knx-light-actuator.yaml

blueprint:
  name: KNX - Light Actuator
  description: Controll Home Assistant Light entities from KNX switches.
  domain: automation
  input:
    target_light:
      name: Light
      description: The light that shall be controled.
      selector:
        target:
          entity:          
            domain: light
    feedback_light:
      name: Feedback Light
      description: The light to report back to the switch
      selector:        
        entity:          
          domain: light
    switch_address:
      name: Switch group address
      description: >
        Group address for switching the lights on and off.
        Example: '1/2/3'
    switch_address_feedback:
      name: Switch address to report feedback
      description: >
        Group address for feedback on status of the light. 
        Example: '1/2/3'
    
# no matched condition stops repeat sequence to stop dimming (dimm 0)
mode: restart
max_exceeded: silent

trigger:
  - platform: homeassistant
    event: start
    id: "initialize"
  - platform: event
    event_type: automation_reloaded
    id: "initialize"
  # when KNX integration was reloaded
  - platform: event
    event_type: service_registered
    event_data:
      domain: knx
      service: event_register
    id: "initialize"
  - platform: event
    event_type: knx_event
    event_data:
      destination: !input switch_address
      telegramtype: GroupValueWrite
    id: "switch"  

action:
  - choose:
    # TURN ON
    - conditions:
        condition: and
        conditions:
          - condition: trigger
            id: "switch"
          - "{{ trigger.event.data.data == 1 }}"
      sequence:
        - service: light.turn_on
          target: !input target_light
    # TURN OFF
    - conditions:
        condition: and
        conditions:
          - condition: trigger
            id: "switch"
          - "{{ trigger.event.data.data == 0 }}"
      sequence:
        - service: light.turn_off
          target: !input target_light    
    # INITIALIZE
    - conditions:
        condition: trigger
        id: "initialize"
      sequence:
        - service: knx.event_register
          data:
            address: !input switch_address
        - service: knx.exposure_register
          data:
            address: !input switch_address_feedback
            type: binary
            entity_id: !input target_light