Current version from old git. Release 0.0.9

src/lib/Adafruit_NeoPixel/README.md

+# Adafruit NeoPixel Library [![Build Status](https://github.com/adafruit/Adafruit_NeoPixel/workflows/Arduino%20Library%20CI/badge.svg)](https://github.com/adafruit/Adafruit_NeoPixel/actions)[![Documentation](https://github.com/adafruit/ci-arduino/blob/master/assets/doxygen_badge.svg)](http://adafruit.github.io/Adafruit_NeoPixel/html/index.html)
+
+Arduino library for controlling single-wire-based LED pixels and strip such as the [Adafruit 60 LED/meter Digital LED strip][strip], the [Adafruit FLORA RGB Smart Pixel][flora], the [Adafruit Breadboard-friendly RGB Smart Pixel][pixel], the [Adafruit NeoPixel Stick][stick], and the [Adafruit NeoPixel Shield][shield].
+
+After downloading, rename folder to 'Adafruit_NeoPixel' and install in Arduino Libraries folder. Restart Arduino IDE, then open File->Sketchbook->Library->Adafruit_NeoPixel->strandtest sketch.
+
+Compatibility notes: Port A is not supported on any AVR processors at this time
+
+[flora]:  http://adafruit.com/products/1060
+[strip]:  http://adafruit.com/products/1138
+[pixel]:  http://adafruit.com/products/1312
+[stick]:  http://adafruit.com/products/1426
+[shield]: http://adafruit.com/products/1430
+
+---
+
+## Installation
+
+### First Method
+
+![image](https://user-images.githubusercontent.com/36513474/68967967-3e37f480-0803-11ea-91d9-601848c306ee.png)
+
+1. In the Arduino IDE, navigate to Sketch > Include Library > Manage Libraries
+1. Then the Library Manager will open and you will find a list of libraries that are already installed or ready for installation.
+1. Then search for Neopixel strip using the search bar.
+1. Click on the text area and then select the specific version and install it.
+
+### Second Method
+
+1. Navigate to the [Releases page](https://github.com/adafruit/Adafruit_NeoPixel/releases).
+1. Download the latest release.
+1. Extract the zip file
+1. In the Arduino IDE, navigate to Sketch > Include Library > Add .ZIP Library
+
+## Features
+
+- ### Simple to use
+
+  Controlling NeoPixels “from scratch” is quite a challenge, so we provide a library letting you focus on the fun and interesting bits.
+
+- ### Give back
+
+  The library is free; you don’t have to pay for anything. Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit!
+
+- ### Supported Chipsets
+
+  We have included code for the following chips - sometimes these break for exciting reasons that we can't control in which case please open an issue!
+
+  - AVR ATmega and ATtiny (any 8-bit) - 8 MHz, 12 MHz and 16 MHz
+  - Teensy 3.x and LC
+  - Arduino Due
+  - Arduino 101
+  - ATSAMD21 (Arduino Zero/M0 and other SAMD21 boards) @ 48 MHz
+  - ATSAMD51 @ 120 MHz
+  - Adafruit STM32 Feather @ 120 MHz
+  - ESP8266 any speed
+  - ESP32 any speed
+  - Nordic nRF52 (Adafruit Feather nRF52), nRF51 (micro:bit)
+
+  Check forks for other architectures not listed here!
+
+- ### GNU Lesser General Public License
+
+  Adafruit_NeoPixel is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+## Functions
+
+- begin()
+- updateLength()
+- updateType()
+- show()
+- delay_ns()
+- setPin()
+- setPixelColor()
+- fill()
+- ColorHSV()
+- getPixelColor()
+- setBrightness()
+- getBrightness()
+- clear()
+- gamma32()
+
+## Examples
+
+There are many examples implemented in this library. One of the examples is below. You can find other examples [here](https://github.com/adafruit/Adafruit_NeoPixel/tree/master/examples)
+
+### Simple
+
+```Cpp
+#include <Adafruit_NeoPixel.h>
+#ifdef __AVR__
+  #include <avr/power.h>
+#endif
+#define PIN        6
+#define NUMPIXELS 16
+
+Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
+#define DELAYVAL 500
+
+void setup() {
