ESP32 MQTT Library

Features

• Based on: https://github.com/tuanpmt/esp_mqtt
• Support MQTT over TCP, SSL with mbedtls, MQTT over Websocket, MQTT over Websocket Secure
• Easy to setup with URI
• Multiple instances (Multiple clients in one application)
• Support subscribing, publishing, authentication, will messages, keep alive pings and all 3 QoS levels (it should be a fully functional client).
• Support for MQTT 3.1.1 and 5.0

How to use

ESP-MQTT is available through the ESP-IDF Component Manager and ships as a standard ESP-IDF component.

• To add it via the Component Manager (recommended), declare the dependency in your project's idf_component.yml, for example:

  dependencies:
    espressif/mqtt: "*"
  

  Replace * with the version constraint you want to track, or run idf.py add-dependency espressif/mqtt.

• For local development, clone this repository as mqtt so the component name matches:

  git clone https://github.com/espressif/esp-mqtt.git mqtt
  

Documentation

• Documentation of ESP-MQTT API: https://docs.espressif.com/projects/esp-mqtt/en/stable/esp32/

License

• Apache License 2.0
• MQTT package origin: Stephen Robinson - contiki-mqtt
• Additional contributions by @tuanpmt

Older IDF versions

For ESP-IDF versions prior to IDFv3.2, please clone as a component of ESP-IDF:

git submodule add https://github.com/espressif/esp-mqtt.git components/espmqtt

and checkout the ESP-MQTT_FOR_IDF_3.1 tag