doc(homeassistant): some remarks to homeassistant integration

HOMEASSISTANT.md

@@ -0,0 +1,17 @@
+# Integrate AquaMQTT into HomeAssisant
+
+## Automatic via MQTT Discovery
+
+Since Release [v1.4.0](https://github.com/tspopp/AquaMQTT/releases/tag/v1.4.0) AquaMQTT supports the [MQTT Discovery](https://www.home-assistant.io/integrations/mqtt/#mqtt-discovery) protocol from HomeAssistant. Therefore, a new AquaMQTT device will automatically appear in your homeassistant instance, as soon as the following pre-conditions are fullfilled:
+
+- [x] AquaMQTT is connected to the MQTT broker of your HomeAssistant instance
+- [x] The correct home assistant mqtt prefix has been set and the MQTT discovery has been set to enabled within [Configuration.h](./AquaMQTT/include/config/Configuration.h) prior to flashing AquaMQTT on the Arduino.
+- [x] AquaMQTT is connected to the heat-pump and has received valid data from the heat-pumps main controller.
+
+If all these conditions are fullfilled, you will find the AquaMQTT device at `Settings` -> `Device` -> `MQTT/Devices` within your HomeAssistant web interface.
+`
+## Manual by editing your own configuration.yaml
+
+If you need full control over the entities read from AquaMQTT, you may directly edit the `configuration.yaml` file of your homeassistant installation. There is a file [./aquamqtt.yaml](./aquamqtt.yaml) within this repository, which acts as template for you to edit and included in your configuration file. 
+
+Please note, that there might be more attributes not implemented by this example. For a full catalogue of MQTT topics and payloads inspect [./MQTT.md](./MQTT.md) or inspect the MQTT traffic produced by AquaMQTT.

README.md

@@ -62,6 +62,8 @@ Unfortunately, I had no success pairing those solutions with my Windhager brande
 
 ## Further Reading
 
+- [HomeAssistant Integration](./HOMEASSISTANT.md)
+
 - [Troubleshooting / F.A.Q](./TROUBLESHOOTING.md)
 
 - [Heat pump serial protocol](./PROTOCOL.md)