lo]"    "\n\t" // 1    PORT = lo
-        "rjmp .+0"                "\n\t" // 2    nop nop
-        // Bit 6:
-        "out  %[port] , %[hi]"    "\n\t" // 1    PORT = hi
-        "mov  %[n1]   , %[lo]"    "\n\t" // 1    n1   = lo
-        "out  %[port] , %[n2]"    "\n\t" // 1    PORT = n2
-        "rjmp .+0"                "\n\t" // 2    nop nop
-        "sbrc %[byte] , 5"        "\n\t" // 1-2  if(b & 0x20)
-         "mov %[n1]   , %[hi]"    "\n\t" // 0-1   n1 = hi
-        "out  %[port] , %[lo]"    "\n\t" // 1    PORT = lo
-        "rjmp .+0"                "\n\t" // 2    nop nop
-        // Bit 5:
-        "out  %[port] , %[hi]"    "\n\t" // 1    PORT = hi
-        "mov  %[n2]   , %[lo]"    "\n\t" // 1    n2   = lo
-        "out  %[port] , %[n1]"    "\n\t" // 1    PORT = n1
-        "rjmp .+0"                "\n\t" // 2    nop nop
-        "sbrc %[byte] , 4"        "\n\t" // 1-2  if(b & 0x10)
-         "mov %[n2]   , %[hi]"    "\n\t" // 0-1   n2 = hi
-        "out  %[port] , %[lo]"    "\n\t" // 1    PORT = lo
-        "rjmp .+0"                "\n\t" // 2    nop nop
-        // Bit 4:
-        "out  %[port] , %[hi]"    "\n\t" // 1    PORT = hi
-        "mov  %[n1]   , %[lo]"    "\n\t" // 1    n1   = lo
-        "out  %[port] , %[n2]"    "\n\t" // 1    PORT = n2
-        "rjmp .+0"                "\n\t" // 2    nop nop
-        "sbrc %[byte] , 3"        "\n\t" // 1-2  if(b & 0x08)
-         "mov %[n1]   , %[hi]"    "\n\t" // 0-1   n1 = hi
-        "out  %[port] , %[lo]"    "\n\t" // 1    PORT = lo
-        "rjmp .+0"                "\n\t" // 2    nop nop
-        // Bit 3:
-        "out  %[port] , %[hi]"    "\n\t" // 1    PORT = hi
-        "mov  %[n2]   , %[lo]"    "\n\t" // 1    n2   = lo
-        "out  %[port] , %[n1]"    "\n\t" // 1    PORT = n1
-        "rjmp .+0"                "\n\t" // 2    nop nop
-        "sbrc %[byte] , 2"        "\n\t" // 1-2  if(b & 0x04)
-         "mov %[n2]   , %[hi]"    "\n\t" // 0-1   n2 = hi
-        "out  %[port] , %[lo]"    "\n\t" // 1    PORT = lo
-        "rjmp .+0"                "\n\t" // 2    nop nop
-        // Bit 2:
-        "out  %[port] , %[hi]"    "\n\t" // 1    PORT = hi
-        "mov  %[n1]   , %[lo]"    "\n\t" // 1    n1   = lo
-        "out  %[port] , %[n2]"    "\n\t" // 1    PORT = n2
-        "rjmp .+0"                "\n\t" // 2    nop nop
-        "sbrc %[byte] , 1"        "\n\t" // 1-2  if(b & 0x02)
-         "mov %[n1]   , %[hi]"    "\n\t" // 0-1   n1 = hi
-        "out  %[port] , %[lo]"    "\n\t" // 1    PORT = lo
-        "rjmp .+0"                "\n\t" // 2    nop nop
-        // Bit 1:
-        "out  %[port] , %[hi]"    "\n\t" // 1    PORT = hi
-        "mov  %[n2]   , %[lo]"    "\n\t" // 1    n2   = lo
-        "out  %[port] , %[n1]"    "\n\t" // 1    PORT = n1
-        "rjmp .+0"                "\n\t" // 2    nop nop
-        "sbrc %[byte] , 0"        "\n\t" // 1-2  if(b & 0x01)
-         "mov %[n2]   , %[hi]"    "\n\t" // 0-1   n2 = hi
-        "out  %[port] , %[lo]"    "\n\t" // 1    PORT = lo
-        "sbiw %[count], 1"        "\n\t" // 2    i-- (don't act on Z flag yet)
-        // Bit 0:
-        "out  %[port] , %[hi]"    "\n\t" // 1    PORT = hi
-        "mov  %[n1]   , %[lo]"    "\n\t" // 1    n1   = lo
-        "out  %[port] , %[n2]"    "\n\t" // 1    PORT = n2
-        "ld   %[byte] , %a[ptr]+" "\n\t" // 2    b = *ptr++
-        "sbrc %[byte] , 7"        "\n\t" // 1-2  if(b & 0x80)
-         "mov %[n1]   , %[hi]"    "\n\t" // 0-1   n1 = hi
-        "out  %[port] , %[lo]"    "\n\t" // 1    PORT = lo
-        "brne headD"              "\n"   // 2    while(i) (Z flag set above)
-      : [byte]  "+r" (b),
-        [n1]    "+r" (n1),
-        [n2]    "+r" (n2),
-        [count] "+w" (i)
-      : [port]   "I" (_SFR_IO_ADDR(PORTD)),
-        [ptr]    "e" (ptr),
-        [hi]     "r" (hi),
-        [lo]     "r" (lo));
-
- #if defined(PORTB) || defined(PORTC) || defined(PORTF)
+          "headD:"
+          "\n\t" // Clk  Pseudocode
+                 // Bit 7:
+          "out  %[port] , %[hi]"
+          "\n\t" // 1    PORT = hi
+          "mov  %[n2]   , %[lo]"
+          "\n\t" // 1    n2   = lo
+          "out  %[port] , %[n1]"
+          "\n\t" // 1    PORT = n1
+          "rjmp .+0"
+          "\n\t" // 2    nop nop
+          "sbrc %[byte] , 6"
+          "\n\t" // 1-2  if(b & 0x40)
+          "mov %[n2]   , %[hi]"
+          "\n\t" // 0-1   n2 = hi
+          "out  %[port] , %[lo]"
+          "\n\t" // 1    PORT = lo
+          "rjmp .+0"
+          "\n\t" // 2    nop nop
+          // Bit 6:
+          "out  %[port] , %[hi]"
+          "\n\t" // 1    PORT = hi
+          "mov  %[n1]   , %[lo]"
+          "\n\t" // 1    n1   = lo
+          "out  %[port] , %[n2]"
+          "\n\t" // 1    PORT = n2
+          "rjmp .+0"
+          "\n\t" // 2    nop nop
+          "sbrc %[byte] , 5"
+          "\n\t" // 1-2  if(b & 0x20)
+          "mov %[n1]   , %[hi]"
+          "\n\t" // 0-1   n1 = hi
+          "out  %[port] , %[lo]"
+          "\n\t" // 1    PORT = lo
+          "rjmp .+0"
+          "\n\t" // 2    nop nop
+          // Bit 5:
+          "out  %[port] , %[hi]"
+          "\n\t" // 1    PORT = hi
+          "mov  %[n2]   , %[lo]"
+          "\n\t" // 1    n2   = lo
+          "out  %[port] , %[n1]"
+          "\n\t" // 1    PORT = n1
+          "rjmp .+0"
+          "\n\t" // 2    nop nop
+          "sbrc %[byte] , 4"
+          "\n\t" // 1-2  if(b & 0x10)
+          "mov %[n2]   , %[hi]"
+          "\n\t" // 0-1   n2 = hi
+          "out  %[port] , %[lo]"
+          "\n\t" // 1    PORT = lo
+          "rjmp .+0"
+          "\n\t" // 2    nop nop
+          // Bit 4:
+          "out  %[port] , %[hi]"
+          "\n\t" // 1    PORT = hi
+          "mov  %[n1]   , %[lo]"
+          "\n\t" // 1    n1   = lo
+          "out  %[port] , %[n2]"
+          "\n\t" // 1    PORT = n2
+          "rjmp .+0"
+          "\n\t" // 2    nop nop
+          "sbrc %[byte] , 3"
+          "\n\t" // 1-2  if(b & 0x08)
+          "mov %[n1]   , %[hi]"
+          "\n\t" // 0-1   n1 = hi
+          "out  %[port] , %[lo]"
+          "\n\t" // 1    PORT = lo
+          "rjmp .+0"
+          "\n\t" // 2    nop nop
+          // Bit 3:
+          "out  %[port] , %[hi]"
+          "\n\t" // 1    PORT = hi
+          "mov  %[n2]   , %[lo]"
+          "\n\t" // 1    n2   = lo
+          "out  %[port] , %[n1]"
+          "\n\t" // 1    PORT = n1
+          "rjmp .+0"
+          "\n\t" // 2    nop nop
+          "sbrc %[byte] , 2"
+          "\n\t" // 1-2  if(b & 0x04)
+          "mov %[n2]   , %[hi]"
+          "\n\t" // 0-1   n2 = hi
+          "out  %[port] , %[lo]"
+          "\n\t" // 1    PORT = lo
+          "rjmp .+0"
+          "\n\t" // 2    nop nop
+          // Bit 2:
+          "out  %[port] , %[hi]"
+          "\n\t" // 1    PORT = hi
+          "mov  %[n1]   , %[lo]"
+          "\n\t" // 1    n1   = lo
+          "out  %[port] , %[n2]"
+          "\n\t" // 1    PORT = n2
+          "rjmp .+0"
+          "\n\t" // 2    nop nop
+          "sbrc %[byte] , 1"
+          "\n\t" // 1-2  if(b & 0x02)
+          "mov %[n1]   , %[hi]"
+          "\n\t" // 0-1   n1 = hi
+          "out  %[port] , %[lo]"
+          "\n\t" // 1    PORT = lo
+          "rjmp .+0"
+          "\n\t" // 2    nop nop
+          // Bit 1:
+          "out  %[port] , %[hi]"
+          "\n\t" // 1    PORT = hi
+          "mov  %[n2]   , %[lo]"
+          "\n\t" // 1    n2   = lo
+          "out  %[port] , %[n1]"
+          "\n\t" // 1    PORT = n1
+          "rjmp .+0"
+          "\n\t" // 2    nop nop
+          "sbrc %[byte] , 0"
+          "\n\t" // 1-2  if(b & 0x01)
+          "mov %[n2]   , %[hi]"
+          "\n\t" // 0-1   n2 = hi
+          "out  %[port] , %[lo]"
+          "\n\t" // 1    PORT = lo
+          "sbiw %[count], 1"
+          "\n\t" // 2    i-- (don't act on Z flag yet)
+          // Bit 0:
+          "out  %[port] , %[hi]"
+          "\n\t" // 1    PORT = hi
+          "mov  %[n1]   , %[lo]"
+          "\n\t" // 1    n1   = lo
+          "out  %[port] , %[n2]"
+          "\n\t" // 1    PORT = n2
+          "ld   %[byte] , %a[ptr]+"
+          "\n\t" // 2    b = *ptr++
+          "sbrc %[byte] , 7"
+          "\n\t" // 1-2  if(b & 0x80)
+          "mov %[n1]   , %[hi]"
+          "\n\t" // 0-1   n1 = hi
+          "out  %[port] , %[lo]"
+          "\n\t" // 1    PORT = lo
+          "brne headD"
+          "\n" // 2    while(i) (Z flag set above)
+          : [byte] "+r"(b), [n1] "+r"(n1), [n2] "+r"(n2), [count] "+w"(i)
+          : [port] "I"(_SFR_IO_ADDR(PORTD)), [ptr] "e"(ptr), [hi] "r"(hi),
+            [lo] "r"(lo));
+
+#if defined(PORTB) || defined(PORTC) || defined(PORTF)
     } else // other PORT(s)
- #endif // defined(PORTB/C/F)
+#endif // defined(PORTB/C/F)
 #endif // defined(PORTD)
 
     // PORTB OUTPUT ----------------------------------------------------
 
 #if defined(PORTB)
- #if defined(PORTD) || defined(PORTC) || defined(PORTF)
-    if(port == &PORTB) {
- #endif // defined(PORTD/C/F)
+#if defined(PORTD) || defined(PORTC) || defined(PORTF)
+        if (port == &PORTB) {
+#endif // defined(PORTD/C/F)
 
       // Same as above, just switched to PORTB and stripped of comments.
-      hi = PORTB |  pinMask;
+      hi = PORTB | pinMask;
       lo = PORTB & ~pinMask;
       n1 = lo;
-      if(b & 0x80) n1 = hi;
+      if (b & 0x80)
+        n1 = hi;
 
       asm volatile(
-       "headB:"                   "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n2]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n1]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 6"        "\n\t"
-         "mov %[n2]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n1]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n2]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 5"        "\n\t"
-         "mov %[n1]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n2]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n1]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 4"        "\n\t"
-         "mov %[n2]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n1]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n2]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 3"        "\n\t"
-         "mov %[n1]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n2]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n1]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 2"        "\n\t"
-         "mov %[n2]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n1]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n2]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 1"        "\n\t"
-         "mov %[n1]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n2]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n1]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 0"        "\n\t"
-         "mov %[n2]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "sbiw %[count], 1"        "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n1]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n2]"    "\n\t"
-        "ld   %[byte] , %a[ptr]+" "\n\t"
-        "sbrc %[byte] , 7"        "\n\t"
-         "mov %[n1]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "brne headB"              "\n"
-      : [byte] "+r" (b), [n1] "+r" (n1), [n2] "+r" (n2), [count] "+w" (i)
-      : [port] "I" (_SFR_IO_ADDR(PORTB)), [ptr] "e" (ptr), [hi] "r" (hi),
-        [lo] "r" (lo));
-
- #if defined(PORTD) || defined(PORTC) || defined(PORTF)
+          "headB:"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n2]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n1]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 6"
+          "\n\t"
+          "mov %[n2]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n1]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n2]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 5"
+          "\n\t"
+          "mov %[n1]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n2]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n1]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 4"
+          "\n\t"
+          "mov %[n2]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n1]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n2]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 3"
+          "\n\t"
+          "mov %[n1]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n2]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n1]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 2"
+          "\n\t"
+          "mov %[n2]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n1]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n2]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 1"
+          "\n\t"
+          "mov %[n1]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n2]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n1]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 0"
+          "\n\t"
+          "mov %[n2]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "sbiw %[count], 1"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n1]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n2]"
+          "\n\t"
+          "ld   %[byte] , %a[ptr]+"
+          "\n\t"
+          "sbrc %[byte] , 7"
+          "\n\t"
+          "mov %[n1]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "brne headB"
+          "\n"
+          : [byte] "+r"(b), [n1] "+r"(n1), [n2] "+r"(n2), [count] "+w"(i)
+          : [port] "I"(_SFR_IO_ADDR(PORTB)), [ptr] "e"(ptr), [hi] "r"(hi),
+            [lo] "r"(lo));
+
+#if defined(PORTD) || defined(PORTC) || defined(PORTF)
     }
- #endif
- #if defined(PORTC) || defined(PORTF)
+#endif
+#if defined(PORTC) || defined(PORTF)
     else
- #endif // defined(PORTC/F)
+#endif // defined(PORTC/F)
 #endif // defined(PORTB)
 
     // PORTC OUTPUT ----------------------------------------------------
 
 #if defined(PORTC)
- #if defined(PORTD) || defined(PORTB) || defined(PORTF)
-    if(port == &PORTC) {
- #endif // defined(PORTD/B/F)
+#if defined(PORTD) || defined(PORTB) || defined(PORTF)
+        if (port == &PORTC) {
+#endif // defined(PORTD/B/F)
 
       // Same as above, just switched to PORTC and stripped of comments.
-      hi = PORTC |  pinMask;
+      hi = PORTC | pinMask;
       lo = PORTC & ~pinMask;
       n1 = lo;
-      if(b & 0x80) n1 = hi;
+      if (b & 0x80)
+        n1 = hi;
 
       asm volatile(
-       "headC:"                   "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n2]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n1]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 6"        "\n\t"
-         "mov %[n2]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n1]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n2]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 5"        "\n\t"
-         "mov %[n1]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n2]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n1]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 4"        "\n\t"
-         "mov %[n2]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n1]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n2]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 3"        "\n\t"
-         "mov %[n1]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n2]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n1]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 2"        "\n\t"
-         "mov %[n2]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n1]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n2]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 1"        "\n\t"
-         "mov %[n1]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n2]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n1]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 0"        "\n\t"
-         "mov %[n2]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "sbiw %[count], 1"        "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n1]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n2]"    "\n\t"
-        "ld   %[byte] , %a[ptr]+" "\n\t"
-        "sbrc %[byte] , 7"        "\n\t"
-         "mov %[n1]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "brne headC"              "\n"
-      : [byte] "+r" (b), [n1] "+r" (n1), [n2] "+r" (n2), [count] "+w" (i)
-      : [port] "I" (_SFR_IO_ADDR(PORTC)), [ptr] "e" (ptr), [hi] "r" (hi),
-        [lo] "r" (lo));
-
- #if defined(PORTD) || defined(PORTB) || defined(PORTF)
+          "headC:"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n2]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n1]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 6"
+          "\n\t"
+          "mov %[n2]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n1]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n2]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 5"
+          "\n\t"
+          "mov %[n1]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n2]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n1]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 4"
+          "\n\t"
+          "mov %[n2]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n1]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n2]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 3"
+          "\n\t"
+          "mov %[n1]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n2]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n1]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 2"
+          "\n\t"
+          "mov %[n2]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n1]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n2]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 1"
+          "\n\t"
+          "mov %[n1]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n2]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n1]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 0"
+          "\n\t"
+          "mov %[n2]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "sbiw %[count], 1"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n1]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n2]"
+          "\n\t"
+          "ld   %[byte] , %a[ptr]+"
+          "\n\t"
+          "sbrc %[byte] , 7"
+          "\n\t"
+          "mov %[n1]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "brne headC"
+          "\n"
+          : [byte] "+r"(b), [n1] "+r"(n1), [n2] "+r"(n2), [count] "+w"(i)
+          : [port] "I"(_SFR_IO_ADDR(PORTC)), [ptr] "e"(ptr), [hi] "r"(hi),
+            [lo] "r"(lo));
+
+#if defined(PORTD) || defined(PORTB) || defined(PORTF)
     }
- #endif // defined(PORTD/B/F)
- #if defined(PORTF)
+#endif // defined(PORTD/B/F)
+#if defined(PORTF)
     else
- #endif
+#endif
 #endif // defined(PORTC)
 
     // PORTF OUTPUT ----------------------------------------------------
 
 #if defined(PORTF)
- #if defined(PORTD) || defined(PORTB) || defined(PORTC)
-    if(port == &PORTF) {
- #endif // defined(PORTD/B/C)
+#if defined(PORTD) || defined(PORTB) || defined(PORTC)
+        if (port == &PORTF) {
+#endif // defined(PORTD/B/C)
 
-      hi = PORTF |  pinMask;
+      hi = PORTF | pinMask;
       lo = PORTF & ~pinMask;
       n1 = lo;
-      if(b & 0x80) n1 = hi;
+      if (b & 0x80)
+        n1 = hi;
 
       asm volatile(
-       "headF:"                   "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n2]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n1]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 6"        "\n\t"
-         "mov %[n2]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n1]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n2]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 5"        "\n\t"
-         "mov %[n1]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n2]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n1]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 4"        "\n\t"
-         "mov %[n2]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n1]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n2]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 3"        "\n\t"
-         "mov %[n1]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n2]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n1]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 2"        "\n\t"
-         "mov %[n2]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n1]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n2]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 1"        "\n\t"
-         "mov %[n1]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n2]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n1]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "sbrc %[byte] , 0"        "\n\t"
-         "mov %[n2]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "sbiw %[count], 1"        "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "mov  %[n1]   , %[lo]"    "\n\t"
-        "out  %[port] , %[n2]"    "\n\t"
-        "ld   %[byte] , %a[ptr]+" "\n\t"
-        "sbrc %[byte] , 7"        "\n\t"
-         "mov %[n1]   , %[hi]"    "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "brne headF"              "\n"
-      : [byte] "+r" (b), [n1] "+r" (n1), [n2] "+r" (n2), [count] "+w" (i)
-      : [port] "I" (_SFR_IO_ADDR(PORTF)), [ptr] "e" (ptr), [hi] "r" (hi),
-        [lo] "r" (lo));
-
- #if defined(PORTD) || defined(PORTB) || defined(PORTC)
+          "headF:"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n2]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n1]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 6"
+          "\n\t"
+          "mov %[n2]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n1]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n2]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 5"
+          "\n\t"
+          "mov %[n1]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n2]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n1]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 4"
+          "\n\t"
+          "mov %[n2]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n1]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n2]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 3"
+          "\n\t"
+          "mov %[n1]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n2]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n1]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 2"
+          "\n\t"
+          "mov %[n2]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n1]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n2]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 1"
+          "\n\t"
+          "mov %[n1]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n2]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n1]"
+          "\n\t"
+          "rjmp .+0"
+          "\n\t"
+          "sbrc %[byte] , 0"
+          "\n\t"
+          "mov %[n2]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "sbiw %[count], 1"
+          "\n\t"
+          "out  %[port] , %[hi]"
+          "\n\t"
+          "mov  %[n1]   , %[lo]"
+          "\n\t"
+          "out  %[port] , %[n2]"
+          "\n\t"
+          "ld   %[byte] , %a[ptr]+"
+          "\n\t"
+          "sbrc %[byte] , 7"
+          "\n\t"
+          "mov %[n1]   , %[hi]"
+          "\n\t"
+          "out  %[port] , %[lo]"
+          "\n\t"
+          "brne headF"
+          "\n"
+          : [byte] "+r"(b), [n1] "+r"(n1), [n2] "+r"(n2), [count] "+w"(i)
+          : [port] "I"(_SFR_IO_ADDR(PORTF)), [ptr] "e"(ptr), [hi] "r"(hi),
+            [lo] "r"(lo));
+
+#if defined(PORTD) || defined(PORTB) || defined(PORTC)
     }
- #endif // defined(PORTD/B/C)
+#endif // defined(PORTD/B/C)
 #endif // defined(PORTF)
 
 #if defined(NEO_KHZ400)
@@ -660,41 +974,56 @@ void Adafruit_NeoPixel::show(void) {
 
     volatile uint8_t next, bit;
 
-    hi   = *port |  pinMask;
-    lo   = *port & ~pinMask;
+    hi = *port | pinMask;
+    lo = *port & ~pinMask;
     next = lo;
-    bit  = 8;
-
-    asm volatile(
-     "head20:"                  "\n\t" // Clk  Pseudocode    (T =  0)
-      "st   %a[port], %[hi]"    "\n\t" // 2    PORT = hi     (T =  2)
-      "sbrc %[byte] , 7"        "\n\t" // 1-2  if(b & 128)
-       "mov  %[next], %[hi]"    "\n\t" // 0-1   next = hi    (T =  4)
-      "st   %a[port], %[next]"  "\n\t" // 2    PORT = next   (T =  6)
-      "mov  %[next] , %[lo]"    "\n\t" // 1    next = lo     (T =  7)
-      "dec  %[bit]"             "\n\t" // 1    bit--         (T =  8)
-      "breq nextbyte20"         "\n\t" // 1-2  if(bit == 0)
-      "rol  %[byte]"            "\n\t" // 1    b <<= 1       (T = 10)
-      "st   %a[port], %[lo]"    "\n\t" // 2    PORT = lo     (T = 12)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 14)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 16)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 18)
-      "rjmp head20"             "\n\t" // 2    -> head20 (next bit out)
-     "nextbyte20:"              "\n\t" //                    (T = 10)
-      "st   %a[port], %[lo]"    "\n\t" // 2    PORT = lo     (T = 12)
-      "nop"                     "\n\t" // 1    nop           (T = 13)
-      "ldi  %[bit]  , 8"        "\n\t" // 1    bit = 8       (T = 14)
-      "ld   %[byte] , %a[ptr]+" "\n\t" // 2    b = *ptr++    (T = 16)
-      "sbiw %[count], 1"        "\n\t" // 2    i--           (T = 18)
-      "brne head20"             "\n"   // 2    if(i != 0) -> (next byte)
-      : [port]  "+e" (port),
-        [byte]  "+r" (b),
-        [bit]   "+r" (bit),
-        [next]  "+r" (next),
-        [count] "+w" (i)
-      : [hi]    "r" (hi),
-        [lo]    "r" (lo),
-        [ptr]   "e" (ptr));
+    bit = 8;
+
+    asm volatile("head20:"
+                 "\n\t" // Clk  Pseudocode    (T =  0)
+                 "st   %a[port], %[hi]"
+                 "\n\t" // 2    PORT = hi     (T =  2)
+                 "sbrc %[byte] , 7"
+                 "\n\t" // 1-2  if(b & 128)
+                 "mov  %[next], %[hi]"
+                 "\n\t" // 0-1   next = hi    (T =  4)
+                 "st   %a[port], %[next]"
+                 "\n\t" // 2    PORT = next   (T =  6)
+                 "mov  %[next] , %[lo]"
+                 "\n\t" // 1    next = lo     (T =  7)
+                 "dec  %[bit]"
+                 "\n\t" // 1    bit--         (T =  8)
+                 "breq nextbyte20"
+                 "\n\t" // 1-2  if(bit == 0)
+                 "rol  %[byte]"
+                 "\n\t" // 1    b <<= 1       (T = 10)
+                 "st   %a[port], %[lo]"
+                 "\n\t" // 2    PORT = lo     (T = 12)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 14)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 16)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 18)
+                 "rjmp head20"
+                 "\n\t" // 2    -> head20 (next bit out)
+                 "nextbyte20:"
+                 "\n\t" //                    (T = 10)
+                 "st   %a[port], %[lo]"
+                 "\n\t" // 2    PORT = lo     (T = 12)
+                 "nop"
+                 "\n\t" // 1    nop           (T = 13)
+                 "ldi  %[bit]  , 8"
+                 "\n\t" // 1    bit = 8       (T = 14)
+                 "ld   %[byte] , %a[ptr]+"
+                 "\n\t" // 2    b = *ptr++    (T = 16)
+                 "sbiw %[count], 1"
+                 "\n\t" // 2    i--           (T = 18)
+                 "brne head20"
+                 "\n" // 2    if(i != 0) -> (next byte)
+                 : [port] "+e"(port), [byte] "+r"(b), [bit] "+r"(bit),
+                   [next] "+r"(next), [count] "+w"(i)
+                 : [hi] "r"(hi), [lo] "r"(lo), [ptr] "e"(ptr));
   }
 #endif // NEO_KHZ400
 
@@ -702,7 +1031,7 @@ void Adafruit_NeoPixel::show(void) {
 #elif (F_CPU >= 11100000UL) && (F_CPU <= 14300000UL)
 
 #if defined(NEO_KHZ400) // 800 KHz check needed only if 400 KHz support enabled
-  if(is800KHz) {
+  if (is800KHz) {
 #endif
 
     // In the 12 MHz case, an optimized 800 KHz datastream (no dead time
@@ -717,253 +1046,397 @@ void Adafruit_NeoPixel::show(void) {
     // PORTD OUTPUT ----------------------------------------------------
 
 #if defined(PORTD)
- #if defined(PORTB) || defined(PORTC) || defined(PORTF)
-    if(port == &PORTD) {
- #endif // defined(PORTB/C/F)
+#if defined(PORTB) || defined(PORTC) || defined(PORTF)
+    if (port == &PORTD) {
+#endif // defined(PORTB/C/F)
 
-      hi   = PORTD |  pinMask;
-      lo   = PORTD & ~pinMask;
+      hi = PORTD | pinMask;
+      lo = PORTD & ~pinMask;
       next = lo;
-      if(b & 0x80) next = hi;
+      if (b & 0x80)
+        next = hi;
 
       // Don't "optimize" the OUT calls into the bitTime subroutine;
       // we're exploiting the RCALL and RET as 3- and 4-cycle NOPs!
-      asm volatile(
-       "headD:"                   "\n\t" //        (T =  0)
-        "out   %[port], %[hi]"    "\n\t" //        (T =  1)
-        "rcall bitTimeD"          "\n\t" // Bit 7  (T = 15)
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeD"          "\n\t" // Bit 6
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeD"          "\n\t" // Bit 5
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeD"          "\n\t" // Bit 4
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeD"          "\n\t" // Bit 3
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeD"          "\n\t" // Bit 2
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeD"          "\n\t" // Bit 1
-        // Bit 0:
-        "out  %[port] , %[hi]"    "\n\t" // 1    PORT = hi    (T =  1)
-        "rjmp .+0"                "\n\t" // 2    nop nop      (T =  3)
-        "ld   %[byte] , %a[ptr]+" "\n\t" // 2    b = *ptr++   (T =  5)
-        "out  %[port] , %[next]"  "\n\t" // 1    PORT = next  (T =  6)
-        "mov  %[next] , %[lo]"    "\n\t" // 1    next = lo    (T =  7)
-        "sbrc %[byte] , 7"        "\n\t" // 1-2  if(b & 0x80) (T =  8)
-         "mov %[next] , %[hi]"    "\n\t" // 0-1    next = hi  (T =  9)
-        "nop"                     "\n\t" // 1                 (T = 10)
-        "out  %[port] , %[lo]"    "\n\t" // 1    PORT = lo    (T = 11)
-        "sbiw %[count], 1"        "\n\t" // 2    i--          (T = 13)
-        "brne headD"              "\n\t" // 2    if(i != 0) -> (next byte)
-         "rjmp doneD"             "\n\t"
-        "bitTimeD:"               "\n\t" //      nop nop nop     (T =  4)
-         "out  %[port], %[next]"  "\n\t" // 1    PORT = next     (T =  5)
-         "mov  %[next], %[lo]"    "\n\t" // 1    next = lo       (T =  6)
-         "rol  %[byte]"           "\n\t" // 1    b <<= 1         (T =  7)
-         "sbrc %[byte], 7"        "\n\t" // 1-2  if(b & 0x80)    (T =  8)
-          "mov %[next], %[hi]"    "\n\t" // 0-1   next = hi      (T =  9)
-         "nop"                    "\n\t" // 1                    (T = 10)
-         "out  %[port], %[lo]"    "\n\t" // 1    PORT = lo       (T = 11)
-         "ret"                    "\n\t" // 4    nop nop nop nop (T = 15)
-         "doneD:"                 "\n"
-        : [byte]  "+r" (b),
-          [next]  "+r" (next),
-          [count] "+w" (i)
-        : [port]   "I" (_SFR_IO_ADDR(PORTD)),
-          [ptr]    "e" (ptr),
-          [hi]     "r" (hi),
-          [lo]     "r" (lo));
-
- #if defined(PORTB) || defined(PORTC) || defined(PORTF)
+      asm volatile("headD:"
+                   "\n\t" //        (T =  0)
+                   "out   %[port], %[hi]"
+                   "\n\t" //        (T =  1)
+                   "rcall bitTimeD"
+                   "\n\t" // Bit 7  (T = 15)
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeD"
+                   "\n\t" // Bit 6
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeD"
+                   "\n\t" // Bit 5
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeD"
+                   "\n\t" // Bit 4
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeD"
+                   "\n\t" // Bit 3
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeD"
+                   "\n\t" // Bit 2
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeD"
+                   "\n\t" // Bit 1
+                   // Bit 0:
+                   "out  %[port] , %[hi]"
+                   "\n\t" // 1    PORT = hi    (T =  1)
+                   "rjmp .+0"
+                   "\n\t" // 2    nop nop      (T =  3)
+                   "ld   %[byte] , %a[ptr]+"
+                   "\n\t" // 2    b = *ptr++   (T =  5)
+                   "out  %[port] , %[next]"
+                   "\n\t" // 1    PORT = next  (T =  6)
+                   "mov  %[next] , %[lo]"
+                   "\n\t" // 1    next = lo    (T =  7)
+                   "sbrc %[byte] , 7"
+                   "\n\t" // 1-2  if(b & 0x80) (T =  8)
+                   "mov %[next] , %[hi]"
+                   "\n\t" // 0-1    next = hi  (T =  9)
+                   "nop"
+                   "\n\t" // 1                 (T = 10)
+                   "out  %[port] , %[lo]"
+                   "\n\t" // 1    PORT = lo    (T = 11)
+                   "sbiw %[count], 1"
+                   "\n\t" // 2    i--          (T = 13)
+                   "brne headD"
+                   "\n\t" // 2    if(i != 0) -> (next byte)
+                   "rjmp doneD"
+                   "\n\t"
+                   "bitTimeD:"
+                   "\n\t" //      nop nop nop     (T =  4)
+                   "out  %[port], %[next]"
+                   "\n\t" // 1    PORT = next     (T =  5)
+                   "mov  %[next], %[lo]"
+                   "\n\t" // 1    next = lo       (T =  6)
+                   "rol  %[byte]"
+                   "\n\t" // 1    b <<= 1         (T =  7)
+                   "sbrc %[byte], 7"
+                   "\n\t" // 1-2  if(b & 0x80)    (T =  8)
+                   "mov %[next], %[hi]"
+                   "\n\t" // 0-1   next = hi      (T =  9)
+                   "nop"
+                   "\n\t" // 1                    (T = 10)
+                   "out  %[port], %[lo]"
+                   "\n\t" // 1    PORT = lo       (T = 11)
+                   "ret"
+                   "\n\t" // 4    nop nop nop nop (T = 15)
+                   "doneD:"
+                   "\n"
+                   : [byte] "+r"(b), [next] "+r"(next), [count] "+w"(i)
+                   : [port] "I"(_SFR_IO_ADDR(PORTD)), [ptr] "e"(ptr),
+                     [hi] "r"(hi), [lo] "r"(lo));
+
+#if defined(PORTB) || defined(PORTC) || defined(PORTF)
     } else // other PORT(s)
- #endif // defined(PORTB/C/F)
+#endif // defined(PORTB/C/F)
 #endif // defined(PORTD)
 
     // PORTB OUTPUT ----------------------------------------------------
 
 #if defined(PORTB)
- #if defined(PORTD) || defined(PORTC) || defined(PORTF)
-    if(port == &PORTB) {
- #endif // defined(PORTD/C/F)
+#if defined(PORTD) || defined(PORTC) || defined(PORTF)
+        if (port == &PORTB) {
+#endif // defined(PORTD/C/F)
 
-      hi   = PORTB |  pinMask;
-      lo   = PORTB & ~pinMask;
+      hi = PORTB | pinMask;
+      lo = PORTB & ~pinMask;
       next = lo;
-      if(b & 0x80) next = hi;
+      if (b & 0x80)
+        next = hi;
 
       // Same as above, just set for PORTB & stripped of comments
-      asm volatile(
-       "headB:"                   "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeB"          "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeB"          "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeB"          "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeB"          "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeB"          "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeB"          "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeB"          "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "ld   %[byte] , %a[ptr]+" "\n\t"
-        "out  %[port] , %[next]"  "\n\t"
-        "mov  %[next] , %[lo]"    "\n\t"
-        "sbrc %[byte] , 7"        "\n\t"
-         "mov %[next] , %[hi]"    "\n\t"
-        "nop"                     "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "sbiw %[count], 1"        "\n\t"
-        "brne headB"              "\n\t"
-         "rjmp doneB"             "\n\t"
-        "bitTimeB:"               "\n\t"
-         "out  %[port], %[next]"  "\n\t"
-         "mov  %[next], %[lo]"    "\n\t"
-         "rol  %[byte]"           "\n\t"
-         "sbrc %[byte], 7"        "\n\t"
-          "mov %[next], %[hi]"    "\n\t"
-         "nop"                    "\n\t"
-         "out  %[port], %[lo]"    "\n\t"
-         "ret"                    "\n\t"
-         "doneB:"                 "\n"
-        : [byte] "+r" (b), [next] "+r" (next), [count] "+w" (i)
-        : [port] "I" (_SFR_IO_ADDR(PORTB)), [ptr] "e" (ptr), [hi] "r" (hi),
-          [lo] "r" (lo));
-
- #if defined(PORTD) || defined(PORTC) || defined(PORTF)
+      asm volatile("headB:"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeB"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeB"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeB"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeB"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeB"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeB"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeB"
+                   "\n\t"
+                   "out  %[port] , %[hi]"
+                   "\n\t"
+                   "rjmp .+0"
+                   "\n\t"
+                   "ld   %[byte] , %a[ptr]+"
+                   "\n\t"
+                   "out  %[port] , %[next]"
+                   "\n\t"
+                   "mov  %[next] , %[lo]"
+                   "\n\t"
+                   "sbrc %[byte] , 7"
+                   "\n\t"
+                   "mov %[next] , %[hi]"
+                   "\n\t"
+                   "nop"
+                   "\n\t"
+                   "out  %[port] , %[lo]"
+                   "\n\t"
+                   "sbiw %[count], 1"
+                   "\n\t"
+                   "brne headB"
+                   "\n\t"
+                   "rjmp doneB"
+                   "\n\t"
+                   "bitTimeB:"
+                   "\n\t"
+                   "out  %[port], %[next]"
+                   "\n\t"
+                   "mov  %[next], %[lo]"
+                   "\n\t"
+                   "rol  %[byte]"
+                   "\n\t"
+                   "sbrc %[byte], 7"
+                   "\n\t"
+                   "mov %[next], %[hi]"
+                   "\n\t"
+                   "nop"
+                   "\n\t"
+                   "out  %[port], %[lo]"
+                   "\n\t"
+                   "ret"
+                   "\n\t"
+                   "doneB:"
+                   "\n"
+                   : [byte] "+r"(b), [next] "+r"(next), [count] "+w"(i)
+                   : [port] "I"(_SFR_IO_ADDR(PORTB)), [ptr] "e"(ptr),
+                     [hi] "r"(hi), [lo] "r"(lo));
+
+#if defined(PORTD) || defined(PORTC) || defined(PORTF)
     }
- #endif
- #if defined(PORTC) || defined(PORTF)
+#endif
+#if defined(PORTC) || defined(PORTF)
     else
- #endif // defined(PORTC/F)
+#endif // defined(PORTC/F)
 #endif // defined(PORTB)
 
     // PORTC OUTPUT ----------------------------------------------------
 
 #if defined(PORTC)
- #if defined(PORTD) || defined(PORTB) || defined(PORTF)
-    if(port == &PORTC) {
- #endif // defined(PORTD/B/F)
+#if defined(PORTD) || defined(PORTB) || defined(PORTF)
+        if (port == &PORTC) {
+#endif // defined(PORTD/B/F)
 
-      hi   = PORTC |  pinMask;
-      lo   = PORTC & ~pinMask;
+      hi = PORTC | pinMask;
+      lo = PORTC & ~pinMask;
       next = lo;
-      if(b & 0x80) next = hi;
+      if (b & 0x80)
+        next = hi;
 
