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Adafruit_MQTT_Client.cpp Support publishing and receiving large messages. Send multiple 250 byte packets (ref PR#113) for larger messages. Correctly identify topic start position for >127byte messages (ref PR#166). Resolves issue #102 2021-05-12 21:31:22 -07:00
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README.md

Adafruit MQTT Library Build Status

Arduino library for MQTT support, including access to Adafruit IO. Works with the Adafruit FONA, Arduino Yun, ESP8266 Arduino platforms, and anything that supports Arduino's Client interface (like Ethernet shield).

See included examples for how to use the library to access an MQTT service to publish and subscribe to feeds. Note that this does not support the full MQTT spec but is intended to support enough for QoS 0 and 1 publishing.

Depends on the following other libraries depending on the target platform:

Future todos:

  • Subscription callbacks

  • remove watchdog

Compatibility

MCU Tested Works Doesn't Work Not Tested Notes
Atmega328 @ 16MHz X
Atmega328 @ 12MHz X
Atmega32u4 @ 16MHz X
Atmega32u4 @ 8MHz X
ESP8266 X
Atmega2560 @ 16MHz X
ATSAM3X8E X
ATSAM21D X
ATSAMD51J20 X
ATtiny85 @ 16MHz X
ATtiny85 @ 8MHz X
Intel Curie @ 32MHz X
STM32F2 X
  • ATmega328 @ 16MHz : Arduino UNO, Adafruit Pro Trinket 5V, Adafruit Metro 328, Adafruit Metro Mini
  • ATmega328 @ 12MHz : Adafruit Pro Trinket 3V
  • ATmega32u4 @ 16MHz : Arduino Leonardo, Arduino Micro, Arduino Yun, Teensy 2.0
  • ATmega32u4 @ 8MHz : Adafruit Flora, Bluefruit Micro
  • ESP8266 : Adafruit Huzzah
  • ATmega2560 @ 16MHz : Arduino Mega
  • ATSAM3X8E : Arduino Due
  • ATSAM21D : Arduino Zero, M0 Pro
  • ATSAMD51J20: Adafruit PyPortal
  • ATtiny85 @ 16MHz : Adafruit Trinket 5V
  • ATtiny85 @ 8MHz : Adafruit Gemma, Arduino Gemma, Adafruit Trinket 3V