+#if defined(__AVR_ATtiny85__) && (F_CPU == 16000000)
+  clock_prescale_set(clock_div_1);
+#endif
+
+  pixels.begin();
+}
+
+void loop() {
+  pixels.clear();
+
+  for(int i=0; i<NUMPIXELS; i++) {
+
+    pixels.setPixelColor(i, pixels.Color(0, 150, 0));
+    pixels.show();
+    delay(DELAYVAL);
+  }
+}
+```
+
+## Contributing
+
+If you want to contribute to this project:
+
+- Report bugs and errors
+- Ask for enhancements
+- Create issues and pull requests
+- Tell others about this library
+- Contribute new protocols
+
+Please read [CONTRIBUTING.md](https://github.com/adafruit/Adafruit_NeoPixel/blob/master/CONTRIBUTING.md) for details on our code of conduct, and the process for submitting pull requests to us.
+
+### Roadmap
+
+The PRIME DIRECTIVE is to maintain backward compatibility with existing Arduino sketches -- many are hosted elsewhere and don't track changes here, some are in print and can never be changed!
+
+Please don't reformat code for the sake of reformatting code. The resulting large "visual diff" makes it impossible to untangle actual bug fixes from merely rearranged lines. (Exception for first item in wishlist below.)
+
+Things I'd Like To Do But There's No Official Timeline So Please Don't Count On Any Of This Ever Being Canonical:
+
+- For the show() function (with all the delicate pixel timing stuff), break out each architecture into separate source files rather than the current unmaintainable tangle of #ifdef statements!
+- Please don't use updateLength() or updateType() in new code. They should not have been implemented this way (use the C++ 'new' operator with the regular constructor instead) and are only sticking around because of the Prime Directive. setPin() is OK for now though, it's a trick we can use to 'recycle' pixel memory across multiple strips.
+- In the M0 and M4 code, use the hardware systick counter for bit timing rather than hand-tweaked NOPs (a temporary kludge at the time because I wasn't reading systick correctly). (As of 1.4.2, systick is used on M4 devices and it appears to be overclock-compatible. Not for M0 yet, which is why this item is still here.)
+- As currently written, brightness scaling is still a "destructive" operation -- pixel values are altered in RAM and the original value as set can't be accurately read back, only approximated, which has been confusing and frustrating to users. It was done this way at the time because NeoPixel timing is strict, AVR microcontrollers (all we had at the time) are limited, and assembly language is hard. All the 32-bit architectures should have no problem handling nondestructive brightness scaling -- calculating each byte immediately before it's sent out the wire, maintaining the original set value in RAM -- the work just hasn't been done. There's a fair chance even the AVR code could manage it with some intense focus. (The DotStar library achieves nondestructive brightness scaling because it doesn't have to manage data timing so carefully...every architecture, even ATtiny, just takes whatever cycles it needs for the multiply/shift operations.)
+
+## Credits
+
+This library is written by Phil "Paint Your Dragon" Burgess for Adafruit Industries, with contributions by PJRC, Michael Miller and other members of the open source community.
+
+## License
+
+Adafruit_NeoPixel is free software: you can redistribute it and/or  modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+Adafruit_NeoPixel is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the [GNU Lesser General Public License](https://www.gnu.org/licenses/lgpl-3.0.en.html) for more details.
+You should have received a copy of the GNU Lesser General Public License along with NeoPixel.  If not, see [this](https://www.gnu.org/licenses/)