       // Same as above, just set for PORTC & stripped of comments
-      asm volatile(
-       "headC:"                   "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeC"          "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeC"          "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeC"          "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeC"          "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeC"          "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeC"          "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeC"          "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "ld   %[byte] , %a[ptr]+" "\n\t"
-        "out  %[port] , %[next]"  "\n\t"
-        "mov  %[next] , %[lo]"    "\n\t"
-        "sbrc %[byte] , 7"        "\n\t"
-         "mov %[next] , %[hi]"    "\n\t"
-        "nop"                     "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "sbiw %[count], 1"        "\n\t"
-        "brne headC"              "\n\t"
-         "rjmp doneC"             "\n\t"
-        "bitTimeC:"               "\n\t"
-         "out  %[port], %[next]"  "\n\t"
-         "mov  %[next], %[lo]"    "\n\t"
-         "rol  %[byte]"           "\n\t"
-         "sbrc %[byte], 7"        "\n\t"
-          "mov %[next], %[hi]"    "\n\t"
-         "nop"                    "\n\t"
-         "out  %[port], %[lo]"    "\n\t"
-         "ret"                    "\n\t"
-         "doneC:"                 "\n"
-        : [byte] "+r" (b), [next] "+r" (next), [count] "+w" (i)
-        : [port] "I" (_SFR_IO_ADDR(PORTC)), [ptr] "e" (ptr), [hi] "r" (hi),
-          [lo] "r" (lo));
-
- #if defined(PORTD) || defined(PORTB) || defined(PORTF)
+      asm volatile("headC:"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeC"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeC"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeC"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeC"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeC"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeC"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeC"
+                   "\n\t"
+                   "out  %[port] , %[hi]"
+                   "\n\t"
+                   "rjmp .+0"
+                   "\n\t"
+                   "ld   %[byte] , %a[ptr]+"
+                   "\n\t"
+                   "out  %[port] , %[next]"
+                   "\n\t"
+                   "mov  %[next] , %[lo]"
+                   "\n\t"
+                   "sbrc %[byte] , 7"
+                   "\n\t"
+                   "mov %[next] , %[hi]"
+                   "\n\t"
+                   "nop"
+                   "\n\t"
+                   "out  %[port] , %[lo]"
+                   "\n\t"
+                   "sbiw %[count], 1"
+                   "\n\t"
+                   "brne headC"
+                   "\n\t"
+                   "rjmp doneC"
+                   "\n\t"
+                   "bitTimeC:"
+                   "\n\t"
+                   "out  %[port], %[next]"
+                   "\n\t"
+                   "mov  %[next], %[lo]"
+                   "\n\t"
+                   "rol  %[byte]"
+                   "\n\t"
+                   "sbrc %[byte], 7"
+                   "\n\t"
+                   "mov %[next], %[hi]"
+                   "\n\t"
+                   "nop"
+                   "\n\t"
+                   "out  %[port], %[lo]"
+                   "\n\t"
+                   "ret"
+                   "\n\t"
+                   "doneC:"
+                   "\n"
+                   : [byte] "+r"(b), [next] "+r"(next), [count] "+w"(i)
+                   : [port] "I"(_SFR_IO_ADDR(PORTC)), [ptr] "e"(ptr),
+                     [hi] "r"(hi), [lo] "r"(lo));
+
+#if defined(PORTD) || defined(PORTB) || defined(PORTF)
     }
- #endif // defined(PORTD/B/F)
- #if defined(PORTF)
+#endif // defined(PORTD/B/F)
+#if defined(PORTF)
     else
- #endif
+#endif
 #endif // defined(PORTC)
 
     // PORTF OUTPUT ----------------------------------------------------
 
 #if defined(PORTF)
- #if defined(PORTD) || defined(PORTB) || defined(PORTC)
-    if(port == &PORTF) {
- #endif // defined(PORTD/B/C)
+#if defined(PORTD) || defined(PORTB) || defined(PORTC)
+        if (port == &PORTF) {
+#endif // defined(PORTD/B/C)
 
-      hi   = PORTF |  pinMask;
-      lo   = PORTF & ~pinMask;
+      hi = PORTF | pinMask;
+      lo = PORTF & ~pinMask;
       next = lo;
-      if(b & 0x80) next = hi;
+      if (b & 0x80)
+        next = hi;
 
       // Same as above, just set for PORTF & stripped of comments
-      asm volatile(
-       "headF:"                   "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeC"          "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeC"          "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeC"          "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeC"          "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeC"          "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeC"          "\n\t"
-        "out   %[port], %[hi]"    "\n\t"
-        "rcall bitTimeC"          "\n\t"
-        "out  %[port] , %[hi]"    "\n\t"
-        "rjmp .+0"                "\n\t"
-        "ld   %[byte] , %a[ptr]+" "\n\t"
-        "out  %[port] , %[next]"  "\n\t"
-        "mov  %[next] , %[lo]"    "\n\t"
-        "sbrc %[byte] , 7"        "\n\t"
-         "mov %[next] , %[hi]"    "\n\t"
-        "nop"                     "\n\t"
-        "out  %[port] , %[lo]"    "\n\t"
-        "sbiw %[count], 1"        "\n\t"
-        "brne headF"              "\n\t"
-         "rjmp doneC"             "\n\t"
-        "bitTimeC:"               "\n\t"
-         "out  %[port], %[next]"  "\n\t"
-         "mov  %[next], %[lo]"    "\n\t"
-         "rol  %[byte]"           "\n\t"
-         "sbrc %[byte], 7"        "\n\t"
-          "mov %[next], %[hi]"    "\n\t"
-         "nop"                    "\n\t"
-         "out  %[port], %[lo]"    "\n\t"
-         "ret"                    "\n\t"
-         "doneC:"                 "\n"
-        : [byte] "+r" (b), [next] "+r" (next), [count] "+w" (i)
-        : [port] "I" (_SFR_IO_ADDR(PORTF)), [ptr] "e" (ptr), [hi] "r" (hi),
-          [lo] "r" (lo));
-
- #if defined(PORTD) || defined(PORTB) || defined(PORTC)
+      asm volatile("headF:"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeC"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeC"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeC"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeC"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeC"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeC"
+                   "\n\t"
+                   "out   %[port], %[hi]"
+                   "\n\t"
+                   "rcall bitTimeC"
+                   "\n\t"
+                   "out  %[port] , %[hi]"
+                   "\n\t"
+                   "rjmp .+0"
+                   "\n\t"
+                   "ld   %[byte] , %a[ptr]+"
+                   "\n\t"
+                   "out  %[port] , %[next]"
+                   "\n\t"
+                   "mov  %[next] , %[lo]"
+                   "\n\t"
+                   "sbrc %[byte] , 7"
+                   "\n\t"
+                   "mov %[next] , %[hi]"
+                   "\n\t"
+                   "nop"
+                   "\n\t"
+                   "out  %[port] , %[lo]"
+                   "\n\t"
+                   "sbiw %[count], 1"
+                   "\n\t"
+                   "brne headF"
+                   "\n\t"
+                   "rjmp doneC"
+                   "\n\t"
+                   "bitTimeC:"
+                   "\n\t"
+                   "out  %[port], %[next]"
+                   "\n\t"
+                   "mov  %[next], %[lo]"
+                   "\n\t"
+                   "rol  %[byte]"
+                   "\n\t"
+                   "sbrc %[byte], 7"
+                   "\n\t"
+                   "mov %[next], %[hi]"
+                   "\n\t"
+                   "nop"
+                   "\n\t"
+                   "out  %[port], %[lo]"
+                   "\n\t"
+                   "ret"
+                   "\n\t"
+                   "doneC:"
+                   "\n"
+                   : [byte] "+r"(b), [next] "+r"(next), [count] "+w"(i)
+                   : [port] "I"(_SFR_IO_ADDR(PORTF)), [ptr] "e"(ptr),
+                     [hi] "r"(hi), [lo] "r"(lo));
+
+#if defined(PORTD) || defined(PORTB) || defined(PORTC)
     }
- #endif // defined(PORTD/B/C)
+#endif // defined(PORTD/B/C)
 #endif // defined(PORTF)
 
 #if defined(NEO_KHZ400)
@@ -974,45 +1447,64 @@ void Adafruit_NeoPixel::show(void) {
 
     volatile uint8_t next, bit;
 
-    hi   = *port |  pinMask;
-    lo   = *port & ~pinMask;
+    hi = *port | pinMask;
+    lo = *port & ~pinMask;
     next = lo;
-    bit  = 8;
-
-    asm volatile(
-     "head30:"                  "\n\t" // Clk  Pseudocode    (T =  0)
-      "st   %a[port], %[hi]"    "\n\t" // 2    PORT = hi     (T =  2)
-      "sbrc %[byte] , 7"        "\n\t" // 1-2  if(b & 128)
-       "mov  %[next], %[hi]"    "\n\t" // 0-1   next = hi    (T =  4)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T =  6)
-      "st   %a[port], %[next]"  "\n\t" // 2    PORT = next   (T =  8)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 10)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 12)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 14)
-      "nop"                     "\n\t" // 1    nop           (T = 15)
-      "st   %a[port], %[lo]"    "\n\t" // 2    PORT = lo     (T = 17)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 19)
-      "dec  %[bit]"             "\n\t" // 1    bit--         (T = 20)
-      "breq nextbyte30"         "\n\t" // 1-2  if(bit == 0)
-      "rol  %[byte]"            "\n\t" // 1    b <<= 1       (T = 22)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 24)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 26)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 28)
-      "rjmp head30"             "\n\t" // 2    -> head30 (next bit out)
-     "nextbyte30:"              "\n\t" //                    (T = 22)
-      "nop"                     "\n\t" // 1    nop           (T = 23)
-      "ldi  %[bit]  , 8"        "\n\t" // 1    bit = 8       (T = 24)
-      "ld   %[byte] , %a[ptr]+" "\n\t" // 2    b = *ptr++    (T = 26)
-      "sbiw %[count], 1"        "\n\t" // 2    i--           (T = 28)
-      "brne head30"             "\n"   // 1-2  if(i != 0) -> (next byte)
-      : [port]  "+e" (port),
-        [byte]  "+r" (b),
-        [bit]   "+r" (bit),
-        [next]  "+r" (next),
-        [count] "+w" (i)
-      : [hi]     "r" (hi),
-        [lo]     "r" (lo),
-        [ptr]    "e" (ptr));
+    bit = 8;
+
+    asm volatile("head30:"
+                 "\n\t" // Clk  Pseudocode    (T =  0)
+                 "st   %a[port], %[hi]"
+                 "\n\t" // 2    PORT = hi     (T =  2)
+                 "sbrc %[byte] , 7"
+                 "\n\t" // 1-2  if(b & 128)
+                 "mov  %[next], %[hi]"
+                 "\n\t" // 0-1   next = hi    (T =  4)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T =  6)
+                 "st   %a[port], %[next]"
+                 "\n\t" // 2    PORT = next   (T =  8)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 10)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 12)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 14)
+                 "nop"
+                 "\n\t" // 1    nop           (T = 15)
+                 "st   %a[port], %[lo]"
+                 "\n\t" // 2    PORT = lo     (T = 17)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 19)
+                 "dec  %[bit]"
+                 "\n\t" // 1    bit--         (T = 20)
+                 "breq nextbyte30"
+                 "\n\t" // 1-2  if(bit == 0)
+                 "rol  %[byte]"
+                 "\n\t" // 1    b <<= 1       (T = 22)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 24)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 26)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 28)
+                 "rjmp head30"
+                 "\n\t" // 2    -> head30 (next bit out)
+                 "nextbyte30:"
+                 "\n\t" //                    (T = 22)
+                 "nop"
+                 "\n\t" // 1    nop           (T = 23)
+                 "ldi  %[bit]  , 8"
+                 "\n\t" // 1    bit = 8       (T = 24)
+                 "ld   %[byte] , %a[ptr]+"
+                 "\n\t" // 2    b = *ptr++    (T = 26)
+                 "sbiw %[count], 1"
+                 "\n\t" // 2    i--           (T = 28)
+                 "brne head30"
+                 "\n" // 1-2  if(i != 0) -> (next byte)
+                 : [port] "+e"(port), [byte] "+r"(b), [bit] "+r"(bit),
+                   [next] "+r"(next), [count] "+w"(i)
+                 : [hi] "r"(hi), [lo] "r"(lo), [ptr] "e"(ptr));
   }
 #endif // NEO_KHZ400
 
@@ -1020,7 +1512,7 @@ void Adafruit_NeoPixel::show(void) {
 #elif (F_CPU >= 15400000UL) && (F_CPU <= 19000000L)
 
 #if defined(NEO_KHZ400) // 800 KHz check needed only if 400 KHz support enabled
-  if(is800KHz) {
+  if (is800KHz) {
 #endif
 
     // WS2811 and WS2812 have different hi/lo duty cycles; this is
@@ -1031,42 +1523,58 @@ void Adafruit_NeoPixel::show(void) {
 
     volatile uint8_t next, bit;
 
-    hi   = *port |  pinMask;
-    lo   = *port & ~pinMask;
+    hi = *port | pinMask;
+    lo = *port & ~pinMask;
     next = lo;
-    bit  = 8;
-
-    asm volatile(
-     "head20:"                   "\n\t" // Clk  Pseudocode    (T =  0)
-      "st   %a[port],  %[hi]"    "\n\t" // 2    PORT = hi     (T =  2)
-      "sbrc %[byte],  7"         "\n\t" // 1-2  if(b & 128)
-       "mov  %[next], %[hi]"     "\n\t" // 0-1   next = hi    (T =  4)
-      "dec  %[bit]"              "\n\t" // 1    bit--         (T =  5)
-      "st   %a[port],  %[next]"  "\n\t" // 2    PORT = next   (T =  7)
-      "mov  %[next] ,  %[lo]"    "\n\t" // 1    next = lo     (T =  8)
-      "breq nextbyte20"          "\n\t" // 1-2  if(bit == 0) (from dec above)
-      "rol  %[byte]"             "\n\t" // 1    b <<= 1       (T = 10)
-      "rjmp .+0"                 "\n\t" // 2    nop nop       (T = 12)
-      "nop"                      "\n\t" // 1    nop           (T = 13)
-      "st   %a[port],  %[lo]"    "\n\t" // 2    PORT = lo     (T = 15)
-      "nop"                      "\n\t" // 1    nop           (T = 16)
-      "rjmp .+0"                 "\n\t" // 2    nop nop       (T = 18)
-      "rjmp head20"              "\n\t" // 2    -> head20 (next bit out)
-     "nextbyte20:"               "\n\t" //                    (T = 10)
-      "ldi  %[bit]  ,  8"        "\n\t" // 1    bit = 8       (T = 11)
-      "ld   %[byte] ,  %a[ptr]+" "\n\t" // 2    b = *ptr++    (T = 13)
-      "st   %a[port], %[lo]"     "\n\t" // 2    PORT = lo     (T = 15)
-      "nop"                      "\n\t" // 1    nop           (T = 16)
-      "sbiw %[count], 1"         "\n\t" // 2    i--           (T = 18)
-       "brne head20"             "\n"   // 2    if(i != 0) -> (next byte)
-      : [port]  "+e" (port),
-        [byte]  "+r" (b),
-        [bit]   "+r" (bit),
-        [next]  "+r" (next),
-        [count] "+w" (i)
-      : [ptr]    "e" (ptr),
-        [hi]     "r" (hi),
-        [lo]     "r" (lo));
+    bit = 8;
+
+    asm volatile("head20:"
+                 "\n\t" // Clk  Pseudocode    (T =  0)
+                 "st   %a[port],  %[hi]"
+                 "\n\t" // 2    PORT = hi     (T =  2)
+                 "sbrc %[byte],  7"
+                 "\n\t" // 1-2  if(b & 128)
+                 "mov  %[next], %[hi]"
+                 "\n\t" // 0-1   next = hi    (T =  4)
+                 "dec  %[bit]"
+                 "\n\t" // 1    bit--         (T =  5)
+                 "st   %a[port],  %[next]"
+                 "\n\t" // 2    PORT = next   (T =  7)
+                 "mov  %[next] ,  %[lo]"
+                 "\n\t" // 1    next = lo     (T =  8)
+                 "breq nextbyte20"
+                 "\n\t" // 1-2  if(bit == 0) (from dec above)
+                 "rol  %[byte]"
+                 "\n\t" // 1    b <<= 1       (T = 10)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 12)
+                 "nop"
+                 "\n\t" // 1    nop           (T = 13)
+                 "st   %a[port],  %[lo]"
+                 "\n\t" // 2    PORT = lo     (T = 15)
+                 "nop"
+                 "\n\t" // 1    nop           (T = 16)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 18)
+                 "rjmp head20"
+                 "\n\t" // 2    -> head20 (next bit out)
+                 "nextbyte20:"
+                 "\n\t" //                    (T = 10)
+                 "ldi  %[bit]  ,  8"
+                 "\n\t" // 1    bit = 8       (T = 11)
+                 "ld   %[byte] ,  %a[ptr]+"
+                 "\n\t" // 2    b = *ptr++    (T = 13)
+                 "st   %a[port], %[lo]"
+                 "\n\t" // 2    PORT = lo     (T = 15)
+                 "nop"
+                 "\n\t" // 1    nop           (T = 16)
+                 "sbiw %[count], 1"
+                 "\n\t" // 2    i--           (T = 18)
+                 "brne head20"
+                 "\n" // 2    if(i != 0) -> (next byte)
+                 : [port] "+e"(port), [byte] "+r"(b), [bit] "+r"(bit),
+                   [next] "+r"(next), [count] "+w"(i)
+                 : [ptr] "e"(ptr), [hi] "r"(hi), [lo] "r"(lo));
 
 #if defined(NEO_KHZ400)
   } else { // 400 KHz
@@ -1078,269 +1586,368 @@ void Adafruit_NeoPixel::show(void) {
 
     volatile uint8_t next, bit;
 
-    hi   = *port |  pinMask;
-    lo   = *port & ~pinMask;
+    hi = *port | pinMask;
+    lo = *port & ~pinMask;
     next = lo;
-    bit  = 8;
-
-    asm volatile(
-     "head40:"                  "\n\t" // Clk  Pseudocode    (T =  0)
-      "st   %a[port], %[hi]"    "\n\t" // 2    PORT = hi     (T =  2)
-      "sbrc %[byte] , 7"        "\n\t" // 1-2  if(b & 128)
-       "mov  %[next] , %[hi]"   "\n\t" // 0-1   next = hi    (T =  4)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T =  6)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T =  8)
-      "st   %a[port], %[next]"  "\n\t" // 2    PORT = next   (T = 10)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 12)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 14)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 16)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 18)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 20)
-      "st   %a[port], %[lo]"    "\n\t" // 2    PORT = lo     (T = 22)
-      "nop"                     "\n\t" // 1    nop           (T = 23)
-      "mov  %[next] , %[lo]"    "\n\t" // 1    next = lo     (T = 24)
-      "dec  %[bit]"             "\n\t" // 1    bit--         (T = 25)
-      "breq nextbyte40"         "\n\t" // 1-2  if(bit == 0)
-      "rol  %[byte]"            "\n\t" // 1    b <<= 1       (T = 27)
-      "nop"                     "\n\t" // 1    nop           (T = 28)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 30)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 32)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 34)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 36)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 38)
-      "rjmp head40"             "\n\t" // 2    -> head40 (next bit out)
-     "nextbyte40:"              "\n\t" //                    (T = 27)
-      "ldi  %[bit]  , 8"        "\n\t" // 1    bit = 8       (T = 28)
-      "ld   %[byte] , %a[ptr]+" "\n\t" // 2    b = *ptr++    (T = 30)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 32)
-      "st   %a[port], %[lo]"    "\n\t" // 2    PORT = lo     (T = 34)
-      "rjmp .+0"                "\n\t" // 2    nop nop       (T = 36)
-      "sbiw %[count], 1"        "\n\t" // 2    i--           (T = 38)
-      "brne head40"             "\n"   // 1-2  if(i != 0) -> (next byte)
-      : [port]  "+e" (port),
-        [byte]  "+r" (b),
-        [bit]   "+r" (bit),
-        [next]  "+r" (next),
-        [count] "+w" (i)
-      : [ptr]    "e" (ptr),
-        [hi]     "r" (hi),
-        [lo]     "r" (lo));
+    bit = 8;
+
+    asm volatile("head40:"
+                 "\n\t" // Clk  Pseudocode    (T =  0)
+                 "st   %a[port], %[hi]"
+                 "\n\t" // 2    PORT = hi     (T =  2)
+                 "sbrc %[byte] , 7"
+                 "\n\t" // 1-2  if(b & 128)
+                 "mov  %[next] , %[hi]"
+                 "\n\t" // 0-1   next = hi    (T =  4)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T =  6)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T =  8)
+                 "st   %a[port], %[next]"
+                 "\n\t" // 2    PORT = next   (T = 10)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 12)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 14)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 16)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 18)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 20)
+                 "st   %a[port], %[lo]"
+                 "\n\t" // 2    PORT = lo     (T = 22)
+                 "nop"
+                 "\n\t" // 1    nop           (T = 23)
+                 "mov  %[next] , %[lo]"
+                 "\n\t" // 1    next = lo     (T = 24)
+                 "dec  %[bit]"
+                 "\n\t" // 1    bit--         (T = 25)
+                 "breq nextbyte40"
+                 "\n\t" // 1-2  if(bit == 0)
+                 "rol  %[byte]"
+                 "\n\t" // 1    b <<= 1       (T = 27)
+                 "nop"
+                 "\n\t" // 1    nop           (T = 28)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 30)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 32)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 34)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 36)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 38)
+                 "rjmp head40"
+                 "\n\t" // 2    -> head40 (next bit out)
+                 "nextbyte40:"
+                 "\n\t" //                    (T = 27)
+                 "ldi  %[bit]  , 8"
+                 "\n\t" // 1    bit = 8       (T = 28)
+                 "ld   %[byte] , %a[ptr]+"
+                 "\n\t" // 2    b = *ptr++    (T = 30)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 32)
+                 "st   %a[port], %[lo]"
+                 "\n\t" // 2    PORT = lo     (T = 34)
+                 "rjmp .+0"
+                 "\n\t" // 2    nop nop       (T = 36)
+                 "sbiw %[count], 1"
+                 "\n\t" // 2    i--           (T = 38)
+                 "brne head40"
+                 "\n" // 1-2  if(i != 0) -> (next byte)
+                 : [port] "+e"(port), [byte] "+r"(b), [bit] "+r"(bit),
+                   [next] "+r"(next), [count] "+w"(i)
+                 : [ptr] "e"(ptr), [hi] "r"(hi), [lo] "r"(lo));
   }
 #endif // NEO_KHZ400
 
 #else
- #error "CPU SPEED NOT SUPPORTED"
+#error "CPU SPEED NOT SUPPORTED"
 #endif // end F_CPU ifdefs on __AVR__
 
-// END AVR ----------------------------------------------------------------
-
+  // END AVR ----------------------------------------------------------------
 
 #elif defined(__arm__)
 
-// ARM MCUs -- Teensy 3.0, 3.1, LC, Arduino Due ---------------------------
+    // ARM MCUs -- Teensy 3.0, 3.1, LC, Arduino Due, RP2040 -------------------
+
+#if defined(ARDUINO_ARCH_RP2040)
+  // Use PIO
+  rp2040Show(pin, pixels, numBytes, is800KHz);
 
-#if defined(TEENSYDUINO) && defined(KINETISK) // Teensy 3.0, 3.1, 3.2, 3.5, 3.6
-#define CYCLES_800_T0H  (F_CPU / 4000000)
-#define CYCLES_800_T1H  (F_CPU / 1250000)
-#define CYCLES_800      (F_CPU /  800000)
-#define CYCLES_400_T0H  (F_CPU / 2000000)
-#define CYCLES_400_T1H  (F_CPU /  833333)
-#define CYCLES_400      (F_CPU /  400000)
+#elif defined(TEENSYDUINO) &&                                                  \
+    defined(KINETISK) // Teensy 3.0, 3.1, 3.2, 3.5, 3.6
+#define CYCLES_800_T0H (F_CPU / 4000000)
+#define CYCLES_800_T1H (F_CPU / 1250000)
+#define CYCLES_800 (F_CPU / 800000)
+#define CYCLES_400_T0H (F_CPU / 2000000)
+#define CYCLES_400_T1H (F_CPU / 833333)
+#define CYCLES_400 (F_CPU / 400000)
 
-  uint8_t          *p   = pixels,
-                   *end = p + numBytes, pix, mask;
-  volatile uint8_t *set = portSetRegister(pin),
-                   *clr = portClearRegister(pin);
-  uint32_t          cyc;
+  uint8_t *p = pixels, *end = p + numBytes, pix, mask;
+  volatile uint8_t *set = portSetRegister(pin), *clr = portClearRegister(pin);
+  uint32_t cyc;
 
-  ARM_DEMCR    |= ARM_DEMCR_TRCENA;
+  ARM_DEMCR |= ARM_DEMCR_TRCENA;
   ARM_DWT_CTRL |= ARM_DWT_CTRL_CYCCNTENA;
 
 #if defined(NEO_KHZ400) // 800 KHz check needed only if 400 KHz support enabled
-  if(is800KHz) {
+  if (is800KHz) {
 #endif
     cyc = ARM_DWT_CYCCNT + CYCLES_800;
-    while(p < end) {
+    while (p < end) {
       pix = *p++;
-      for(mask = 0x80; mask; mask >>= 1) {
-        while(ARM_DWT_CYCCNT - cyc < CYCLES_800);
-        cyc  = ARM_DWT_CYCCNT;
+      for (mask = 0x80; mask; mask >>= 1) {
+        while (ARM_DWT_CYCCNT - cyc < CYCLES_800)
+          ;
+        cyc = ARM_DWT_CYCCNT;
         *set = 1;
-        if(pix & mask) {
-          while(ARM_DWT_CYCCNT - cyc < CYCLES_800_T1H);
+        if (pix & mask) {
+          while (ARM_DWT_CYCCNT - cyc < CYCLES_800_T1H)
+            ;
         } else {
-          while(ARM_DWT_CYCCNT - cyc < CYCLES_800_T0H);
+          while (ARM_DWT_CYCCNT - cyc < CYCLES_800_T0H)
+            ;
         }
         *clr = 1;
       }
     }
-    while(ARM_DWT_CYCCNT - cyc < CYCLES_800);
+    while (ARM_DWT_CYCCNT - cyc < CYCLES_800)
+      ;
 #if defined(NEO_KHZ400)
   } else { // 400 kHz bitstream
     cyc = ARM_DWT_CYCCNT + CYCLES_400;
-    while(p < end) {
+    while (p < end) {
       pix = *p++;
-      for(mask = 0x80; mask; mask >>= 1) {
-        while(ARM_DWT_CYCCNT - cyc < CYCLES_400);
-        cyc  = ARM_DWT_CYCCNT;
+      for (mask = 0x80; mask; mask >>= 1) {
+        while (ARM_DWT_CYCCNT - cyc < CYCLES_400)
+          ;
+        cyc = ARM_DWT_CYCCNT;
         *set = 1;
-        if(pix & mask) {
-          while(ARM_DWT_CYCCNT - cyc < CYCLES_400_T1H);
+        if (pix & mask) {
+          while (ARM_DWT_CYCCNT - cyc < CYCLES_400_T1H)
+            ;
         } else {
-          while(ARM_DWT_CYCCNT - cyc < CYCLES_400_T0H);
+          while (ARM_DWT_CYCCNT - cyc < CYCLES_400_T0H)
+            ;
         }
         *clr = 1;
       }
     }
-    while(ARM_DWT_CYCCNT - cyc < CYCLES_400);
+    while (ARM_DWT_CYCCNT - cyc < CYCLES_400)
+      ;
   }
 #endif // NEO_KHZ400
 
 #elif defined(TEENSYDUINO) && (defined(__IMXRT1052__) || defined(__IMXRT1062__))
-#define CYCLES_800_T0H  (F_CPU_ACTUAL / 4000000)
-#define CYCLES_800_T1H  (F_CPU_ACTUAL / 1250000)
-#define CYCLES_800      (F_CPU_ACTUAL /  800000)
-#define CYCLES_400_T0H  (F_CPU_ACTUAL / 2000000)
-#define CYCLES_400_T1H  (F_CPU_ACTUAL /  833333)
-#define CYCLES_400      (F_CPU_ACTUAL /  400000)
-
-  uint8_t           *p   = pixels,
-                    *end = p + numBytes, pix, mask;
-  volatile uint32_t *set = portSetRegister(pin),
-                    *clr = portClearRegister(pin);
-  uint32_t          cyc,
-                    msk = digitalPinToBitMask(pin);
-
-  ARM_DEMCR    |= ARM_DEMCR_TRCENA;
+#define CYCLES_800_T0H (F_CPU_ACTUAL / 4000000)
+#define CYCLES_800_T1H (F_CPU_ACTUAL / 1250000)
+#define CYCLES_800 (F_CPU_ACTUAL / 800000)
+#define CYCLES_400_T0H (F_CPU_ACTUAL / 2000000)
+#define CYCLES_400_T1H (F_CPU_ACTUAL / 833333)
+#define CYCLES_400 (F_CPU_ACTUAL / 400000)
+
+  uint8_t *p = pixels, *end = p + numBytes, pix, mask;
+  volatile uint32_t *set = portSetRegister(pin), *clr = portClearRegister(pin);
+  uint32_t cyc, msk = digitalPinToBitMask(pin);
+
+  ARM_DEMCR |= ARM_DEMCR_TRCENA;
   ARM_DWT_CTRL |= ARM_DWT_CTRL_CYCCNTENA;
 
 #if defined(NEO_KHZ400) // 800 KHz check needed only if 400 KHz support enabled
-  if(is800KHz) {
+  if (is800KHz) {
 #endif
     cyc = ARM_DWT_CYCCNT + CYCLES_800;
-    while(p < end) {
+    while (p < end) {
       pix = *p++;
-      for(mask = 0x80; mask; mask >>= 1) {
-        while(ARM_DWT_CYCCNT - cyc < CYCLES_800);
-        cyc  = ARM_DWT_CYCCNT;
+      for (mask = 0x80; mask; mask >>= 1) {
+        while (ARM_DWT_CYCCNT - cyc < CYCLES_800)
+          ;
+        cyc = ARM_DWT_CYCCNT;
         *set = msk;
-        if(pix & mask) {
-          while(ARM_DWT_CYCCNT - cyc < CYCLES_800_T1H);
+        if (pix & mask) {
+          while (ARM_DWT_CYCCNT - cyc < CYCLES_800_T1H)
+            ;
         } else {
-          while(ARM_DWT_CYCCNT - cyc < CYCLES_800_T0H);
+          while (ARM_DWT_CYCCNT - cyc < CYCLES_800_T0H)
+            ;
         }
         *clr = msk;
       }
     }
-    while(ARM_DWT_CYCCNT - cyc < CYCLES_800);
+    while (ARM_DWT_CYCCNT - cyc < CYCLES_800)
+      ;
 #if defined(NEO_KHZ400)
   } else { // 400 kHz bitstream
     cyc = ARM_DWT_CYCCNT + CYCLES_400;
-    while(p < end) {
+    while (p < end) {
       pix = *p++;
-      for(mask = 0x80; mask; mask >>= 1) {
-        while(ARM_DWT_CYCCNT - cyc < CYCLES_400);
-        cyc  = ARM_DWT_CYCCNT;
+      for (mask = 0x80; mask; mask >>= 1) {
+        while (ARM_DWT_CYCCNT - cyc < CYCLES_400)
+          ;
+        cyc = ARM_DWT_CYCCNT;
         *set = msk;
-        if(pix & mask) {
-          while(ARM_DWT_CYCCNT - cyc < CYCLES_400_T1H);
+        if (pix & mask) {
+          while (ARM_DWT_CYCCNT - cyc < CYCLES_400_T1H)
+            ;
         } else {
-          while(ARM_DWT_CYCCNT - cyc < CYCLES_400_T0H);
+          while (ARM_DWT_CYCCNT - cyc < CYCLES_400_T0H)
+            ;
         }
         *clr = msk;
       }
     }
-    while(ARM_DWT_CYCCNT - cyc < CYCLES_400);
+    while (ARM_DWT_CYCCNT - cyc < CYCLES_400)
+      ;
   }
 #endif // NEO_KHZ400
 
 #elif defined(TEENSYDUINO) && defined(__MKL26Z64__) // Teensy-LC
 
 #if F_CPU == 48000000
-  uint8_t          *p   = pixels,
-                    pix, count, dly,
-                    bitmask = digitalPinToBitMask(pin);
+  uint8_t *p = pixels, pix, count, dly, bitmask = digitalPinToBitMask(pin);
   volatile uint8_t *reg = portSetRegister(pin);
-  uint32_t          num = numBytes;
-  asm volatile(
-    "L%=_begin:"                      "\n\t"
-     "ldrb  %[pix], [%[p], #0]"       "\n\t"
-     "lsl   %[pix], #24"              "\n\t"
-     "movs  %[count], #7"             "\n\t"
-    "L%=_loop:"                       "\n\t"
-     "lsl   %[pix], #1"               "\n\t"
-     "bcs   L%=_loop_one"             "\n\t"
-     "L%=_loop_zero:"                 "\n\t"
-     "strb  %[bitmask], [%[reg], #0]" "\n\t"
-     "movs  %[dly], #4"               "\n\t"
-    "L%=_loop_delay_T0H:"             "\n\t"
-     "sub   %[dly], #1"               "\n\t"
-     "bne   L%=_loop_delay_T0H"       "\n\t"
-     "strb  %[bitmask], [%[reg], #4]" "\n\t"
-     "movs  %[dly], #13"              "\n\t"
-    "L%=_loop_delay_T0L:"             "\n\t"
-     "sub   %[dly], #1"               "\n\t"
-     "bne   L%=_loop_delay_T0L"       "\n\t"
-     "b     L%=_next"                 "\n\t"
-    "L%=_loop_one:"                   "\n\t"
-     "strb  %[bitmask], [%[reg], #0]" "\n\t"
-     "movs  %[dly], #13"              "\n\t"
-    "L%=_loop_delay_T1H:"             "\n\t"
-     "sub   %[dly], #1"               "\n\t"
-     "bne   L%=_loop_delay_T1H"       "\n\t"
-     "strb  %[bitmask], [%[reg], #4]" "\n\t"
-     "movs  %[dly], #4"               "\n\t"
-    "L%=_loop_delay_T1L:"             "\n\t"
-     "sub   %[dly], #1"               "\n\t"
-     "bne   L%=_loop_delay_T1L"       "\n\t"
-     "nop"                            "\n\t"
-    "L%=_next:"                       "\n\t"
-     "sub   %[count], #1"             "\n\t"
-     "bne   L%=_loop"                 "\n\t"
-     "lsl   %[pix], #1"               "\n\t"
-     "bcs   L%=_last_one"             "\n\t"
-    "L%=_last_zero:"                  "\n\t"
-     "strb  %[bitmask], [%[reg], #0]" "\n\t"
-     "movs  %[dly], #4"               "\n\t"
-    "L%=_last_delay_T0H:"             "\n\t"
-     "sub   %[dly], #1"               "\n\t"
-     "bne   L%=_last_delay_T0H"       "\n\t"
-     "strb  %[bitmask], [%[reg], #4]" "\n\t"
-     "movs  %[dly], #10"              "\n\t"
-    "L%=_last_delay_T0L:"             "\n\t"
-     "sub   %[dly], #1"               "\n\t"
-     "bne   L%=_last_delay_T0L"       "\n\t"
-     "b     L%=_repeat"               "\n\t"
-    "L%=_last_one:"                   "\n\t"
-     "strb  %[bitmask], [%[reg], #0]" "\n\t"
-     "movs  %[dly], #13"              "\n\t"
-    "L%=_last_delay_T1H:"             "\n\t"
-     "sub   %[dly], #1"               "\n\t"
-     "bne   L%=_last_delay_T1H"       "\n\t"
-     "strb  %[bitmask], [%[reg], #4]" "\n\t"
-     "movs  %[dly], #1"               "\n\t"
-    "L%=_last_delay_T1L:"             "\n\t"
-     "sub   %[dly], #1"               "\n\t"
-     "bne   L%=_last_delay_T1L"       "\n\t"
-     "nop"                            "\n\t"
-    "L%=_repeat:"                     "\n\t"
-     "add   %[p], #1"                 "\n\t"
-     "sub   %[num], #1"               "\n\t"
-     "bne   L%=_begin"                "\n\t"
-    "L%=_done:"                       "\n\t"
-    : [p]       "+r"  (p),
-      [pix]     "=&r" (pix),
-      [count]   "=&r" (count),
-      [dly]     "=&r" (dly),
-      [num]     "+r"  (num)
-    : [bitmask] "r"   (bitmask),
-      [reg]     "r"   (reg)
-  );
+  uint32_t num = numBytes;
+  asm volatile("L%=_begin:"
+               "\n\t"
+               "ldrb  %[pix], [%[p], #0]"
+               "\n\t"
+               "lsl   %[pix], #24"
+               "\n\t"
+               "movs  %[count], #7"
+               "\n\t"
+               "L%=_loop:"
+               "\n\t"
+               "lsl   %[pix], #1"
+               "\n\t"
+               "bcs   L%=_loop_one"
+               "\n\t"
+               "L%=_loop_zero:"
+               "\n\t"
+               "strb  %[bitmask], [%[reg], #0]"
+               "\n\t"
+               "movs  %[dly], #4"
+               "\n\t"
+               "L%=_loop_delay_T0H:"
+               "\n\t"
+               "sub   %[dly], #1"
+               "\n\t"
+               "bne   L%=_loop_delay_T0H"
+               "\n\t"
+               "strb  %[bitmask], [%[reg], #4]"
+               "\n\t"
+               "movs  %[dly], #13"
+               "\n\t"
+               "L%=_loop_delay_T0L:"
+               "\n\t"
+               "sub   %[dly], #1"
+               "\n\t"
+               "bne   L%=_loop_delay_T0L"
+               "\n\t"
+               "b     L%=_next"
+               "\n\t"
+               "L%=_loop_one:"
+               "\n\t"
+               "strb  %[bitmask], [%[reg], #0]"
+               "\n\t"
+               "movs  %[dly], #13"
+               "\n\t"
+               "L%=_loop_delay_T1H:"
+               "\n\t"
+               "sub   %[dly], #1"
+               "\n\t"
+               "bne   L%=_loop_delay_T1H"
+               "\n\t"
+               "strb  %[bitmask], [%[reg], #4]"
+               "\n\t"
+               "movs  %[dly], #4"
+               "\n\t"
+               "L%=_loop_delay_T1L:"
+               "\n\t"
+               "sub   %[dly], #1"
+               "\n\t"
+               "bne   L%=_loop_delay_T1L"
+               "\n\t"
+               "nop"
+               "\n\t"
+               "L%=_next:"
+               "\n\t"
+               "sub   %[count], #1"
+               "\n\t"
+               "bne   L%=_loop"
+               "\n\t"
+               "lsl   %[pix], #1"
+               "\n\t"
+               "bcs   L%=_last_one"
+               "\n\t"
+               "L%=_last_zero:"
+               "\n\t"
+               "strb  %[bitmask], [%[reg], #0]"
+               "\n\t"
+               "movs  %[dly], #4"
+               "\n\t"
+               "L%=_last_delay_T0H:"
+               "\n\t"
+               "sub   %[dly], #1"
+               "\n\t"
+               "bne   L%=_last_delay_T0H"
+               "\n\t"
+               "strb  %[bitmask], [%[reg], #4]"
+               "\n\t"
+               "movs  %[dly], #10"
+               "\n\t"
+               "L%=_last_delay_T0L:"
+               "\n\t"
+               "sub   %[dly], #1"
+               "\n\t"
+               "bne   L%=_last_delay_T0L"
+               "\n\t"
+               "b     L%=_repeat"
+               "\n\t"
+               "L%=_last_one:"
+               "\n\t"
+               "strb  %[bitmask], [%[reg], #0]"
+               "\n\t"
+               "movs  %[dly], #13"
+               "\n\t"
+               "L%=_last_delay_T1H:"
+               "\n\t"
+               "sub   %[dly], #1"
+               "\n\t"
+               "bne   L%=_last_delay_T1H"
+               "\n\t"
+               "strb  %[bitmask], [%[reg], #4]"
+               "\n\t"
+               "movs  %[dly], #1"
+               "\n\t"
+               "L%=_last_delay_T1L:"
+               "\n\t"
+               "sub   %[dly], #1"
+               "\n\t"
+               "bne   L%=_last_delay_T1L"
+               "\n\t"
+               "nop"
+               "\n\t"
+               "L%=_repeat:"
+               "\n\t"
+               "add   %[p], #1"
+               "\n\t"
+               "sub   %[num], #1"
+               "\n\t"
+               "bne   L%=_begin"
+               "\n\t"
+               "L%=_done:"
+               "\n\t"
+               : [p] "+r"(p), [pix] "=&r"(pix), [count] "=&r"(count),
+                 [dly] "=&r"(dly), [num] "+r"(num)
+               : [bitmask] "r"(bitmask), [reg] "r"(reg));
 #else
 #error "Sorry, only 48 MHz is supported, please set Tools > CPU Speed to 48 MHz"
 #endif // F_CPU == 48000000
 
