(You will need a github account to do so)

ESP32 MQTT-Node

Firmware to demonstrate the use of the mqtt libary on a ESP32 node_mcu board using the esspresif development framework.

MQTT keywords addressed

• MQTT Protocol V5.0
• Secure Websocket transport (wss://)
• Certificate Validation based on bundled root certififcates

Flash the pre-built firmware

• Point your browser to https://aschiffler.github.io/esp32-mqtt-node
• Follow the instructions to connect your physical device

Note: Wifi connection is limited to WPA2-PSK with the pre-built firmware. Configure other options in the menu before buidling a custom firmware by (idf.py menuconfig)

Use the Application after flashing

• Point your browser to https://aschiffler.github.io/esp32-mqtt-node
• Follow the instructions to connect your physical device
• Start the serial console in the browser
• Typ in your information: wifi, broker (wss://, ws://, mqtt:// and mqtts:// is supported, eg. mqtts://mqtt.cedalo.cloud:8883), protocol version 5 || 3, login credentials

Build and flash your own firmware right in the browser powered by gitpod.io

• Open the development environment ```gitpod```` (github account needed)
• Modify the code under main/app_main.c
• Build the firmware with idf.py build
• Flash the firmware by the Web Flash Tool -> Find the link under Ports

Based on MQTT Libary examples: https://github.com/espressif/esp-idf/blob/1c84cfde14dcffdc77d086a5204ce8a548dce935/examples/protocols/mqtt5/main/app_main.c#L191