src/lib/Adafruit_NeoPixel/esp.c

+// Implements the RMT peripheral on Espressif SoCs
+// Copyright (c) 2020 Lucian Copeland for Adafruit Industries
+
+/* Uses code from Espressif RGB LED Strip demo and drivers
+ * Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#if defined(ESP32)
+
+#include <Arduino.h>
+#include "driver/rmt.h"
+
+// 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)
+
+#define WS2812_T0H_NS (400)
+#define WS2812_T0L_NS (850)
+#define WS2812_T1H_NS (800)
+#define WS2812_T1L_NS (450)
+
+#define WS2811_T0H_NS (500)
+#define WS2811_T0L_NS (2000)
+#define WS2811_T1H_NS (1200)
+#define WS2811_T1L_NS (1300)
+
+static uint32_t t0h_ticks = 0;
+static uint32_t t1h_ticks = 0;
+static uint32_t t0l_ticks = 0;
+static uint32_t t1l_ticks = 0;
+
+// Limit the number of RMT channels available for the Neopixels. Defaults to all
+// channels (8 on ESP32, 4 on ESP32-S2 and S3). Redefining this value will free
+// any channels with a higher number for other uses, such as IR send-and-recieve
+// libraries. Redefine as 1 to restrict Neopixels to only a single channel.
+#define ADAFRUIT_RMT_CHANNEL_MAX RMT_CHANNEL_MAX
+
+#define RMT_LL_HW_BASE  (&RMT)
+
+bool rmt_reserved_channels[ADAFRUIT_RMT_CHANNEL_MAX];
+
+static void IRAM_ATTR ws2812_rmt_adapter(const void *src, rmt_item32_t *dest, size_t src_size,
+        size_t wanted_num, size_t *translated_size, size_t *item_num)
+{
+    if (src == NULL || dest == NULL) {
+        *translated_size = 0;
+        *item_num = 0;
+        return;
+    }
+    const rmt_item32_t bit0 = {{{ t0h_ticks, 1, t0l_ticks, 0 }}}; //Logical 0
+    const rmt_item32_t bit1 = {{{ t1h_ticks, 1, t1l_ticks, 0 }}}; //Logical 1
+    size_t size = 0;
+    size_t num = 0;
+    uint8_t *psrc = (uint8_t *)src;
+    rmt_item32_t *pdest = dest;
+    while (size < src_size && num < wanted_num) {
+        for (int i = 0; i < 8; i++) {
+            // MSB first
+            if (*psrc & (1 << (7 - i))) {
+                pdest->val =  bit1.val;
+            } else {
+                pdest->val =  bit0.val;
+            }
+            num++;
+            pdest++;
+        }
+        size++;
+        psrc++;
+    }
+    *translated_size = size;
+    *item_num = num;
+}
+
+void espShow(uint8_t pin, uint8_t *pixels, uint32_t numBytes, boolean is800KHz) {
+    // Reserve channel
+    rmt_channel_t channel = ADAFRUIT_RMT_CHANNEL_MAX;
+    for (size_t i = 0; i < ADAFRUIT_RMT_CHANNEL_MAX; i++) {
+        if (!rmt_reserved_channels[i]) {
+            rmt_reserved_channels[i] = true;
+            channel = i;
+        }
+    }
+    if (channel == ADAFRUIT_RMT_CHANNEL_MAX) {
+        // Ran out of channels!
+        return;
+    }
+
+    // Match default TX config from ESP-IDF version 3.4
+    rmt_config_t config = {
+        .rmt_mode = RMT_MODE_TX,
+        .channel = channel,
+        .gpio_num = pin,
+        .clk_div = 2,
+        .mem_block_num = 1,
+        .tx_config = {
+            .carrier_freq_hz = 38000,
+            .carrier_level = RMT_CARRIER_LEVEL_HIGH,
+            .idle_level = RMT_IDLE_LEVEL_LOW,
+            .carrier_duty_percent = 33,
+            .carrier_en = false,
+            .loop_en = false,
+            .idle_output_en = true,
+        }
+    };
+    rmt_config(&config);
+    rmt_driver_install(config.channel, 0, 0);
+
+    // Convert NS timings to ticks
+    uint32_t counter_clk_hz = 0;
+
+    // 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;
+        uint32_t div = div_cnt == 0 ? 256 : div_cnt;
+        counter_clk_hz = REF_CLK_FREQ / (div);
+    } else {
+        uint32_t div_cnt = RMT_LL_HW_BASE->conf_ch[config.channel].conf0.div_cnt;
+        uint32_t div = div_cnt == 0 ? 256 : div_cnt;
+        counter_clk_hz = APB_CLK_FREQ / (div);
+    }
+
+    // NS to tick converter
+    float ratio = (float)counter_clk_hz / 1e9;
+
+    if (is800KHz) {
+        t0h_ticks = (uint32_t)(ratio * WS2812_T0H_NS);
+        t0l_ticks = (uint32_t)(ratio * WS2812_T0L_NS);
+        t1h_ticks = (uint32_t)(ratio * WS2812_T1H_NS);
+        t1l_ticks = (uint32_t)(ratio * WS2812_T1L_NS);
+    } else {
+        t0h_ticks = (uint32_t)(ratio * WS2811_T0H_NS);
+        t0l_ticks = (uint32_t)(ratio * WS2811_T0L_NS);
+        t1h_ticks = (uint32_t)(ratio * WS2811_T1H_NS);
+        t1l_ticks = (uint32_t)(ratio * WS2811_T1L_NS);
+    }
+
+    // Initialize automatic timing translator
+    rmt_translator_init(config.channel, ws2812_rmt_adapter);
+
+    // Write and wait to finish
+    rmt_write_sample(config.channel, pixels, (size_t)numBytes, true);
+    rmt_wait_tx_done(config.channel, pdMS_TO_TICKS(100));
+
+    // Free channel again
+    rmt_driver_uninstall(config.channel);
+    rmt_reserved_channels[channel] = false;
+
+    gpio_set_direction(pin, GPIO_MODE_OUTPUT);
+}
+
+#endif