-// Begin of support for nRF52 based boards  -------------------------
+  // Begin of support for nRF52 based boards  -------------------------
 
 #elif defined(NRF52) || defined(NRF52_SERIES)
 // [[[Begin of the Neopixel NRF52 EasyDMA implementation
@@ -1369,16 +1976,16 @@ void Adafruit_NeoPixel::show(void) {
 //#define MAGIC_T1H              12UL | (0x8000) // 0.75us
 
 // WS2812B (rev B) timing is 0.4 and 0.8 us
-#define MAGIC_T0H               6UL | (0x8000) // 0.375us
-#define MAGIC_T1H              13UL | (0x8000) // 0.8125us
+#define MAGIC_T0H 6UL | (0x8000) // 0.375us
+#define MAGIC_T1H 13UL | (0x8000) // 0.8125us
 
 // WS2811 (400 khz) timing is 0.5 and 1.2
-#define MAGIC_T0H_400KHz        8UL  | (0x8000) // 0.5us
-#define MAGIC_T1H_400KHz        19UL | (0x8000) // 1.1875us
+#define MAGIC_T0H_400KHz 8UL | (0x8000) // 0.5us
+#define MAGIC_T1H_400KHz 19UL | (0x8000) // 1.1875us
 
 // For 400Khz, we double value of CTOPVAL
-#define CTOPVAL                20UL            // 1.25us
-#define CTOPVAL_400KHz         40UL            // 2.5us
+#define CTOPVAL 20UL // 1.25us
+#define CTOPVAL_400KHz 40UL // 2.5us
 
 // ---------- END Constants for the EasyDMA implementation -------------
 //
@@ -1390,14 +1997,14 @@ void Adafruit_NeoPixel::show(void) {
 // The number of cycles was hand picked and is guaranteed to be 100%
 // organic to preserve freshness and high accuracy.
 // ---------- BEGIN Constants for cycle counter implementation ---------
-#define CYCLES_800_T0H  18  // ~0.36 uS
-#define CYCLES_800_T1H  41  // ~0.76 uS
-#define CYCLES_800      71  // ~1.25 uS
+#define CYCLES_800_T0H 18 // ~0.36 uS
+#define CYCLES_800_T1H 41 // ~0.76 uS
+#define CYCLES_800 71 // ~1.25 uS
 
-#define CYCLES_400_T0H  26  // ~0.50 uS
-#define CYCLES_400_T1H  70  // ~1.26 uS
-#define CYCLES_400      156 // ~2.50 uS
-// ---------- END of Constants for cycle counter implementation --------
+#define CYCLES_400_T0H 26 // ~0.50 uS
+#define CYCLES_400_T1H 70 // ~1.26 uS
+#define CYCLES_400 156 // ~2.50 uS
+  // ---------- END of Constants for cycle counter implementation --------
 
   // To support both the SoftDevice + Neopixels we use the EasyDMA
   // feature from the NRF25. However this technique implies to
@@ -1409,55 +2016,60 @@ void Adafruit_NeoPixel::show(void) {
   //
   // If there is not enough memory, we will fall back to cycle counter
   // using DWT
-  uint32_t  pattern_size   = numBytes*8*sizeof(uint16_t)+2*sizeof(uint16_t);
-  uint16_t* pixels_pattern = NULL;
+  uint32_t pattern_size =
+      numBytes * 8 * sizeof(uint16_t) + 2 * sizeof(uint16_t);
+  uint16_t *pixels_pattern = NULL;
 
-  NRF_PWM_Type* pwm = NULL;
+  NRF_PWM_Type *pwm = NULL;
 
   // Try to find a free PWM device, which is not enabled
   // and has no connected pins
-  NRF_PWM_Type* PWM[] = {
-    NRF_PWM0, NRF_PWM1, NRF_PWM2
+  NRF_PWM_Type *PWM[] = {
+    NRF_PWM0,
+    NRF_PWM1,
+    NRF_PWM2
 #if defined(NRF_PWM3)
-    ,NRF_PWM3
+    ,
+    NRF_PWM3
 #endif
   };
 
-  for(unsigned int device = 0; device < (sizeof(PWM)/sizeof(PWM[0])); device++) {
-    if( (PWM[device]->ENABLE == 0)                            &&
+  for (unsigned int device = 0; device < (sizeof(PWM) / sizeof(PWM[0]));
+       device++) {
+    if ((PWM[device]->ENABLE == 0) &&
         (PWM[device]->PSEL.OUT[0] & PWM_PSEL_OUT_CONNECT_Msk) &&
         (PWM[device]->PSEL.OUT[1] & PWM_PSEL_OUT_CONNECT_Msk) &&
         (PWM[device]->PSEL.OUT[2] & PWM_PSEL_OUT_CONNECT_Msk) &&
-        (PWM[device]->PSEL.OUT[3] & PWM_PSEL_OUT_CONNECT_Msk)
-    ) {
+        (PWM[device]->PSEL.OUT[3] & PWM_PSEL_OUT_CONNECT_Msk)) {
       pwm = PWM[device];
       break;
     }
   }
 
   // only malloc if there is PWM device available
-  if ( pwm != NULL ) {
-    #if defined(ARDUINO_NRF52_ADAFRUIT) // use thread-safe malloc
-      pixels_pattern = (uint16_t *) rtos_malloc(pattern_size);
-    #else
-      pixels_pattern = (uint16_t *) malloc(pattern_size);
-    #endif
+  if (pwm != NULL) {
+#if defined(ARDUINO_NRF52_ADAFRUIT) // use thread-safe malloc
+    pixels_pattern = (uint16_t *)rtos_malloc(pattern_size);
+#else
+    pixels_pattern = (uint16_t *)malloc(pattern_size);
+#endif
   }
 
   // Use the identified device to choose the implementation
   // If a PWM device is available use DMA
-  if( (pixels_pattern != NULL) && (pwm != NULL) ) {
+  if ((pixels_pattern != NULL) && (pwm != NULL)) {
     uint16_t pos = 0; // bit position
 
-    for(uint16_t n=0; n<numBytes; n++) {
+    for (uint16_t n = 0; n < numBytes; n++) {
       uint8_t pix = pixels[n];
 
-      for(uint8_t mask=0x80; mask>0; mask >>= 1) {
-        #if defined(NEO_KHZ400)
-        if( !is800KHz ) {
-          pixels_pattern[pos] = (pix & mask) ? MAGIC_T1H_400KHz : MAGIC_T0H_400KHz;
-        }else
-        #endif
+      for (uint8_t mask = 0x80; mask > 0; mask >>= 1) {
+#if defined(NEO_KHZ400)
+        if (!is800KHz) {
+          pixels_pattern[pos] =
+              (pix & mask) ? MAGIC_T1H_400KHz : MAGIC_T0H_400KHz;
+        } else
+#endif
         {
           pixels_pattern[pos] = (pix & mask) ? MAGIC_T1H : MAGIC_T0H;
         }
@@ -1474,15 +2086,16 @@ void Adafruit_NeoPixel::show(void) {
     pwm->MODE = (PWM_MODE_UPDOWN_Up << PWM_MODE_UPDOWN_Pos);
 
     // Set the PWM to use the 16MHz clock
-    pwm->PRESCALER = (PWM_PRESCALER_PRESCALER_DIV_1 << PWM_PRESCALER_PRESCALER_Pos);
+    pwm->PRESCALER =
+        (PWM_PRESCALER_PRESCALER_DIV_1 << PWM_PRESCALER_PRESCALER_Pos);
 
     // Setting of the maximum count
     // but keeping it on 16Mhz allows for more granularity just
     // in case someone wants to do more fine-tuning of the timing.
 #if defined(NEO_KHZ400)
-    if( !is800KHz ) {
+    if (!is800KHz) {
       pwm->COUNTERTOP = (CTOPVAL_400KHz << PWM_COUNTERTOP_COUNTERTOP_Pos);
-    }else
+    } else
 #endif
     {
       pwm->COUNTERTOP = (CTOPVAL << PWM_COUNTERTOP_COUNTERTOP_Pos);
@@ -1501,10 +2114,10 @@ void Adafruit_NeoPixel::show(void) {
     pwm->SEQ[0].PTR = (uint32_t)(pixels_pattern) << PWM_SEQ_PTR_PTR_Pos;
 
     // Calculation of the number of steps loaded from memory.
-    pwm->SEQ[0].CNT = (pattern_size/sizeof(uint16_t)) << PWM_SEQ_CNT_CNT_Pos;
+    pwm->SEQ[0].CNT = (pattern_size / sizeof(uint16_t)) << PWM_SEQ_CNT_CNT_Pos;
 
     // The following settings are ignored with the current config.
-    pwm->SEQ[0].REFRESH  = 0;
+    pwm->SEQ[0].REFRESH = 0;
     pwm->SEQ[0].ENDDELAY = 0;
 
     // The Neopixel implementation is a blocking algorithm. DMA
@@ -1512,29 +2125,28 @@ void Adafruit_NeoPixel::show(void) {
     // operation we enable the interruption for the end of sequence
     // and block the execution thread until the event flag is set by
     // the peripheral.
-//    pwm->INTEN |= (PWM_INTEN_SEQEND0_Enabled<<PWM_INTEN_SEQEND0_Pos);
+    //    pwm->INTEN |= (PWM_INTEN_SEQEND0_Enabled<<PWM_INTEN_SEQEND0_Pos);
 
-    // PSEL must be configured before enabling PWM
-    #if defined(ARDUINO_ARCH_NRF52840)
+// PSEL must be configured before enabling PWM
+#if defined(ARDUINO_ARCH_NRF52840)
     pwm->PSEL.OUT[0] = g_APinDescription[pin].name;
-    #else
+#else
     pwm->PSEL.OUT[0] = g_ADigitalPinMap[pin];
-    #endif
+#endif
 
     // Enable the PWM
     pwm->ENABLE = 1;
 
     // After all of this and many hours of reading the documentation
     // we are ready to start the sequence...
-    pwm->EVENTS_SEQEND[0]  = 0;
+    pwm->EVENTS_SEQEND[0] = 0;
     pwm->TASKS_SEQSTART[0] = 1;
 
     // But we have to wait for the flag to be set.
-    while(!pwm->EVENTS_SEQEND[0])
-    {
-      #if defined(ARDUINO_NRF52_ADAFRUIT) || defined(ARDUINO_ARCH_NRF52840)
+    while (!pwm->EVENTS_SEQEND[0]) {
+#if defined(ARDUINO_NRF52_ADAFRUIT) || defined(ARDUINO_ARCH_NRF52840)
       yield();
-      #endif
+#endif
     }
 
     // Before leave we clear the flag for the event.
@@ -1548,40 +2160,39 @@ void Adafruit_NeoPixel::show(void) {
 
     pwm->PSEL.OUT[0] = 0xFFFFFFFFUL;
 
-    #if defined(ARDUINO_NRF52_ADAFRUIT)  // use thread-safe free
-      rtos_free(pixels_pattern);
-    #else
-      free(pixels_pattern);
-    #endif
-  }// End of DMA implementation
+#if defined(ARDUINO_NRF52_ADAFRUIT) // use thread-safe free
+    rtos_free(pixels_pattern);
+#else
+    free(pixels_pattern);
+#endif
+  } // End of DMA implementation
   // ---------------------------------------------------------------------
-  else{
-#ifndef ARDUINO_ARCH_NRF52840     
-    // Fall back to DWT
-    #if defined(ARDUINO_NRF52_ADAFRUIT)
-      // Bluefruit Feather 52 uses freeRTOS
-      // Critical Section is used since it does not block SoftDevice execution
-      taskENTER_CRITICAL();
-    #elif defined(NRF52_DISABLE_INT)
-      // If you are using the Bluetooth SoftDevice we advise you to not disable
-      // the interrupts. Disabling the interrupts even for short periods of time
-      // causes the SoftDevice to stop working.
-      // Disable the interrupts only in cases where you need high performance for
-      // the LEDs and if you are not using the EasyDMA feature.
-      __disable_irq();
-    #endif
-
-    NRF_GPIO_Type* nrf_port = (NRF_GPIO_Type*) digitalPinToPort(pin);
+  else {
+#ifndef ARDUINO_ARCH_NRF52840
+// Fall back to DWT
+#if defined(ARDUINO_NRF52_ADAFRUIT)
+    // Bluefruit Feather 52 uses freeRTOS
+    // Critical Section is used since it does not block SoftDevice execution
+    taskENTER_CRITICAL();
+#elif defined(NRF52_DISABLE_INT)
+    // If you are using the Bluetooth SoftDevice we advise you to not disable
+    // the interrupts. Disabling the interrupts even for short periods of time
+    // causes the SoftDevice to stop working.
+    // Disable the interrupts only in cases where you need high performance for
+    // the LEDs and if you are not using the EasyDMA feature.
+    __disable_irq();
+#endif
+
+    NRF_GPIO_Type *nrf_port = (NRF_GPIO_Type *)digitalPinToPort(pin);
     uint32_t pinMask = digitalPinToBitMask(pin);
 
-    uint32_t CYCLES_X00     = CYCLES_800;
+    uint32_t CYCLES_X00 = CYCLES_800;
     uint32_t CYCLES_X00_T1H = CYCLES_800_T1H;
     uint32_t CYCLES_X00_T0H = CYCLES_800_T0H;
 
 #if defined(NEO_KHZ400)
-    if( !is800KHz )
-    {
-      CYCLES_X00     = CYCLES_400;
+    if (!is800KHz) {
+      CYCLES_X00 = CYCLES_400;
       CYCLES_X00_T1H = CYCLES_400_T1H;
       CYCLES_X00_T0H = CYCLES_400_T0H;
     }
@@ -1592,36 +2203,39 @@ void Adafruit_NeoPixel::show(void) {
     DWT->CTRL |= DWT_CTRL_CYCCNTENA_Msk;
 
     // Tries to re-send the frame if is interrupted by the SoftDevice.
-    while(1) {
+    while (1) {
       uint8_t *p = pixels;
 
       uint32_t cycStart = DWT->CYCCNT;
       uint32_t cyc = 0;
 
-      for(uint16_t n=0; n<numBytes; n++) {
+      for (uint16_t n = 0; n < numBytes; n++) {
         uint8_t pix = *p++;
 
-        for(uint8_t mask = 0x80; mask; mask >>= 1) {
-          while(DWT->CYCCNT - cyc < CYCLES_X00);
-          cyc  = DWT->CYCCNT;
+        for (uint8_t mask = 0x80; mask; mask >>= 1) {
+          while (DWT->CYCCNT - cyc < CYCLES_X00)
+            ;
+          cyc = DWT->CYCCNT;
 
           nrf_port->OUTSET |= pinMask;
 
-          if(pix & mask) {
-            while(DWT->CYCCNT - cyc < CYCLES_X00_T1H);
+          if (pix & mask) {
+            while (DWT->CYCCNT - cyc < CYCLES_X00_T1H)
+              ;
           } else {
-            while(DWT->CYCCNT - cyc < CYCLES_X00_T0H);
+            while (DWT->CYCCNT - cyc < CYCLES_X00_T0H)
+              ;
           }
 
           nrf_port->OUTCLR |= pinMask;
         }
       }
-      while(DWT->CYCCNT - cyc < CYCLES_X00);
-
+      while (DWT->CYCCNT - cyc < CYCLES_X00)
+        ;
 
       // If total time longer than 25%, resend the whole data.
       // Since we are likely to be interrupted by SoftDevice
-      if ( (DWT->CYCCNT - cycStart) < ( 8*numBytes*((CYCLES_X00*5)/4) ) ) {
+      if ((DWT->CYCCNT - cycStart) < (8 * numBytes * ((CYCLES_X00 * 5) / 4))) {
         break;
       }
 
@@ -1629,40 +2243,44 @@ void Adafruit_NeoPixel::show(void) {
       delayMicroseconds(300);
     }
 
-    // Enable interrupts again
-    #if defined(ARDUINO_NRF52_ADAFRUIT)
-      taskEXIT_CRITICAL();
-    #elif defined(NRF52_DISABLE_INT)
-      __enable_irq();
-    #endif
+// Enable interrupts again
+#if defined(ARDUINO_NRF52_ADAFRUIT)
+    taskEXIT_CRITICAL();
+#elif defined(NRF52_DISABLE_INT)
+    __enable_irq();
+#endif
 #endif
   }
-// END of NRF52 implementation
+  // END of NRF52 implementation
 
-#elif defined (__SAMD21E17A__) || defined(__SAMD21G18A__)  || defined(__SAMD21E18A__) || defined(__SAMD21J18A__) // Arduino Zero, Gemma/Trinket M0, SODAQ Autonomo and others
+#elif defined(__SAMD21E17A__) || defined(__SAMD21G18A__) || \
+      defined(__SAMD21E18A__) || defined(__SAMD21J18A__) || \
+      defined (__SAMD11C14A__)
+  // Arduino Zero, Gemma/Trinket M0, SODAQ Autonomo
+  // and others
   // Tried this with a timer/counter, couldn't quite get adequate
   // resolution. So yay, you get a load of goofball NOPs...
 
-  uint8_t  *ptr, *end, p, bitMask, portNum;
-  uint32_t  pinMask;
+  uint8_t *ptr, *end, p, bitMask, portNum;
+  uint32_t pinMask;
 
-  portNum =  g_APinDescription[pin].ulPort;
-  pinMask =  1ul << g_APinDescription[pin].ulPin;
-  ptr     =  pixels;
-  end     =  ptr + numBytes;
-  p       = *ptr++;
-  bitMask =  0x80;
+  portNum = g_APinDescription[pin].ulPort;
+  pinMask = 1ul << g_APinDescription[pin].ulPin;
+  ptr = pixels;
+  end = ptr + numBytes;
+  p = *ptr++;
+  bitMask = 0x80;
 
   volatile uint32_t *set = &(PORT->Group[portNum].OUTSET.reg),
                     *clr = &(PORT->Group[portNum].OUTCLR.reg);
 
 #if defined(NEO_KHZ400) // 800 KHz check needed only if 400 KHz support enabled
-  if(is800KHz) {
+  if (is800KHz) {
 #endif
-    for(;;) {
+    for (;;) {
       *set = pinMask;
       asm("nop; nop; nop; nop; nop; nop; nop; nop;");
-      if(p & bitMask) {
+      if (p & bitMask) {
         asm("nop; nop; nop; nop; nop; nop; nop; nop;"
             "nop; nop; nop; nop; nop; nop; nop; nop;"
             "nop; nop; nop; nop;");
@@ -1673,20 +2291,21 @@ void Adafruit_NeoPixel::show(void) {
             "nop; nop; nop; nop; nop; nop; nop; nop;"
             "nop; nop; nop; nop;");
       }
-      if(bitMask >>= 1) {
+      if (bitMask >>= 1) {
         asm("nop; nop; nop; nop; nop; nop; nop; nop; nop;");
       } else {
-        if(ptr >= end) break;
-        p       = *ptr++;
+        if (ptr >= end)
+          break;
+        p = *ptr++;
         bitMask = 0x80;
       }
     }
 #if defined(NEO_KHZ400)
   } else { // 400 KHz bitstream
-    for(;;) {
+    for (;;) {
       *set = pinMask;
       asm("nop; nop; nop; nop; nop; nop; nop; nop; nop; nop; nop;");
-      if(p & bitMask) {
+      if (p & bitMask) {
         asm("nop; nop; nop; nop; nop; nop; nop; nop;"
             "nop; nop; nop; nop; nop; nop; nop; nop;"
             "nop; nop; nop; nop; nop; nop; nop; nop;"
@@ -1703,29 +2322,195 @@ void Adafruit_NeoPixel::show(void) {
           "nop; nop; nop; nop; nop; nop; nop; nop;"
           "nop; nop; nop; nop; nop; nop; nop; nop;"
           "nop; nop; nop; nop; nop; nop; nop; nop;");
-      if(bitMask >>= 1) {
+      if (bitMask >>= 1) {
         asm("nop; nop; nop; nop; nop; nop; nop;");
       } else {
-        if(ptr >= end) break;
-        p       = *ptr++;
+        if (ptr >= end)
+          break;
+        p = *ptr++;
         bitMask = 0x80;
       }
     }
   }
 #endif
 
-#elif defined (__SAMD51__) // M4
+//----
+#elif defined(XMC1100_XMC2GO) || defined(XMC1100_H_BRIDGE2GO) || defined(XMC1100_Boot_Kit)  || defined(XMC1300_Boot_Kit)
+
+  // XMC1100/1200/1300 with ARM Cortex M0 are running with 32MHz, XMC1400 runs with 48MHz so may not work
+  // Tried this with a timer/counter, couldn't quite get adequate
+  // resolution.  So yay, you get a load of goofball NOPs...
 
-  uint8_t  *ptr, *end, p, bitMask, portNum, bit;
+  uint8_t  *ptr, *end, p, bitMask, portNum;
   uint32_t  pinMask;
 
-  portNum =  g_APinDescription[pin].ulPort;
-  pinMask =  1ul << g_APinDescription[pin].ulPin;
   ptr     =  pixels;
   end     =  ptr + numBytes;
   p       = *ptr++;
   bitMask =  0x80;
 
+  XMC_GPIO_PORT_t*  XMC_port = mapping_port_pin[ pin ].port;
+  uint8_t  XMC_pin           = mapping_port_pin[ pin ].pin;
+
+	uint32_t omrhigh = (uint32_t)XMC_GPIO_OUTPUT_LEVEL_HIGH << XMC_pin;
+	uint32_t omrlow  = (uint32_t)XMC_GPIO_OUTPUT_LEVEL_LOW << XMC_pin;
+
+#ifdef NEO_KHZ400 // 800 KHz check needed only if 400 KHz support enabled
+  if(is800KHz) {
+#endif
+    for(;;) {
+			XMC_port->OMR = omrhigh;
+      asm("nop; nop; nop; nop;");
+      if(p & bitMask) {
+        asm("nop; nop; nop; nop; nop; nop; nop; nop;"
+            "nop; nop;");
+			  XMC_port->OMR = omrlow;
+      } else {
+				XMC_port->OMR = omrlow;
+        asm("nop; nop; nop; nop; nop; nop; nop; nop;"
+            "nop; nop;");
+      }
+      if(bitMask >>= 1) {
+        asm("nop; nop; nop; nop; nop;");
+      } else {
+        if(ptr >= end) break;
+        p       = *ptr++;
+        bitMask = 0x80;
+      }
+    }
+#ifdef NEO_KHZ400 // untested code
+  } else { // 400 KHz bitstream
+    for(;;) {
+      XMC_port->OMR = omrhigh;
+      asm("nop; nop; nop; nop; nop;");
+      if(p & bitMask) {
+        asm("nop; nop; nop; nop; nop; nop; nop; nop;"
+            "nop; nop; nop; nop; nop;");
+        XMC_port->OMR = omrlow;
+      } else {
+        XMC_port->OMR = omrlow;
+        asm("nop; nop; nop; nop; nop; nop; nop; nop;"
+            "nop; nop; nop; nop; nop;");
+      }
+      asm("nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;");
+      if(bitMask >>= 1) {
+        asm("nop; nop; nop;");
+      } else {
+        if(ptr >= end) break;
+        p       = *ptr++;
+        bitMask = 0x80;
+      }
+    }
+  }
+
+#endif
+//----
+
+//----
+#elif defined(XMC4700_Relax_Kit) || defined(XMC4800_Relax_Kit)
+
+// XMC4700 and XMC4800 with ARM Cortex M4 are running with 144MHz
+// Tried this with a timer/counter, couldn't quite get adequate
+// resolution.  So yay, you get a load of goofball NOPs...
+
+uint8_t  *ptr, *end, p, bitMask, portNum;
+uint32_t  pinMask;
+
+ptr     =  pixels;
+end     =  ptr + numBytes;
+p       = *ptr++;
+bitMask =  0x80;
+
+XMC_GPIO_PORT_t*   XMC_port = mapping_port_pin[ pin ].port;
+uint8_t            XMC_pin  = mapping_port_pin[ pin ].pin;
+
+uint32_t omrhigh = (uint32_t)XMC_GPIO_OUTPUT_LEVEL_HIGH << XMC_pin;
+uint32_t omrlow  = (uint32_t)XMC_GPIO_OUTPUT_LEVEL_LOW << XMC_pin;
+
+#ifdef NEO_KHZ400 // 800 KHz check needed only if 400 KHz support enabled
+if(is800KHz) {
+#endif
+
+  for(;;) {
+    XMC_port->OMR = omrhigh;
+    asm("nop; nop; nop; nop; nop; nop; nop; nop;"
+        "nop; nop; nop; nop; nop; nop; nop; nop;"
+        "nop; nop; nop; nop; nop; nop; nop; nop;"
+        "nop; nop; nop; nop; nop; nop; nop; nop;"
+        "nop; nop; nop; nop; nop; nop; nop; nop;"
+        "nop; nop; nop; nop; nop; nop; nop; nop;"
+        "nop; nop; nop; nop;");
+    if(p & bitMask) {
+      asm("nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;");
+      XMC_port->OMR = omrlow;
+    } else {
+      XMC_port->OMR = omrlow;
+      asm("nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;");
+    }
+    if(bitMask >>= 1) {
+      asm("nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;"
+          "nop; nop; nop; nop; nop; nop; nop; nop;");
+    } else {
+      if(ptr >= end) break;
+      p       = *ptr++;
+      bitMask = 0x80;
+    }
+  }
+
+
+#ifdef NEO_KHZ400
+  } else { // 400 KHz bitstream
+    // ToDo!
+  }
+#endif
+//----
+
+#elif defined(__SAMD51__) // M4
+
+  uint8_t *ptr, *end, p, bitMask, portNum, bit;
+  uint32_t pinMask;
+
+  portNum = g_APinDescription[pin].ulPort;
+  pinMask = 1ul << g_APinDescription[pin].ulPin;
+  ptr = pixels;
+  end = ptr + numBytes;
+  p = *ptr++;
+  bitMask = 0x80;
+
   volatile uint32_t *set = &(PORT->Group[portNum].OUTSET.reg),
                     *clr = &(PORT->Group[portNum].OUTCLR.reg);
 
@@ -1745,65 +2530,67 @@ void Adafruit_NeoPixel::show(void) {
   // seems to work just well enough.  When finished, the SysTick
   // peripheral is set back to its original state.
 
-  uint32_t t0, t1, top, ticks,
-           saveLoad = SysTick->LOAD, saveVal = SysTick->VAL;
+  uint32_t t0, t1, top, ticks, saveLoad = SysTick->LOAD, saveVal = SysTick->VAL;
 
 #if defined(NEO_KHZ400) // 800 KHz check needed only if 400 KHz support enabled
-  if(is800KHz) {
+  if (is800KHz) {
 #endif
-    top =       (uint32_t)(F_CPU * 0.00000125); // Bit hi + lo = 1.25 uS
-    t0  = top - (uint32_t)(F_CPU * 0.00000040); // 0 = 0.4 uS hi
-    t1  = top - (uint32_t)(F_CPU * 0.00000080); // 1 = 0.8 uS hi
+    top = (uint32_t)(F_CPU * 0.00000125);      // Bit hi + lo = 1.25 uS
+    t0 = top - (uint32_t)(F_CPU * 0.00000040); // 0 = 0.4 uS hi
+    t1 = top - (uint32_t)(F_CPU * 0.00000080); // 1 = 0.8 uS hi
 #if defined(NEO_KHZ400)
-  } else { // 400 KHz bitstream
-    top =       (uint32_t)(F_CPU * 0.00000250); // Bit hi + lo = 2.5 uS
-    t0  = top - (uint32_t)(F_CPU * 0.00000050); // 0 = 0.5 uS hi
-    t1  = top - (uint32_t)(F_CPU * 0.00000120); // 1 = 1.2 uS hi
+  } else {                                     // 400 KHz bitstream
+    top = (uint32_t)(F_CPU * 0.00000250);      // Bit hi + lo = 2.5 uS
+    t0 = top - (uint32_t)(F_CPU * 0.00000050); // 0 = 0.5 uS hi
+    t1 = top - (uint32_t)(F_CPU * 0.00000120); // 1 = 1.2 uS hi
   }
 #endif
 
-  SysTick->LOAD = top;               // Config SysTick for NeoPixel bit freq
-  SysTick->VAL  = top;               // Set to start value (counts down)
-  (void)SysTick->VAL;                // Dummy read helps sync up 1st bit
+  SysTick->LOAD = top; // Config SysTick for NeoPixel bit freq
+  SysTick->VAL = top;  // Set to start value (counts down)
+  (void)SysTick->VAL;  // Dummy read helps sync up 1st bit
 
-  for(;;) {
-    *set  = pinMask;                 // Set output high
+  for (;;) {
+    *set = pinMask;                  // Set output high
     ticks = (p & bitMask) ? t1 : t0; // SysTick threshold,
-    while(SysTick->VAL > ticks);     // wait for it
-    *clr  = pinMask;                 // Set output low
-    if(!(bitMask >>= 1)) {           // Next bit for this byte...done?
-      if(ptr >= end) break;          // If last byte sent, exit loop
-      p       = *ptr++;              // Fetch next byte
-      bitMask = 0x80;                // Reset bitmask
+    while (SysTick->VAL > ticks)
+      ;                     // wait for it
+    *clr = pinMask;         // Set output low
+    if (!(bitMask >>= 1)) { // Next bit for this byte...done?
+      if (ptr >= end)
+        break;        // If last byte sent, exit loop
+      p = *ptr++;     // Fetch next byte
+      bitMask = 0x80; // Reset bitmask
     }
-    while(SysTick->VAL <= ticks);    // Wait for rollover to 'top'
+    while (SysTick->VAL <= ticks)
+      ; // Wait for rollover to 'top'
   }
 
-  SysTick->LOAD = saveLoad;          // Restore SysTick rollover to 1 ms
-  SysTick->VAL  = saveVal;           // Restore SysTick value
+  SysTick->LOAD = saveLoad; // Restore SysTick rollover to 1 ms
+  SysTick->VAL = saveVal;   // Restore SysTick value
 
-#elif defined (ARDUINO_STM32_FEATHER) // FEATHER WICED (120MHz)
+#elif defined(ARDUINO_STM32_FEATHER) // FEATHER WICED (120MHz)
 
   // Tried this with a timer/counter, couldn't quite get adequate
   // resolution. So yay, you get a load of goofball NOPs...
 
-  uint8_t  *ptr, *end, p, bitMask;
-  uint32_t  pinMask;
+  uint8_t *ptr, *end, p, bitMask;
+  uint32_t pinMask;
 
-  pinMask =  BIT(PIN_MAP[pin].gpio_bit);
-  ptr     =  pixels;
-  end     =  ptr + numBytes;
-  p       = *ptr++;
-  bitMask =  0x80;
+  pinMask = BIT(PIN_MAP[pin].gpio_bit);
+  ptr = pixels;
+  end = ptr + numBytes;
+  p = *ptr++;
+  bitMask = 0x80;
 
   volatile uint16_t *set = &(PIN_MAP[pin].gpio_device->regs->BSRRL);
   volatile uint16_t *clr = &(PIN_MAP[pin].gpio_device->regs->BSRRH);
 
 #if defined(NEO_KHZ400) // 800 KHz check needed only if 400 KHz support enabled
-  if(is800KHz) {
+  if (is800KHz) {
 #endif
-    for(;;) {
-      if(p & bitMask) { // ONE
+    for (;;) {
+      if (p & bitMask) { // ONE
         // High 800ns
         *set = pinMask;
         asm("nop; nop; nop; nop; nop; nop; nop; nop;"
@@ -1849,12 +2636,13 @@ void Adafruit_NeoPixel::show(void) {
             "nop; nop; nop; nop; nop; nop; nop; nop;"
             "nop; nop; nop; nop;");
       }
-      if(bitMask >>= 1) {
+      if (bitMask >>= 1) {
         // Move on to the next pixel
         asm("nop;");
       } else {
-        if(ptr >= end) break;
-        p       = *ptr++;
+        if (ptr >= end)
+          break;
+        p = *ptr++;
         bitMask = 0x80;
       }
     }
@@ -1865,17 +2653,17 @@ void Adafruit_NeoPixel::show(void) {
 #endif
 
 #elif defined(TARGET_LPC1768)
-  uint8_t  *ptr, *end, p, bitMask;
-  ptr     =  pixels;
-  end     =  ptr + numBytes;
-  p       = *ptr++;
-  bitMask =  0x80;
+  uint8_t *ptr, *end, p, bitMask;
+  ptr = pixels;
+  end = ptr + numBytes;
+  p = *ptr++;
+  bitMask = 0x80;
 
 #if defined(NEO_KHZ400) // 800 KHz check needed only if 400 KHz support enabled
-  if(is800KHz) {
+  if (is800KHz) {
 #endif
-    for(;;) {
-      if(p & bitMask) {
+    for (;;) {
+      if (p & bitMask) {
         // data ONE high
         // min: 550 typ: 700 max: 5,500
         gpio_set(pin);
@@ -1893,12 +2681,13 @@ void Adafruit_NeoPixel::show(void) {
         gpio_clear(pin);
         time::delay_ns(450);
       }
-      if(bitMask >>= 1) {
+      if (bitMask >>= 1) {
         // Move on to the next pixel
         asm("nop;");
       } else {
-        if(ptr >= end) break;
-        p       = *ptr++;
+        if (ptr >= end)
+          break;
+        p = *ptr++;
         bitMask = 0x80;
       }
     }
@@ -1908,204 +2697,229 @@ void Adafruit_NeoPixel::show(void) {
   }
 #endif
 #elif defined(ARDUINO_ARCH_STM32) || defined(ARDUINO_ARCH_ARDUINO_CORE_STM32)
-  uint8_t           *p   = pixels, *end = p + numBytes,
-                    pix = *p++, mask = 0x80;
-  uint32_t          cyc;
+  uint8_t *p = pixels, *end = p + numBytes, pix = *p++, mask = 0x80;
+  uint32_t cyc;
   uint32_t saveLoad = SysTick->LOAD, saveVal = SysTick->VAL;
 #if defined(NEO_KHZ400) // 800 KHz check needed only if 400 KHz support enabled
-  if(is800KHz) {
+  if (is800KHz) {
 #endif
-    uint32_t top = (F_CPU /  800000);       // 1.25µs
-    uint32_t t0  = top - (F_CPU / 2500000); // 0.4µs
-    uint32_t t1  = top - (F_CPU / 1250000); // 0.8µs
+    uint32_t top = (F_CPU / 800000);       // 1.25µs
+    uint32_t t0 = top - (F_CPU / 2500000); // 0.4µs
+    uint32_t t1 = top - (F_CPU / 1250000); // 0.8µs
     SysTick->LOAD = top - 1; // Config SysTick for NeoPixel bit freq
-    SysTick->VAL  = 0; // Set to start value
-    for(;;) {
+    SysTick->VAL = 0;        // Set to start value
+    for (;;) {
       LL_GPIO_SetOutputPin(gpioPort, gpioPin);
       cyc = (pix & mask) ? t1 : t0;
-      while(SysTick->VAL > cyc);
+      while (SysTick->VAL > cyc)
+        ;
       LL_GPIO_ResetOutputPin(gpioPort, gpioPin);
-      if(!(mask >>= 1)) {
-        if(p >= end) break;
-        pix       = *p++;
+      if (!(mask >>= 1)) {
+        if (p >= end)
+          break;
+        pix = *p++;
         mask = 0x80;
       }
-      while(SysTick->VAL <= cyc);
+      while (SysTick->VAL <= cyc)
+        ;
     }
 #if defined(NEO_KHZ400)
-  } else { // 400 kHz bitstream
-    uint32_t top = (F_CPU /  400000);       // 2.5µs
-    uint32_t t0  = top - (F_CPU / 2000000); // 0.5µs
-    uint32_t t1  = top - (F_CPU /  833333); // 1.2µs
+  } else {                                 // 400 kHz bitstream
+    uint32_t top = (F_CPU / 400000);       // 2.5µs
+    uint32_t t0 = top - (F_CPU / 2000000); // 0.5µs
+    uint32_t t1 = top - (F_CPU / 833333);  // 1.2µs
     SysTick->LOAD = top - 1; // Config SysTick for NeoPixel bit freq
-    SysTick->VAL  = 0;       // Set to start value
-    for(;;) {
+    SysTick->VAL = 0;        // Set to start value
+    for (;;) {
       LL_GPIO_SetOutputPin(gpioPort, gpioPin);
       cyc = (pix & mask) ? t1 : t0;
-      while(SysTick->VAL > cyc);
+      while (SysTick->VAL > cyc)
+        ;
       LL_GPIO_ResetOutputPin(gpioPort, gpioPin);
-      if(!(mask >>= 1)) {
-        if(p >= end) break;
-        pix       = *p++;
+      if (!(mask >>= 1)) {
+        if (p >= end)
+          break;
+        pix = *p++;
         mask = 0x80;
       }
-      while(SysTick->VAL <= cyc);
+      while (SysTick->VAL <= cyc)
+        ;
     }
   }
 #endif // NEO_KHZ400
-  SysTick->LOAD = saveLoad;          // Restore SysTick rollover to 1 ms
-  SysTick->VAL  = saveVal;           // Restore SysTick value
-#elif defined (NRF51)
-  uint8_t          *p   = pixels,
-                    pix, count, mask;
-  int32_t         num = numBytes;
-  unsigned int bitmask = ( 1 << g_ADigitalPinMap[pin] );
-// https://github.com/sandeepmistry/arduino-nRF5/blob/dc53980c8bac27898fca90d8ecb268e11111edc1/variants/BBCmicrobit/variant.cpp
+  SysTick->LOAD = saveLoad; // Restore SysTick rollover to 1 ms
+  SysTick->VAL = saveVal;   // Restore SysTick value
+#elif defined(NRF51)
+  uint8_t *p = pixels, pix, count, mask;
+  int32_t num = numBytes;
+  unsigned int bitmask = (1 << g_ADigitalPinMap[pin]);
+  // https://github.com/sandeepmistry/arduino-nRF5/blob/dc53980c8bac27898fca90d8ecb268e11111edc1/variants/BBCmicrobit/variant.cpp
 
