Greetings!
Presented the Homie 3.0 implementation based on Mongoose OS MQTT library
Tested with esp8266 and OpenHAB 2.5+
Validated with 2 types of devices:
- switch (2 way - switch state is visible in OpenHAB and action in from OpenHAB is propagated to the esp)
- input (one way - input state is visible in OpenHAB)
I am using it in a few home projects
Next steps:
- Demo will be added soon
- Native implementation will be added soon
Many thanks in advance for your feedback