src/lib/Adafruit_NeoPixel/esp8266.c

+// This is a mash-up of the Due show() code + insights from Michael Miller's
+// ESP8266 work for the NeoPixelBus library: github.com/Makuna/NeoPixelBus
+// Needs to be a separate .c file to enforce ICACHE_RAM_ATTR execution.
+
+#if defined(ESP8266)
+
+#include <Arduino.h>
+#ifdef ESP8266
+#include <eagle_soc.h>
+#endif
+
+static uint32_t _getCycleCount(void) __attribute__((always_inline));
+static inline uint32_t _getCycleCount(void) {
+  uint32_t ccount;
+  __asm__ __volatile__("rsr %0,ccount":"=a" (ccount));
+  return ccount;
+}
+
+#ifdef ESP8266
+void ICACHE_RAM_ATTR espShow(
+ uint8_t pin, uint8_t *pixels, uint32_t numBytes, 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_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
+
+  uint8_t *p, *end, pix, mask;
+  uint32_t t, time0, time1, period, c, startTime;
+
+#ifdef ESP8266
+  uint32_t pinMask;
+  pinMask   = _BV(pin);
+#endif
+
+  p         =  pixels;
+  end       =  p + numBytes;
+  pix       = *p++;
+  mask      = 0x80;
+  startTime = 0;
+
+#ifdef NEO_KHZ400
+  if(is800KHz) {
+#endif
+    time0  = CYCLES_800_T0H;
+    time1  = CYCLES_800_T1H;
+    period = CYCLES_800;
+#ifdef NEO_KHZ400
+  } else { // 400 KHz bitstream
+    time0  = CYCLES_400_T0H;
+    time1  = CYCLES_400_T1H;
+    period = CYCLES_400;
+  }
+#endif
+
+  for(t = time0;; t = time0) {
+    if(pix & mask) t = time1;                             // Bit high duration
+    while(((c = _getCycleCount()) - startTime) < period); // Wait for bit start
+#ifdef ESP8266
+    GPIO_REG_WRITE(GPIO_OUT_W1TS_ADDRESS, pinMask);       // Set high
+#else
+    gpio_set_level(pin, HIGH);
+#endif
+    startTime = c;                                        // Save start time
+    while(((c = _getCycleCount()) - startTime) < t);      // Wait high duration
+#ifdef ESP8266
+    GPIO_REG_WRITE(GPIO_OUT_W1TC_ADDRESS, pinMask);       // Set low
+#else
+    gpio_set_level(pin, LOW);
+#endif
+    if(!(mask >>= 1)) {                                   // Next bit/byte
+      if(p >= end) break;
+      pix  = *p++;
+      mask = 0x80;
+    }
+  }
+  while((_getCycleCount() - startTime) < period); // Wait for last bit
+}
+
+#endif // ESP8266

src/lib/Adafruit_NeoPixel/kendyte_k210.c

+// This is a mash-up of the Due show() code + insights from Michael Miller's
+// ESP8266 work for the NeoPixelBus library: github.com/Makuna/NeoPixelBus
+// Needs to be a separate .c file to enforce ICACHE_RAM_ATTR execution.
+#if defined(K210) 
+#define KENDRYTE_K210 1
+#endif
+
+#if defined(KENDRYTE_K210)
+
+#include <Arduino.h>
+#include "sysctl.h"
+
+void  k210Show(
+    uint8_t pin, uint8_t *pixels, uint32_t numBytes, boolean is800KHz)
+{
+
+#define CYCLES_800_T0H (sysctl_clock_get_freq(SYSCTL_CLOCK_CPU) / 2500000) // 0.4us
+#define CYCLES_800_T1H (sysctl_clock_get_freq(SYSCTL_CLOCK_CPU) / 1250000) // 0.8us
+#define CYCLES_800 (sysctl_clock_get_freq(SYSCTL_CLOCK_CPU) / 800000)      // 1.25us per bit
+#define CYCLES_400_T0H (sysctl_clock_get_freq(SYSCTL_CLOCK_CPU) / 2000000) // 0.5uS
+#define CYCLES_400_T1H (sysctl_clock_get_freq(SYSCTL_CLOCK_CPU) / 833333)  // 1.2us
+#define CYCLES_400 (sysctl_clock_get_freq(SYSCTL_CLOCK_CPU) / 400000)      // 2.5us per bit
+
+    uint8_t *p, *end, pix, mask;
+    uint32_t t, time0, time1, period, c, startTime;
+
+    p = pixels;
+    end = p + numBytes;
+    pix = *p++;
+    mask = 0x80;
+    startTime = 0;
+
+#ifdef NEO_KHZ400
+    if (is800KHz)
+    {
+#endif
+        time0 = CYCLES_800_T0H;
+        time1 = CYCLES_800_T1H;
+        period = CYCLES_800;
+#ifdef NEO_KHZ400
+    }
+    else
+    { // 400 KHz bitstream
+        time0 = CYCLES_400_T0H;
+        time1 = CYCLES_400_T1H;
+        period = CYCLES_400;
+    }
+#endif
+
+    for (t = time0;; t = time0)
+    {
+        if (pix & mask)
+            t = time1; // Bit high duration
+        while (((c = read_cycle()) - startTime) < period)
+            ; // Wait for bit start
+        digitalWrite(pin, HIGH);
+        startTime = c; // Save start time
+        while (((c = read_cycle()) - startTime) < t)
+            ; // Wait high duration
+        digitalWrite(pin, LOW);
+
+        if (!(mask >>= 1))
+        { // Next bit/byte
+            if (p >= end)
+                break;
+            pix = *p++;
+            mask = 0x80;
+        }
+    }
+    while ((read_cycle() - startTime) < period)
+        ; // Wait for last bit
+}
+
+#endif // KENDRYTE_K210