-  volatile unsigned int *reg = (unsigned int *) (0x50000000UL + 0x508);
+  volatile unsigned int *reg = (unsigned int *)(0x50000000UL + 0x508);
 
-// https://github.com/sandeepmistry/arduino-nRF5/blob/dc53980c8bac27898fca90d8ecb268e11111edc1/cores/nRF5/SDK/components/device/nrf51.h
-// http://www.iot-programmer.com/index.php/books/27-micro-bit-iot-in-c/chapters-micro-bit-iot-in-c/47-micro-bit-iot-in-c-fast-memory-mapped-gpio?showall=1
-// https://github.com/Microsoft/pxt-neopixel/blob/master/sendbuffer.asm
+  // https://github.com/sandeepmistry/arduino-nRF5/blob/dc53980c8bac27898fca90d8ecb268e11111edc1/cores/nRF5/SDK/components/device/nrf51.h
+  // http://www.iot-programmer.com/index.php/books/27-micro-bit-iot-in-c/chapters-micro-bit-iot-in-c/47-micro-bit-iot-in-c-fast-memory-mapped-gpio?showall=1
+  // https://github.com/Microsoft/pxt-neopixel/blob/master/sendbuffer.asm
 
   asm volatile(
-    // "cpsid i" ; disable irq
-
-    //    b .start
-    "b  L%=_start"                    "\n\t"
-    // .nextbit:               ;            C0
-    "L%=_nextbit:"                    "\n\t"          //;            C0
-    //    str r1, [r3, #0]    ; pin := hi  C2
-    "strb %[bitmask], [%[reg], #0]"   "\n\t"          //; pin := hi  C2
-    //    tst r6, r0          ;            C3
-    "tst %[mask], %[pix]"             "\n\t"//          ;            C3
-    //    bne .islate         ;            C4
-    "bne L%=_islate"                  "\n\t"          //;            C4
-    //    str r1, [r2, #0]    ; pin := lo  C6
-    "strb %[bitmask], [%[reg], #4]"   "\n\t"          //; pin := lo  C6
-    // .islate:
-    "L%=_islate:"                     "\n\t"
-    //    lsrs r6, r6, #1     ; r6 >>= 1   C7
-    "lsr %[mask], %[mask], #1"       "\n\t"          //; r6 >>= 1   C7
-    //    bne .justbit        ;            C8
-    "bne L%=_justbit"                 "\n\t"          //;            C8
-
-    //    ; not just a bit - need new byte
-    //    adds r4, #1         ; r4++       C9
-    "add %[p], #1"                   "\n\t"          //; r4++       C9
-    //    subs r5, #1         ; r5--       C10
-    "sub %[num], #1"                 "\n\t"          //; r5--       C10
-    //    bcc .stop           ; if (r5<0) goto .stop  C11
-    "bcc L%=_stop"                    "\n\t"          //; if (r5<0) goto .stop  C11
-    // .start:
-    "L%=_start:"
-    //    movs r6, #0x80      ; reset mask C12
-    "movs %[mask], #0x80"             "\n\t"          //; reset mask C12
-    //    nop                 ;            C13
-    "nop"                             "\n\t"          //;            C13
-
-    // .common:               ;             C13
-    "L%=_common:"                     "\n\t"          //;            C13
-    //    str r1, [r2, #0]   ; pin := lo   C15
-    "strb %[bitmask], [%[reg], #4]"   "\n\t"          //; pin := lo  C15
-    //    ; always re-load byte - it just fits with the cycles better this way
-    //    ldrb r0, [r4, #0]  ; r0 := *r4   C17
-    "ldrb  %[pix], [%[p], #0]"        "\n\t"          //; r0 := *r4   C17
-    //    b .nextbit         ;             C20
-    "b L%=_nextbit"                   "\n\t"          //;             C20
-
-    // .justbit: ; C10
-    "L%=_justbit:"                    "\n\t"          //; C10
-    //    ; no nops, branch taken is already 3 cycles
-    //    b .common ; C13
-    "b L%=_common"                    "\n\t"          //; C13
-
-    // .stop:
-    "L%=_stop:"                       "\n\t"
-    //    str r1, [r2, #0]   ; pin := lo
-    "strb %[bitmask], [%[reg], #4]"   "\n\t"          //; pin := lo
-    //    cpsie i            ; enable irq
-
-    : [p] "+r" (p),
-    [pix] "=&r" (pix),
-    [count] "=&r" (count),
-    [mask] "=&r" (mask),
-    [num] "+r" (num)
-    : [bitmask] "r" (bitmask),
-    [reg] "r" (reg)
-  );
+      // "cpsid i" ; disable irq
+
+      //    b .start
+      "b  L%=_start"
+      "\n\t"
+      // .nextbit:               ;            C0
+      "L%=_nextbit:"
+      "\n\t" //;            C0
+      //    str r1, [r3, #0]    ; pin := hi  C2
+      "strb %[bitmask], [%[reg], #0]"
+      "\n\t" //; pin := hi  C2
+      //    tst r6, r0          ;            C3
+      "tst %[mask], %[pix]"
+      "\n\t" //          ;            C3
+      //    bne .islate         ;            C4
+      "bne L%=_islate"
+      "\n\t" //;            C4
+      //    str r1, [r2, #0]    ; pin := lo  C6
+      "strb %[bitmask], [%[reg], #4]"
+      "\n\t" //; pin := lo  C6
+      // .islate:
+      "L%=_islate:"
+      "\n\t"
+      //    lsrs r6, r6, #1     ; r6 >>= 1   C7
+      "lsr %[mask], %[mask], #1"
+      "\n\t" //; r6 >>= 1   C7
+      //    bne .justbit        ;            C8
+      "bne L%=_justbit"
+      "\n\t" //;            C8
+
+      //    ; not just a bit - need new byte
+      //    adds r4, #1         ; r4++       C9
+      "add %[p], #1"
+      "\n\t" //; r4++       C9
+      //    subs r5, #1         ; r5--       C10
+      "sub %[num], #1"
+      "\n\t" //; r5--       C10
+      //    bcc .stop           ; if (r5<0) goto .stop  C11
+      "bcc L%=_stop"
+      "\n\t" //; if (r5<0) goto .stop  C11
+      // .start:
+      "L%=_start:"
+      //    movs r6, #0x80      ; reset mask C12
+      "movs %[mask], #0x80"
+      "\n\t" //; reset mask C12
+      //    nop                 ;            C13
+      "nop"
+      "\n\t" //;            C13
+
+      // .common:               ;             C13
+      "L%=_common:"
+      "\n\t" //;            C13
+      //    str r1, [r2, #0]   ; pin := lo   C15
+      "strb %[bitmask], [%[reg], #4]"
+      "\n\t" //; pin := lo  C15
+      //    ; always re-load byte - it just fits with the cycles better this way
+      //    ldrb r0, [r4, #0]  ; r0 := *r4   C17
+      "ldrb  %[pix], [%[p], #0]"
+      "\n\t" //; r0 := *r4   C17
+      //    b .nextbit         ;             C20
+      "b L%=_nextbit"
+      "\n\t" //;             C20
+
+      // .justbit: ; C10
+      "L%=_justbit:"
+      "\n\t" //; C10
+      //    ; no nops, branch taken is already 3 cycles
+      //    b .common ; C13
+      "b L%=_common"
+      "\n\t" //; C13
+
+      // .stop:
+      "L%=_stop:"
+      "\n\t"
+      //    str r1, [r2, #0]   ; pin := lo
+      "strb %[bitmask], [%[reg], #4]"
+      "\n\t" //; pin := lo
+      //    cpsie i            ; enable irq
+
+      : [p] "+r"(p), [pix] "=&r"(pix), [count] "=&r"(count), [mask] "=&r"(mask),
+        [num] "+r"(num)
+      : [bitmask] "r"(bitmask), [reg] "r"(reg));
 
 #elif defined(__SAM3X8E__) // Arduino Due
 
-  #define SCALE      VARIANT_MCK / 2UL / 1000000UL
-  #define INST       (2UL * F_CPU / VARIANT_MCK)
-  #define TIME_800_0 ((int)(0.40 * SCALE + 0.5) - (5 * INST))
-  #define TIME_800_1 ((int)(0.80 * SCALE + 0.5) - (5 * INST))
-  #define PERIOD_800 ((int)(1.25 * SCALE + 0.5) - (5 * INST))
-  #define TIME_400_0 ((int)(0.50 * SCALE + 0.5) - (5 * INST))
-  #define TIME_400_1 ((int)(1.20 * SCALE + 0.5) - (5 * INST))
-  #define PERIOD_400 ((int)(2.50 * SCALE + 0.5) - (5 * INST))
-
-  int             pinMask, time0, time1, period, t;
-  Pio            *port;
+#define SCALE VARIANT_MCK / 2UL / 1000000UL
+#define INST (2UL * F_CPU / VARIANT_MCK)
+#define TIME_800_0 ((int)(0.40 * SCALE + 0.5) - (5 * INST))
+#define TIME_800_1 ((int)(0.80 * SCALE + 0.5) - (5 * INST))
+#define PERIOD_800 ((int)(1.25 * SCALE + 0.5) - (5 * INST))
+#define TIME_400_0 ((int)(0.50 * SCALE + 0.5) - (5 * INST))
+#define TIME_400_1 ((int)(1.20 * SCALE + 0.5) - (5 * INST))
+#define PERIOD_400 ((int)(2.50 * SCALE + 0.5) - (5 * INST))
+
+  int pinMask, time0, time1, period, t;
+  Pio *port;
   volatile WoReg *portSet, *portClear, *timeValue, *timeReset;
-  uint8_t        *p, *end, pix, mask;
+  uint8_t *p, *end, pix, mask;
 
   pmc_set_writeprotect(false);
   pmc_enable_periph_clk((uint32_t)TC3_IRQn);
   TC_Configure(TC1, 0,
-    TC_CMR_WAVE | TC_CMR_WAVSEL_UP | TC_CMR_TCCLKS_TIMER_CLOCK1);
+               TC_CMR_WAVE | TC_CMR_WAVSEL_UP | TC_CMR_TCCLKS_TIMER_CLOCK1);
   TC_Start(TC1, 0);
 
-  pinMask   = g_APinDescription[pin].ulPin; // Don't 'optimize' these into
-  port      = g_APinDescription[pin].pPort; // declarations above. Want to
-  portSet   = &(port->PIO_SODR);            // burn a few cycles after
-  portClear = &(port->PIO_CODR);            // starting timer to minimize
-  timeValue = &(TC1->TC_CHANNEL[0].TC_CV);  // the initial 'while'.
+  pinMask = g_APinDescription[pin].ulPin;  // Don't 'optimize' these into
+  port = g_APinDescription[pin].pPort;     // declarations above. Want to
+  portSet = &(port->PIO_SODR);             // burn a few cycles after
+  portClear = &(port->PIO_CODR);           // starting timer to minimize
+  timeValue = &(TC1->TC_CHANNEL[0].TC_CV); // the initial 'while'.
   timeReset = &(TC1->TC_CHANNEL[0].TC_CCR);
-  p         =  pixels;
-  end       =  p + numBytes;
-  pix       = *p++;
-  mask      = 0x80;
+  p = pixels;
+  end = p + numBytes;
+  pix = *p++;
+  mask = 0x80;
 
 #if defined(NEO_KHZ400) // 800 KHz check needed only if 400 KHz support enabled
-  if(is800KHz) {
+  if (is800KHz) {
 #endif
-    time0  = TIME_800_0;
-    time1  = TIME_800_1;
+    time0 = TIME_800_0;
+    time1 = TIME_800_1;
     period = PERIOD_800;
 #if defined(NEO_KHZ400)
   } else { // 400 KHz bitstream
-    time0  = TIME_400_0;
-    time1  = TIME_400_1;
+    time0 = TIME_400_0;
+    time1 = TIME_400_1;
     period = PERIOD_400;
   }
 #endif
 
-  for(t = time0;; t = time0) {
-    if(pix & mask) t = time1;
-    while(*timeValue < (unsigned)period);
-    *portSet   = pinMask;
+  for (t = time0;; t = time0) {
+    if (pix & mask)
+      t = time1;
+    while (*timeValue < (unsigned)period)
+      ;
+    *portSet = pinMask;
     *timeReset = TC_CCR_CLKEN | TC_CCR_SWTRG;
-    while(*timeValue < (unsigned)t);
+    while (*timeValue < (unsigned)t)
+      ;
     *portClear = pinMask;
-    if(!(mask >>= 1)) {   // This 'inside-out' loop logic utilizes
-      if(p >= end) break; // idle time to minimize inter-byte delays.
+    if (!(mask >>= 1)) { // This 'inside-out' loop logic utilizes
+      if (p >= end)
+        break; // idle time to minimize inter-byte delays.
       pix = *p++;
       mask = 0x80;
     }
   }
-  while(*timeValue < (unsigned)period); // Wait for last bit
+  while (*timeValue < (unsigned)period)
+    ; // Wait for last bit
   TC_Stop(TC1, 0);
 
 #endif // end Due
 
-// END ARM ----------------------------------------------------------------
-
+  // END ARM ----------------------------------------------------------------
 
 #elif defined(ESP8266) || defined(ESP32)
 
-// ESP8266 ----------------------------------------------------------------
+  // ESP8266 ----------------------------------------------------------------
 
   // ESP8266 show() is external to enforce ICACHE_RAM_ATTR execution
   espShow(pin, pixels, numBytes, is800KHz);
@@ -2113,94 +2927,97 @@ void Adafruit_NeoPixel::show(void) {
 #elif defined(KENDRYTE_K210)
 
   k210Show(pin, pixels, numBytes, is800KHz);
-  
-#elif defined(__ARDUINO_ARC__)
 
-// Arduino 101  -----------------------------------------------------------
+#elif defined(__ARDUINO_ARC__)
 
-#define NOPx7 { __builtin_arc_nop(); \
-  __builtin_arc_nop(); __builtin_arc_nop(); \
-  __builtin_arc_nop(); __builtin_arc_nop(); \
-  __builtin_arc_nop(); __builtin_arc_nop(); }
+    // Arduino 101  -----------------------------------------------------------
+
+#define NOPx7                                                                  \
+  {                                                                            \
+    __builtin_arc_nop();                                                       \
+    __builtin_arc_nop();                                                       \
+    __builtin_arc_nop();                                                       \
+    __builtin_arc_nop();                                                       \
+    __builtin_arc_nop();                                                       \
+    __builtin_arc_nop();                                                       \
+    __builtin_arc_nop();                                                       \
+  }
 
   PinDescription *pindesc = &g_APinDescription[pin];
-  register uint32_t loop = 8 * numBytes; // one loop to handle all bytes and all bits
+  register uint32_t loop =
+      8 * numBytes; // one loop to handle all bytes and all bits
   register uint8_t *p = pixels;
-  register uint32_t currByte = (uint32_t) (*p);
+  register uint32_t currByte = (uint32_t)(*p);
   register uint32_t currBit = 0x80 & currByte;
   register uint32_t bitCounter = 0;
   register uint32_t first = 1;
 
-  // The loop is unusual. Very first iteration puts all the way LOW to the wire -
-  // constant LOW does not affect NEOPIXEL, so there is no visible effect displayed.
-  // During that very first iteration CPU caches instructions in the loop.
-  // Because of the caching process, "CPU slows down". NEOPIXEL pulse is very time sensitive
-  // that's why we let the CPU cache first and we start regular pulse from 2nd iteration
+  // The loop is unusual. Very first iteration puts all the way LOW to the wire
+  // - constant LOW does not affect NEOPIXEL, so there is no visible effect
+  // displayed. During that very first iteration CPU caches instructions in the
+  // loop. Because of the caching process, "CPU slows down". NEOPIXEL pulse is
+  // very time sensitive that's why we let the CPU cache first and we start
+  // regular pulse from 2nd iteration
   if (pindesc->ulGPIOType == SS_GPIO) {
     register uint32_t reg = pindesc->ulGPIOBase + SS_GPIO_SWPORTA_DR;
     uint32_t reg_val = __builtin_arc_lr((volatile uint32_t)reg);
     register uint32_t reg_bit_high = reg_val | (1 << pindesc->ulGPIOId);
-    register uint32_t reg_bit_low  = reg_val & ~(1 << pindesc->ulGPIOId);
+    register uint32_t reg_bit_low = reg_val & ~(1 << pindesc->ulGPIOId);
 
     loop += 1; // include first, special iteration
-    while(loop--) {
-      if(!first) {
+    while (loop--) {
+      if (!first) {
         currByte <<= 1;
         bitCounter++;
       }
 
       // 1 is >550ns high and >450ns low; 0 is 200..500ns high and >450ns low
-      __builtin_arc_sr(first ? reg_bit_low : reg_bit_high, (volatile uint32_t)reg);
-      if(currBit) { // ~400ns HIGH (740ns overall)
-        NOPx7
-        NOPx7
+      __builtin_arc_sr(first ? reg_bit_low : reg_bit_high,
+                       (volatile uint32_t)reg);
+      if (currBit) { // ~400ns HIGH (740ns overall)
+        NOPx7 NOPx7
       }
       // ~340ns HIGH
-      NOPx7
-     __builtin_arc_nop();
+      NOPx7 __builtin_arc_nop();
 
       // 820ns LOW; per spec, max allowed low here is 5000ns */
       __builtin_arc_sr(reg_bit_low, (volatile uint32_t)reg);
-      NOPx7
-      NOPx7
+      NOPx7 NOPx7
 
-      if(bitCounter >= 8) {
+          if (bitCounter >= 8) {
         bitCounter = 0;
-        currByte = (uint32_t) (*++p);
+        currByte = (uint32_t)(*++p);
       }
 
       currBit = 0x80 & currByte;
       first = 0;
     }
-  } else if(pindesc->ulGPIOType == SOC_GPIO) {
+  } else if (pindesc->ulGPIOType == SOC_GPIO) {
     register uint32_t reg = pindesc->ulGPIOBase + SOC_GPIO_SWPORTA_DR;
     uint32_t reg_val = MMIO_REG_VAL(reg);
     register uint32_t reg_bit_high = reg_val | (1 << pindesc->ulGPIOId);
-    register uint32_t reg_bit_low  = reg_val & ~(1 << pindesc->ulGPIOId);
+    register uint32_t reg_bit_low = reg_val & ~(1 << pindesc->ulGPIOId);
 
     loop += 1; // include first, special iteration
-    while(loop--) {
-      if(!first) {
+    while (loop--) {
+      if (!first) {
         currByte <<= 1;
         bitCounter++;
       }
       MMIO_REG_VAL(reg) = first ? reg_bit_low : reg_bit_high;
-      if(currBit) { // ~430ns HIGH (740ns overall)
-        NOPx7
-        NOPx7
-        __builtin_arc_nop();
+      if (currBit) { // ~430ns HIGH (740ns overall)
+        NOPx7 NOPx7 __builtin_arc_nop();
       }
       // ~310ns HIGH
       NOPx7
 
-      // 850ns LOW; per spec, max allowed low here is 5000ns */
-      MMIO_REG_VAL(reg) = reg_bit_low;
-      NOPx7
-      NOPx7
+          // 850ns LOW; per spec, max allowed low here is 5000ns */
+          MMIO_REG_VAL(reg) = reg_bit_low;
+      NOPx7 NOPx7
 
-      if(bitCounter >= 8) {
+          if (bitCounter >= 8) {
         bitCounter = 0;
-        currByte = (uint32_t) (*++p);
+        currByte = (uint32_t)(*++p);
       }
 
       currBit = 0x80 & currByte;
@@ -2212,10 +3029,9 @@ void Adafruit_NeoPixel::show(void) {
 #error Architecture not supported
 #endif
 
+  // END ARCHITECTURE SELECT ------------------------------------------------
 
-// END ARCHITECTURE SELECT ------------------------------------------------
-
-#if !( defined(NRF52) || defined(NRF52_SERIES) )
+#if !(defined(NRF52) || defined(NRF52_SERIES))
   interrupts();
 #endif
 
@@ -2227,15 +3043,16 @@ void Adafruit_NeoPixel::show(void) {
            if any, is set to INPUT and the new pin is set to OUTPUT.
   @param   p  Arduino pin number (-1 = no pin).
 */
-void Adafruit_NeoPixel::setPin(uint16_t p) {
-  if(begun && (pin >= 0)) pinMode(pin, INPUT);
+void Adafruit_NeoPixel::setPin(int16_t p) {
+  if (begun && (pin >= 0))
+    pinMode(pin, INPUT); // Disable existing out pin
   pin = p;
-  if(begun) {
+  if (begun) {
     pinMode(p, OUTPUT);
     digitalWrite(p, LOW);
   }
 #if defined(__AVR__)
-  port    = portOutputRegister(digitalPinToPort(p));
+  port = portOutputRegister(digitalPinToPort(p));
   pinMask = digitalPinToBitMask(p);
 #endif
 #if defined(ARDUINO_ARCH_STM32) || defined(ARDUINO_ARCH_ARDUINO_CORE_STM32)
@@ -2252,23 +3069,23 @@ void Adafruit_NeoPixel::setPin(uint16_t p) {
   @param   g  Green brightness, 0 = minimum (off), 255 = maximum.
   @param   b  Blue brightness, 0 = minimum (off), 255 = maximum.
 */
-void Adafruit_NeoPixel::setPixelColor(
- uint16_t n, uint8_t r, uint8_t g, uint8_t b) {
+void Adafruit_NeoPixel::setPixelColor(uint16_t n, uint8_t r, uint8_t g,
+                                      uint8_t b) {
 
-  if(n < numLEDs) {
-    if(brightness) { // See notes in setBrightness()
+  if (n < numLEDs) {
+    if (brightness) { // See notes in setBrightness()
       r = (r * brightness) >> 8;
       g = (g * brightness) >> 8;
       b = (b * brightness) >> 8;
     }
     uint8_t *p;
-    if(wOffset == rOffset) { // Is an RGB-type strip
-      p = &pixels[n * 3];    // 3 bytes per pixel
-    } else {                 // Is a WRGB-type strip
-      p = &pixels[n * 4];    // 4 bytes per pixel
-      p[wOffset] = 0;        // But only R,G,B passed -- set W to 0
+    if (wOffset == rOffset) { // Is an RGB-type strip
+      p = &pixels[n * 3];     // 3 bytes per pixel
+    } else {                  // Is a WRGB-type strip
+      p = &pixels[n * 4];     // 4 bytes per pixel
+      p[wOffset] = 0;         // But only R,G,B passed -- set W to 0
     }
-    p[rOffset] = r;          // R,G,B always stored
+    p[rOffset] = r; // R,G,B always stored
     p[gOffset] = g;
     p[bOffset] = b;
   }
@@ -2284,24 +3101,24 @@ void Adafruit_NeoPixel::setPixelColor(
   @param   w  White brightness, 0 = minimum (off), 255 = maximum, ignored
               if using RGB pixels.
 */
-void Adafruit_NeoPixel::setPixelColor(
- uint16_t n, uint8_t r, uint8_t g, uint8_t b, uint8_t w) {
+void Adafruit_NeoPixel::setPixelColor(uint16_t n, uint8_t r, uint8_t g,
+                                      uint8_t b, uint8_t w) {
 
-  if(n < numLEDs) {
-    if(brightness) { // See notes in setBrightness()
+  if (n < numLEDs) {
+    if (brightness) { // See notes in setBrightness()
       r = (r * brightness) >> 8;
       g = (g * brightness) >> 8;
       b = (b * brightness) >> 8;
       w = (w * brightness) >> 8;
     }
     uint8_t *p;
-    if(wOffset == rOffset) { // Is an RGB-type strip
-      p = &pixels[n * 3];    // 3 bytes per pixel (ignore W)
-    } else {                 // Is a WRGB-type strip
-      p = &pixels[n * 4];    // 4 bytes per pixel
-      p[wOffset] = w;        // Store W
+    if (wOffset == rOffset) { // Is an RGB-type strip
+      p = &pixels[n * 3];     // 3 bytes per pixel (ignore W)
+    } else {                  // Is a WRGB-type strip
+      p = &pixels[n * 4];     // 4 bytes per pixel
+      p[wOffset] = w;         // Store W
     }
-    p[rOffset] = r;          // Store R,G,B
+    p[rOffset] = r; // Store R,G,B
     p[gOffset] = g;
     p[bOffset] = b;
   }
@@ -2315,17 +3132,14 @@ void Adafruit_NeoPixel::setPixelColor(
               and least significant byte is blue.
 */
 void Adafruit_NeoPixel::setPixelColor(uint16_t n, uint32_t c) {
-  if(n < numLEDs) {
-    uint8_t *p,
-      r = (uint8_t)(c >> 16),
-      g = (uint8_t)(c >>  8),
-      b = (uint8_t)c;
-    if(brightness) { // See notes in setBrightness()
+  if (n < numLEDs) {
+    uint8_t *p, r = (uint8_t)(c >> 16), g = (uint8_t)(c >> 8), b = (uint8_t)c;
+    if (brightness) { // See notes in setBrightness()
       r = (r * brightness) >> 8;
       g = (g * brightness) >> 8;
       b = (b * brightness) >> 8;
     }
-    if(wOffset == rOffset) {
+    if (wOffset == rOffset) {
       p = &pixels[n * 3];
     } else {
       p = &pixels[n * 4];
@@ -2352,21 +3166,22 @@ void Adafruit_NeoPixel::setPixelColor(uint16_t n, uint32_t c) {
 void Adafruit_NeoPixel::fill(uint32_t c, uint16_t first, uint16_t count) {
   uint16_t i, end;
 
-  if(first >= numLEDs) {
+  if (first >= numLEDs) {
     return; // If first LED is past end of strip, nothing to do
   }
 
   // Calculate the index ONE AFTER the last pixel to fill
-  if(count == 0) {
+  if (count == 0) {
     // Fill to end of strip
     end = numLEDs;
   } else {
     // Ensure that the loop won't go past the last pixel
     end = first + count;
-    if(end > numLEDs) end = numLEDs;
+    if (end > numLEDs)
+      end = numLEDs;
   }
 
-  for(i = first; i < end; i++) {
+  for (i = first; i < end; i++) {
     this->setPixelColor(i, c);
   }
 }
@@ -2429,45 +3244,45 @@ uint32_t Adafruit_NeoPixel::ColorHSV(uint16_t hue, uint8_t sat, uint8_t val) {
   // the constants below are not the multiples of 256 you might expect.
 
   // Convert hue to R,G,B (nested ifs faster than divide+mod+switch):
-  if(hue < 510) {         // Red to Green-1
+  if (hue < 510) { // Red to Green-1
     b = 0;
-    if(hue < 255) {       //   Red to Yellow-1
+    if (hue < 255) { //   Red to Yellow-1
       r = 255;
-      g = hue;            //     g = 0 to 254
-    } else {              //   Yellow to Green-1
-      r = 510 - hue;      //     r = 255 to 1
+      g = hue;       //     g = 0 to 254
+    } else {         //   Yellow to Green-1
+      r = 510 - hue; //     r = 255 to 1
       g = 255;
     }
-  } else if(hue < 1020) { // Green to Blue-1
+  } else if (hue < 1020) { // Green to Blue-1
     r = 0;
-    if(hue <  765) {      //   Green to Cyan-1
+    if (hue < 765) { //   Green to Cyan-1
       g = 255;
-      b = hue - 510;      //     b = 0 to 254
-    } else {              //   Cyan to Blue-1
-      g = 1020 - hue;     //     g = 255 to 1
+      b = hue - 510;  //     b = 0 to 254
+    } else {          //   Cyan to Blue-1
+      g = 1020 - hue; //     g = 255 to 1
       b = 255;
     }
-  } else if(hue < 1530) { // Blue to Red-1
+  } else if (hue < 1530) { // Blue to Red-1
     g = 0;
-    if(hue < 1275) {      //   Blue to Magenta-1
-      r = hue - 1020;     //     r = 0 to 254
+    if (hue < 1275) { //   Blue to Magenta-1
+      r = hue - 1020; //     r = 0 to 254
       b = 255;
-    } else {              //   Magenta to Red-1
+    } else { //   Magenta to Red-1
       r = 255;
-      b = 1530 - hue;     //     b = 255 to 1
+      b = 1530 - hue; //     b = 255 to 1
     }
-  } else {                // Last 0.5 Red (quicker than % operator)
+  } else { // Last 0.5 Red (quicker than % operator)
     r = 255;
     g = b = 0;
   }
 
   // Apply saturation and value to R,G,B, pack into 32-bit result:
-  uint32_t v1 =   1 + val; // 1 to 256; allows >>8 instead of /255
-  uint16_t s1 =   1 + sat; // 1 to 256; same reason
-  uint8_t  s2 = 255 - sat; // 255 to 0
+  uint32_t v1 = 1 + val;  // 1 to 256; allows >>8 instead of /255
+  uint16_t s1 = 1 + sat;  // 1 to 256; same reason
+  uint8_t s2 = 255 - sat; // 255 to 0
   return ((((((r * s1) >> 8) + s2) * v1) & 0xff00) << 8) |
-          (((((g * s1) >> 8) + s2) * v1) & 0xff00)       |
-         ( ((((b * s1) >> 8) + s2) * v1)           >> 8);
+         (((((g * s1) >> 8) + s2) * v1) & 0xff00) |
+         (((((b * s1) >> 8) + s2) * v1) >> 8);
 }
 
 /*!
@@ -2482,44 +3297,41 @@ uint32_t Adafruit_NeoPixel::ColorHSV(uint16_t hue, uint8_t sat, uint8_t val) {
            This gets more pronounced at lower brightness levels.
 */
 uint32_t Adafruit_NeoPixel::getPixelColor(uint16_t n) const {
-  if(n >= numLEDs) return 0; // Out of bounds, return no color.
+  if (n >= numLEDs)
+    return 0; // Out of bounds, return no color.
 
   uint8_t *p;
 
-  if(wOffset == rOffset) { // Is RGB-type device
+  if (wOffset == rOffset) { // Is RGB-type device
     p = &pixels[n * 3];
-    if(brightness) {
+    if (brightness) {
       // Stored color was decimated by setBrightness(). Returned value
       // attempts to scale back to an approximation of the original 24-bit
       // value used when setting the pixel color, but there will always be
       // some error -- those bits are simply gone. Issue is most
       // pronounced at low brightness levels.
       return (((uint32_t)(p[rOffset] << 8) / brightness) << 16) |
-             (((uint32_t)(p[gOffset] << 8) / brightness) <<  8) |
-             ( (uint32_t)(p[bOffset] << 8) / brightness       );
+             (((uint32_t)(p[gOffset] << 8) / brightness) << 8) |
+             ((uint32_t)(p[bOffset] << 8) / brightness);
     } else {
       // No brightness adjustment has been made -- return 'raw' color
-      return ((uint32_t)p[rOffset] << 16) |
-             ((uint32_t)p[gOffset] <<  8) |
-              (uint32_t)p[bOffset];
+      return ((uint32_t)p[rOffset] << 16) | ((uint32_t)p[gOffset] << 8) |
+             (uint32_t)p[bOffset];
     }
-  } else {                 // Is RGBW-type device
+  } else { // Is RGBW-type device
     p = &pixels[n * 4];
-    if(brightness) { // Return scaled color
+    if (brightness) { // Return scaled color
       return (((uint32_t)(p[wOffset] << 8) / brightness) << 24) |
              (((uint32_t)(p[rOffset] << 8) / brightness) << 16) |
-             (((uint32_t)(p[gOffset] << 8) / brightness) <<  8) |
-             ( (uint32_t)(p[bOffset] << 8) / brightness       );
+             (((uint32_t)(p[gOffset] << 8) / brightness) << 8) |
+             ((uint32_t)(p[bOffset] << 8) / brightness);
     } else { // Return raw color
-      return ((uint32_t)p[wOffset] << 24) |
-             ((uint32_t)p[rOffset] << 16) |
-             ((uint32_t)p[gOffset] <<  8) |
-              (uint32_t)p[bOffset];
+      return ((uint32_t)p[wOffset] << 24) | ((uint32_t)p[rOffset] << 16) |
+             ((uint32_t)p[gOffset] << 8) | (uint32_t)p[bOffset];
     }
   }
 }
 
-
 /*!
   @brief   Adjust output brightness. Does not immediately affect what's
            currently displayed on the LEDs. The next call to show() will
@@ -2543,7 +3355,7 @@ void Adafruit_NeoPixel::setBrightness(uint8_t b) {
   // (color values are interpreted literally; no scaling), 1 = min
   // brightness (off), 255 = just below max brightness.
   uint8_t newBrightness = b + 1;
-  if(newBrightness != brightness) { // Compare against prior value
+  if (newBrightness != brightness) { // Compare against prior value
     // Brightness has changed -- re-scale existing data in RAM,
     // This process is potentially "lossy," especially when increasing
     // brightness. The tight timing in the WS2811/WS2812 code means there
@@ -2554,15 +3366,17 @@ void Adafruit_NeoPixel::setBrightness(uint8_t b) {
     // the limited number of steps (quantization) in the old data will be
     // quite visible in the re-scaled version. For a non-destructive
     // change, you'll need to re-render the full strip data. C'est la vie.
-    uint8_t  c,
-            *ptr           = pixels,
-             oldBrightness = brightness - 1; // De-wrap old brightness value
+    uint8_t c, *ptr = pixels,
+               oldBrightness = brightness - 1; // De-wrap old brightness value
     uint16_t scale;
-    if(oldBrightness == 0) scale = 0; // Avoid /0
-    else if(b == 255) scale = 65535 / oldBrightness;
-    else scale = (((uint16_t)newBrightness << 8) - 1) / oldBrightness;
-    for(uint16_t i=0; i<numBytes; i++) {
-      c      = *ptr;
+    if (oldBrightness == 0)
+      scale = 0; // Avoid /0
+    else if (b == 255)
+      scale = 65535 / oldBrightness;
+    else
+      scale = (((uint16_t)newBrightness << 8) - 1) / oldBrightness;
+    for (uint16_t i = 0; i < numBytes; i++) {
+      c = *ptr;
       *ptr++ = (c * scale) >> 8;
     }
     brightness = newBrightness;
@@ -2573,16 +3387,12 @@ void Adafruit_NeoPixel::setBrightness(uint8_t b) {
   @brief   Retrieve the last-set brightness value for the strip.
   @return  Brightness value: 0 = minimum (off), 255 = maximum.
 */
-uint8_t Adafruit_NeoPixel::getBrightness(void) const {
-  return brightness - 1;
-}
+uint8_t Adafruit_NeoPixel::getBrightness(void) const { return brightness - 1; }
 
 /*!
   @brief   Fill the whole NeoPixel strip with 0 / black / off.
 */
-void Adafruit_NeoPixel::clear(void) {
-  memset(pixels, 0, numBytes);
-}
+void Adafruit_NeoPixel::clear(void) { memset(pixels, 0, numBytes); }
 
 // A 32-bit variant of gamma8() that applies the same function
 // to all components of a packed RGB or WRGB value.
@@ -2596,6 +3406,35 @@ uint32_t Adafruit_NeoPixel::gamma32(uint32_t x) {
   // someone's storing information in the unused most significant byte
   // of an RGB value, but this seems exceedingly rare and if it's
   // encountered in reality they can mask values going in or coming out.
-  for(uint8_t i=0; i<4; i++) y[i] = gamma8(y[i]);
+  for (uint8_t i = 0; i < 4; i++)
+    y[i] = gamma8(y[i]);
   return x; // Packed 32-bit return
 }
+
+/*!
+  @brief   Fill NeoPixel strip with one or more cycles of hues.
+           Everyone loves the rainbow swirl so much, now it's canon!
+  @param   first_hue   Hue of first pixel, 0-65535, representing one full
+                       cycle of the color wheel. Each subsequent pixel will
+                       be offset to complete one or more cycles over the
+                       length of the strip.
+  @param   reps        Number of cycles of the color wheel over the length
+                       of the strip. Default is 1. Negative values can be
+                       used to reverse the hue order.
+  @param   saturation  Saturation (optional), 0-255 = gray to pure hue,
+                       default = 255.
+  @param   brightness  Brightness/value (optional), 0-255 = off to max,
+                       default = 255. This is distinct and in combination
+                       with any configured global strip brightness.
+  @param   gammify     If true (default), apply gamma correction to colors
+                       for better appearance.
+*/
+void Adafruit_NeoPixel::rainbow(uint16_t first_hue, int8_t reps,
+  uint8_t saturation, uint8_t brightness, bool gammify) {
+  for (uint16_t i=0; i<numLEDs; i++) {
+    uint16_t hue = first_hue + (i * reps * 65536) / numLEDs;
+    uint32_t color = ColorHSV(hue, saturation, brightness);
+    if (gammify) color = gamma32(color);
+    setPixelColor(i, color);
+  }
+}
diff --git a/ampel-firmware/src/lib/Adafruit_NeoPixel/Adafruit_NeoPixel.h b/ampel-firmware/src/lib/Adafruit_NeoPixel/Adafruit_NeoPixel.h
index 955be39a23b107845a821cdf6763d25c92b9f9bc..53d29f7ccc536a2d99aecaeb5cdab6ad9e3fb6d8 100644
--- a/ampel-firmware/src/lib/Adafruit_NeoPixel/Adafruit_NeoPixel.h
+++ b/ampel-firmware/src/lib/Adafruit_NeoPixel/Adafruit_NeoPixel.h
@@ -37,16 +37,28 @@
 #define ADAFRUIT_NEOPIXEL_H
 
 #ifdef ARDUINO
-  #if (ARDUINO >= 100)
-  #include <Arduino.h>
-  #else
-  #include <WProgram.h>
-  #include <pins_arduino.h>
-  #endif
+#if (ARDUINO >= 100)
+#include <Arduino.h>
+#else
+#include <WProgram.h>
+#include <pins_arduino.h>
+#endif
+
+#ifdef USE_TINYUSB // For Serial when selecting TinyUSB
+#include <Adafruit_TinyUSB.h>
+#endif
+
 #endif
 
 #ifdef TARGET_LPC1768
-  #include <Arduino.h>
+#include <Arduino.h>
+#endif
+
+#if defined(ARDUINO_ARCH_RP2040)
+#include <stdlib.h>
+#include "hardware/pio.h"
+#include "hardware/clocks.h"
+#include "rp2040_pio.h"
 #endif
 
