Merge branch 'develop'

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).

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"

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.

ampel-firmware/co2_sensor.cpp

 #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).

ampel-firmware/co2_sensor.h

 #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;

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/

ampel-firmware/csv_writer.cpp

 #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]

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]
 }

ampel-firmware/led_effects.cpp

 #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;

ampel-firmware/led_effects.h

 #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();

ampel-firmware/lorawan.cpp

 #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();

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

ampel-firmware/mqtt.cpp

 #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)

ampel-firmware/mqtt.h

 #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]

ampel-firmware/ntp.cpp

+#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);
+  }
+}

ampel-firmware/ntp.h

+#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

ampel-firmware/sensor_console.h

 #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);
 }

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!