src/lib/Adafruit_NeoPixel/keywords.txt

+#######################################
+# Syntax Coloring Map For Adafruit_NeoPixel
+#######################################
+# Class
+#######################################
+
+Adafruit_NeoPixel	KEYWORD1
+
+#######################################
+# Methods and Functions
+#######################################	
+
+begin			KEYWORD2
+show			KEYWORD2
+setPin			KEYWORD2
+setPixelColor		KEYWORD2
+fill			KEYWORD2
+setBrightness		KEYWORD2
+clear			KEYWORD2
+updateLength		KEYWORD2
+updateType		KEYWORD2
+canShow			KEYWORD2
+getPixels		KEYWORD2
+getBrightness		KEYWORD2
+getPin			KEYWORD2
+numPixels		KEYWORD2
+getPixelColor		KEYWORD2
+sine8			KEYWORD2
+gamma8			KEYWORD2
+Color			KEYWORD2
+ColorHSV		KEYWORD2
+gamma32			KEYWORD2
+
+#######################################
+# Constants
+#######################################
+
+NEO_COLMASK		LITERAL1
+NEO_SPDMASK		LITERAL1
+NEO_KHZ800		LITERAL1
+NEO_KHZ400		LITERAL1
+NEO_RGB			LITERAL1
+NEO_RBG			LITERAL1
+NEO_GRB			LITERAL1
+NEO_GBR			LITERAL1
+NEO_BRG			LITERAL1
+NEO_BGR			LITERAL1
+NEO_WRGB		LITERAL1
+NEO_WRBG		LITERAL1
+NEO_WGRB		LITERAL1
+NEO_WGBR		LITERAL1
+NEO_WBRG		LITERAL1
+NEO_WBGR		LITERAL1
+NEO_RWGB		LITERAL1
+NEO_RWBG		LITERAL1
+NEO_RGWB		LITERAL1
+NEO_RGBW		LITERAL1
+NEO_RBWG		LITERAL1
+NEO_RBGW		LITERAL1
+NEO_GWRB		LITERAL1
+NEO_GWBR		LITERAL1
+NEO_GRWB		LITERAL1
+NEO_GRBW		LITERAL1
+NEO_GBWR		LITERAL1
+NEO_GBRW		LITERAL1
+NEO_BWRG		LITERAL1
+NEO_BWGR		LITERAL1
+NEO_BRWG		LITERAL1
+NEO_BRGW		LITERAL1
+NEO_BGWR		LITERAL1
+NEO_BGRW		LITERAL1
+

src/lib/Adafruit_NeoPixel/library.properties

+name=Adafruit NeoPixel
+version=1.7.0
+author=Adafruit
+maintainer=Adafruit <info@adafruit.com>
+sentence=Arduino library for controlling single-wire-based LED pixels and strip.
+paragraph=Arduino library for controlling single-wire-based LED pixels and strip.
+category=Display
+url=https://github.com/adafruit/Adafruit_NeoPixel
+architectures=*

src/lib/NTPClient-master/.travis.yml

+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

src/lib/NTPClient-master/CHANGELOG

+NTPClient 3.1.0 - 2016.05.31
+
+* Added functions for changing the timeOffset and updateInterval later. Thanks @SirUli
+
+NTPClient 3.0.0 - 2016.04.19
+
+* Constructors now require UDP instance argument, to add support for non-ESP8266 boards
+* Added optional begin API to override default local port
+* Added end API to close UDP socket
+* Changed return type of update and forceUpdate APIs to bool, and return success or failure
+* Change return type of getDay, getHours, getMinutes, and getSeconds to int
+
+Older
+
+* Changes not recorded