 // The order of primary colors in the NeoPixel data stream can vary among
@@ -76,42 +88,42 @@
 
 // RGB NeoPixel permutations; white and red offsets are always same
 // Offset:         W        R        G        B
-#define NEO_RGB  ((0<<6) | (0<<4) | (1<<2) | (2)) ///< Transmit as R,G,B
-#define NEO_RBG  ((0<<6) | (0<<4) | (2<<2) | (1)) ///< Transmit as R,B,G
-#define NEO_GRB  ((1<<6) | (1<<4) | (0<<2) | (2)) ///< Transmit as G,R,B
-#define NEO_GBR  ((2<<6) | (2<<4) | (0<<2) | (1)) ///< Transmit as G,B,R
-#define NEO_BRG  ((1<<6) | (1<<4) | (2<<2) | (0)) ///< Transmit as B,R,G
-#define NEO_BGR  ((2<<6) | (2<<4) | (1<<2) | (0)) ///< Transmit as B,G,R
+#define NEO_RGB ((0 << 6) | (0 << 4) | (1 << 2) | (2)) ///< Transmit as R,G,B
+#define NEO_RBG ((0 << 6) | (0 << 4) | (2 << 2) | (1)) ///< Transmit as R,B,G
+#define NEO_GRB ((1 << 6) | (1 << 4) | (0 << 2) | (2)) ///< Transmit as G,R,B
+#define NEO_GBR ((2 << 6) | (2 << 4) | (0 << 2) | (1)) ///< Transmit as G,B,R
+#define NEO_BRG ((1 << 6) | (1 << 4) | (2 << 2) | (0)) ///< Transmit as B,R,G
+#define NEO_BGR ((2 << 6) | (2 << 4) | (1 << 2) | (0)) ///< Transmit as B,G,R
 
 // RGBW NeoPixel permutations; all 4 offsets are distinct
 // Offset:         W          R          G          B
-#define NEO_WRGB ((0<<6) | (1<<4) | (2<<2) | (3)) ///< Transmit as W,R,G,B
-#define NEO_WRBG ((0<<6) | (1<<4) | (3<<2) | (2)) ///< Transmit as W,R,B,G
-#define NEO_WGRB ((0<<6) | (2<<4) | (1<<2) | (3)) ///< Transmit as W,G,R,B
-#define NEO_WGBR ((0<<6) | (3<<4) | (1<<2) | (2)) ///< Transmit as W,G,B,R
-#define NEO_WBRG ((0<<6) | (2<<4) | (3<<2) | (1)) ///< Transmit as W,B,R,G
-#define NEO_WBGR ((0<<6) | (3<<4) | (2<<2) | (1)) ///< Transmit as W,B,G,R
+#define NEO_WRGB ((0 << 6) | (1 << 4) | (2 << 2) | (3)) ///< Transmit as W,R,G,B
+#define NEO_WRBG ((0 << 6) | (1 << 4) | (3 << 2) | (2)) ///< Transmit as W,R,B,G
+#define NEO_WGRB ((0 << 6) | (2 << 4) | (1 << 2) | (3)) ///< Transmit as W,G,R,B
+#define NEO_WGBR ((0 << 6) | (3 << 4) | (1 << 2) | (2)) ///< Transmit as W,G,B,R
+#define NEO_WBRG ((0 << 6) | (2 << 4) | (3 << 2) | (1)) ///< Transmit as W,B,R,G
+#define NEO_WBGR ((0 << 6) | (3 << 4) | (2 << 2) | (1)) ///< Transmit as W,B,G,R
 
-#define NEO_RWGB ((1<<6) | (0<<4) | (2<<2) | (3)) ///< Transmit as R,W,G,B
-#define NEO_RWBG ((1<<6) | (0<<4) | (3<<2) | (2)) ///< Transmit as R,W,B,G
-#define NEO_RGWB ((2<<6) | (0<<4) | (1<<2) | (3)) ///< Transmit as R,G,W,B
-#define NEO_RGBW ((3<<6) | (0<<4) | (1<<2) | (2)) ///< Transmit as R,G,B,W
-#define NEO_RBWG ((2<<6) | (0<<4) | (3<<2) | (1)) ///< Transmit as R,B,W,G
-#define NEO_RBGW ((3<<6) | (0<<4) | (2<<2) | (1)) ///< Transmit as R,B,G,W
+#define NEO_RWGB ((1 << 6) | (0 << 4) | (2 << 2) | (3)) ///< Transmit as R,W,G,B
+#define NEO_RWBG ((1 << 6) | (0 << 4) | (3 << 2) | (2)) ///< Transmit as R,W,B,G
+#define NEO_RGWB ((2 << 6) | (0 << 4) | (1 << 2) | (3)) ///< Transmit as R,G,W,B
+#define NEO_RGBW ((3 << 6) | (0 << 4) | (1 << 2) | (2)) ///< Transmit as R,G,B,W
+#define NEO_RBWG ((2 << 6) | (0 << 4) | (3 << 2) | (1)) ///< Transmit as R,B,W,G
+#define NEO_RBGW ((3 << 6) | (0 << 4) | (2 << 2) | (1)) ///< Transmit as R,B,G,W
 
-#define NEO_GWRB ((1<<6) | (2<<4) | (0<<2) | (3)) ///< Transmit as G,W,R,B
-#define NEO_GWBR ((1<<6) | (3<<4) | (0<<2) | (2)) ///< Transmit as G,W,B,R
-#define NEO_GRWB ((2<<6) | (1<<4) | (0<<2) | (3)) ///< Transmit as G,R,W,B
-#define NEO_GRBW ((3<<6) | (1<<4) | (0<<2) | (2)) ///< Transmit as G,R,B,W
-#define NEO_GBWR ((2<<6) | (3<<4) | (0<<2) | (1)) ///< Transmit as G,B,W,R
-#define NEO_GBRW ((3<<6) | (2<<4) | (0<<2) | (1)) ///< Transmit as G,B,R,W
+#define NEO_GWRB ((1 << 6) | (2 << 4) | (0 << 2) | (3)) ///< Transmit as G,W,R,B
+#define NEO_GWBR ((1 << 6) | (3 << 4) | (0 << 2) | (2)) ///< Transmit as G,W,B,R
+#define NEO_GRWB ((2 << 6) | (1 << 4) | (0 << 2) | (3)) ///< Transmit as G,R,W,B
+#define NEO_GRBW ((3 << 6) | (1 << 4) | (0 << 2) | (2)) ///< Transmit as G,R,B,W
+#define NEO_GBWR ((2 << 6) | (3 << 4) | (0 << 2) | (1)) ///< Transmit as G,B,W,R
+#define NEO_GBRW ((3 << 6) | (2 << 4) | (0 << 2) | (1)) ///< Transmit as G,B,R,W
 
-#define NEO_BWRG ((1<<6) | (2<<4) | (3<<2) | (0)) ///< Transmit as B,W,R,G
-#define NEO_BWGR ((1<<6) | (3<<4) | (2<<2) | (0)) ///< Transmit as B,W,G,R
-#define NEO_BRWG ((2<<6) | (1<<4) | (3<<2) | (0)) ///< Transmit as B,R,W,G
-#define NEO_BRGW ((3<<6) | (1<<4) | (2<<2) | (0)) ///< Transmit as B,R,G,W
-#define NEO_BGWR ((2<<6) | (3<<4) | (1<<2) | (0)) ///< Transmit as B,G,W,R
-#define NEO_BGRW ((3<<6) | (2<<4) | (1<<2) | (0)) ///< Transmit as B,G,R,W
+#define NEO_BWRG ((1 << 6) | (2 << 4) | (3 << 2) | (0)) ///< Transmit as B,W,R,G
+#define NEO_BWGR ((1 << 6) | (3 << 4) | (2 << 2) | (0)) ///< Transmit as B,W,G,R
+#define NEO_BRWG ((2 << 6) | (1 << 4) | (3 << 2) | (0)) ///< Transmit as B,R,W,G
+#define NEO_BRGW ((3 << 6) | (1 << 4) | (2 << 2) | (0)) ///< Transmit as B,R,G,W
+#define NEO_BGWR ((2 << 6) | (3 << 4) | (1 << 2) | (0)) ///< Transmit as B,G,W,R
+#define NEO_BGRW ((3 << 6) | (2 << 4) | (1 << 2) | (0)) ///< Transmit as B,G,R,W
 
 // Add NEO_KHZ400 to the color order value to indicate a 400 KHz device.
 // All but the earliest v1 NeoPixels expect an 800 KHz data stream, this is
@@ -134,7 +146,7 @@
 #ifdef NEO_KHZ400
 typedef uint16_t neoPixelType; ///< 3rd arg to Adafruit_NeoPixel constructor
 #else
-typedef uint8_t  neoPixelType; ///< 3rd arg to Adafruit_NeoPixel constructor
+typedef uint8_t neoPixelType; ///< 3rd arg to Adafruit_NeoPixel constructor
 #endif
 
 // These two tables are declared outside the Adafruit_NeoPixel class
@@ -149,22 +161,24 @@ for x in range(256):
     if x&15 == 15: print
 */
 static const uint8_t PROGMEM _NeoPixelSineTable[256] = {
-  128,131,134,137,140,143,146,149,152,155,158,162,165,167,170,173,
-  176,179,182,185,188,190,193,196,198,201,203,206,208,211,213,215,
-  218,220,222,224,226,228,230,232,234,235,237,238,240,241,243,244,
-  245,246,248,249,250,250,251,252,253,253,254,254,254,255,255,255,
-  255,255,255,255,254,254,254,253,253,252,251,250,250,249,248,246,
-  245,244,243,241,240,238,237,235,234,232,230,228,226,224,222,220,
-  218,215,213,211,208,206,203,201,198,196,193,190,188,185,182,179,
-  176,173,170,167,165,162,158,155,152,149,146,143,140,137,134,131,
-  128,124,121,118,115,112,109,106,103,100, 97, 93, 90, 88, 85, 82,
-   79, 76, 73, 70, 67, 65, 62, 59, 57, 54, 52, 49, 47, 44, 42, 40,
-   37, 35, 33, 31, 29, 27, 25, 23, 21, 20, 18, 17, 15, 14, 12, 11,
-   10,  9,  7,  6,  5,  5,  4,  3,  2,  2,  1,  1,  1,  0,  0,  0,
-    0,  0,  0,  0,  1,  1,  1,  2,  2,  3,  4,  5,  5,  6,  7,  9,
-   10, 11, 12, 14, 15, 17, 18, 20, 21, 23, 25, 27, 29, 31, 33, 35,
-   37, 40, 42, 44, 47, 49, 52, 54, 57, 59, 62, 65, 67, 70, 73, 76,
-   79, 82, 85, 88, 90, 93, 97,100,103,106,109,112,115,118,121,124};
+    128, 131, 134, 137, 140, 143, 146, 149, 152, 155, 158, 162, 165, 167, 170,
+    173, 176, 179, 182, 185, 188, 190, 193, 196, 198, 201, 203, 206, 208, 211,
+    213, 215, 218, 220, 222, 224, 226, 228, 230, 232, 234, 235, 237, 238, 240,
+    241, 243, 244, 245, 246, 248, 249, 250, 250, 251, 252, 253, 253, 254, 254,
+    254, 255, 255, 255, 255, 255, 255, 255, 254, 254, 254, 253, 253, 252, 251,
+    250, 250, 249, 248, 246, 245, 244, 243, 241, 240, 238, 237, 235, 234, 232,
+    230, 228, 226, 224, 222, 220, 218, 215, 213, 211, 208, 206, 203, 201, 198,
+    196, 193, 190, 188, 185, 182, 179, 176, 173, 170, 167, 165, 162, 158, 155,
+    152, 149, 146, 143, 140, 137, 134, 131, 128, 124, 121, 118, 115, 112, 109,
+    106, 103, 100, 97,  93,  90,  88,  85,  82,  79,  76,  73,  70,  67,  65,
+    62,  59,  57,  54,  52,  49,  47,  44,  42,  40,  37,  35,  33,  31,  29,
+    27,  25,  23,  21,  20,  18,  17,  15,  14,  12,  11,  10,  9,   7,   6,
+    5,   5,   4,   3,   2,   2,   1,   1,   1,   0,   0,   0,   0,   0,   0,
+    0,   1,   1,   1,   2,   2,   3,   4,   5,   5,   6,   7,   9,   10,  11,
+    12,  14,  15,  17,  18,  20,  21,  23,  25,  27,  29,  31,  33,  35,  37,
+    40,  42,  44,  47,  49,  52,  54,  57,  59,  62,  65,  67,  70,  73,  76,
+    79,  82,  85,  88,  90,  93,  97,  100, 103, 106, 109, 112, 115, 118, 121,
+    124};
 
 /* Similar to above, but for an 8-bit gamma-correction table.
    Copy & paste this snippet into a Python REPL to regenerate:
@@ -175,49 +189,49 @@ for x in range(256):
     if x&15 == 15: print
 */
 static const uint8_t PROGMEM _NeoPixelGammaTable[256] = {
-    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
-    0,  0,  0,  0,  0,  0,  0,  0,  1,  1,  1,  1,  1,  1,  1,  1,
-    1,  1,  1,  1,  2,  2,  2,  2,  2,  2,  2,  2,  3,  3,  3,  3,
-    3,  3,  4,  4,  4,  4,  5,  5,  5,  5,  5,  6,  6,  6,  6,  7,
-    7,  7,  8,  8,  8,  9,  9,  9, 10, 10, 10, 11, 11, 11, 12, 12,
-   13, 13, 13, 14, 14, 15, 15, 16, 16, 17, 17, 18, 18, 19, 19, 20,
-   20, 21, 21, 22, 22, 23, 24, 24, 25, 25, 26, 27, 27, 28, 29, 29,
-   30, 31, 31, 32, 33, 34, 34, 35, 36, 37, 38, 38, 39, 40, 41, 42,
-   42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57,
-   58, 59, 60, 61, 62, 63, 64, 65, 66, 68, 69, 70, 71, 72, 73, 75,
-   76, 77, 78, 80, 81, 82, 84, 85, 86, 88, 89, 90, 92, 93, 94, 96,
-   97, 99,100,102,103,105,106,108,109,111,112,114,115,117,119,120,
-  122,124,125,127,129,130,132,134,136,137,139,141,143,145,146,148,
-  150,152,154,156,158,160,162,164,166,168,170,172,174,176,178,180,
-  182,184,186,188,191,193,195,197,199,202,204,206,209,211,213,215,
-  218,220,223,225,227,230,232,235,237,240,242,245,247,250,252,255};
+    0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+    0,   0,   0,   0,   0,   0,   0,   0,   0,   1,   1,   1,   1,   1,   1,
+    1,   1,   1,   1,   1,   1,   2,   2,   2,   2,   2,   2,   2,   2,   3,
+    3,   3,   3,   3,   3,   4,   4,   4,   4,   5,   5,   5,   5,   5,   6,
+    6,   6,   6,   7,   7,   7,   8,   8,   8,   9,   9,   9,   10,  10,  10,
+    11,  11,  11,  12,  12,  13,  13,  13,  14,  14,  15,  15,  16,  16,  17,
+    17,  18,  18,  19,  19,  20,  20,  21,  21,  22,  22,  23,  24,  24,  25,
+    25,  26,  27,  27,  28,  29,  29,  30,  31,  31,  32,  33,  34,  34,  35,
+    36,  37,  38,  38,  39,  40,  41,  42,  42,  43,  44,  45,  46,  47,  48,
+    49,  50,  51,  52,  53,  54,  55,  56,  57,  58,  59,  60,  61,  62,  63,
+    64,  65,  66,  68,  69,  70,  71,  72,  73,  75,  76,  77,  78,  80,  81,
+    82,  84,  85,  86,  88,  89,  90,  92,  93,  94,  96,  97,  99,  100, 102,
+    103, 105, 106, 108, 109, 111, 112, 114, 115, 117, 119, 120, 122, 124, 125,
+    127, 129, 130, 132, 134, 136, 137, 139, 141, 143, 145, 146, 148, 150, 152,
+    154, 156, 158, 160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 180, 182,
+    184, 186, 188, 191, 193, 195, 197, 199, 202, 204, 206, 209, 211, 213, 215,
+    218, 220, 223, 225, 227, 230, 232, 235, 237, 240, 242, 245, 247, 250, 252,
+    255};
 
-/*! 
+/*!
     @brief  Class that stores state and functions for interacting with
             Adafruit NeoPixels and compatible devices.
 */
 class Adafruit_NeoPixel {
 
- public:
-
+public:
   // Constructor: number of LEDs, pin number, LED type
-  Adafruit_NeoPixel(uint16_t n, uint16_t pin=6,
-    neoPixelType type=NEO_GRB + NEO_KHZ800);
+  Adafruit_NeoPixel(uint16_t n, int16_t pin = 6,
+                    neoPixelType type = NEO_GRB + NEO_KHZ800);
   Adafruit_NeoPixel(void);
   ~Adafruit_NeoPixel();
 
-  void              begin(void);
-  void              show(void);
-  void              setPin(uint16_t p);
-  void              setPixelColor(uint16_t n, uint8_t r, uint8_t g, uint8_t b);
-  void              setPixelColor(uint16_t n, uint8_t r, uint8_t g, uint8_t b,
-                      uint8_t w);
-  void              setPixelColor(uint16_t n, uint32_t c);
-  void              fill(uint32_t c=0, uint16_t first=0, uint16_t count=0);
-  void              setBrightness(uint8_t);
-  void              clear(void);
-  void              updateLength(uint16_t n);
-  void              updateType(neoPixelType t);
+  void begin(void);
+  void show(void);
+  void setPin(int16_t p);
+  void setPixelColor(uint16_t n, uint8_t r, uint8_t g, uint8_t b);
+  void setPixelColor(uint16_t n, uint8_t r, uint8_t g, uint8_t b, uint8_t w);
+  void setPixelColor(uint16_t n, uint32_t c);
+  void fill(uint32_t c = 0, uint16_t first = 0, uint16_t count = 0);
+  void setBrightness(uint8_t);
+  void clear(void);
+  void updateLength(uint16_t n);
+  void updateType(neoPixelType t);
   /*!
     @brief   Check whether a call to show() will start sending data
              immediately or will 'block' for a required interval. NeoPixels
@@ -232,10 +246,26 @@ class Adafruit_NeoPixel {
              if show() would block (meaning some idle time is available).
   */
   bool canShow(void) {
-    if (endTime > micros()) {
-      endTime = micros();
+    // It's normal and possible for endTime to exceed micros() if the
+    // 32-bit clock counter has rolled over (about every 70 minutes).
+    // Since both are uint32_t, a negative delta correctly maps back to
+    // positive space, and it would seem like the subtraction below would
+    // suffice. But a problem arises if code invokes show() very
+    // infrequently...the micros() counter may roll over MULTIPLE times in
+    // that interval, the delta calculation is no longer correct and the
+    // next update may stall for a very long time. The check below resets
+    // the latch counter if a rollover has occurred. This can cause an
+    // extra delay of up to 300 microseconds in the rare case where a
+    // show() call happens precisely around the rollover, but that's
+    // neither likely nor especially harmful, vs. other code that might
+    // stall for 30+ minutes, or having to document and frequently remind
+    // and/or provide tech support explaining an unintuitive need for
+    // show() calls at least once an hour.
+    uint32_t now = micros();
+    if (endTime > now) {
+      endTime = now;
     }
-    return (micros() - endTime) >= 300L;
+    return (now - endTime) >= 300L;
   }
   /*!
     @brief   Get a pointer directly to the NeoPixel data buffer in RAM.
@@ -251,19 +281,19 @@ class Adafruit_NeoPixel {
              writes past the ends of the buffer. Great power, great
              responsibility and all that.
   */
-  uint8_t          *getPixels(void) const { return pixels; };
-  uint8_t           getBrightness(void) const;
+  uint8_t *getPixels(void) const { return pixels; };
+  uint8_t getBrightness(void) const;
   /*!
     @brief   Retrieve the pin number used for NeoPixel data output.
     @return  Arduino pin number (-1 if not set).
   */
-  int16_t           getPin(void) const { return pin; };
+  int16_t getPin(void) const { return pin; };
   /*!
     @brief   Return the number of pixels in an Adafruit_NeoPixel strip object.
     @return  Pixel count (0 if not set).
   */
-  uint16_t          numPixels(void) const { return numLEDs; }
-  uint32_t          getPixelColor(uint16_t n) const;
+  uint16_t numPixels(void) const { return numLEDs; }
+  uint32_t getPixelColor(uint16_t n) const;
   /*!
     @brief   An 8-bit integer sine wave function, not directly compatible
              with standard trigonometric units like radians or degrees.
@@ -276,7 +306,7 @@ class Adafruit_NeoPixel {
              a signed int8_t, but you'll most likely want unsigned as this
              output is often used for pixel brightness in animation effects.
   */
-  static uint8_t    sine8(uint8_t x) {
+  static uint8_t sine8(uint8_t x) {
     return pgm_read_byte(&_NeoPixelSineTable[x]); // 0-255 in, 0-255 out
   }
   /*!
@@ -290,7 +320,7 @@ class Adafruit_NeoPixel {
              NeoPixels in average tasks. If you need finer control you'll
              need to provide your own gamma-correction function instead.
   */
-  static uint8_t    gamma8(uint8_t x) {
+  static uint8_t gamma8(uint8_t x) {
     return pgm_read_byte(&_NeoPixelGammaTable[x]); // 0-255 in, 0-255 out
   }
   /*!
@@ -304,8 +334,8 @@ class Adafruit_NeoPixel {
              function. Packed RGB format is predictable, regardless of
              LED strand color order.
   */
-  static uint32_t   Color(uint8_t r, uint8_t g, uint8_t b) {
-    return ((uint32_t)r << 16) | ((uint32_t)g <<  8) | b;
+  static uint32_t Color(uint8_t r, uint8_t g, uint8_t b) {
+    return ((uint32_t)r << 16) | ((uint32_t)g << 8) | b;
   }
   /*!
     @brief   Convert separate red, green, blue and white values into a
@@ -319,10 +349,10 @@ class Adafruit_NeoPixel {
              function. Packed WRGB format is predictable, regardless of
              LED strand color order.
   */
-  static uint32_t   Color(uint8_t r, uint8_t g, uint8_t b, uint8_t w) {
-    return ((uint32_t)w << 24) | ((uint32_t)r << 16) | ((uint32_t)g <<  8) | b;
+  static uint32_t Color(uint8_t r, uint8_t g, uint8_t b, uint8_t w) {
+    return ((uint32_t)w << 24) | ((uint32_t)r << 16) | ((uint32_t)g << 8) | b;
   }
-  static uint32_t   ColorHSV(uint16_t hue, uint8_t sat=255, uint8_t val=255);
+  static uint32_t ColorHSV(uint16_t hue, uint8_t sat = 255, uint8_t val = 255);
   /*!
     @brief   A gamma-correction function for 32-bit packed RGB or WRGB
              colors. Makes color transitions appear more perceptially
@@ -335,31 +365,45 @@ class Adafruit_NeoPixel {
              control you'll need to provide your own gamma-correction
              function instead.
   */
-  static uint32_t   gamma32(uint32_t x);
+  static uint32_t gamma32(uint32_t x);
 
- protected:
+  void rainbow(uint16_t first_hue = 0, int8_t reps = 1,
+               uint8_t saturation = 255, uint8_t brightness = 255,
+               bool gammify = true);
 
-#ifdef NEO_KHZ400  // If 400 KHz NeoPixel support enabled...
-  bool              is800KHz;   ///< true if 800 KHz pixels
+private:
+#if defined(ARDUINO_ARCH_RP2040)
+  void  rp2040Init(uint8_t pin, bool is800KHz);
+  void  rp2040Show(uint8_t pin, uint8_t *pixels, uint32_t numBytes, bool is800KHz);
 #endif
-  bool              begun;      ///< true if begin() previously called
-  uint16_t          numLEDs;    ///< Number of RGB LEDs in strip
-  uint16_t          numBytes;   ///< Size of 'pixels' buffer below
-  int16_t           pin;        ///< Output pin number (-1 if not yet set)
-  uint8_t           brightness; ///< Strip brightness 0-255 (stored as +1)
-  uint8_t          *pixels;     ///< Holds LED color values (3 or 4 bytes each)
-  uint8_t           rOffset;    ///< Red index within each 3- or 4-byte pixel
-  uint8_t           gOffset;    ///< Index of green byte
-  uint8_t           bOffset;    ///< Index of blue byte
-  uint8_t           wOffset;    ///< Index of white (==rOffset if no white)
-  uint32_t          endTime;    ///< Latch timing reference
+
+protected:
+#ifdef NEO_KHZ400 // If 400 KHz NeoPixel support enabled...
+  bool is800KHz; ///< true if 800 KHz pixels
+#endif
+  bool begun;         ///< true if begin() previously called
+  uint16_t numLEDs;   ///< Number of RGB LEDs in strip
+  uint16_t numBytes;  ///< Size of 'pixels' buffer below
+  int16_t pin;        ///< Output pin number (-1 if not yet set)
+  uint8_t brightness; ///< Strip brightness 0-255 (stored as +1)
+  uint8_t *pixels;    ///< Holds LED color values (3 or 4 bytes each)
+  uint8_t rOffset;    ///< Red index within each 3- or 4-byte pixel
+  uint8_t gOffset;    ///< Index of green byte
+  uint8_t bOffset;    ///< Index of blue byte
+  uint8_t wOffset;    ///< Index of white (==rOffset if no white)
+  uint32_t endTime;   ///< Latch timing reference
 #ifdef __AVR__
-  volatile uint8_t *port;       ///< Output PORT register
-  uint8_t           pinMask;    ///< Output PORT bitmask
+  volatile uint8_t *port; ///< Output PORT register
+  uint8_t pinMask;        ///< Output PORT bitmask
 #endif
 #if defined(ARDUINO_ARCH_STM32) || defined(ARDUINO_ARCH_ARDUINO_CORE_STM32)
-  GPIO_TypeDef *gpioPort;       ///< Output GPIO PORT
-  uint32_t gpioPin;             ///< Output GPIO PIN
+  GPIO_TypeDef *gpioPort; ///< Output GPIO PORT
+  uint32_t gpioPin;       ///< Output GPIO PIN
+#endif
+#if defined(ARDUINO_ARCH_RP2040)
+  PIO pio = pio0;
+  int sm = 0;
+  bool init = true;
 #endif
 };
 
diff --git a/ampel-firmware/src/lib/Adafruit_NeoPixel/README.md b/ampel-firmware/src/lib/Adafruit_NeoPixel/README.md
index 8c150501f30d226305021e7f0814616924402fea..eff1337119a105870cb989b97dd10648066c2e90 100644
--- a/ampel-firmware/src/lib/Adafruit_NeoPixel/README.md
+++ b/ampel-firmware/src/lib/Adafruit_NeoPixel/README.md
@@ -56,6 +56,10 @@ Compatibility notes: Port A is not supported on any AVR processors at this time
   - ESP8266 any speed
   - ESP32 any speed
   - Nordic nRF52 (Adafruit Feather nRF52), nRF51 (micro:bit)
+  - Infineon XMC1100 BootKit @ 32 MHz
+  - Infineon XMC1100 2Go @ 32 MHz
+  - Infineon XMC1300 BootKit  @ 32 MHz
+  - Infineon XMC4700 RelaxKit, XMC4800 RelaxKit, XMC4800 IoT Amazon FreeRTOS Kit @ 144 MHz
 
   Check forks for other architectures not listed here!
 
diff --git a/ampel-firmware/src/lib/Adafruit_NeoPixel/esp.c b/ampel-firmware/src/lib/Adafruit_NeoPixel/esp.c
index 9d2853ff6631264a7e9a3ce68cc3f8f5c5f9683d..c480a20501c7cf6d5786dbd6fff0e45864c5faf5 100644
--- a/ampel-firmware/src/lib/Adafruit_NeoPixel/esp.c
+++ b/ampel-firmware/src/lib/Adafruit_NeoPixel/esp.c
@@ -22,6 +22,12 @@
 #include <Arduino.h>
 #include "driver/rmt.h"
 
+#if defined(ESP_IDF_VERSION)
+#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(4, 0, 0)
+#define HAS_ESP_IDF_4
+#endif
+#endif
+
 // This code is adapted from the ESP-IDF v3.4 RMT "led_strip" example, altered
 // to work with the Arduino version of the ESP-IDF (3.2)
 
@@ -89,6 +95,7 @@ void espShow(uint8_t pin, uint8_t *pixels, uint32_t numBytes, boolean is800KHz)
         if (!rmt_reserved_channels[i]) {
             rmt_reserved_channels[i] = true;
             channel = i;
+            break;
         }
     }
     if (channel == ADAFRUIT_RMT_CHANNEL_MAX) {
@@ -96,6 +103,10 @@ void espShow(uint8_t pin, uint8_t *pixels, uint32_t numBytes, boolean is800KHz)
         return;
     }
 
+#if defined(HAS_ESP_IDF_4)
+    rmt_config_t config = RMT_DEFAULT_CONFIG_TX(pin, channel);
+    config.clk_div = 2;
+#else
     // Match default TX config from ESP-IDF version 3.4
     rmt_config_t config = {
         .rmt_mode = RMT_MODE_TX,
@@ -113,12 +124,16 @@ void espShow(uint8_t pin, uint8_t *pixels, uint32_t numBytes, boolean is800KHz)
             .idle_output_en = true,
         }
     };
+#endif
     rmt_config(&config);
     rmt_driver_install(config.channel, 0, 0);
 
     // Convert NS timings to ticks
     uint32_t counter_clk_hz = 0;
 
+#if defined(HAS_ESP_IDF_4)
+    rmt_get_counter_clock(channel, &counter_clk_hz);
+#else
     // this emulates the rmt_get_counter_clock() function from ESP-IDF 3.4
     if (RMT_LL_HW_BASE->conf_ch[config.channel].conf1.ref_always_on == RMT_BASECLK_REF) {
         uint32_t div_cnt = RMT_LL_HW_BASE->conf_ch[config.channel].conf0.div_cnt;
@@ -129,6 +144,7 @@ void espShow(uint8_t pin, uint8_t *pixels, uint32_t numBytes, boolean is800KHz)
         uint32_t div = div_cnt == 0 ? 256 : div_cnt;
         counter_clk_hz = APB_CLK_FREQ / (div);
     }
+#endif
 
     // NS to tick converter
     float ratio = (float)counter_clk_hz / 1e9;
diff --git a/ampel-firmware/src/lib/Adafruit_NeoPixel/esp8266.c b/ampel-firmware/src/lib/Adafruit_NeoPixel/esp8266.c
index bdfa1050669412da0cba1eba318929bda54a9533..51c3f3c8a34f4856f9c2636da364bed5081d2918 100644
--- a/ampel-firmware/src/lib/Adafruit_NeoPixel/esp8266.c
+++ b/ampel-firmware/src/lib/Adafruit_NeoPixel/esp8266.c
@@ -17,16 +17,16 @@ static inline uint32_t _getCycleCount(void) {
 }
 
 #ifdef ESP8266
-void ICACHE_RAM_ATTR espShow(
- uint8_t pin, uint8_t *pixels, uint32_t numBytes, boolean is800KHz) {
+IRAM_ATTR void espShow(
+ uint8_t pin, uint8_t *pixels, uint32_t numBytes, __attribute__((unused)) boolean is800KHz) {
 #else
 void espShow(
  uint8_t pin, uint8_t *pixels, uint32_t numBytes, boolean is800KHz) {
 #endif
 
-#define CYCLES_800_T0H  (F_CPU / 2500000) // 0.4us
-#define CYCLES_800_T1H  (F_CPU / 1250000) // 0.8us
-#define CYCLES_800      (F_CPU /  800000) // 1.25us per bit
+#define CYCLES_800_T0H  (F_CPU / 2500001) // 0.4us
+#define CYCLES_800_T1H  (F_CPU / 1250001) // 0.8us
+#define CYCLES_800      (F_CPU /  800001) // 1.25us per bit
 #define CYCLES_400_T0H  (F_CPU / 2000000) // 0.5uS
 #define CYCLES_400_T1H  (F_CPU /  833333) // 1.2us
 #define CYCLES_400      (F_CPU /  400000) // 2.5us per bit
diff --git a/ampel-firmware/src/lib/Adafruit_NeoPixel/library.properties b/ampel-firmware/src/lib/Adafruit_NeoPixel/library.properties
index 445fa4891a5661846da99b0e5fb8bee8a851c9fb..4bde4ac077147f65142997598641c5be31669e49 100644
--- a/ampel-firmware/src/lib/Adafruit_NeoPixel/library.properties
+++ b/ampel-firmware/src/lib/Adafruit_NeoPixel/library.properties
@@ -1,5 +1,5 @@
 name=Adafruit NeoPixel
-version=1.7.0
+version=1.10.4
 author=Adafruit
 maintainer=Adafruit <info@adafruit.com>
 sentence=Arduino library for controlling single-wire-based LED pixels and strip.
diff --git a/ampel-firmware/src/lib/Adafruit_NeoPixel/rp2040_pio.h b/ampel-firmware/src/lib/Adafruit_NeoPixel/rp2040_pio.h
new file mode 100644
index 0000000000000000000000000000000000000000..f7ccd46de0a5cc8510f86b10069c6417b57fdde4
--- /dev/null
+++ b/ampel-firmware/src/lib/Adafruit_NeoPixel/rp2040_pio.h
@@ -0,0 +1,63 @@
+// -------------------------------------------------- //
+// This file is autogenerated by pioasm; do not edit! //
+// -------------------------------------------------- //
+
+// Unless you know what you are doing...
+// Lines 47 and 52 have been edited to set transmit bit count
+
+#if !PICO_NO_HARDWARE
+#include "hardware/pio.h"
+#endif
+
+// ------ //
+// ws2812 //
+// ------ //
+
+#define ws2812_wrap_target 0
+#define ws2812_wrap 3
+
+#define ws2812_T1 2
+#define ws2812_T2 5
+#define ws2812_T3 3
+
+static const uint16_t ws2812_program_instructions[] = {
+    //     .wrap_target
+    0x6221, //  0: out    x, 1            side 0 [2]
+    0x1123, //  1: jmp    !x, 3           side 1 [1]
+    0x1400, //  2: jmp    0               side 1 [4]
+    0xa442, //  3: nop                    side 0 [4]
+            //     .wrap
+};
+
+#if !PICO_NO_HARDWARE
+static const struct pio_program ws2812_program = {
+    .instructions = ws2812_program_instructions,
+    .length = 4,
+    .origin = -1,
+};
+
+static inline pio_sm_config ws2812_program_get_default_config(uint offset) {
+  pio_sm_config c = pio_get_default_sm_config();
+  sm_config_set_wrap(&c, offset + ws2812_wrap_target, offset + ws2812_wrap);
+  sm_config_set_sideset(&c, 1, false, false);
+  return c;
+}
+
+#include "hardware/clocks.h"
+static inline void ws2812_program_init(PIO pio, uint sm, uint offset, uint pin,
+                                       float freq, uint bits) {
+  pio_gpio_init(pio, pin);
+  pio_sm_set_consecutive_pindirs(pio, sm, pin, 1, true);
+  pio_sm_config c = ws2812_program_get_default_config(offset);
+  sm_config_set_sideset_pins(&c, pin);
+  sm_config_set_out_shift(&c, false, true,
+                          bits); // <----<<< Length changed to "bits"
+  sm_config_set_fifo_join(&c, PIO_FIFO_JOIN_TX);
+  int cycles_per_bit = ws2812_T1 + ws2812_T2 + ws2812_T3;
+  float div = clock_get_hz(clk_sys) / (freq * cycles_per_bit);
+  sm_config_set_clkdiv(&c, div);
+  pio_sm_init(pio, sm, offset, &c);
+  pio_sm_set_enabled(pio, sm, true);
+}
+
+#endif
diff --git a/ampel-firmware/src/lib/NTPClient-master/.travis.yml b/ampel-firmware/src/lib/NTPClient-master/.travis.yml
deleted file mode 100644
index fa09d0f97ab8d922adfc012cf6849244d54b1cdf..0000000000000000000000000000000000000000
--- a/ampel-firmware/src/lib/NTPClient-master/.travis.yml
+++ /dev/null
@@ -1,10 +0,0 @@
-language: c
-sudo: false
-before_install:
-  - source <(curl -SLs https://raw.githubusercontent.com/adafruit/travis-ci-arduino/master/install.sh)
-script:
-  - build_platform esp8266
-notifications:
-  email:
-    on_success: change
-    on_failure: change
diff --git a/ampel-firmware/src/lib/NTPClient-master/README.md b/ampel-firmware/src/lib/NTPClient-master/README.md
deleted file mode 100644
index 6c8c07a5cf83b1d70302f65a2168e9167cbcd72f..0000000000000000000000000000000000000000
--- a/ampel-firmware/src/lib/NTPClient-master/README.md
+++ /dev/null
@@ -1,47 +0,0 @@
-# NTPClient
-
-[![Build Status](https://travis-ci.org/arduino-libraries/NTPClient.svg?branch=master)](https://travis-ci.org/arduino-libraries/NTPClient)
-
-Connect to a NTP server, here is how:
-
-```cpp
-#include <NTPClient.h>
-// change next line to use with another board/shield
-#include <ESP8266WiFi.h>
-//#include <WiFi.h> // for WiFi shield
-//#include <WiFi101.h> // for WiFi 101 shield or MKR1000
-#include <WiFiUdp.h>
-
-const char *ssid     = "<SSID>";
-const char *password = "<PASSWORD>";
-
-WiFiUDP ntpUDP;
-
-// By default 'pool.ntp.org' is used with 60 seconds update interval and
-// no offset
-NTPClient timeClient(ntpUDP);
-
-// You can specify the time server pool and the offset, (in seconds)
-// additionaly you can specify the update interval (in milliseconds).
-// NTPClient timeClient(ntpUDP, "europe.pool.ntp.org", 3600, 60000);
-
-void setup(){
-  Serial.begin(115200);
-  WiFi.begin(ssid, password);
-
-  while ( WiFi.status() != WL_CONNECTED ) {
-    delay ( 500 );
-    Serial.print ( "." );
-  }
-
-  timeClient.begin();
-}
-
-void loop() {
-  timeClient.update();
-
-  Serial.println(timeClient.getFormattedTime());
-
-  delay(1000);
-}
-```
diff --git a/ampel-firmware/src/lib/NTPClient-master/CHANGELOG b/ampel-firmware/src/lib/NTPClient/CHANGELOG
similarity index 100%
rename from ampel-firmware/src/lib/NTPClient-master/CHANGELOG
rename to ampel-firmware/src/lib/NTPClient/CHANGELOG
diff --git a/ampel-firmware/src/lib/NTPClient-master/NTPClient.cpp b/ampel-firmware/src/lib/NTPClient/NTPClient.cpp
old mode 100644
new mode 100755
similarity index 65%
rename from ampel-firmware/src/lib/NTPClient-master/NTPClient.cpp
rename to ampel-firmware/src/lib/NTPClient/NTPClient.cpp
index 1b52de5af6eefae690044fa9138222fb3aa78d1b..2149a0604a6b585e544c3effa410fec6233e2cc7
--- a/ampel-firmware/src/lib/NTPClient-master/NTPClient.cpp
+++ b/ampel-firmware/src/lib/NTPClient/NTPClient.cpp
@@ -25,7 +25,7 @@ NTPClient::NTPClient(UDP& udp) {
   this->_udp            = &udp;
 }
 
