Zigbee HVAC endpoint support

[P-R-O-C-H-Y]

Related area

Zigbee

Hardware specification

C6/H2

Is your feature request related to a problem?

Add support of HVAC endpoint to the Zigbee library.

Describe the solution you'd like

Add support of HVAC endpoint to the Zigbee library.

Describe alternatives you've considered

No response

Additional context

Discussed in #10869

I have checked existing list of Feature requests and the Contribution Guide

• I confirm I have checked existing list of Feature requests and Contribution Guide.

[P-R-O-C-H-Y]

cc @mvermand22

[MatAtBread]

I'd be interested in this too. I'm half way through building one that kind of works, but struggling to understand how to implement the setReporting(...) functionality for things like runningMode.

As far as I can see, the HVAC spec doesn't specify a valve_position attribute. I've implemented this as a manufacturer-specific attribute on my HVAC cluster, but this is very much a work in progress and having a working example would be great 😃

[Danixu]

Just what I need. I want to convert my current ESP32 device which is controlling my A/C using ESPHome to Zigbee. I've located the used library and the only that I need is to have support for HVAC.

[mvermand22]

This is what I've got so far:

https://gist.github.com/mvermand22/18778bf1601e6c03f50a9cf72a3fd606
https://gist.github.com/mvermand22/4a81239b6037dcd73e3ed93d185feb63

sendReport does send ESP_ZB_ZCL_ATTR_THERMOSTAT_LOCAL_TEMPERATURE_ID, but ESP_ZB_ZCL_ATTR_THERMOSTAT_OCCUPIED_HEATING_SETPOINT_ID doesn't seem to be sent... strange.
I also need to use address_mode = ESP_ZB_APS_ADDR_MODE_16_ENDP_PRESENT, else if I use ESP_ZB_APS_ADDR_MODE_DST_ADDR_ENDP_NOT_PRESENT nothing is sent too even for ESP_ZB_ZCL_ATTR_THERMOSTAT_LOCAL_TEMPERATURE_ID.

It's really still some trail & error code. I'm not a Zigbee / Arduino / C++ expert :-)
I'm trying to get it working together with Samsung SmartThings hub.

On/Off works and changing temperature setpoint works... sometimes.
Sometimes I get INVALID_VALUE and then suddenly it works for the same value.
Haven't figured that one out yet...