src/lib/NTPClient-master/NTPClient.cpp

+/**
+ * The MIT License (MIT)
+ * Copyright (c) 2015 by Fabrice Weinberg
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "NTPClient.h"
+
+NTPClient::NTPClient(UDP& udp) {
+  this->_udp            = &udp;
+}
+
+NTPClient::NTPClient(UDP& udp, int timeOffset) {
+  this->_udp            = &udp;
+  this->_timeOffset     = timeOffset;
+}
+
+NTPClient::NTPClient(UDP& udp, const char* poolServerName) {
+  this->_udp            = &udp;
+  this->_poolServerName = poolServerName;
+}
+
+NTPClient::NTPClient(UDP& udp, const char* poolServerName, int timeOffset) {
+  this->_udp            = &udp;
+  this->_timeOffset     = timeOffset;
+  this->_poolServerName = poolServerName;
+}
+
+NTPClient::NTPClient(UDP& udp, const char* poolServerName, int timeOffset, unsigned long updateInterval) {
+  this->_udp            = &udp;
+  this->_timeOffset     = timeOffset;
+  this->_poolServerName = poolServerName;
+  this->_updateInterval = updateInterval;
+}
+
+void NTPClient::begin() {
+  this->begin(NTP_DEFAULT_LOCAL_PORT);
+}
+
+void NTPClient::begin(int port) {
+  this->_port = port;
+
+  this->_udp->begin(this->_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...
+  byte timeout = 0;
+  int cb = 0;
+  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
+
+  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
+  // this is NTP time (seconds since Jan 1 1900):
+  unsigned long secsSince1900 = highWord << 16 | lowWord;
+
+  this->_currentEpoc = secsSince1900 - SEVENZYYEARS;
+
+  return true;
+}
+
+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
+    return this->forceUpdate();
+  }
+  return true;
+}
+
+unsigned long NTPClient::getEpochTime() {
+  return this->_timeOffset + // User offset
+         this->_currentEpoc + // Epoc returned by the NTP server
+         ((millis() - this->_lastUpdate) / 1000); // Time since last update
+}
+
+int NTPClient::getDay() {
+  return (((this->getEpochTime()  / 86400L) + 4 ) % 7); //0 is Sunday
+}
+int NTPClient::getHours() {
+  return ((this->getEpochTime()  % 86400L) / 3600);
+}
+int NTPClient::getMinutes() {
+  return ((this->getEpochTime() % 3600) / 60);
+}
+int NTPClient::getSeconds() {
+  return (this->getEpochTime() % 60);
+}
+
+String NTPClient::getFormattedTime(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;
+
+  char formatted_time[9];
+  snprintf(formatted_time, sizeof(formatted_time), "%02d:%02d:%02d", hours, minutes, seconds);
+  return String(formatted_time);
+}
+
+// Based on https://github.com/PaulStoffregen/Time/blob/master/Time.cpp
+String NTPClient::getFormattedDate(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};
+
+  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_date[23];
+  snprintf(formatted_date, sizeof(formatted_date), "%4lu-%02d-%02lu %s%+03d",
+      year, month, rawTime, this->getFormattedTime(secs).c_str(), this->_timeOffset / 3600);
+
+  return String(formatted_date);
+}
+
+void NTPClient::end() {
+  this->_udp->stop();
+
+  this->_udpSetup = false;
+}
+
+void NTPClient::setTimeOffset(int timeOffset) {
+  this->_timeOffset     = timeOffset;
+}
+
+void NTPClient::setUpdateInterval(unsigned long updateInterval) {
+  this->_updateInterval = updateInterval;
+}
+
+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[13]  = 0x4E;
+  this->_packetBuffer[14]  = 0x49;
+  this->_packetBuffer[15]  = 0x52;
+
+  // 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
+  this->_udp->write(this->_packetBuffer, NTP_PACKET_SIZE);
+  this->_udp->endPacket();
+}
+
+void NTPClient::setEpochTime(unsigned long secs) {
+  this->_currentEpoc = secs;
+}

src/lib/NTPClient-master/NTPClient.h

+#pragma once
+
+#include "Arduino.h"
+
+#include <Udp.h>
+
+#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:
+    UDP*          _udp;
+    bool          _udpSetup       = false;
+
+    const char*   _poolServerName = "pool.ntp.org"; // Default time server
+    int           _port           = NTP_DEFAULT_LOCAL_PORT;
+    int           _timeOffset     = 0;
+
+    unsigned long _updateInterval = 60000;  // In ms
+
+    unsigned long _currentEpoc    = 0;      // In s
+    unsigned long _lastUpdate     = 0;      // In ms
+
+    byte          _packetBuffer[NTP_PACKET_SIZE];
+
+    void          sendNTPPacket();
+    bool          isValid(byte * ntpPacket);
+
+  public:
+    NTPClient(UDP& udp);
+    NTPClient(UDP& udp, int 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);
+
+    /**
+     * Starts the underlying UDP client with the default local port
+     */
+    void begin();
+
+    /**
+     * Starts the underlying UDP client with the specified local port
+     */
+    void begin(int port);
+
+    /**
+     * This should be called in the main loop of your application. By default an update from the NTP Server is only
+     * made every 60 seconds. This can be configured in the NTPClient constructor.
+     *
+     * @return true on success, false on failure
+     */
+    bool update();
+
+    /**
+     * This will force the update from the NTP Server.
+     *
+     * @return true on success, false on failure
+     */
+    bool forceUpdate();
+
+    int getDay();
+    int getHours();
+    int getMinutes();
+    int getSeconds();
+
+    /**
+     * Changes the time offset. Useful for changing timezones dynamically
+     */
+    void setTimeOffset(int timeOffset);
+
+    /**
+     * Set the update interval to another frequency. E.g. useful when the
+     * timeOffset should not be set in the constructor
+     */
+    void setUpdateInterval(unsigned long updateInterval);
+
+    /**
+    * @return secs argument (or 0 for current time) formatted like `hh:mm:ss`
+    */
+    String getFormattedTime(unsigned long secs = 0);
+
+    /**
+     * @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`
+    */
+    String getFormattedDate(unsigned long secs = 0);
+
+    /**
+     * Stops the underlying UDP client
+     */
+    void end();
+
+    /**
+    * Replace the NTP-fetched time with seconds since Jan. 1, 1970
+    */
+    void setEpochTime(unsigned long secs);
+};