-NTPClient::NTPClient(UDP& udp, int timeOffset) {
+NTPClient::NTPClient(UDP& udp, long timeOffset) {
   this->_udp            = &udp;
   this->_timeOffset     = timeOffset;
 }
@@ -35,24 +35,45 @@ NTPClient::NTPClient(UDP& udp, const char* poolServerName) {
   this->_poolServerName = poolServerName;
 }
 
-NTPClient::NTPClient(UDP& udp, const char* poolServerName, int timeOffset) {
+NTPClient::NTPClient(UDP& udp, IPAddress poolServerIP) {
+  this->_udp            = &udp;
+  this->_poolServerIP   = poolServerIP;
+  this->_poolServerName = NULL;
+}
+
+NTPClient::NTPClient(UDP& udp, const char* poolServerName, long timeOffset) {
   this->_udp            = &udp;
   this->_timeOffset     = timeOffset;
   this->_poolServerName = poolServerName;
 }
 
-NTPClient::NTPClient(UDP& udp, const char* poolServerName, int timeOffset, unsigned long updateInterval) {
+NTPClient::NTPClient(UDP& udp, IPAddress poolServerIP, long timeOffset){
+  this->_udp            = &udp;
+  this->_timeOffset     = timeOffset;
+  this->_poolServerIP   = poolServerIP;
+  this->_poolServerName = NULL;
+}
+
+NTPClient::NTPClient(UDP& udp, const char* poolServerName, long timeOffset, unsigned long updateInterval) {
   this->_udp            = &udp;
   this->_timeOffset     = timeOffset;
   this->_poolServerName = poolServerName;
   this->_updateInterval = updateInterval;
 }
 
+NTPClient::NTPClient(UDP& udp, IPAddress poolServerIP, long timeOffset, unsigned long updateInterval) {
+  this->_udp            = &udp;
+  this->_timeOffset     = timeOffset;
+  this->_poolServerIP   = poolServerIP;
+  this->_poolServerName = NULL;
+  this->_updateInterval = updateInterval;
+}
+
 void NTPClient::begin() {
   this->begin(NTP_DEFAULT_LOCAL_PORT);
 }
 
-void NTPClient::begin(int port) {
+void NTPClient::begin(unsigned int port) {
   this->_port = port;
 
   this->_udp->begin(this->_port);
@@ -60,37 +81,15 @@ void NTPClient::begin(int port) {
   this->_udpSetup = true;
 }
 
-bool NTPClient::isValid(byte * ntpPacket)
-{
-	//Perform a few validity checks on the packet
-	if((ntpPacket[0] & 0b11000000) == 0b11000000)		//Check for LI=UNSYNC
-		return false;
-		
-	if((ntpPacket[0] & 0b00111000) >> 3 < 0b100)		//Check for Version >= 4
-		return false;
-		
-	if((ntpPacket[0] & 0b00000111) != 0b100)			//Check for Mode == Server
-		return false;
-		
-	if((ntpPacket[1] < 1) || (ntpPacket[1] > 15))		//Check for valid Stratum
-		return false;
-
-	if(	ntpPacket[16] == 0 && ntpPacket[17] == 0 && 
-		ntpPacket[18] == 0 && ntpPacket[19] == 0 &&
-		ntpPacket[20] == 0 && ntpPacket[21] == 0 &&
-		ntpPacket[22] == 0 && ntpPacket[22] == 0)		//Check for ReferenceTimestamp != 0
-		return false;
-
-	return true;
-}
-
 bool NTPClient::forceUpdate() {
   #ifdef DEBUG_NTPClient
     Serial.println("Update from NTP Server");
   #endif
+
   // flush any existing packets
   while(this->_udp->parsePacket() != 0)
     this->_udp->flush();
+
   this->sendNTPPacket();
 
   // Wait till data is there or timeout...
@@ -99,20 +98,14 @@ bool NTPClient::forceUpdate() {
   do {
     delay ( 10 );
     cb = this->_udp->parsePacket();
-    
-    if(cb > 0)
-    {
-      this->_udp->read(this->_packetBuffer, NTP_PACKET_SIZE);
-      if(!this->isValid(this->_packetBuffer))
-        cb = 0;
-    }
-    
     if (timeout > 100) return false; // timeout after 1000 ms
     timeout++;
   } while (cb == 0);
 
   this->_lastUpdate = millis() - (10 * (timeout + 1)); // Account for delay in reading the time
 
+  this->_udp->read(this->_packetBuffer, NTP_PACKET_SIZE);
+
   unsigned long highWord = word(this->_packetBuffer[40], this->_packetBuffer[41]);
   unsigned long lowWord = word(this->_packetBuffer[42], this->_packetBuffer[43]);
   // combine the four bytes (two words) into a long integer
@@ -121,73 +114,53 @@ bool NTPClient::forceUpdate() {
 
   this->_currentEpoc = secsSince1900 - SEVENZYYEARS;
 
-  return true;
+  return true;  // return true after successful update
 }
 
 bool NTPClient::update() {
   if ((millis() - this->_lastUpdate >= this->_updateInterval)     // Update after _updateInterval
     || this->_lastUpdate == 0) {                                // Update if there was no update yet.
-    if (!this->_udpSetup) this->begin();                         // setup the UDP client if needed
+    if (!this->_udpSetup || this->_port != NTP_DEFAULT_LOCAL_PORT) this->begin(this->_port); // setup the UDP client if needed
     return this->forceUpdate();
   }
-  return true;
+  return false;   // return false if update does not occur
+}
+
+bool NTPClient::isTimeSet() const {
+  return (this->_lastUpdate != 0); // returns true if the time has been set, else false
 }
 
-unsigned long NTPClient::getEpochTime() {
+unsigned long NTPClient::getEpochTime() const {
   return this->_timeOffset + // User offset
-         this->_currentEpoc + // Epoc returned by the NTP server
+         this->_currentEpoc + // Epoch returned by the NTP server
          ((millis() - this->_lastUpdate) / 1000); // Time since last update
 }
 
-int NTPClient::getDay() {
+int NTPClient::getDay() const {
   return (((this->getEpochTime()  / 86400L) + 4 ) % 7); //0 is Sunday
 }
-int NTPClient::getHours() {
+int NTPClient::getHours() const {
   return ((this->getEpochTime()  % 86400L) / 3600);
 }
-int NTPClient::getMinutes() {
+int NTPClient::getMinutes() const {
   return ((this->getEpochTime() % 3600) / 60);
 }
-int NTPClient::getSeconds() {
+int NTPClient::getSeconds() const {
   return (this->getEpochTime() % 60);
 }
 
-void NTPClient::getFormattedTime(char *formatted_time, unsigned long secs) {
-  unsigned long rawTime = secs ? secs : this->getEpochTime();
-  unsigned int hours = (rawTime % 86400L) / 3600;
-  unsigned int minutes = (rawTime % 3600) / 60;
-  unsigned int seconds = rawTime % 60;
-
-  snprintf(formatted_time, 9, "%02d:%02d:%02d", hours, minutes, seconds);
-}
+String NTPClient::getFormattedTime() const {
+  unsigned long rawTime = this->getEpochTime();
+  unsigned long hours = (rawTime % 86400L) / 3600;
+  String hoursStr = hours < 10 ? "0" + String(hours) : String(hours);
 
-// Based on https://github.com/PaulStoffregen/Time/blob/master/Time.cpp
-void NTPClient::getFormattedDate(char *formatted_date, unsigned long secs) {
-  unsigned long rawTime = (secs ? secs : this->getEpochTime()) / 86400L;  // in days
-  unsigned long days = 0, year = 1970;
-  uint8_t month;
-  static const uint8_t monthDays[]={31,28,31,30,31,30,31,31,30,31,30,31};
+  unsigned long minutes = (rawTime % 3600) / 60;
+  String minuteStr = minutes < 10 ? "0" + String(minutes) : String(minutes);
 
-  while((days += (LEAP_YEAR(year) ? 366 : 365)) <= rawTime)
-    year++;
-  rawTime -= days - (LEAP_YEAR(year) ? 366 : 365); // now it is days in this year, starting at 0
-  days=0;
-  for (month=0; month<12; month++) {
-    uint8_t monthLength;
-    if (month==1) { // february
-      monthLength = LEAP_YEAR(year) ? 29 : 28;
-    } else {
-      monthLength = monthDays[month];
-    }
-    if (rawTime < monthLength) break;
-    rawTime -= monthLength;
-  }
-  month++; // jan is month 1
-  rawTime++; // first day is day 1
+  unsigned long seconds = rawTime % 60;
+  String secondStr = seconds < 10 ? "0" + String(seconds) : String(seconds);
 
-  char formatted_time[9];
-  this->getFormattedTime(formatted_time, secs);
-  snprintf(formatted_date, 23, "%4lu-%02d-%02lu %s%+03d", year, month, rawTime, formatted_time, this->_timeOffset / 3600);
+  return hoursStr + ":" + minuteStr + ":" + secondStr;
 }
 
 void NTPClient::end() {
@@ -204,28 +177,84 @@ void NTPClient::setUpdateInterval(unsigned long updateInterval) {
   this->_updateInterval = updateInterval;
 }
 
+void NTPClient::setPoolServerName(const char* poolServerName) {
+    this->_poolServerName = poolServerName;
+}
+
 void NTPClient::sendNTPPacket() {
   // set all bytes in the buffer to 0
   memset(this->_packetBuffer, 0, NTP_PACKET_SIZE);
   // Initialize values needed to form NTP request
-  // (see URL above for details on the packets)
   this->_packetBuffer[0] = 0b11100011;   // LI, Version, Mode
   this->_packetBuffer[1] = 0;     // Stratum, or type of clock
   this->_packetBuffer[2] = 6;     // Polling Interval
   this->_packetBuffer[3] = 0xEC;  // Peer Clock Precision
   // 8 bytes of zero for Root Delay & Root Dispersion
-  this->_packetBuffer[12]  = 0x49;
+  this->_packetBuffer[12]  = 49;
   this->_packetBuffer[13]  = 0x4E;
-  this->_packetBuffer[14]  = 0x49;
-  this->_packetBuffer[15]  = 0x52;
+  this->_packetBuffer[14]  = 49;
+  this->_packetBuffer[15]  = 52;
 
   // all NTP fields have been given values, now
   // you can send a packet requesting a timestamp:
-  this->_udp->beginPacket(this->_poolServerName, 123); //NTP requests are to port 123
+  if  (this->_poolServerName) {
+    this->_udp->beginPacket(this->_poolServerName, 123);
+  } else {
+    this->_udp->beginPacket(this->_poolServerIP, 123);
+  }
   this->_udp->write(this->_packetBuffer, NTP_PACKET_SIZE);
   this->_udp->endPacket();
 }
 
+void NTPClient::setRandomPort(unsigned int minValue, unsigned int maxValue) {
+  randomSeed(analogRead(0));
+  this->_port = random(minValue, maxValue);
+}
+
+
+/*** Custom code for ampel-firmware ***/
+void NTPClient::getFormattedTime(char *formatted_time, unsigned long secs) {
+  unsigned long rawTime = secs ? secs : this->getEpochTime();
+  unsigned int hours = (rawTime % 86400L) / 3600;
+  unsigned int minutes = (rawTime % 3600) / 60;
+  unsigned int seconds = rawTime % 60;
+
+  snprintf(formatted_time, 9, "%02d:%02d:%02d", hours, minutes, seconds);
+}
+
+#define LEAP_YEAR(Y)     ( (Y>0) && !(Y%4) && ( (Y%100) || !(Y%400) ) )
+
+// Based on https://github.com/PaulStoffregen/Time/blob/master/Time.cpp
+void NTPClient::getFormattedDate(char *formatted_date, unsigned long secs) {
+  unsigned long rawTime = (secs ? secs : this->getEpochTime()) / 86400L;  // in days
+  unsigned long days = 0;
+  unsigned int year = 1970;
+  uint8_t month;
+  static const uint8_t monthDays[]={31,28,31,30,31,30,31,31,30,31,30,31};
+
+  while((days += (LEAP_YEAR(year) ? 366 : 365)) <= rawTime)
+    year++;
+  rawTime -= days - (LEAP_YEAR(year) ? 366 : 365); // now it is days in this year, starting at 0
+  days=0;
+  for (month=0; month<12; month++) {
+    uint8_t monthLength;
+    if (month==1) { // february
+      monthLength = LEAP_YEAR(year) ? 29 : 28;
+    } else {
+      monthLength = monthDays[month];
+    }
+    if (rawTime < monthLength) break;
+    rawTime -= monthLength;
+  }
+  month++; // jan is month 1
+  rawTime++; // first day is day 1
+
+  char formatted_time[9];
+  this->getFormattedTime(formatted_time, secs);
+  snprintf(formatted_date, 23, "%4d-%02d-%02lu %s%+03ld", year, month, rawTime, formatted_time, (this->_timeOffset / 3600) % 100);
+}
+
 void NTPClient::setEpochTime(unsigned long secs) {
   this->_currentEpoc = secs;
 }
+/**************************************************************/
\ No newline at end of file
diff --git a/ampel-firmware/src/lib/NTPClient-master/NTPClient.h b/ampel-firmware/src/lib/NTPClient/NTPClient.h
old mode 100644
new mode 100755
similarity index 61%
rename from ampel-firmware/src/lib/NTPClient-master/NTPClient.h
rename to ampel-firmware/src/lib/NTPClient/NTPClient.h
index 3349dbb7df998fc931874c3f1ec86cda07fc3f80..fb23e46d4ef2e950720590a97aaf809a9ba0c2c7
--- a/ampel-firmware/src/lib/NTPClient-master/NTPClient.h
+++ b/ampel-firmware/src/lib/NTPClient/NTPClient.h
@@ -7,8 +7,6 @@
 #define SEVENZYYEARS 2208988800UL
 #define NTP_PACKET_SIZE 48
 #define NTP_DEFAULT_LOCAL_PORT 1337
-#define LEAP_YEAR(Y)     ( (Y>0) && !(Y%4) && ( (Y%100) || !(Y%400) ) )
-
 
 class NTPClient {
   private:
@@ -16,8 +14,9 @@ class NTPClient {
     bool          _udpSetup       = false;
 
     const char*   _poolServerName = "pool.ntp.org"; // Default time server
-    int           _port           = NTP_DEFAULT_LOCAL_PORT;
-    int           _timeOffset     = 0;
+    IPAddress     _poolServerIP;
+    unsigned int  _port           = NTP_DEFAULT_LOCAL_PORT;
+    long          _timeOffset     = 0;
 
     unsigned long _updateInterval = 60000;  // In ms
 
@@ -27,14 +26,28 @@ class NTPClient {
     byte          _packetBuffer[NTP_PACKET_SIZE];
 
     void          sendNTPPacket();
-    bool          isValid(byte * ntpPacket);
 
   public:
     NTPClient(UDP& udp);
-    NTPClient(UDP& udp, int timeOffset);
+    NTPClient(UDP& udp, long timeOffset);
     NTPClient(UDP& udp, const char* poolServerName);
-    NTPClient(UDP& udp, const char* poolServerName, int timeOffset);
-    NTPClient(UDP& udp, const char* poolServerName, int timeOffset, unsigned long updateInterval);
+    NTPClient(UDP& udp, const char* poolServerName, long timeOffset);
+    NTPClient(UDP& udp, const char* poolServerName, long timeOffset, unsigned long updateInterval);
+    NTPClient(UDP& udp, IPAddress poolServerIP);
+    NTPClient(UDP& udp, IPAddress poolServerIP, long timeOffset);
+    NTPClient(UDP& udp, IPAddress poolServerIP, long timeOffset, unsigned long updateInterval);
+
+    /**
+     * Set time server name
+     *
+     * @param poolServerName
+     */
+    void setPoolServerName(const char* poolServerName);
+
+     /**
+     * Set random local port
+     */
+    void setRandomPort(unsigned int minValue = 49152, unsigned int maxValue = 65535);
 
     /**
      * Starts the underlying UDP client with the default local port
@@ -44,7 +57,7 @@ class NTPClient {
     /**
      * Starts the underlying UDP client with the specified local port
      */
-    void begin(int port);
+    void begin(unsigned int port);
 
     /**
      * This should be called in the main loop of your application. By default an update from the NTP Server is only
@@ -61,10 +74,17 @@ class NTPClient {
      */
     bool forceUpdate();
 
-    int getDay();
-    int getHours();
-    int getMinutes();
-    int getSeconds();
+    /**
+     * This allows to check if the NTPClient successfully received a NTP packet and set the time.
+     *
+     * @return true if time has been set, else false
+     */
+    bool isTimeSet() const;
+
+    int getDay() const;
+    int getHours() const;
+    int getMinutes() const;
+    int getSeconds() const;
 
     /**
      * Changes the time offset. Useful for changing timezones dynamically
@@ -78,28 +98,37 @@ class NTPClient {
     void setUpdateInterval(unsigned long updateInterval);
 
     /**
-    * @return secs argument (or 0 for current time) formatted like `hh:mm:ss`
-    */
-    void getFormattedTime(char *formatted_time, unsigned long secs = 0);
+     * @return time formatted like `hh:mm:ss`
+     */
+    String getFormattedTime() const;
 
     /**
      * @return time in seconds since Jan. 1, 1970
      */
-    unsigned long getEpochTime();
-  
-    /**
-    * @return secs argument (or 0 for current date) formatted to ISO 8601
-    * like `2004-02-12T15:19:21+00:00`
-    */
-    void getFormattedDate(char *formatted_date, unsigned long secs = 0);
+    unsigned long getEpochTime() const;
 
     /**
      * Stops the underlying UDP client
      */
     void end();
-
+    
+/*** Custom code for ampel-firmware ***/
+    
+    /**
+    * @return secs argument (or 0 for current time) formatted like `hh:mm:ss`
+    */
+    void getFormattedTime(char *formatted_time, unsigned long secs = 0);
+    
+    /**
+    * @return secs argument (or 0 for current date) formatted to ISO 8601
+    * like `2004-02-12T15:19:21+00:00`
+    */
+    void getFormattedDate(char *formatted_date, unsigned long secs = 0);
+    
     /**
     * Replace the NTP-fetched time with seconds since Jan. 1, 1970
     */
     void setEpochTime(unsigned long secs);
+
+/**************************************************************/
 };
diff --git a/ampel-firmware/src/lib/NTPClient/README.md b/ampel-firmware/src/lib/NTPClient/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..f83882ce092fc33bc110fc48e72404fb5bc51f3d
--- /dev/null
+++ b/ampel-firmware/src/lib/NTPClient/README.md
@@ -0,0 +1,52 @@
+# NTPClient
+
+[![Check Arduino status](https://github.com/arduino-libraries/NTPClient/actions/workflows/check-arduino.yml/badge.svg)](https://github.com/arduino-libraries/NTPClient/actions/workflows/check-arduino.yml)
+[![Compile Examples status](https://github.com/arduino-libraries/NTPClient/actions/workflows/compile-examples.yml/badge.svg)](https://github.com/arduino-libraries/NTPClient/actions/workflows/compile-examples.yml)
+[![Spell Check status](https://github.com/arduino-libraries/NTPClient/actions/workflows/spell-check.yml/badge.svg)](https://github.com/arduino-libraries/NTPClient/actions/workflows/spell-check.yml)
+
+Connect to a NTP server, here is how:
+
+```cpp
+#include <NTPClient.h>
+// change next line to use with another board/shield
+#include <ESP8266WiFi.h>
+//#include <WiFi.h> // for WiFi shield
+//#include <WiFi101.h> // for WiFi 101 shield or MKR1000
+#include <WiFiUdp.h>
+
+const char *ssid     = "<SSID>";
+const char *password = "<PASSWORD>";
+
+WiFiUDP ntpUDP;
+
+// By default 'pool.ntp.org' is used with 60 seconds update interval and
+// no offset
+NTPClient timeClient(ntpUDP);
+
+// You can specify the time server pool and the offset, (in seconds)
+// additionally you can specify the update interval (in milliseconds).
+// NTPClient timeClient(ntpUDP, "europe.pool.ntp.org", 3600, 60000);
+
+void setup(){
+  Serial.begin(115200);
+  WiFi.begin(ssid, password);
+
+  while ( WiFi.status() != WL_CONNECTED ) {
+    delay ( 500 );
+    Serial.print ( "." );
+  }
+
+  timeClient.begin();
+}
+
+void loop() {
+  timeClient.update();
+
+  Serial.println(timeClient.getFormattedTime());
+
+  delay(1000);
+}
+```
+
+## Function documentation
+`getEpochTime` returns the Unix epoch, which are the seconds elapsed since 00:00:00 UTC on 1 January 1970 (leap seconds are ignored, every day is treated as having 86400 seconds). **Attention**: If you have set a time offset this time offset will be added to your epoch timestamp.
diff --git a/ampel-firmware/src/lib/NTPClient-master/keywords.txt b/ampel-firmware/src/lib/NTPClient/keywords.txt
similarity index 78%
rename from ampel-firmware/src/lib/NTPClient-master/keywords.txt
rename to ampel-firmware/src/lib/NTPClient/keywords.txt
index 1430d0482ee1392f764eaea706ca2d7ba13bb05b..edce98923ec56a7d11a9f20de8c0557b559e6b35 100644
--- a/ampel-firmware/src/lib/NTPClient-master/keywords.txt
+++ b/ampel-firmware/src/lib/NTPClient/keywords.txt
@@ -12,9 +12,13 @@ begin	KEYWORD2
 end	KEYWORD2
 update	KEYWORD2
 forceUpdate	KEYWORD2
+isTimeSet	KEYWORD2
 getDay	KEYWORD2
 getHours	KEYWORD2
 getMinutes	KEYWORD2
 getSeconds	KEYWORD2
 getFormattedTime	KEYWORD2
 getEpochTime	KEYWORD2
+setTimeOffset	KEYWORD2
+setUpdateInterval	KEYWORD2
+setPoolServerName	KEYWORD2
diff --git a/ampel-firmware/src/lib/NTPClient-master/library.json b/ampel-firmware/src/lib/NTPClient/library.json
similarity index 100%
rename from ampel-firmware/src/lib/NTPClient-master/library.json
rename to ampel-firmware/src/lib/NTPClient/library.json
diff --git a/ampel-firmware/src/lib/NTPClient-master/library.properties b/ampel-firmware/src/lib/NTPClient/library.properties
similarity index 95%
rename from ampel-firmware/src/lib/NTPClient-master/library.properties
rename to ampel-firmware/src/lib/NTPClient/library.properties
index d4908ca87a33c8292031a8e06a2da02ab202ffa3..309b75d7dc129f42bc7fc871108410f9b3e1fbea 100644
--- a/ampel-firmware/src/lib/NTPClient-master/library.properties
+++ b/ampel-firmware/src/lib/NTPClient/library.properties
@@ -1,5 +1,5 @@
 name=NTPClient
-version=3.1.0
+version=3.2.0
 author=Fabrice Weinberg
 maintainer=Fabrice Weinberg <fabrice@weinberg.me>
 sentence=An NTPClient to connect to a time server
diff --git a/ampel-firmware/src/lib/PubSubClient/src/PubSubClient.cpp b/ampel-firmware/src/lib/PubSubClient/src/PubSubClient.cpp
index 2b48d2b6b8ff28f5be7ad46a06c2e4f3f389aeae..2619e58e8c0b32c2f2051223140c3d40459e9bc2 100644
--- a/ampel-firmware/src/lib/PubSubClient/src/PubSubClient.cpp
+++ b/ampel-firmware/src/lib/PubSubClient/src/PubSubClient.cpp
@@ -1,161 +1,161 @@
 /*
 
-  PubSubClient.cpp - A simple client for MQTT.
-  Nick O'Leary
-  http://knolleary.net
-*/
+ PubSubClient.cpp - A simple client for MQTT.
+ Nick O'Leary
+ http://knolleary.net
+ */
 
 #include "PubSubClient.h"
 #include "Arduino.h"
 
 PubSubClient::PubSubClient() {
-    this->_state = MQTT_DISCONNECTED;
-    this->_client = NULL;
-    this->stream = NULL;
-    setCallback(NULL);
-    this->bufferSize = 0;
-    setBufferSize(MQTT_MAX_PACKET_SIZE);
-    setKeepAlive(MQTT_KEEPALIVE);
-    setSocketTimeout(MQTT_SOCKET_TIMEOUT);
-}
-
-PubSubClient::PubSubClient(Client& client) {
-    this->_state = MQTT_DISCONNECTED;
-    setClient(client);
-    this->stream = NULL;
-    this->bufferSize = 0;
-    setBufferSize(MQTT_MAX_PACKET_SIZE);
-    setKeepAlive(MQTT_KEEPALIVE);
-    setSocketTimeout(MQTT_SOCKET_TIMEOUT);
-}
-
-PubSubClient::PubSubClient(IPAddress addr, uint16_t port, Client& client) {
-    this->_state = MQTT_DISCONNECTED;
-    setServer(addr, port);
-    setClient(client);
-    this->stream = NULL;
-    this->bufferSize = 0;
-    setBufferSize(MQTT_MAX_PACKET_SIZE);
-    setKeepAlive(MQTT_KEEPALIVE);
-    setSocketTimeout(MQTT_SOCKET_TIMEOUT);
-}
-PubSubClient::PubSubClient(IPAddress addr, uint16_t port, Client& client, Stream& stream) {
-    this->_state = MQTT_DISCONNECTED;
-    setServer(addr,port);
-    setClient(client);
-    setStream(stream);
-    this->bufferSize = 0;
-    setBufferSize(MQTT_MAX_PACKET_SIZE);
-    setKeepAlive(MQTT_KEEPALIVE);
-    setSocketTimeout(MQTT_SOCKET_TIMEOUT);
-}
-PubSubClient::PubSubClient(IPAddress addr, uint16_t port, MQTT_CALLBACK_SIGNATURE, Client& client) {
-    this->_state = MQTT_DISCONNECTED;
-    setServer(addr, port);
-    setCallback(callback);
-    setClient(client);
-    this->stream = NULL;
-    this->bufferSize = 0;
-    setBufferSize(MQTT_MAX_PACKET_SIZE);
-    setKeepAlive(MQTT_KEEPALIVE);
-    setSocketTimeout(MQTT_SOCKET_TIMEOUT);
-}
-PubSubClient::PubSubClient(IPAddress addr, uint16_t port, MQTT_CALLBACK_SIGNATURE, Client& client, Stream& stream) {
-    this->_state = MQTT_DISCONNECTED;
-    setServer(addr,port);
-    setCallback(callback);
-    setClient(client);
-    setStream(stream);
-    this->bufferSize = 0;
-    setBufferSize(MQTT_MAX_PACKET_SIZE);
-    setKeepAlive(MQTT_KEEPALIVE);
-    setSocketTimeout(MQTT_SOCKET_TIMEOUT);
-}
-
-PubSubClient::PubSubClient(uint8_t *ip, uint16_t port, Client& client) {
-    this->_state = MQTT_DISCONNECTED;
-    setServer(ip, port);
-    setClient(client);
-    this->stream = NULL;
-    this->bufferSize = 0;
-    setBufferSize(MQTT_MAX_PACKET_SIZE);
-    setKeepAlive(MQTT_KEEPALIVE);
-    setSocketTimeout(MQTT_SOCKET_TIMEOUT);
-}
-PubSubClient::PubSubClient(uint8_t *ip, uint16_t port, Client& client, Stream& stream) {
-    this->_state = MQTT_DISCONNECTED;
-    setServer(ip,port);
-    setClient(client);
-    setStream(stream);
-    this->bufferSize = 0;
-    setBufferSize(MQTT_MAX_PACKET_SIZE);
-    setKeepAlive(MQTT_KEEPALIVE);
-    setSocketTimeout(MQTT_SOCKET_TIMEOUT);
-}
-PubSubClient::PubSubClient(uint8_t *ip, uint16_t port, MQTT_CALLBACK_SIGNATURE, Client& client) {
-    this->_state = MQTT_DISCONNECTED;
-    setServer(ip, port);
-    setCallback(callback);
-    setClient(client);
-    this->stream = NULL;
-    this->bufferSize = 0;
-    setBufferSize(MQTT_MAX_PACKET_SIZE);
-    setKeepAlive(MQTT_KEEPALIVE);
-    setSocketTimeout(MQTT_SOCKET_TIMEOUT);
-}
-PubSubClient::PubSubClient(uint8_t *ip, uint16_t port, MQTT_CALLBACK_SIGNATURE, Client& client, Stream& stream) {
-    this->_state = MQTT_DISCONNECTED;
-    setServer(ip,port);
-    setCallback(callback);
-    setClient(client);
-    setStream(stream);
-    this->bufferSize = 0;
-    setBufferSize(MQTT_MAX_PACKET_SIZE);
-    setKeepAlive(MQTT_KEEPALIVE);
-    setSocketTimeout(MQTT_SOCKET_TIMEOUT);
-}
-
-PubSubClient::PubSubClient(const char* domain, uint16_t port, Client& client) {
-    this->_state = MQTT_DISCONNECTED;
-    setServer(domain,port);
-    setClient(client);
-    this->stream = NULL;
-    this->bufferSize = 0;
-    setBufferSize(MQTT_MAX_PACKET_SIZE);
-    setKeepAlive(MQTT_KEEPALIVE);
-    setSocketTimeout(MQTT_SOCKET_TIMEOUT);
-}
-PubSubClient::PubSubClient(const char* domain, uint16_t port, Client& client, Stream& stream) {
-    this->_state = MQTT_DISCONNECTED;
-    setServer(domain,port);
-    setClient(client);
-    setStream(stream);
-    this->bufferSize = 0;
-    setBufferSize(MQTT_MAX_PACKET_SIZE);
-    setKeepAlive(MQTT_KEEPALIVE);
-    setSocketTimeout(MQTT_SOCKET_TIMEOUT);
-}
-PubSubClient::PubSubClient(const char* domain, uint16_t port, MQTT_CALLBACK_SIGNATURE, Client& client) {
-    this->_state = MQTT_DISCONNECTED;
-    setServer(domain,port);
-    setCallback(callback);
-    setClient(client);
-    this->stream = NULL;
-    this->bufferSize = 0;
-    setBufferSize(MQTT_MAX_PACKET_SIZE);
-    setKeepAlive(MQTT_KEEPALIVE);
-    setSocketTimeout(MQTT_SOCKET_TIMEOUT);
-}
-PubSubClient::PubSubClient(const char* domain, uint16_t port, MQTT_CALLBACK_SIGNATURE, Client& client, Stream& stream) {
-    this->_state = MQTT_DISCONNECTED;
-    setServer(domain,port);
-    setCallback(callback);
-    setClient(client);
-    setStream(stream);
-    this->bufferSize = 0;
-    setBufferSize(MQTT_MAX_PACKET_SIZE);
-    setKeepAlive(MQTT_KEEPALIVE);
-    setSocketTimeout(MQTT_SOCKET_TIMEOUT);
+  this->_state = MQTT_DISCONNECTED;
+  this->_client = NULL;
+  this->stream = NULL;
+  setCallback(NULL);
+  this->bufferSize = 0;
+  setBufferSize(MQTT_MAX_PACKET_SIZE);
+  setKeepAlive(MQTT_KEEPALIVE);
+  setSocketTimeout(MQTT_SOCKET_TIMEOUT);
+}
+
+PubSubClient::PubSubClient(Client &client) {
+  this->_state = MQTT_DISCONNECTED;
+  setClient(client);
+  this->stream = NULL;
+  this->bufferSize = 0;
+  setBufferSize(MQTT_MAX_PACKET_SIZE);
+  setKeepAlive(MQTT_KEEPALIVE);
+  setSocketTimeout(MQTT_SOCKET_TIMEOUT);
+}
+
+PubSubClient::PubSubClient(IPAddress addr, uint16_t port, Client &client) {
+  this->_state = MQTT_DISCONNECTED;
+  setServer(addr, port);
+  setClient(client);
+  this->stream = NULL;
+  this->bufferSize = 0;
+  setBufferSize(MQTT_MAX_PACKET_SIZE);
+  setKeepAlive(MQTT_KEEPALIVE);
+  setSocketTimeout(MQTT_SOCKET_TIMEOUT);
+}
+PubSubClient::PubSubClient(IPAddress addr, uint16_t port, Client &client, Stream &stream) {
+  this->_state = MQTT_DISCONNECTED;
+  setServer(addr, port);
+  setClient(client);
+  setStream(stream);
+  this->bufferSize = 0;
+  setBufferSize(MQTT_MAX_PACKET_SIZE);
+  setKeepAlive(MQTT_KEEPALIVE);
+  setSocketTimeout(MQTT_SOCKET_TIMEOUT);
+}
+PubSubClient::PubSubClient(IPAddress addr, uint16_t port, MQTT_CALLBACK_SIGNATURE, Client &client) {
+  this->_state = MQTT_DISCONNECTED;
+  setServer(addr, port);
+  setCallback(callback);
+  setClient(client);
+  this->stream = NULL;
+  this->bufferSize = 0;
+  setBufferSize(MQTT_MAX_PACKET_SIZE);
+  setKeepAlive(MQTT_KEEPALIVE);
+  setSocketTimeout(MQTT_SOCKET_TIMEOUT);
+}
+PubSubClient::PubSubClient(IPAddress addr, uint16_t port, MQTT_CALLBACK_SIGNATURE, Client &client, Stream &stream) {
+  this->_state = MQTT_DISCONNECTED;
+  setServer(addr, port);
+  setCallback(callback);
+  setClient(client);
+  setStream(stream);
+  this->bufferSize = 0;
+  setBufferSize(MQTT_MAX_PACKET_SIZE);
+  setKeepAlive(MQTT_KEEPALIVE);
+  setSocketTimeout(MQTT_SOCKET_TIMEOUT);
+}
+
+PubSubClient::PubSubClient(uint8_t *ip, uint16_t port, Client &client) {
+  this->_state = MQTT_DISCONNECTED;
+  setServer(ip, port);
+  setClient(client);
+  this->stream = NULL;
+  this->bufferSize = 0;
+  setBufferSize(MQTT_MAX_PACKET_SIZE);
+  setKeepAlive(MQTT_KEEPALIVE);
+  setSocketTimeout(MQTT_SOCKET_TIMEOUT);
+}
+PubSubClient::PubSubClient(uint8_t *ip, uint16_t port, Client &client, Stream &stream) {
+  this->_state = MQTT_DISCONNECTED;
+  setServer(ip, port);
+  setClient(client);
+  setStream(stream);
+  this->bufferSize = 0;
+  setBufferSize(MQTT_MAX_PACKET_SIZE);
+  setKeepAlive(MQTT_KEEPALIVE);
+  setSocketTimeout(MQTT_SOCKET_TIMEOUT);
+}
+PubSubClient::PubSubClient(uint8_t *ip, uint16_t port, MQTT_CALLBACK_SIGNATURE, Client &client) {
+  this->_state = MQTT_DISCONNECTED;
+  setServer(ip, port);
+  setCallback(callback);
+  setClient(client);
+  this->stream = NULL;
+  this->bufferSize = 0;
+  setBufferSize(MQTT_MAX_PACKET_SIZE);
+  setKeepAlive(MQTT_KEEPALIVE);
+  setSocketTimeout(MQTT_SOCKET_TIMEOUT);
+}
+PubSubClient::PubSubClient(uint8_t *ip, uint16_t port, MQTT_CALLBACK_SIGNATURE, Client &client, Stream &stream) {
+  this->_state = MQTT_DISCONNECTED;
+  setServer(ip, port);
+  setCallback(callback);
+  setClient(client);
+  setStream(stream);
+  this->bufferSize = 0;
+  setBufferSize(MQTT_MAX_PACKET_SIZE);
+  setKeepAlive(MQTT_KEEPALIVE);
+  setSocketTimeout(MQTT_SOCKET_TIMEOUT);
+}
+
+PubSubClient::PubSubClient(const char *domain, uint16_t port, Client &client) {
+  this->_state = MQTT_DISCONNECTED;
+  setServer(domain, port);
+  setClient(client);
+  this->stream = NULL;
+  this->bufferSize = 0;
+  setBufferSize(MQTT_MAX_PACKET_SIZE);
+  setKeepAlive(MQTT_KEEPALIVE);
+  setSocketTimeout(MQTT_SOCKET_TIMEOUT);
+}
+PubSubClient::PubSubClient(const char *domain, uint16_t port, Client &client, Stream &stream) {
+  this->_state = MQTT_DISCONNECTED;
+  setServer(domain, port);
+  setClient(client);
+  setStream(stream);
+  this->bufferSize = 0;
+  setBufferSize(MQTT_MAX_PACKET_SIZE);
+  setKeepAlive(MQTT_KEEPALIVE);
+  setSocketTimeout(MQTT_SOCKET_TIMEOUT);
+}
+PubSubClient::PubSubClient(const char *domain, uint16_t port, MQTT_CALLBACK_SIGNATURE, Client &client) {
+  this->_state = MQTT_DISCONNECTED;
+  setServer(domain, port);
+  setCallback(callback);
+  setClient(client);
+  this->stream = NULL;
+  this->bufferSize = 0;
+  setBufferSize(MQTT_MAX_PACKET_SIZE);
+  setKeepAlive(MQTT_KEEPALIVE);
+  setSocketTimeout(MQTT_SOCKET_TIMEOUT);
+}
+PubSubClient::PubSubClient(const char *domain, uint16_t port, MQTT_CALLBACK_SIGNATURE, Client &client, Stream &stream) {
+  this->_state = MQTT_DISCONNECTED;
+  setServer(domain, port);
+  setCallback(callback);
+  setClient(client);
+  setStream(stream);
+  this->bufferSize = 0;
+  setBufferSize(MQTT_MAX_PACKET_SIZE);
+  setKeepAlive(MQTT_KEEPALIVE);
+  setSocketTimeout(MQTT_SOCKET_TIMEOUT);
 }
 
 PubSubClient::~PubSubClient() {
@@ -163,424 +163,431 @@ PubSubClient::~PubSubClient() {
 }
 
 boolean PubSubClient::connect(const char *id) {
-    return connect(id,NULL,NULL,0,0,0,0,1);
+  return connect(id, NULL, NULL, 0, 0, 0, 0, 1);
 }
 
 boolean PubSubClient::connect(const char *id, const char *user, const char *pass) {
-    return connect(id,user,pass,0,0,0,0,1);
+  return connect(id, user, pass, 0, 0, 0, 0, 1);
 }
 
-boolean PubSubClient::connect(const char *id, const char* willTopic, uint8_t willQos, boolean willRetain, const char* willMessage) {
-    return connect(id,NULL,NULL,willTopic,willQos,willRetain,willMessage,1);
+boolean PubSubClient::connect(const char *id, const char *willTopic, uint8_t willQos, boolean willRetain,
+    const char *willMessage) {
+  return connect(id, NULL, NULL, willTopic, willQos, willRetain, willMessage, 1);
 }
 
