Adds documentation on the new weather platform for KNX (#14350)

source/_integrations/knx.markdown

@@ -30,6 +30,7 @@ There is currently support for the following device types within Home Assistant:
 - [Scene](/integrations/scene.knx)
 - [Sensor](/integrations/sensor.knx)
 - [Switch](/integrations/switch.knx)
+- [Weather](/integrations/weather.knx)
 
 
 ## Configuration

source/_integrations/weather.knx.markdown

@@ -0,0 +1,101 @@
+---
+title: "KNX Weather"
+description: "Instructions on how to integrate KNX weather stations with Home Assistant."
+ha_category:
+  - Weather
+ha_release: 0.115.0
+ha_iot_class: Local Push
+ha_domain: knx
+---
+
+<div class='note'>
+  
+The `knx` integration must be configured correctly to use this integration, see [KNX Integration](/integrations/knx).
+
+</div>
+
+The `knx` weather platform is used as an interface to KNX weather stations.
+
+To use your KNX weather station in your installation, add the following lines to your top level KNX configuration key in `configuration.yaml`:
+
+```yaml
+# Example configuration.yaml entry
+knx:
+  weather:
+    - name: "home"
+      address_temperature: "7/0/0"
+      address_brightness_south: "7/0/1"
+      address_brightness_west: "7/0/2"
+      address_brightness_east: "7/0/3"
+      address_wind_speed: "7/0/4"
+      address_rain_alarm: "7/0/5"
+      address_frost_alarm: "7/0/6"
+      address_wind_alarm: "7/0/7"
+      address_day_night: "7/0/8"
+      address_air_pressure: "7/0/9"
+      address_humidity: "7/0/10"
+      expose_sensors: False
+      sync_state: True
+```
+
+{% configuration %}
+name:
+  description: A name for this device used within Home Assistant.
+  required: false
+  default: KNX Weather
+  type: string
+address_temperature:
+  description: KNX group address for reading current outside temperature from KNX bus. *DPT 9.001*
+  required: true
+  type: string
+address_brightness_south:
+  description: KNX group address for reading current brightness to south coordinate from KNX bus. *DPT 9.004*
+  required: false
+  type: string
+address_brightness_west:
+  description: KNX group address for reading current brightness to west coordinate from KNX bus. *DPT 9.004*
+  required: false
+  type: string
+address_brightness_east:
+  description: KNX group address for reading current brightness to east coordinate from KNX bus. *DPT 9.004*
+  required: false
+  type: string
+address_wind_speed:
+  description: KNX group address for reading current wind speed from KNX bus. *DPT 9.005*
+  required: false
+  type: string
+address_rain_alarm:
+  description: KNX group address for reading if rain alarm is on/off.
+  required: false
+  type: string
+address_frost_alarm:
+  description: KNX group address for reading if frost alarm is on/off.
+  required: false
+  type: string
+address_wind_alarm:
+  description: KNX group address for reading if wind alarm is on/off.
+  required: false
+  type: string
+address_day_night:
+  description: KNX group address for reading if it's day/night.
+  required: false
+  type: string
+address_air_pressure:
+  description: KNX address reading current air pressure. *DPT 9.006*
+  required: false
+  type: string
+address_humidity:
+  description: KNX address for reading current humidity. *DPT 9.007*
+  required: false
+  type: string
+expose_sensors:
+  description: If true, exposes all sensor values as dedicated sensors to HA.
+  required: false
+  type: boolean
+  default: False
+sync_state:
+  description: Actively read the value from the bus. If `False` no GroupValueRead telegrams will be sent to the bus.
+  required: false
+  type: boolean
+  default: True
+{% endconfiguration %}