src/lib/NTPClient-master/README.md

+# 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);
+}
+```

src/lib/NTPClient-master/keywords.txt

+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+NTPClient	KEYWORD1
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+
+begin	KEYWORD2
+end	KEYWORD2
+update	KEYWORD2
+forceUpdate	KEYWORD2
+getDay	KEYWORD2
+getHours	KEYWORD2
+getMinutes	KEYWORD2
+getSeconds	KEYWORD2
+getFormattedTime	KEYWORD2
+getEpochTime	KEYWORD2

src/lib/NTPClient-master/library.json

+{
+  "name": "NTPClient",
+  "keywords": "ntp, client, time",
+  "description": "A NTPClient to connect to a time server",
+  "authors":
+  [
+    {
+      "name": "Fabrice Weinberg",
+      "email": "fabrice@weinberg.me"
+    },
+    {
+      "name": "Sandeep Mistry",
+      "email": "s.mistry@arduino.cc"
+    }    
+  ],
+  "repository":
+  {
+    "type": "git",
+    "url": "https://github.com/arduino-libraries/NTPClient.git"
+  },
+  "version": "3.1.0",
+  "frameworks": "arduino",
+  "platforms": "espressif"
+}

src/lib/NTPClient-master/library.properties

+name=NTPClient
+version=3.1.0
+author=Fabrice Weinberg
+maintainer=Fabrice Weinberg <fabrice@weinberg.me>
+sentence=An NTPClient to connect to a time server
+paragraph=Get time from a NTP server and keep it in sync.
+category=Timing
+url=https://github.com/arduino-libraries/NTPClient
+architectures=*

src/lib/PubSubClient/CHANGES.txt

+2.8
+   * Add setBufferSize() to override MQTT_MAX_PACKET_SIZE
+   * Add setKeepAlive() to override MQTT_KEEPALIVE
+   * Add setSocketTimeout() to overide MQTT_SOCKET_TIMEOUT
+   * Added check to prevent subscribe/unsubscribe to empty topics
+   * Declare wifi mode prior to connect in ESP example
+   * Use `strnlen` to avoid overruns
+   * Support pre-connected Client objects
+
+2.7
+   * Fix remaining-length handling to prevent buffer overrun
+   * Add large-payload API - beginPublish/write/publish/endPublish
+   * Add yield call to improve reliability on ESP
+   * Add Clean Session flag to connect options
+   * Add ESP32 support for functional callback signature
+   * Various other fixes
+
+2.4
+   * Add MQTT_SOCKET_TIMEOUT to prevent it blocking indefinitely
+     whilst waiting for inbound data
+   * Fixed return code when publishing >256 bytes
+
+2.3
+   * Add publish(topic,payload,retained) function
+
+2.2
+   * Change code layout to match Arduino Library reqs
+
+2.1
+   * Add MAX_TRANSFER_SIZE def to chunk messages if needed
+   * Reject topic/payloads that exceed MQTT_MAX_PACKET_SIZE
+
+2.0
+   * Add (and default to) MQTT 3.1.1 support
+   * Fix PROGMEM handling for Intel Galileo/ESP8266
+   * Add overloaded constructors for convenience
+   * Add chainable setters for server/callback/client/stream
+   * Add state function to return connack return code
+
+1.9
+   * Do not split MQTT packets over multiple calls to _client->write()
+   * API change: All constructors now require an instance of Client
+      to be passed in.
+   * Fixed example to match 1.8 api changes - dpslwk
+   * Added username/password support - WilHall
+   * Added publish_P - publishes messages from PROGMEM - jobytaffey
+
+1.8
+    * KeepAlive interval is configurable in PubSubClient.h
+    * Maximum packet size is configurable in PubSubClient.h
+    * API change: Return boolean rather than int from various functions
+    * API change: Length parameter in message callback changed
+       from int to unsigned int
+    * Various internal tidy-ups around types
+1.7
+    * Improved keepalive handling
+    * Updated to the Arduino-1.0 API
+1.6
+    * Added the ability to publish a retained message
+
+1.5
+    * Added default constructor
+    * Fixed compile error when used with arduino-0021 or later
+
+1.4
+    * Fixed connection lost handling
+
+1.3
+    * Fixed packet reading bug in PubSubClient.readPacket
+
+1.2
+    * Fixed compile error when used with arduino-0016 or later
+
+
+1.1
+    * Reduced size of library
+    * Added support for Will messages
+    * Clarified licensing - see LICENSE.txt
+
+
+1.0
+    * Only Quality of Service (QOS) 0 messaging is supported
+    * The maximum message size, including header, is 128 bytes
+    * The keepalive interval is set to 30 seconds
+    * No support for Will messages