-boolean PubSubClient::connect(const char *id, const char *user, const char *pass, const char* willTopic, uint8_t willQos, boolean willRetain, const char* willMessage) {
-    return connect(id,user,pass,willTopic,willQos,willRetain,willMessage,1);
+boolean PubSubClient::connect(const char *id, const char *user, const char *pass, const char *willTopic,
+    uint8_t willQos, boolean willRetain, const char *willMessage) {
+  return connect(id, user, pass, willTopic, willQos, willRetain, willMessage, 1);
 }
 
-boolean PubSubClient::connect(const char *id, const char *user, const char *pass, const char* willTopic, uint8_t willQos, boolean willRetain, const char* willMessage, boolean cleanSession) {
-    if (!connected()) {
-        int result = 0;
+boolean PubSubClient::connect(const char *id, const char *user, const char *pass, const char *willTopic,
+    uint8_t willQos, boolean willRetain, const char *willMessage, boolean cleanSession) {
+  if (!connected()) {
+    int result = 0;
 
+    if (_client->connected()) {
+      result = 1;
+    } else {
+      if (domain != NULL) {
+        result = _client->connect(this->domain, this->port);
+      } else {
+        result = _client->connect(this->ip, this->port);
+      }
+    }
 
-        if(_client->connected()) {
-            result = 1;
-        } else {
-            if (domain != NULL) {
-                result = _client->connect(this->domain, this->port);
-            } else {
-                result = _client->connect(this->ip, this->port);
-            }
-        }
-
-        if (result == 1) {
-            nextMsgId = 1;
-            // Leave room in the buffer for header and variable length field
-            uint16_t length = MQTT_MAX_HEADER_SIZE;
-            unsigned int j;
+    if (result == 1) {
+      nextMsgId = 1;
+      // Leave room in the buffer for header and variable length field
+      uint16_t length = MQTT_MAX_HEADER_SIZE;
+      unsigned int j;
 
 #if MQTT_VERSION == MQTT_VERSION_3_1
             uint8_t d[9] = {0x00,0x06,'M','Q','I','s','d','p', MQTT_VERSION};
 #define MQTT_HEADER_VERSION_LENGTH 9
 #elif MQTT_VERSION == MQTT_VERSION_3_1_1
-            uint8_t d[7] = {0x00,0x04,'M','Q','T','T',MQTT_VERSION};
+      uint8_t d[7] = { 0x00, 0x04, 'M', 'Q', 'T', 'T', MQTT_VERSION };
 #define MQTT_HEADER_VERSION_LENGTH 7
 #endif
-            for (j = 0;j<MQTT_HEADER_VERSION_LENGTH;j++) {
-                this->buffer[length++] = d[j];
-            }
-
-            uint8_t v;
-            if (willTopic) {
-                v = 0x04|(willQos<<3)|(willRetain<<5);
-            } else {
-                v = 0x00;
-            }
-            if (cleanSession) {
-                v = v|0x02;
-            }
-
-            if(user != NULL) {
-                v = v|0x80;
-
-                if(pass != NULL) {
-                    v = v|(0x80>>1);
-                }
-            }
-            this->buffer[length++] = v;
-
-            this->buffer[length++] = ((this->keepAlive) >> 8);
-            this->buffer[length++] = ((this->keepAlive) & 0xFF);
-
-            CHECK_STRING_LENGTH(length,id)
-            length = writeString(id,this->buffer,length);
-            if (willTopic) {
-                CHECK_STRING_LENGTH(length,willTopic)
-                length = writeString(willTopic,this->buffer,length);
-                CHECK_STRING_LENGTH(length,willMessage)
-                length = writeString(willMessage,this->buffer,length);
-            }
-
-            if(user != NULL) {
-                CHECK_STRING_LENGTH(length,user)
-                length = writeString(user,this->buffer,length);
-                if(pass != NULL) {
-                    CHECK_STRING_LENGTH(length,pass)
-                    length = writeString(pass,this->buffer,length);
-                }
-            }
+      for (j = 0; j < MQTT_HEADER_VERSION_LENGTH; j++) {
+        this->buffer[length++] = d[j];
+      }
+
+      uint8_t v;
+      if (willTopic) {
+        v = 0x04 | (willQos << 3) | (willRetain << 5);
+      } else {
+        v = 0x00;
+      }
+      if (cleanSession) {
+        v = v | 0x02;
+      }
+
+      if (user != NULL) {
+        v = v | 0x80;
+
+        if (pass != NULL) {
+          v = v | (0x80 >> 1);
+        }
+      }
+      this->buffer[length++] = v;
+
+      this->buffer[length++] = ((this->keepAlive) >> 8);
+      this->buffer[length++] = ((this->keepAlive) & 0xFF);
+
+      CHECK_STRING_LENGTH(length, id)
+      length = writeString(id, this->buffer, length);
+      if (willTopic) {
+        CHECK_STRING_LENGTH(length, willTopic)
+        length = writeString(willTopic, this->buffer, length);
+        CHECK_STRING_LENGTH(length, willMessage)
+        length = writeString(willMessage, this->buffer, length);
+      }
+
+      if (user != NULL) {
+        CHECK_STRING_LENGTH(length, user)
+        length = writeString(user, this->buffer, length);
+        if (pass != NULL) {
+          CHECK_STRING_LENGTH(length, pass)
+          length = writeString(pass, this->buffer, length);
+        }
+      }
 
-            write(MQTTCONNECT,this->buffer,length-MQTT_MAX_HEADER_SIZE);
+      write(MQTTCONNECT, this->buffer, length - MQTT_MAX_HEADER_SIZE);
 
-            lastInActivity = lastOutActivity = millis();
+      lastInActivity = lastOutActivity = millis();
 
-            while (!_client->available()) {
-                unsigned long t = millis();
-                if (t-lastInActivity >= ((int32_t) this->socketTimeout*1000UL)) {
-                    _state = MQTT_CONNECTION_TIMEOUT;
-                    _client->stop();
-                    return false;
-                }
-            }
-            uint8_t llen;
-            uint32_t len = readPacket(&llen);
-
-            if (len == 4) {
-                if (buffer[3] == 0) {
-                    lastInActivity = millis();
-                    pingOutstanding = false;
-                    _state = MQTT_CONNECTED;
-                    return true;
-                } else {
-                    _state = buffer[3];
-                }
-            }
-            _client->stop();
+      while (!_client->available()) {
+        unsigned long t = millis();
+        if (t - lastInActivity >= ((int32_t) this->socketTimeout * 1000UL)) {
+          _state = MQTT_CONNECTION_TIMEOUT;
+          _client->stop();
+          return false;
+        }
+      }
+      uint8_t llen;
+      uint32_t len = readPacket(&llen);
+
+      if (len == 4) {
+        if (buffer[3] == 0) {
+          lastInActivity = millis();
+          pingOutstanding = false;
+          _state = MQTT_CONNECTED;
+          return true;
         } else {
-            _state = MQTT_CONNECT_FAILED;
+          _state = buffer[3];
         }
-        return false;
+      }
+      _client->stop();
+    } else {
+      _state = MQTT_CONNECT_FAILED;
     }
-    return true;
+    return false;
+  }
+  return true;
 }
 
 // reads a byte into result
-boolean PubSubClient::readByte(uint8_t * result) {
-   uint32_t previousMillis = millis();
-   while(!_client->available()) {
-     yield();
-     uint32_t currentMillis = millis();
-     if(currentMillis - previousMillis >= ((int32_t) this->socketTimeout * 1000)){
-       return false;
-     }
-   }
-   *result = _client->read();
-   return true;
+boolean PubSubClient::readByte(uint8_t *result) {
+  uint32_t previousMillis = millis();
+  while (!_client->available()) {
+    yield();
+    uint32_t currentMillis = millis();
+    if (currentMillis - previousMillis >= ((int32_t) this->socketTimeout * 1000)) {
+      return false;
+    }
+  }
+  *result = _client->read();
+  return true;
 }
 
 // reads a byte into result[*index] and increments index
-boolean PubSubClient::readByte(uint8_t * result, uint16_t * index){
+boolean PubSubClient::readByte(uint8_t *result, uint16_t *index) {
   uint16_t current_index = *index;
-  uint8_t * write_address = &(result[current_index]);
-  if(readByte(write_address)){
+  uint8_t *write_address = &(result[current_index]);
+  if (readByte(write_address)) {
     *index = current_index + 1;
     return true;
   }
   return false;
 }
 
-uint32_t PubSubClient::readPacket(uint8_t* lengthLength) {
-    uint16_t len = 0;
-    if(!readByte(this->buffer, &len)) return 0;
-    bool isPublish = (this->buffer[0]&0xF0) == MQTTPUBLISH;
-    uint32_t multiplier = 1;
-    uint32_t length = 0;
-    uint8_t digit = 0;
-    uint16_t skip = 0;
-    uint32_t start = 0;
-
-    do {
-        if (len == 5) {
-            // Invalid remaining length encoding - kill the connection
-            _state = MQTT_DISCONNECTED;
-            _client->stop();
-            return 0;
-        }
-        if(!readByte(&digit)) return 0;
-        this->buffer[len++] = digit;
-        length += (digit & 127) * multiplier;
-        multiplier <<=7; //multiplier *= 128
-    } while ((digit & 128) != 0);
-    *lengthLength = len-1;
-
-    if (isPublish) {
-        // Read in topic length to calculate bytes to skip over for Stream writing
-        if(!readByte(this->buffer, &len)) return 0;
-        if(!readByte(this->buffer, &len)) return 0;
-        skip = (this->buffer[*lengthLength+1]<<8)+this->buffer[*lengthLength+2];
-        start = 2;
-        if (this->buffer[0]&MQTTQOS1) {
-            // skip message id
-            skip += 2;
-        }
+uint32_t PubSubClient::readPacket(uint8_t *lengthLength) {
+  uint16_t len = 0;
+  if (!readByte(this->buffer, &len))
+    return 0;
+  bool isPublish = (this->buffer[0] & 0xF0) == MQTTPUBLISH;
+  uint32_t multiplier = 1;
+  uint32_t length = 0;
+  uint8_t digit = 0;
+  uint16_t skip = 0;
+  uint32_t start = 0;
+
+  do {
+    if (len == 5) {
+      // Invalid remaining length encoding - kill the connection
+      _state = MQTT_DISCONNECTED;
+      _client->stop();
+      return 0;
     }
-    uint32_t idx = len;
-
-    for (uint32_t i = start;i<length;i++) {
-        if(!readByte(&digit)) return 0;
-        if (this->stream) {
-            if (isPublish && idx-*lengthLength-2>skip) {
-                this->stream->write(digit);
-            }
-        }
-
-        if (len < this->bufferSize) {
-            this->buffer[len] = digit;
-            len++;
-        }
-        idx++;
+    if (!readByte(&digit))
+      return 0;
+    this->buffer[len++] = digit;
+    length += (digit & 127) * multiplier;
+    multiplier <<= 7; //multiplier *= 128
+  } while ((digit & 128) != 0);
+  *lengthLength = len - 1;
+
+  if (isPublish) {
+    // Read in topic length to calculate bytes to skip over for Stream writing
+    if (!readByte(this->buffer, &len))
+      return 0;
+    if (!readByte(this->buffer, &len))
+      return 0;
+    skip = (this->buffer[*lengthLength + 1] << 8) + this->buffer[*lengthLength + 2];
+    start = 2;
+    if (this->buffer[0] & MQTTQOS1) {
+      // skip message id
+      skip += 2;
+    }
+  }
+  uint32_t idx = len;
+
+  for (uint32_t i = start; i < length; i++) {
+    if (!readByte(&digit))
+      return 0;
+    if (this->stream) {
+      if (isPublish && idx - *lengthLength - 2 > skip) {
+        this->stream->write(digit);
+      }
     }
 
-    if (!this->stream && idx > this->bufferSize) {
-        len = 0; // This will cause the packet to be ignored.
+    if (len < this->bufferSize) {
+      this->buffer[len] = digit;
+      len++;
     }
-    return len;
+    idx++;
+  }
+
+  if (!this->stream && idx > this->bufferSize) {
+    len = 0; // This will cause the packet to be ignored.
+  }
+  return len;
 }
 
 boolean PubSubClient::loop() {
-    if (connected()) {
-        unsigned long t = millis();
-        if ((t - lastInActivity > this->keepAlive*1000UL) || (t - lastOutActivity > this->keepAlive*1000UL)) {
-            if (pingOutstanding) {
-                this->_state = MQTT_CONNECTION_TIMEOUT;
-                _client->stop();
-                return false;
+  if (connected()) {
+    unsigned long t = millis();
+    if ((t - lastInActivity > this->keepAlive * 1000UL) || (t - lastOutActivity > this->keepAlive * 1000UL)) {
+      if (pingOutstanding) {
+        this->_state = MQTT_CONNECTION_TIMEOUT;
+        _client->stop();
+        return false;
+      } else {
+        this->buffer[0] = MQTTPINGREQ;
+        this->buffer[1] = 0;
+        _client->write(this->buffer, 2);
+        lastOutActivity = t;
+        lastInActivity = t;
+        pingOutstanding = true;
+      }
+    }
+    if (_client->available()) {
+      uint8_t llen;
+      uint16_t len = readPacket(&llen);
+      uint16_t msgId = 0;
+      uint8_t *payload;
+      if (len > 0) {
+        lastInActivity = t;
+        uint8_t type = this->buffer[0] & 0xF0;
+        if (type == MQTTPUBLISH) {
+          if (callback) {
+            uint16_t tl = (this->buffer[llen + 1] << 8) + this->buffer[llen + 2]; /* topic length in bytes */
+            memmove(this->buffer + llen + 2, this->buffer + llen + 3, tl); /* move topic inside buffer 1 byte to front */
+            this->buffer[llen + 2 + tl] = 0; /* end the topic as a 'C' string with \x00 */
+            char *topic = (char*) this->buffer + llen + 2;
+            // msgId only present for QOS>0
+            if ((this->buffer[0] & 0x06) == MQTTQOS1) {
+              msgId = (this->buffer[llen + 3 + tl] << 8) + this->buffer[llen + 3 + tl + 1];
+              payload = this->buffer + llen + 3 + tl + 2;
+              callback(topic, payload, len - llen - 3 - tl - 2);
+
+              this->buffer[0] = MQTTPUBACK;
+              this->buffer[1] = 2;
+              this->buffer[2] = (msgId >> 8);
+              this->buffer[3] = (msgId & 0xFF);
+              _client->write(this->buffer, 4);
+              lastOutActivity = t;
+
             } else {
-                this->buffer[0] = MQTTPINGREQ;
-                this->buffer[1] = 0;
-                _client->write(this->buffer,2);
-                lastOutActivity = t;
-                lastInActivity = t;
-                pingOutstanding = true;
-            }
-        }
-        if (_client->available()) {
-            uint8_t llen;
-            uint16_t len = readPacket(&llen);
-            uint16_t msgId = 0;
-            uint8_t *payload;
-            if (len > 0) {
-                lastInActivity = t;
-                uint8_t type = this->buffer[0]&0xF0;
-                if (type == MQTTPUBLISH) {
-                    if (callback) {
-                        uint16_t tl = (this->buffer[llen+1]<<8)+this->buffer[llen+2]; /* topic length in bytes */
-                        memmove(this->buffer+llen+2,this->buffer+llen+3,tl); /* move topic inside buffer 1 byte to front */
-                        this->buffer[llen+2+tl] = 0; /* end the topic as a 'C' string with \x00 */
-                        char *topic = (char*) this->buffer+llen+2;
-                        // msgId only present for QOS>0
-                        if ((this->buffer[0]&0x06) == MQTTQOS1) {
-                            msgId = (this->buffer[llen+3+tl]<<8)+this->buffer[llen+3+tl+1];
-                            payload = this->buffer+llen+3+tl+2;
-                            callback(topic,payload,len-llen-3-tl-2);
-
-                            this->buffer[0] = MQTTPUBACK;
-                            this->buffer[1] = 2;
-                            this->buffer[2] = (msgId >> 8);
-                            this->buffer[3] = (msgId & 0xFF);
-                            _client->write(this->buffer,4);
-                            lastOutActivity = t;
-
-                        } else {
-                            payload = this->buffer+llen+3+tl;
-                            callback(topic,payload,len-llen-3-tl);
-                        }
-                    }
-                } else if (type == MQTTPINGREQ) {
-                    this->buffer[0] = MQTTPINGRESP;
-                    this->buffer[1] = 0;
-                    _client->write(this->buffer,2);
-                } else if (type == MQTTPINGRESP) {
-                    pingOutstanding = false;
-                }
-            } else if (!connected()) {
-                // readPacket has closed the connection
-                return false;
+              payload = this->buffer + llen + 3 + tl;
+              callback(topic, payload, len - llen - 3 - tl);
             }
+          }
+        } else if (type == MQTTPINGREQ) {
+          this->buffer[0] = MQTTPINGRESP;
+          this->buffer[1] = 0;
+          _client->write(this->buffer, 2);
+        } else if (type == MQTTPINGRESP) {
+          pingOutstanding = false;
         }
-        return true;
+      } else if (!connected()) {
+        // readPacket has closed the connection
+        return false;
+      }
     }
-    return false;
+    return true;
+  }
+  return false;
 }
 
-boolean PubSubClient::publish(const char* topic, const char* payload) {
-    return publish(topic,(const uint8_t*)payload, payload ? strnlen(payload, this->bufferSize) : 0,false);
+boolean PubSubClient::publish(const char *topic, const char *payload) {
+  return publish(topic, (const uint8_t*) payload, payload ? strnlen(payload, this->bufferSize) : 0, false);
 }
 
-boolean PubSubClient::publish(const char* topic, const char* payload, boolean retained) {
-    return publish(topic,(const uint8_t*)payload, payload ? strnlen(payload, this->bufferSize) : 0,retained);
+boolean PubSubClient::publish(const char *topic, const char *payload, boolean retained) {
+  return publish(topic, (const uint8_t*) payload, payload ? strnlen(payload, this->bufferSize) : 0, retained);
 }
 
-boolean PubSubClient::publish(const char* topic, const uint8_t* payload, unsigned int plength) {
-    return publish(topic, payload, plength, false);
+boolean PubSubClient::publish(const char *topic, const uint8_t *payload, unsigned int plength) {
+  return publish(topic, payload, plength, false);
 }
 
-boolean PubSubClient::publish(const char* topic, const uint8_t* payload, unsigned int plength, boolean retained) {
-    if (connected()) {
-        if (this->bufferSize < MQTT_MAX_HEADER_SIZE + 2+strnlen(topic, this->bufferSize) + plength) {
-            // Too long
-            return false;
-        }
-        // Leave room in the buffer for header and variable length field
-        uint16_t length = MQTT_MAX_HEADER_SIZE;
-        length = writeString(topic,this->buffer,length);
-
-        // Add payload
-        uint16_t i;
-        for (i=0;i<plength;i++) {
-            this->buffer[length++] = payload[i];
-        }
+boolean PubSubClient::publish(const char *topic, const uint8_t *payload, unsigned int plength, boolean retained) {
+  if (connected()) {
+    if (this->bufferSize < MQTT_MAX_HEADER_SIZE + 2 + strnlen(topic, this->bufferSize) + plength) {
+      // Too long
+      return false;
+    }
+    // Leave room in the buffer for header and variable length field
+    uint16_t length = MQTT_MAX_HEADER_SIZE;
+    length = writeString(topic, this->buffer, length);
+
+    // Add payload
+    uint16_t i;
+    for (i = 0; i < plength; i++) {
+      this->buffer[length++] = payload[i];
+    }
 
-        // Write the header
-        uint8_t header = MQTTPUBLISH;
-        if (retained) {
-            header |= 1;
-        }
-        return write(header,this->buffer,length-MQTT_MAX_HEADER_SIZE);
+    // Write the header
+    uint8_t header = MQTTPUBLISH;
+    if (retained) {
+      header |= 1;
     }
-    return false;
+    return write(header, this->buffer, length - MQTT_MAX_HEADER_SIZE);
+  }
+  return false;
 }
 
-boolean PubSubClient::publish_P(const char* topic, const char* payload, boolean retained) {
-    return publish_P(topic, (const uint8_t*)payload, payload ? strnlen(payload, this->bufferSize) : 0, retained);
+boolean PubSubClient::publish_P(const char *topic, const char *payload, boolean retained) {
+  return publish_P(topic, (const uint8_t*) payload, payload ? strnlen(payload, this->bufferSize) : 0, retained);
 }
 
-boolean PubSubClient::publish_P(const char* topic, const uint8_t* payload, unsigned int plength, boolean retained) {
-    uint8_t llen = 0;
-    uint8_t digit;
-    unsigned int rc = 0;
-    uint16_t tlen;
-    unsigned int pos = 0;
-    unsigned int i;
-    uint8_t header;
-    unsigned int len;
-    int expectedLength;
+boolean PubSubClient::publish_P(const char *topic, const uint8_t *payload, unsigned int plength, boolean retained) {
+  uint8_t llen = 0;
+  uint8_t digit;
+  unsigned int rc = 0;
+  uint16_t tlen;
+  unsigned int pos = 0;
+  unsigned int i;
+  uint8_t header;
+  unsigned int len;
+  uint32_t expectedLength;
 
-    if (!connected()) {
-        return false;
-    }
+  if (!connected()) {
+    return false;
+  }
 
-    tlen = strnlen(topic, this->bufferSize);
+  tlen = strnlen(topic, this->bufferSize);
 
-    header = MQTTPUBLISH;
-    if (retained) {
-        header |= 1;
+  header = MQTTPUBLISH;
+  if (retained) {
+    header |= 1;
+  }
+  this->buffer[pos++] = header;
+  len = plength + 2 + tlen;
+  do {
+    digit = len & 127; //digit = len %128
+    len >>= 7; //len = len / 128
+    if (len > 0) {
+      digit |= 0x80;
     }
-    this->buffer[pos++] = header;
-    len = plength + 2 + tlen;
-    do {
-        digit = len  & 127; //digit = len %128
-        len >>= 7; //len = len / 128
-        if (len > 0) {
-            digit |= 0x80;
-        }
-        this->buffer[pos++] = digit;
-        llen++;
-    } while(len>0);
+    this->buffer[pos++] = digit;
+    llen++;
+  } while (len > 0);
 
-    pos = writeString(topic,this->buffer,pos);
+  pos = writeString(topic, this->buffer, pos);
 
-    rc += _client->write(this->buffer,pos);
+  rc += _client->write(this->buffer, pos);
 
-    for (i=0;i<plength;i++) {
-        rc += _client->write((char)pgm_read_byte_near(payload + i));
-    }
+  for (i = 0; i < plength; i++) {
+    rc += _client->write((char) pgm_read_byte_near(payload + i));
+  }
 
-    lastOutActivity = millis();
+  lastOutActivity = millis();
 
-    expectedLength = 1 + llen + 2 + tlen + plength;
+  expectedLength = 1 + llen + 2 + tlen + plength;
 
-    return (rc == expectedLength);
+  return (rc == expectedLength);
 }
 
-boolean PubSubClient::beginPublish(const char* topic, unsigned int plength, boolean retained) {
-    if (connected()) {
-        // Send the header and variable length field
-        uint16_t length = MQTT_MAX_HEADER_SIZE;
-        length = writeString(topic,this->buffer,length);
-        uint8_t header = MQTTPUBLISH;
-        if (retained) {
-            header |= 1;
-        }
-        size_t hlen = buildHeader(header, this->buffer, plength+length-MQTT_MAX_HEADER_SIZE);
-        uint16_t rc = _client->write(this->buffer+(MQTT_MAX_HEADER_SIZE-hlen),length-(MQTT_MAX_HEADER_SIZE-hlen));
-        lastOutActivity = millis();
-        return (rc == (length-(MQTT_MAX_HEADER_SIZE-hlen)));
+boolean PubSubClient::beginPublish(const char *topic, unsigned int plength, boolean retained) {
+  if (connected()) {
+    // Send the header and variable length field
+    uint16_t length = MQTT_MAX_HEADER_SIZE;
+    length = writeString(topic, this->buffer, length);
+    uint8_t header = MQTTPUBLISH;
+    if (retained) {
+      header |= 1;
     }
-    return false;
+    size_t hlen = buildHeader(header, this->buffer, plength + length - MQTT_MAX_HEADER_SIZE);
+    uint16_t rc = _client->write(this->buffer + (MQTT_MAX_HEADER_SIZE - hlen), length - (MQTT_MAX_HEADER_SIZE - hlen));
+    lastOutActivity = millis();
+    return (rc == (length - (MQTT_MAX_HEADER_SIZE - hlen)));
+  }
+  return false;
 }
 
 int PubSubClient::endPublish() {
- return 1;
+  return 1;
 }
 
 size_t PubSubClient::write(uint8_t data) {
-    lastOutActivity = millis();
-    return _client->write(data);
+  lastOutActivity = millis();
+  return _client->write(data);
 }
 
 size_t PubSubClient::write(const uint8_t *buffer, size_t size) {
-    lastOutActivity = millis();
-    return _client->write(buffer,size);
-}
-
-size_t PubSubClient::buildHeader(uint8_t header, uint8_t* buf, uint16_t length) {
-    uint8_t lenBuf[4];
-    uint8_t llen = 0;
-    uint8_t digit;
-    uint8_t pos = 0;
-    uint16_t len = length;
-    do {
-
-        digit = len  & 127; //digit = len %128
-        len >>= 7; //len = len / 128
-        if (len > 0) {
-            digit |= 0x80;
-        }
-        lenBuf[pos++] = digit;
-        llen++;
-    } while(len>0);
-
-    buf[4-llen] = header;
-    for (int i=0;i<llen;i++) {
-        buf[MQTT_MAX_HEADER_SIZE-llen+i] = lenBuf[i];
+  lastOutActivity = millis();
+  return _client->write(buffer, size);
+}
+
+size_t PubSubClient::buildHeader(uint8_t header, uint8_t *buf, uint16_t length) {
+  uint8_t lenBuf[4];
+  uint8_t llen = 0;
+  uint8_t digit;
+  uint8_t pos = 0;
+  uint16_t len = length;
+  do {
+
+    digit = len & 127; //digit = len %128
+    len >>= 7; //len = len / 128
+    if (len > 0) {
+      digit |= 0x80;
     }
-    return llen+1; // Full header size is variable length bit plus the 1-byte fixed header
+    lenBuf[pos++] = digit;
+    llen++;
+  } while (len > 0);
+
+  buf[4 - llen] = header;
+  for (int i = 0; i < llen; i++) {
+    buf[MQTT_MAX_HEADER_SIZE - llen + i] = lenBuf[i];
+  }
+  return llen + 1; // Full header size is variable length bit plus the 1-byte fixed header
 }
 
-boolean PubSubClient::write(uint8_t header, uint8_t* buf, uint16_t length) {
-    uint16_t rc;
-    uint8_t hlen = buildHeader(header, buf, length);
+boolean PubSubClient::write(uint8_t header, uint8_t *buf, uint16_t length) {
+  uint16_t rc;
+  uint8_t hlen = buildHeader(header, buf, length);
 
 #ifdef MQTT_MAX_TRANSFER_SIZE
     uint8_t* writeBuf = buf+(MQTT_MAX_HEADER_SIZE-hlen);
@@ -596,174 +603,173 @@ boolean PubSubClient::write(uint8_t header, uint8_t* buf, uint16_t length) {
     }
     return result;
 #else
-    rc = _client->write(buf+(MQTT_MAX_HEADER_SIZE-hlen),length+hlen);
-    lastOutActivity = millis();
-    return (rc == hlen+length);
+  rc = _client->write(buf + (MQTT_MAX_HEADER_SIZE - hlen), length + hlen);
+  lastOutActivity = millis();
+  return (rc == hlen + length);
 #endif
 }
 
-boolean PubSubClient::subscribe(const char* topic) {
-    return subscribe(topic, 0);
+boolean PubSubClient::subscribe(const char *topic) {
+  return subscribe(topic, 0);
 }
 
-boolean PubSubClient::subscribe(const char* topic, uint8_t qos) {
-    size_t topicLength = strnlen(topic, this->bufferSize);
-    if (topic == 0) {
-        return false;
-    }
-    if (qos > 1) {
-        return false;
-    }
-    if (this->bufferSize < 9 + topicLength) {
-        // Too long
-        return false;
-    }
-    if (connected()) {
-        // Leave room in the buffer for header and variable length field
-        uint16_t length = MQTT_MAX_HEADER_SIZE;
-        nextMsgId++;
-        if (nextMsgId == 0) {
-            nextMsgId = 1;
-        }
-        this->buffer[length++] = (nextMsgId >> 8);
-        this->buffer[length++] = (nextMsgId & 0xFF);
-        length = writeString((char*)topic, this->buffer,length);
-        this->buffer[length++] = qos;
-        return write(MQTTSUBSCRIBE|MQTTQOS1,this->buffer,length-MQTT_MAX_HEADER_SIZE);
-    }
+boolean PubSubClient::subscribe(const char *topic, uint8_t qos) {
+  size_t topicLength = strnlen(topic, this->bufferSize);
+  if (topic == 0) {
+    return false;
+  }
+  if (qos > 1) {
     return false;
+  }
+  if (this->bufferSize < 9 + topicLength) {
+    // Too long
+    return false;
+  }
+  if (connected()) {
+    // Leave room in the buffer for header and variable length field
+    uint16_t length = MQTT_MAX_HEADER_SIZE;
+    nextMsgId++;
+    if (nextMsgId == 0) {
+      nextMsgId = 1;
+    }
+    this->buffer[length++] = (nextMsgId >> 8);
+    this->buffer[length++] = (nextMsgId & 0xFF);
+    length = writeString((char*) topic, this->buffer, length);
+    this->buffer[length++] = qos;
+    return write(MQTTSUBSCRIBE | MQTTQOS1, this->buffer, length - MQTT_MAX_HEADER_SIZE);
+  }
+  return false;
 }
 
-boolean PubSubClient::unsubscribe(const char* topic) {
-	size_t topicLength = strnlen(topic, this->bufferSize);
-    if (topic == 0) {
-        return false;
-    }
-    if (this->bufferSize < 9 + topicLength) {
-        // Too long
-        return false;
-    }
-    if (connected()) {
-        uint16_t length = MQTT_MAX_HEADER_SIZE;
-        nextMsgId++;
-        if (nextMsgId == 0) {
-            nextMsgId = 1;
-        }
-        this->buffer[length++] = (nextMsgId >> 8);
-        this->buffer[length++] = (nextMsgId & 0xFF);
-        length = writeString(topic, this->buffer,length);
-        return write(MQTTUNSUBSCRIBE|MQTTQOS1,this->buffer,length-MQTT_MAX_HEADER_SIZE);
-    }
+boolean PubSubClient::unsubscribe(const char *topic) {
+  size_t topicLength = strnlen(topic, this->bufferSize);
+  if (topic == 0) {
     return false;
+  }
+  if (this->bufferSize < 9 + topicLength) {
+    // Too long
+    return false;
+  }
+  if (connected()) {
+    uint16_t length = MQTT_MAX_HEADER_SIZE;
+    nextMsgId++;
+    if (nextMsgId == 0) {
+      nextMsgId = 1;
+    }
+    this->buffer[length++] = (nextMsgId >> 8);
+    this->buffer[length++] = (nextMsgId & 0xFF);
+    length = writeString(topic, this->buffer, length);
+    return write(MQTTUNSUBSCRIBE | MQTTQOS1, this->buffer, length - MQTT_MAX_HEADER_SIZE);
+  }
+  return false;
 }
 
 void PubSubClient::disconnect() {
-    this->buffer[0] = MQTTDISCONNECT;
-    this->buffer[1] = 0;
-    _client->write(this->buffer,2);
-    _state = MQTT_DISCONNECTED;
-    _client->flush();
-    _client->stop();
-    lastInActivity = lastOutActivity = millis();
-}
-
-uint16_t PubSubClient::writeString(const char* string, uint8_t* buf, uint16_t pos) {
-    const char* idp = string;
-    uint16_t i = 0;
-    pos += 2;
-    while (*idp) {
-        buf[pos++] = *idp++;
-        i++;
-    }
-    buf[pos-i-2] = (i >> 8);
-    buf[pos-i-1] = (i & 0xFF);
-    return pos;
+  this->buffer[0] = MQTTDISCONNECT;
+  this->buffer[1] = 0;
+  _client->write(this->buffer, 2);
+  _state = MQTT_DISCONNECTED;
+  _client->flush();
+  _client->stop();
+  lastInActivity = lastOutActivity = millis();
+}
+
+uint16_t PubSubClient::writeString(const char *string, uint8_t *buf, uint16_t pos) {
+  const char *idp = string;
+  uint16_t i = 0;
+  pos += 2;
+  while (*idp) {
+    buf[pos++] = *idp++;
+    i++;
+  }
+  buf[pos - i - 2] = (i >> 8);
+  buf[pos - i - 1] = (i & 0xFF);
+  return pos;
 }
 
-
 boolean PubSubClient::connected() {
-    boolean rc;
-    if (_client == NULL ) {
-        rc = false;
+  boolean rc;
+  if (_client == NULL) {
+    rc = false;
+  } else {
+    rc = (int) _client->connected();
+    if (!rc) {
+      if (this->_state == MQTT_CONNECTED) {
+        this->_state = MQTT_CONNECTION_LOST;
+        _client->flush();
+        _client->stop();
+      }
     } else {
-        rc = (int)_client->connected();
-        if (!rc) {
-            if (this->_state == MQTT_CONNECTED) {
-                this->_state = MQTT_CONNECTION_LOST;
-                _client->flush();
-                _client->stop();
-            }
-        } else {
-            return this->_state == MQTT_CONNECTED;
-        }
+      return this->_state == MQTT_CONNECTED;
     }
-    return rc;
+  }
+  return rc;
 }
 
-PubSubClient& PubSubClient::setServer(uint8_t * ip, uint16_t port) {
-    IPAddress addr(ip[0],ip[1],ip[2],ip[3]);
-    return setServer(addr,port);
+PubSubClient& PubSubClient::setServer(uint8_t *ip, uint16_t port) {
+  IPAddress addr(ip[0], ip[1], ip[2], ip[3]);
+  return setServer(addr, port);
 }
 
 PubSubClient& PubSubClient::setServer(IPAddress ip, uint16_t port) {
-    this->ip = ip;
-    this->port = port;
-    this->domain = NULL;
-    return *this;
+  this->ip = ip;
+  this->port = port;
+  this->domain = NULL;
+  return *this;
 }
 
-PubSubClient& PubSubClient::setServer(const char * domain, uint16_t port) {
-    this->domain = domain;
-    this->port = port;
-    return *this;
+PubSubClient& PubSubClient::setServer(const char *domain, uint16_t port) {
+  this->domain = domain;
+  this->port = port;
+  return *this;
 }
 
 PubSubClient& PubSubClient::setCallback(MQTT_CALLBACK_SIGNATURE) {
-    this->callback = callback;
-    return *this;
+  this->callback = callback;
+  return *this;
 }
 
-PubSubClient& PubSubClient::setClient(Client& client){
-    this->_client = &client;
-    return *this;
+PubSubClient& PubSubClient::setClient(Client &client) {
+  this->_client = &client;
+  return *this;
 }
 
-PubSubClient& PubSubClient::setStream(Stream& stream){
-    this->stream = &stream;
-    return *this;
+PubSubClient& PubSubClient::setStream(Stream &stream) {
+  this->stream = &stream;
+  return *this;
 }
 
 int PubSubClient::state() {
-    return this->_state;
+  return this->_state;
 }
 
 boolean PubSubClient::setBufferSize(uint16_t size) {
-    if (size == 0) {
-        // Cannot set it back to 0
-        return false;
-    }
-    if (this->bufferSize == 0) {
-        this->buffer = (uint8_t*)malloc(size);
+  if (size == 0) {
+    // Cannot set it back to 0
+    return false;
+  }
+  if (this->bufferSize == 0) {
+    this->buffer = (uint8_t*) malloc(size);
+  } else {
+    uint8_t *newBuffer = (uint8_t*) realloc(this->buffer, size);
+    if (newBuffer != NULL) {
+      this->buffer = newBuffer;
     } else {
-        uint8_t* newBuffer = (uint8_t*)realloc(this->buffer, size);
-        if (newBuffer != NULL) {
-            this->buffer = newBuffer;
-        } else {
-            return false;
-        }
+      return false;
     }
-    this->bufferSize = size;
-    return (this->buffer != NULL);
+  }
+  this->bufferSize = size;
+  return (this->buffer != NULL);
 }
 
 uint16_t PubSubClient::getBufferSize() {
-    return this->bufferSize;
+  return this->bufferSize;
 }
 PubSubClient& PubSubClient::setKeepAlive(uint16_t keepAlive) {
-    this->keepAlive = keepAlive;
-    return *this;
+  this->keepAlive = keepAlive;
+  return *this;
 }
 PubSubClient& PubSubClient::setSocketTimeout(uint16_t timeout) {
-    this->socketTimeout = timeout;
-    return *this;
+  this->socketTimeout = timeout;
+  return *this;
 }
diff --git a/ampel-firmware/src/lib/SparkFun_SCD30_Arduino_Library/keywords.txt b/ampel-firmware/src/lib/SparkFun_SCD30_Arduino_Library/keywords.txt
index 7dbe45dde02b8e487f4618f845ea85829abc8fdd..e1a66d76d114097d56bcaa2596420b5e835c272b 100644
--- a/ampel-firmware/src/lib/SparkFun_SCD30_Arduino_Library/keywords.txt
+++ b/ampel-firmware/src/lib/SparkFun_SCD30_Arduino_Library/keywords.txt
@@ -14,25 +14,34 @@ SCD30	KEYWORD1
 
 SCD30	KEYWORD2
 begin	KEYWORD2
+isConnected	KEYWORD2
 enableDebugging	KEYWORD2
 beginMeasuring	KEYWORD2
 StopMeasurement	KEYWORD2
+
+setAmbientPressure	KEYWORD2
+
 getSettingValue	KEYWORD2
-getForcedRecalibration	KEYWORD2
-getMeasurementInterval	KEYWORD2
-getTemperatureOffset	KEYWORD2
-getAltitudeCompensation	KEYWORD2
 getFirmwareVersion	KEYWORD2
 getCO2	KEYWORD2
 getHumidity	KEYWORD2
 getTemperature	KEYWORD2
+
+getMeasurementInterval	KEYWORD2
 setMeasurementInterval	KEYWORD2
-setAmbientPressure	KEYWORD2
+
+getAltitudeCompensation	KEYWORD2
 setAltitudeCompensation	KEYWORD2
+
+getAutoSelfCalibration	KEYWORD2
 setAutoSelfCalibration	KEYWORD2
+
+getForcedRecalibration	KEYWORD2
 setForcedRecalibrationFactor	KEYWORD2
+
+getTemperatureOffset	KEYWORD2
 setTemperatureOffset	KEYWORD2
-getAutoSelfCalibration	KEYWORD2
+
 dataAvailable	KEYWORD2
 readMeasurement	KEYWORD2
 reset	KEYWORD2
diff --git a/ampel-firmware/src/lib/SparkFun_SCD30_Arduino_Library/library.properties b/ampel-firmware/src/lib/SparkFun_SCD30_Arduino_Library/library.properties
index 1e004493e332a8dcc2af1dce00ee7aab8e3bdc72..be9ed522d96ab108cbb62a52e4544098f5ea7a39 100644
--- a/ampel-firmware/src/lib/SparkFun_SCD30_Arduino_Library/library.properties
+++ b/ampel-firmware/src/lib/SparkFun_SCD30_Arduino_Library/library.properties
@@ -1,5 +1,5 @@
 name=SparkFun SCD30 Arduino Library
-version=1.0.13
+version=1.0.17
 author=SparkFun Electronics
 maintainer=SparkFun Electronics <sparkfun.com>
 sentence=Library for the Sensirion SCD30 CO2 Sensor
diff --git a/ampel-firmware/src/lib/SparkFun_SCD30_Arduino_Library/src/SparkFun_SCD30_Arduino_Library.cpp b/ampel-firmware/src/lib/SparkFun_SCD30_Arduino_Library/src/SparkFun_SCD30_Arduino_Library.cpp
index 3d4ed4558b8e321a5308c9f195212e2382ac0e63..f83746fb0fd1c4c6606d36289f2b0d5b22122b49 100644
--- a/ampel-firmware/src/lib/SparkFun_SCD30_Arduino_Library/src/SparkFun_SCD30_Arduino_Library.cpp
+++ b/ampel-firmware/src/lib/SparkFun_SCD30_Arduino_Library/src/SparkFun_SCD30_Arduino_Library.cpp
@@ -7,9 +7,9 @@
   Written by Nathan Seidle @ SparkFun Electronics, May 22nd, 2018
 
   Updated February 1st 2021 to include some of the features of paulvha's version of the library
-	(while maintaining backward-compatibility):
-	https://github.com/paulvha/scd30
-	Thank you Paul!
+  (while maintaining backward-compatibility):
+  https://github.com/paulvha/scd30
+  Thank you Paul!
 