src/lib/PubSubClient/LICENSE.txt

+Copyright (c) 2008-2020 Nicholas O'Leary
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

src/lib/PubSubClient/README.md

+# Arduino Client for MQTT
+
+This library provides a client for doing simple publish/subscribe messaging with
+a server that supports MQTT.
+
+## Examples
+
+The library comes with a number of example sketches. See File > Examples > PubSubClient
+within the Arduino application.
+
+Full API documentation is available here: https://pubsubclient.knolleary.net
+
+## Limitations
+
+ - It can only publish QoS 0 messages. It can subscribe at QoS 0 or QoS 1.
+ - The maximum message size, including header, is **256 bytes** by default. This
+   is configurable via `MQTT_MAX_PACKET_SIZE` in `PubSubClient.h` or can be changed
+   by calling `PubSubClient::setBufferSize(size)`.
+ - The keepalive interval is set to 15 seconds by default. This is configurable
+   via `MQTT_KEEPALIVE` in `PubSubClient.h` or can be changed by calling
+   `PubSubClient::setKeepAlive(keepAlive)`.
+ - The client uses MQTT 3.1.1 by default. It can be changed to use MQTT 3.1 by
+   changing value of `MQTT_VERSION` in `PubSubClient.h`.
+
+
+## Compatible Hardware
+
+The library uses the Arduino Ethernet Client api for interacting with the
+underlying network hardware. This means it Just Works with a growing number of
+boards and shields, including:
+
+ - Arduino Ethernet
+ - Arduino Ethernet Shield
+ - Arduino YUN – use the included `YunClient` in place of `EthernetClient`, and
+   be sure to do a `Bridge.begin()` first
+ - Arduino WiFi Shield - if you want to send packets > 90 bytes with this shield,
+   enable the `MQTT_MAX_TRANSFER_SIZE` define in `PubSubClient.h`.
+ - Sparkfun WiFly Shield – [library](https://github.com/dpslwk/WiFly)
+ - TI CC3000 WiFi - [library](https://github.com/sparkfun/SFE_CC3000_Library)
+ - Intel Galileo/Edison
+ - ESP8266
+ - ESP32
+
+The library cannot currently be used with hardware based on the ENC28J60 chip –
+such as the Nanode or the Nuelectronics Ethernet Shield. For those, there is an
+[alternative library](https://github.com/njh/NanodeMQTT) available.
+
+## License
+
+This code is released under the MIT License.

src/lib/PubSubClient/keywords.txt

+#######################################
+# Syntax Coloring Map For PubSubClient
+#######################################
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+PubSubClient	KEYWORD1
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+
+connect 	KEYWORD2
+disconnect 	KEYWORD2
+publish 	KEYWORD2
+publish_P 	KEYWORD2
+beginPublish 	KEYWORD2
+endPublish 	KEYWORD2
+write	 	KEYWORD2
+subscribe 	KEYWORD2
+unsubscribe 	KEYWORD2
+loop 	KEYWORD2
+connected 	KEYWORD2
+setServer	KEYWORD2
+setCallback	KEYWORD2
+setClient	KEYWORD2
+setStream	KEYWORD2
+setKeepAlive 	KEYWORD2
+setBufferSize 	KEYWORD2
+setSocketTimeout 	KEYWORD2
+
+#######################################
+# Constants (LITERAL1)
+#######################################

src/lib/PubSubClient/library.json

+{
+    "name": "PubSubClient",
+    "keywords": "ethernet, mqtt, m2m, iot",
+    "description": "A client library for MQTT messaging. MQTT is a lightweight messaging protocol ideal for small devices. This library allows you to send and receive MQTT messages. It supports the latest MQTT 3.1.1 protocol and can be configured to use the older MQTT 3.1 if needed. It supports all Arduino Ethernet Client compatible hardware, including the Intel Galileo/Edison, ESP8266 and TI CC3000.",
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/knolleary/pubsubclient.git"
+    },
+    "version": "2.8",
+    "exclude": "tests",
+    "examples": "examples/*/*.ino",
+    "frameworks": "arduino",
+    "platforms": [
+        "atmelavr",
+        "espressif8266",
+        "espressif32"
+    ]
+}

src/lib/PubSubClient/library.properties

+name=PubSubClient
+version=2.8
+author=Nick O'Leary <nick.oleary@gmail.com>
+maintainer=Nick O'Leary <nick.oleary@gmail.com>
+sentence=A client library for MQTT messaging.
+paragraph=MQTT is a lightweight messaging protocol ideal for small devices. This library allows you to send and receive MQTT messages. It supports the latest MQTT 3.1.1 protocol and can be configured to use the older MQTT 3.1 if needed. It supports all Arduino Ethernet Client compatible hardware, including the Intel Galileo/Edison, ESP8266 and TI CC3000.
+category=Communication
+url=http://pubsubclient.knolleary.net
+architectures=*