   The SCD30 measures CO2 with accuracy of +/- 30ppm.
 
@@ -32,14 +32,14 @@ SCD30::SCD30(void)
   // Constructor
 }
 
-//Initialize the Serial port
+// Initialize the Serial port
 #ifdef USE_TEENSY3_I2C_LIB
 bool SCD30::begin(i2c_t3 &wirePort, bool autoCalibrate, bool measBegin)
 #else
 bool SCD30::begin(TwoWire &wirePort, bool autoCalibrate, bool measBegin)
 #endif
 {
-  _i2cPort = &wirePort; //Grab which port the user wants us to use
+  _i2cPort = &wirePort; // Grab which port the user wants us to use
 
   /* Especially during obtaining the ACK BIT after a byte sent the SCD30 is using clock stretching  (but NOT only there)!
    * The need for clock stretching is described in the Sensirion_CO2_Sensors_SCD30_Interface_Description.pdf
@@ -58,128 +58,153 @@ bool SCD30::begin(TwoWire &wirePort, bool autoCalibrate, bool measBegin)
   _i2cPort->setClockStretchLimit(200000);
 #endif
 
-  uint16_t fwVer;
-  if (getFirmwareVersion(&fwVer) == false) // Read the firmware version. Return false if the CRC check fails.
+  if (isConnected() == false)
     return (false);
 
-  if (_printDebug == true)
-  {
-    _debugPort->print(F("SCD30 begin: got firmware version 0x"));
-    _debugPort->println(fwVer, HEX);
-  }
-
   if (measBegin == false) // Exit now if measBegin is false
     return (true);
 
-  //Check for device to respond correctly
-  if (beginMeasuring() == true) //Start continuous measurements
+  // Check for device to respond correctly
+  if (beginMeasuring() == true) // Start continuous measurements
   {
-    setMeasurementInterval(2);    //2 seconds between measurements
-    setAutoSelfCalibration(autoCalibrate); //Enable auto-self-calibration
+    setMeasurementInterval(2);             // 2 seconds between measurements
+    setAutoSelfCalibration(autoCalibrate); // Enable auto-self-calibration
 
     return (true);
   }
 
-  return (false); //Something went wrong
+  return (false); // Something went wrong
+}
+
+// Returns true if device responds to a firmware request
+bool SCD30::isConnected()
+{
+  uint16_t fwVer;
+  if (getFirmwareVersion(&fwVer) == false) // Read the firmware version. Return false if the CRC check fails.
+    return (false);
+
+  if (_printDebug == true)
+  {
+    _debugPort->print(F("Firmware version 0x"));
+    _debugPort->println(fwVer, HEX);
+  }
+
+  return (true);
 }
 
-//Calling this function with nothing sets the debug port to Serial
-//You can also call it with other streams like Serial1, SerialUSB, etc.
+// Calling this function with nothing sets the debug port to Serial
+// You can also call it with other streams like Serial1, SerialUSB, etc.
 void SCD30::enableDebugging(Stream &debugPort)
 {
-	_debugPort = &debugPort;
-	_printDebug = true;
+  _debugPort = &debugPort;
+  _printDebug = true;
 }
 
-//Returns the latest available CO2 level
-//If the current level has already been reported, trigger a new read
+// Returns the latest available CO2 level
+// If the current level has already been reported, trigger a new read
 uint16_t SCD30::getCO2(void)
 {
-  if (co2HasBeenReported == true) //Trigger a new read
-    readMeasurement();            //Pull in new co2, humidity, and temp into global vars
+  if (co2HasBeenReported == true) // Trigger a new read
+  {
+    if (readMeasurement() == false) // Pull in new co2, humidity, and temp into global vars
+      co2 = 0;                      // Failed to read sensor
+  }
 
   co2HasBeenReported = true;
 
-  return (uint16_t)co2; //Cut off decimal as co2 is 0 to 10,000
+  return (uint16_t)co2; // Cut off decimal as co2 is 0 to 10,000
 }
 
-//Returns the latest available humidity
-//If the current level has already been reported, trigger a new read
+// Returns the latest available humidity
+// If the current level has already been reported, trigger a new read
 float SCD30::getHumidity(void)
 {
-  if (humidityHasBeenReported == true) //Trigger a new read
-    readMeasurement();                 //Pull in new co2, humidity, and temp into global vars
+  if (humidityHasBeenReported == true) // Trigger a new read
+    if (readMeasurement() == false)    // Pull in new co2, humidity, and temp into global vars
+      humidity = 0;                    // Failed to read sensor
 
   humidityHasBeenReported = true;
 
   return humidity;
 }
 
-//Returns the latest available temperature
-//If the current level has already been reported, trigger a new read
+// Returns the latest available temperature
+// If the current level has already been reported, trigger a new read
 float SCD30::getTemperature(void)
 {
-  if (temperatureHasBeenReported == true) //Trigger a new read
-    readMeasurement();                    //Pull in new co2, humidity, and temp into global vars
+  if (temperatureHasBeenReported == true) // Trigger a new read
+    if (readMeasurement() == false)       // Pull in new co2, humidity, and temp into global vars
+      temperature = 0;                    // Failed to read sensor
 
   temperatureHasBeenReported = true;
 
   return temperature;
 }
 
-//Enables or disables the ASC
+// Enables or disables the ASC
 bool SCD30::setAutoSelfCalibration(bool enable)
 {
   if (enable)
-    return sendCommand(COMMAND_AUTOMATIC_SELF_CALIBRATION, 1); //Activate continuous ASC
+    return sendCommand(COMMAND_AUTOMATIC_SELF_CALIBRATION, 1); // Activate continuous ASC
   else
-    return sendCommand(COMMAND_AUTOMATIC_SELF_CALIBRATION, 0); //Deactivate continuous ASC
+    return sendCommand(COMMAND_AUTOMATIC_SELF_CALIBRATION, 0); // Deactivate continuous ASC
 }
 
-//Set the forced recalibration factor. See 1.3.7.
-//The reference CO2 concentration has to be within the range 400 ppm ≤ cref(CO2) ≤ 2000 ppm.
+// Set the forced recalibration factor. See 1.3.7.
+// The reference CO2 concentration has to be within the range 400 ppm ≤ cref(CO2) ≤ 2000 ppm.
 bool SCD30::setForcedRecalibrationFactor(uint16_t concentration)
 {
   if (concentration < 400 || concentration > 2000)
   {
-    return false; //Error check.
+    return false; // Error check.
   }
   return sendCommand(COMMAND_SET_FORCED_RECALIBRATION_FACTOR, concentration);
 }
 
-//Get the temperature offset. See 1.3.8.
+// Get the temperature offset. See 1.3.8.
 float SCD30::getTemperatureOffset(void)
 {
   uint16_t response = readRegister(COMMAND_SET_TEMPERATURE_OFFSET);
-  return (((float)response) / 100.0);
-}
 
-//Set the temperature offset. See 1.3.8.
-bool SCD30::setTemperatureOffset(float tempOffset)
-{
   union
   {
     int16_t signed16;
     uint16_t unsigned16;
   } signedUnsigned; // Avoid any ambiguity casting int16_t to uint16_t
-  signedUnsigned.signed16 = tempOffset * 100;
-  return sendCommand(COMMAND_SET_TEMPERATURE_OFFSET, signedUnsigned.unsigned16);
+  signedUnsigned.signed16 = response;
+
+  return (((float)signedUnsigned.signed16) / 100.0);
 }
 
-//Get the altitude compenstation. See 1.3.9.
+// Set the temperature offset to remove module heating from temp reading
+bool SCD30::setTemperatureOffset(float tempOffset)
+{
+  // Temp offset is only positive. See: https://github.com/sparkfun/SparkFun_SCD30_Arduino_Library/issues/27#issuecomment-971986826
+  //"The SCD30 offset temperature is obtained by subtracting the reference temperature from the SCD30 output temperature"
+  // https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/9.5_CO2/Sensirion_CO2_Sensors_SCD30_Low_Power_Mode.pdf
+
+  if (tempOffset < 0.0)
+    return (false);
+
+  uint16_t value = tempOffset * 100;
+
+  return sendCommand(COMMAND_SET_TEMPERATURE_OFFSET, value);
+}
+
+// Get the altitude compenstation. See 1.3.9.
 uint16_t SCD30::getAltitudeCompensation(void)
 {
   return readRegister(COMMAND_SET_ALTITUDE_COMPENSATION);
 }
 
-//Set the altitude compenstation. See 1.3.9.
+// Set the altitude compenstation. See 1.3.9.
 bool SCD30::setAltitudeCompensation(uint16_t altitude)
 {
   return sendCommand(COMMAND_SET_ALTITUDE_COMPENSATION, altitude);
 }
 
-//Set the pressure compenstation. This is passed during measurement startup.
-//mbar can be 700 to 1200
+// Set the pressure compenstation. This is passed during measurement startup.
+// mbar can be 700 to 1200
 bool SCD30::setAmbientPressure(uint16_t pressure_mbar)
 {
   if (pressure_mbar < 700 || pressure_mbar > 1200)
@@ -192,33 +217,34 @@ bool SCD30::setAmbientPressure(uint16_t pressure_mbar)
 // SCD30 soft reset
 void SCD30::reset()
 {
-	sendCommand(COMMAND_RESET);
-
+  sendCommand(COMMAND_RESET);
 }
 
 // Get the current ASC setting
 bool SCD30::getAutoSelfCalibration()
 {
   uint16_t response = readRegister(COMMAND_AUTOMATIC_SELF_CALIBRATION);
-  if (response == 1) {
+  if (response == 1)
+  {
     return true;
   }
-  else {
-	return false;
+  else
+  {
+    return false;
   }
 }
 
-//Begins continuous measurements
-//Continuous measurement status is saved in non-volatile memory. When the sensor
-//is powered down while continuous measurement mode is active SCD30 will measure
-//continuously after repowering without sending the measurement command.
-//Returns true if successful
+// Begins continuous measurements
+// Continuous measurement status is saved in non-volatile memory. When the sensor
+// is powered down while continuous measurement mode is active SCD30 will measure
+// continuously after repowering without sending the measurement command.
+// Returns true if successful
 bool SCD30::beginMeasuring(uint16_t pressureOffset)
 {
   return (sendCommand(COMMAND_CONTINUOUS_MEASUREMENT, pressureOffset));
 }
 
-//Overload - no pressureOffset
+// Overload - no pressureOffset
 bool SCD30::beginMeasuring(void)
 {
   return (beginMeasuring(0));
@@ -227,17 +253,26 @@ bool SCD30::beginMeasuring(void)
 // Stop continuous measurement
 bool SCD30::StopMeasurement(void)
 {
-  return(sendCommand(COMMAND_STOP_MEAS));
+  return (sendCommand(COMMAND_STOP_MEAS));
 }
 
-//Sets interval between measurements
-//2 seconds to 1800 seconds (30 minutes)
+// Sets interval between measurements
+// 2 seconds to 1800 seconds (30 minutes)
 bool SCD30::setMeasurementInterval(uint16_t interval)
 {
   return sendCommand(COMMAND_SET_MEASUREMENT_INTERVAL, interval);
 }
 
-//Returns true when data is available
+// Gets interval between measurements
+// 2 seconds to 1800 seconds (30 minutes)
+uint16_t SCD30::getMeasurementInterval(void)
+{
+  uint16_t interval = 0;
+  getSettingValue(COMMAND_SET_MEASUREMENT_INTERVAL, &interval);
+  return (interval);
+}
+
+// Returns true when data is available
 bool SCD30::dataAvailable()
 {
   uint16_t response = readRegister(COMMAND_GET_DATA_READY);
@@ -247,24 +282,27 @@ bool SCD30::dataAvailable()
   return (false);
 }
 
-//Get 18 bytes from SCD30
-//Updates global variables with floats
-//Returns true if success
+// Get 18 bytes from SCD30
+// Updates global variables with floats
+// Returns true if success
 bool SCD30::readMeasurement()
 {
-  //Verify we have data from the sensor
+  // Verify we have data from the sensor
   if (dataAvailable() == false)
     return (false);
 
-  ByteToFl tempCO2; tempCO2.value = 0;
-  ByteToFl tempHumidity; tempHumidity.value = 0;
-  ByteToFl tempTemperature; tempTemperature.value = 0;
+  ByteToFl tempCO2;
+  tempCO2.value = 0;
+  ByteToFl tempHumidity;
+  tempHumidity.value = 0;
+  ByteToFl tempTemperature;
+  tempTemperature.value = 0;
 
   _i2cPort->beginTransmission(SCD30_ADDRESS);
-  _i2cPort->write(COMMAND_READ_MEASUREMENT >> 8);   //MSB
-  _i2cPort->write(COMMAND_READ_MEASUREMENT & 0xFF); //LSB
+  _i2cPort->write(COMMAND_READ_MEASUREMENT >> 8);   // MSB
+  _i2cPort->write(COMMAND_READ_MEASUREMENT & 0xFF); // LSB
   if (_i2cPort->endTransmission() != 0)
-    return (0); //Sensor did not ACK
+    return (0); // Sensor did not ACK
 
   delay(3);
 
@@ -283,25 +321,25 @@ bool SCD30::readMeasurement()
       case 1:
       case 3:
       case 4:
-        tempCO2.array[x < 3 ? 3-x : 4-x] = incoming;
+        tempCO2.array[x < 3 ? 3 - x : 4 - x] = incoming;
         bytesToCrc[x % 3] = incoming;
         break;
       case 6:
       case 7:
       case 9:
       case 10:
-        tempTemperature.array[x < 9 ? 9-x : 10-x] = incoming;
+        tempTemperature.array[x < 9 ? 9 - x : 10 - x] = incoming;
         bytesToCrc[x % 3] = incoming;
         break;
       case 12:
       case 13:
       case 15:
       case 16:
-        tempHumidity.array[x < 15 ? 15-x : 16-x] = incoming;
+        tempHumidity.array[x < 15 ? 15 - x : 16 - x] = incoming;
         bytesToCrc[x % 3] = incoming;
         break;
       default:
-        //Validate CRC
+        // Validate CRC
         uint8_t foundCrc = computeCRC8(bytesToCrc, 2);
         if (foundCrc != incoming)
         {
@@ -337,28 +375,28 @@ bool SCD30::readMeasurement()
       _debugPort->println(F("readMeasurement: encountered error reading SCD30 data."));
     return false;
   }
-  //Now copy the uint32s into their associated floats
+  // Now copy the uint32s into their associated floats
   co2 = tempCO2.value;
   temperature = tempTemperature.value;
   humidity = tempHumidity.value;
 
-  //Mark our global variables as fresh
+  // Mark our global variables as fresh
   co2HasBeenReported = false;
   humidityHasBeenReported = false;
   temperatureHasBeenReported = false;
 
-  return (true); //Success! New data available in globals.
+  return (true); // Success! New data available in globals.
 }
 
-//Gets a setting by reading the appropriate register.
-//Returns true if the CRC is valid.
+// Gets a setting by reading the appropriate register.
+// Returns true if the CRC is valid.
 bool SCD30::getSettingValue(uint16_t registerAddress, uint16_t *val)
 {
   _i2cPort->beginTransmission(SCD30_ADDRESS);
-  _i2cPort->write(registerAddress >> 8);   //MSB
-  _i2cPort->write(registerAddress & 0xFF); //LSB
+  _i2cPort->write(registerAddress >> 8);   // MSB
+  _i2cPort->write(registerAddress & 0xFF); // LSB
   if (_i2cPort->endTransmission() != 0)
-    return (false); //Sensor did not ACK
+    return (false); // Sensor did not ACK
 
   delay(3);
 
@@ -384,14 +422,14 @@ bool SCD30::getSettingValue(uint16_t registerAddress, uint16_t *val)
   return (false);
 }
 
-//Gets two bytes from SCD30
+// Gets two bytes from SCD30
 uint16_t SCD30::readRegister(uint16_t registerAddress)
 {
   _i2cPort->beginTransmission(SCD30_ADDRESS);
-  _i2cPort->write(registerAddress >> 8);   //MSB
-  _i2cPort->write(registerAddress & 0xFF); //LSB
+  _i2cPort->write(registerAddress >> 8);   // MSB
+  _i2cPort->write(registerAddress & 0xFF); // LSB
   if (_i2cPort->endTransmission() != 0)
-    return (0); //Sensor did not ACK
+    return (0); // Sensor did not ACK
 
   delay(3);
 
@@ -402,49 +440,49 @@ uint16_t SCD30::readRegister(uint16_t registerAddress)
     uint8_t lsb = _i2cPort->read();
     return ((uint16_t)msb << 8 | lsb);
   }
-  return (0); //Sensor did not respond
+  return (0); // Sensor did not respond
 }
 
-//Sends a command along with arguments and CRC
+// Sends a command along with arguments and CRC
 bool SCD30::sendCommand(uint16_t command, uint16_t arguments)
 {
   uint8_t data[2];
   data[0] = arguments >> 8;
   data[1] = arguments & 0xFF;
-  uint8_t crc = computeCRC8(data, 2); //Calc CRC on the arguments only, not the command
+  uint8_t crc = computeCRC8(data, 2); // Calc CRC on the arguments only, not the command
 
   _i2cPort->beginTransmission(SCD30_ADDRESS);
-  _i2cPort->write(command >> 8);     //MSB
-  _i2cPort->write(command & 0xFF);   //LSB
-  _i2cPort->write(arguments >> 8);   //MSB
-  _i2cPort->write(arguments & 0xFF); //LSB
+  _i2cPort->write(command >> 8);     // MSB
+  _i2cPort->write(command & 0xFF);   // LSB
+  _i2cPort->write(arguments >> 8);   // MSB
+  _i2cPort->write(arguments & 0xFF); // LSB
   _i2cPort->write(crc);
   if (_i2cPort->endTransmission() != 0)
-    return (false); //Sensor did not ACK
+    return (false); // Sensor did not ACK
 
   return (true);
 }
 
-//Sends just a command, no arguments, no CRC
+// Sends just a command, no arguments, no CRC
 bool SCD30::sendCommand(uint16_t command)
 {
   _i2cPort->beginTransmission(SCD30_ADDRESS);
-  _i2cPort->write(command >> 8);   //MSB
-  _i2cPort->write(command & 0xFF); //LSB
+  _i2cPort->write(command >> 8);   // MSB
+  _i2cPort->write(command & 0xFF); // LSB
   if (_i2cPort->endTransmission() != 0)
-    return (false); //Sensor did not ACK
+    return (false); // Sensor did not ACK
 
   return (true);
 }
 
-//Given an array and a number of bytes, this calculate CRC8 for those bytes
-//CRC is only calc'd on the data portion (two bytes) of the four bytes being sent
-//From: http://www.sunshine2k.de/articles/coding/crc/understanding_crc.html
-//Tested with: http://www.sunshine2k.de/coding/javascript/crc/crc_js.html
-//x^8+x^5+x^4+1 = 0x31
+// Given an array and a number of bytes, this calculate CRC8 for those bytes
+// CRC is only calc'd on the data portion (two bytes) of the four bytes being sent
+// From: http://www.sunshine2k.de/articles/coding/crc/understanding_crc.html
+// Tested with: http://www.sunshine2k.de/coding/javascript/crc/crc_js.html
+// x^8+x^5+x^4+1 = 0x31
 uint8_t SCD30::computeCRC8(uint8_t data[], uint8_t len)
 {
-  uint8_t crc = 0xFF; //Init with 0xFF
+  uint8_t crc = 0xFF; // Init with 0xFF
 
   for (uint8_t x = 0; x < len; x++)
   {
@@ -459,5 +497,5 @@ uint8_t SCD30::computeCRC8(uint8_t data[], uint8_t len)
     }
   }
 
-  return crc; //No output reflection
+  return crc; // No output reflection
 }
diff --git a/ampel-firmware/src/lib/SparkFun_SCD30_Arduino_Library/src/SparkFun_SCD30_Arduino_Library.h b/ampel-firmware/src/lib/SparkFun_SCD30_Arduino_Library/src/SparkFun_SCD30_Arduino_Library.h
index 0104d092167cac83b806c41fdc8694e504b607d2..c5e7d25e5a49be8c7b676c507bae6a587f545c5d 100644
--- a/ampel-firmware/src/lib/SparkFun_SCD30_Arduino_Library/src/SparkFun_SCD30_Arduino_Library.h
+++ b/ampel-firmware/src/lib/SparkFun_SCD30_Arduino_Library/src/SparkFun_SCD30_Arduino_Library.h
@@ -40,10 +40,10 @@
 #include <Wire.h>
 #endif
 
-//The default I2C address for the SCD30 is 0x61.
+// The default I2C address for the SCD30 is 0x61.
 #define SCD30_ADDRESS 0x61
 
-//Available commands
+// Available commands
 
 #define COMMAND_CONTINUOUS_MEASUREMENT 0x0010
 #define COMMAND_SET_MEASUREMENT_INTERVAL 0x4600
@@ -70,38 +70,43 @@ public:
 
 	bool begin(bool autoCalibrate) { return begin(Wire, autoCalibrate); }
 #ifdef USE_TEENSY3_I2C_LIB
-	bool begin(i2c_t3 &wirePort = Wire, bool autoCalibrate = false, bool measBegin = true); //By default use Wire port
+	bool begin(i2c_t3 &wirePort = Wire, bool autoCalibrate = false, bool measBegin = true); // By default use Wire port
 #else
-	bool begin(TwoWire &wirePort = Wire, bool autoCalibrate = false, bool measBegin = true); //By default use Wire port
+	bool begin(TwoWire &wirePort = Wire, bool autoCalibrate = false, bool measBegin = true); // By default use Wire port
 #endif
 
-	void enableDebugging(Stream &debugPort = Serial); //Turn on debug printing. If user doesn't specify then Serial will be used.
+	bool isConnected();
+	void enableDebugging(Stream &debugPort = Serial); // Turn on debug printing. If user doesn't specify then Serial will be used.
 
 	bool beginMeasuring(uint16_t pressureOffset);
 	bool beginMeasuring(void);
 	bool StopMeasurement(void); // paulvha
 
-	// based on paulvha
+	bool setAmbientPressure(uint16_t pressure_mbar);
+
 	bool getSettingValue(uint16_t registerAddress, uint16_t *val);
-	bool getForcedRecalibration(uint16_t *val) { return (getSettingValue(COMMAND_SET_FORCED_RECALIBRATION_FACTOR, val)); }
-	bool getMeasurementInterval(uint16_t *val) { return (getSettingValue(COMMAND_SET_MEASUREMENT_INTERVAL, val)); }
-	bool getTemperatureOffset(uint16_t *val) { return (getSettingValue(COMMAND_SET_TEMPERATURE_OFFSET, val)); }
-	bool getAltitudeCompensation(uint16_t *val) { return (getSettingValue(COMMAND_SET_ALTITUDE_COMPENSATION, val)); }
 	bool getFirmwareVersion(uint16_t *val) { return (getSettingValue(COMMAND_READ_FW_VER, val)); }
-
 	uint16_t getCO2(void);
 	float getHumidity(void);
 	float getTemperature(void);
-	float getTemperatureOffset(void);
-	uint16_t getAltitudeCompensation(void);
 
+	uint16_t getMeasurementInterval(void);
+	bool getMeasurementInterval(uint16_t *val) { return (getSettingValue(COMMAND_SET_MEASUREMENT_INTERVAL, val)); }
 	bool setMeasurementInterval(uint16_t interval);
-	bool setAmbientPressure(uint16_t pressure_mbar);
+
+	uint16_t getAltitudeCompensation(void);
+	bool getAltitudeCompensation(uint16_t *val) { return (getSettingValue(COMMAND_SET_ALTITUDE_COMPENSATION, val)); }
 	bool setAltitudeCompensation(uint16_t altitude);
+
+	bool getAutoSelfCalibration(void);
 	bool setAutoSelfCalibration(bool enable);
+
+	bool getForcedRecalibration(uint16_t *val) { return (getSettingValue(COMMAND_SET_FORCED_RECALIBRATION_FACTOR, val)); }
 	bool setForcedRecalibrationFactor(uint16_t concentration);
+
+	float getTemperatureOffset(void);
+	bool getTemperatureOffset(uint16_t *val) { return (getSettingValue(COMMAND_SET_TEMPERATURE_OFFSET, val)); }
 	bool setTemperatureOffset(float tempOffset);
-	bool getAutoSelfCalibration(void);
 
 	bool dataAvailable();
 	bool readMeasurement();
@@ -116,25 +121,25 @@ public:
 	uint8_t computeCRC8(uint8_t data[], uint8_t len);
 
 private:
-	//Variables
+	// Variables
 #ifdef USE_TEENSY3_I2C_LIB
-	i2c_t3 *_i2cPort; //The generic connection to user's chosen I2C hardware
+	i2c_t3 *_i2cPort; // The generic connection to user's chosen I2C hardware
 #else
-	TwoWire *_i2cPort;																		 //The generic connection to user's chosen I2C hardware
+	TwoWire *_i2cPort;																		 // The generic connection to user's chosen I2C hardware
 #endif
-	//Global main datums
+	// Global main datums
 	float co2 = 0;
 	float temperature = 0;
 	float humidity = 0;
 
-	//These track the staleness of the current data
-	//This allows us to avoid calling readMeasurement() every time individual datums are requested
+	// These track the staleness of the current data
+	// This allows us to avoid calling readMeasurement() every time individual datums are requested
 	bool co2HasBeenReported = true;
 	bool humidityHasBeenReported = true;
 	bool temperatureHasBeenReported = true;
 
-	//Debug
-	Stream *_debugPort;			 //The stream to send debug messages to if enabled. Usually Serial.
-	boolean _printDebug = false; //Flag to print debugging variables
+	// Debug
+	Stream *_debugPort;			 // The stream to send debug messages to if enabled. Usually Serial.
+	boolean _printDebug = false; // Flag to print debugging variables
 };
 #endif
diff --git a/ampel-firmware/util.cpp b/ampel-firmware/util.cpp
index 73f53766a47e5da2a2d079ed64eed019cd8bad5e..130a051e56880b88598408726cc2c5ce3b3dc1fb 100644
--- a/ampel-firmware/util.cpp
+++ b/ampel-firmware/util.cpp
@@ -1,62 +1,16 @@
 #include "util.h"
-
-namespace config {
-  const char *ntp_server = NTP_SERVER;
-  const long utc_offset_in_seconds = UTC_OFFSET_IN_SECONDS; // UTC+1
-}
+#include "sensor_console.h"
 
 #if defined(ESP8266)
+#  include <ESP8266WiFi.h> // required to get MAC address
 const char *current_board = "ESP8266";
-#  if !defined(AMPEL_WIFI)
-void preinit() {
-  // WiFi would be initialized otherwise (on ESP8266), even if unused.
-  // see https://github.com/esp8266/Arduino/issues/2111#issuecomment-224251391
-  ESP8266WiFiClass::preinitWiFiOff();
-}
-#  endif
 #elif defined(ESP32)
+#  include <WiFi.h> // required to get MAC address
 const char *current_board = "ESP32";
 #else
 const char *current_board = "UNKNOWN";
 #endif
 
-//NOTE: ESP32 sometimes couldn't access the NTP server, and every loop would take +1000ms
-// ifdefs could be used to define functions specific to ESP32, e.g. with configTime
-namespace ntp {
-  WiFiUDP ntpUDP;
-  NTPClient timeClient(ntpUDP, config::ntp_server, config::utc_offset_in_seconds, 60000UL);
-  bool connected_at_least_once = false;
-
-  void initialize() {
-    timeClient.begin();
-  }
-
-  void update() {
-    connected_at_least_once |= timeClient.update();
-  }
-
-  void getLocalTime(char *timestamp) {
-    timeClient.getFormattedDate(timestamp);
-  }
-
-  void setLocalTime(int32_t unix_seconds) {
-    char time[23];
-    timeClient.getFormattedDate(time);
-    Serial.print(F("Current time : "));
-    Serial.println(time);
-    if (connected_at_least_once) {
-      Serial.println(F("NTP update already happened. Not changing anything."));
-      return;
-    }
-    Serial.print(F("Setting UNIX time to : "));
-    Serial.println(unix_seconds);
-    timeClient.setEpochTime(unix_seconds - seconds());
-    timeClient.getFormattedDate(time);
-    Serial.print(F("Current time : "));
-    Serial.println(time);
-  }
-}
-
 void Ampel::showFreeSpace() {
   Serial.print(F("Free heap space : "));
   Serial.print(ESP.getFreeHeap());
@@ -90,7 +44,6 @@ char* getSensorId() {
 
 Ampel::Ampel() :
     board(current_board), sensorId(getSensorId()), macAddress(getMacString()), max_loop_duration(0) {
-  sensor_console::defineIntCommand("set_time", ntp::setLocalTime, F("1618829570 (Sets time to the given UNIX time)"));
   sensor_console::defineCommand("free", Ampel::showFreeSpace, F("(Displays available heap space)"));
   sensor_console::defineCommand("reset", []() {
     ESP.restart();
diff --git a/ampel-firmware/util.h b/ampel-firmware/util.h
index 5d13bae02394ca2db91a319e0d8d7aaf3eac0612..495f7eaa0b149658631ec38b1cd5dab318e00af8 100644
--- a/ampel-firmware/util.h
+++ b/ampel-firmware/util.h
@@ -1,28 +1,16 @@
 #ifndef AMPEL_UTIL_H_INCLUDED
 #define AMPEL_UTIL_H_INCLUDED
-#include <Arduino.h>
-#include "config.h"
-#include "sensor_console.h"
 
-#include <WiFiUdp.h> // required for NTP
-#include "src/lib/NTPClient-master/NTPClient.h" // NTP
+#include <stdint.h> // For uint32_t
 
 #if defined(ESP8266)
-#  include <ESP8266WiFi.h> // required to get MAC address
 #  define esp_get_max_free_block_size() ESP.getMaxFreeBlockSize()
 #  define esp_get_heap_fragmentation() ESP.getHeapFragmentation()
 #elif defined(ESP32)
-#  include <WiFi.h> // required to get MAC address
 #  define esp_get_max_free_block_size() ESP.getMaxAllocHeap() //largest block of heap that can be allocated.
 #  define esp_get_heap_fragmentation() "?" // apparently not available for ESP32
 #endif
 
-namespace ntp {
-  void initialize();
-  void update();
-  void getLocalTime(char *timestamp);
-}
-
 namespace util {
   template<typename Tpa, typename Tpb>
   inline auto min(const Tpa &a, const Tpb &b) -> decltype(a < b ? a : b) {
@@ -48,7 +36,4 @@ public:
 
 extern Ampel ampel;
 
-//NOTE: Only use seconds() for duration comparison, not timestamps comparison. Otherwise, problems happen when millis roll over.
-#define seconds() (millis() / 1000UL)
-
 #endif
diff --git a/ampel-firmware/web_server.cpp b/ampel-firmware/web_server.cpp
index 75897bc253172c7459be4f1a1a557ff132c73c55..266be7cfa7f33eeb42510182bedd87819a3a70d3 100644
--- a/ampel-firmware/web_server.cpp
+++ b/ampel-firmware/web_server.cpp
@@ -1,5 +1,27 @@
 #include "web_server.h"
 
+#if defined(ESP8266)
+#  include <ESP8266WebServer.h>
+#elif defined(ESP32)
+#  include <WebServer.h>
+#endif
+
+#include "config.h"
+#include "util.h"
+#include "ntp.h"
+#include "wifi_util.h"
+#include "co2_sensor.h"
+#include "sensor_console.h"
+#ifdef AMPEL_CSV
+#  include "csv_writer.h"
+#endif
+#ifdef AMPEL_MQTT
+#  include "mqtt.h"
+#endif
+#ifdef AMPEL_LORAWAN
+#  include "lorawan.h"
+#endif
+
 namespace config {
   // Values should be defined in config.h
 #ifdef HTTP_USER
@@ -236,7 +258,7 @@ namespace web_server {
         mqtt::connected ? "Yes" : "No", mqtt::last_successful_publish, config::mqtt_sending_interval,
 #endif
 #if defined(AMPEL_LORAWAN) && defined(ESP32)
-        lorawan::connected ? "Yes" : "No", LMIC_FREQUENCY_PLAN, lorawan::last_transmission,
+        lorawan::connected ? "Yes" : "No", config::lorawan_frequency_plan, lorawan::last_transmission,
         config::lorawan_sending_interval,
 #endif
         config::temperature_offset, config::auto_calibrate_sensor ? "Yes" : "No", ampel.sensorId, ampel.sensorId,
diff --git a/ampel-firmware/web_server.h b/ampel-firmware/web_server.h
index bc2c0101fca661d1d7cd0db5ff922851b0224e58..ad52b656bf25279d9816679e6de41a6046962985 100644
--- a/ampel-firmware/web_server.h
+++ b/ampel-firmware/web_server.h
@@ -1,27 +1,6 @@
 #ifndef WEB_SERVER_H_
 #define WEB_SERVER_H_
 
-#if defined(ESP8266)
-#  include <ESP8266WebServer.h>
-#elif defined(ESP32)
-#  include <WebServer.h>
-#endif
-
-#include "config.h"
-#include "util.h"
-#include "wifi_util.h"
-#include "co2_sensor.h"
-#include "sensor_console.h"
-#ifdef AMPEL_CSV
-#  include "csv_writer.h"
-#endif
-#ifdef AMPEL_MQTT
-#  include "mqtt.h"
-#endif
-#ifdef AMPEL_LORAWAN
-#  include "lorawan.h"
-#endif
-
 namespace web_server {
   void initialize();
   void update();
diff --git a/ampel-firmware/wifi_util.cpp b/ampel-firmware/wifi_util.cpp
index 4cdc7a2a597d3d66523c6e37b837346e5231311e..131a61574bdcec7d83c7087474cf44b87f34147f 100644
--- a/ampel-firmware/wifi_util.cpp
+++ b/ampel-firmware/wifi_util.cpp
@@ -1,5 +1,17 @@
 #include "wifi_util.h"
 
+#include "config.h"
+#include "util.h"
+#include "ntp.h"
+#include "led_effects.h"
+#include "sensor_console.h"
+
+#if defined(ESP8266)
+#  include <ESP8266WiFi.h>
+#elif defined(ESP32)
+#  include <WiFi.h>
+#endif
+
 namespace config {
   // WiFi config. See 'config.h' if you want to modify those values.
   const char *wifi_ssid = WIFI_SSID;
@@ -8,7 +20,7 @@ namespace config {
 #ifdef WIFI_TIMEOUT
   const uint8_t wifi_timeout = WIFI_TIMEOUT; // [s] Will try to connect during wifi_timeout seconds before failing.
 #else
-  const uint8_t wifi_timeout = 60;  // [s] Will try to connect during wifi_timeout seconds before failing.
+  const uint8_t wifi_timeout = 60; // [s] Will try to connect during wifi_timeout seconds before failing.
 #endif
 }
 
@@ -40,6 +52,10 @@ namespace wifi {
     Serial.println(WIFI_SSID);
   }
 
+  bool connected() {
+    return WiFi.status() == WL_CONNECTED;
+  }
+
   // Initialize Wi-Fi
   void connect(const char *hostname) {
 
@@ -64,7 +80,7 @@ namespace wifi {
       led_effects::showRainbowWheel();
       Serial.print(".");
     }
-    if (WiFi.status() == WL_CONNECTED) {
+    if (connected()) {
       led_effects::showKITTWheel(color::green);
       Serial.println();
       Serial.print(F("WiFi - Connected! IP address: "));
@@ -74,7 +90,8 @@ namespace wifi {
     } else {
       //TODO: Allow sensor to work as an Access Point, in order to define SSID & password?
       led_effects::showKITTWheel(color::red);
-      Serial.println(F("Connection to WiFi failed"));
+      Serial.print(F("Connection to WiFi failed! Status : "));
+      Serial.println(WiFi.status());
     }
   }
 }
diff --git a/ampel-firmware/wifi_util.h b/ampel-firmware/wifi_util.h
index 1cfe3da134de83f735bad7b8d58cd825fbd5e5d1..78249ec8269d9b0fead0e0cbf030f0670248ce81 100644
--- a/ampel-firmware/wifi_util.h
+++ b/ampel-firmware/wifi_util.h
@@ -1,13 +1,10 @@
 #ifndef WIFI_UTIL_H_INCLUDED
 #define WIFI_UTIL_H_INCLUDED
 
-#include "config.h"
-#include "util.h"
-#include "led_effects.h"
-
 namespace wifi {
   extern char local_ip[];
   void connect(const char *hostname);
+  bool connected();
 }
 
 #endif
diff --git a/platformio.ini b/platformio.ini
index becf69fc263e19f956d1cf7a7ff4701dd7322247..3d016a6c7c5d7c0a985c08a37e29b23aa2c3a69c 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -24,8 +24,3 @@ monitor_speed = 115200
 
 lib_deps =
     MCCI LoRaWAN LMIC library
-
-build_flags =
-    -D ARDUINO_LMIC_PROJECT_CONFIG_H_SUPPRESS
-    -D CFG_eu868=1
-    -D CFG_sx1276_radio=1