Trigger automation with KNX Scene Event

wao · October 11, 2022, 8:37pm

Hi Matthias,
I’m using the blueprint you mentioned and it’s working fine, many thanks! I just created another automation using the knx_event as trigger and am still fighting with the data part. The called path will follow the turn_off command where the data is 0 although the data is 1.

What I captured on the bus:

event_type: knx_event
data:
  data: 1
  destination: 2/4/0
  direction: Incoming
  value: null
  source: 1.1.43
  telegramtype: GroupValueWrite
origin: LOCAL
time_fired: "2022-10-11T20:35:50.933339+00:00"
context:
  id: 01GF4C5H0N5Q2J95JWF2VAQ47F
  parent_id: null
  user_id: null

This is the mentioned automation:

alias: "KNX event: Presence detection ground floor (2/4/0)"
description: Presence detection ground floor (with night light)
trigger:
  - platform: event
    event_type: knx_event
    event_data:
      destination: 2/4/0
      telegramtype: GroupValueWrite
condition: []
action:
  - choose:
      - conditions:
          - condition: state
            entity_id: input_boolean.night_mode
            state: "on"
        sequence:
          - if:
              - condition: template
                value_template: trigger.event.data.data == 1
                alias: KNX bus data == 1 (ON)
            then:
              - service: light.turn_on
                data_template:
                  brightness_pct: |
                    {{ states('input_number.night_light_brightness') | float }}
                target:
                  entity_id:
                    - light.bath_gf_nightlight
                    - light.hall_gf_nightlight
            else:
              - service: light.turn_off
                data: {}
                target:
                  entity_id:
                    - light.bath_gf_nightlight
                    - light.hall_gf_nightlight
    default:
      - if:
          - condition: template
            value_template: trigger.event.data.data == 1
            alias: KNX bus data == 1 (ON)
        then:
          - service: light.turn_on
            data: {}
            target:
              entity_id: light.hall_gf
        else:
          - service: light.turn_off
            data: {}
            target:
              entity_id: light.hall_gf
    alias: Select nightmode (on or off)

Any idea what I’m missing?

farmio · October 11, 2022, 9:05pm

first thing that comes to my mind would be to wrap this in "{{ }}".

wao · October 11, 2022, 9:12pm

Awesome, that did the trick! Thanks!!!

value_template: "{{trigger.event.data.data == 1}}"

Guess am more used to strongly typed languages and compiler errors

Geolin · November 8, 2023, 9:26pm

Hello,

I try to capture data for a KNX Scene. This is what I get from the knx_event:

event_type: knx_event
data:
  data:
    - 1
  destination: 0/3/0
  direction: Incoming
  value: null
  source: 1.1.252
  telegramtype: GroupValueWrite
origin: LOCAL
time_fired: "2023-11-08T21:21:33.278669+00:00"
context:
  id: 01HERCZP2YMK0555H6W8RM7K0Z
  parent_id: null
  user_id: null

Any idea what I need to put in the template ? Currently I am using:

{{trigger.event.data.data[0] == 1}}

As you can see in the knx_event log the data[0] field got “- 1” as value. No clue how to put that in the template.

Thanks for your help!

farmio · November 8, 2023, 10:47pm

Hi !

Thats not 100% correct.

The trigger.event.data.data filed received a list with 1 item: 1.
The value of this item trigger.event.data.data[0] is 1.

Mind that data[0] addresses the first item of the list data.

  data:
    - 1

is yaml representation for a list with 1 item with value 1.

This looks OK after all.
It still depends on your trigger - if you already put the data field in the trigger, it will only fire if it matches.

Geolin · November 8, 2023, 11:20pm

Ah, thank you. I didn’t know that.

So the whole yaml looks like this:

trigger:
  - platform: event
    event_type: knx_event
    event_data:
      destination: 0/3/0
condition: []
action:
  - choose:
      - conditions:
          - condition: template
            value_template: "{{trigger.event.data.data[0] == 0}}"
        sequence:
          - service: switch.turn_off
            data: {}
            target:
              entity_id: input_boolean.knx_0_3_0_szene_schalten
      - conditions:
          - condition: template
            value_template: "{{trigger.event.data.data[1] == 1}}"
        sequence:
          - service: switch.turn_on
            data: {}
            target:
              entity_id: input_boolean.knx_0_3_0_szene_schalten
mode: single

I was testing it with these settings but I didn’t see that any of the conditions were true when the event for 0/3/0 came.
I have to test it again.

MandeepR · April 1, 2024, 2:30pm

Dear @farmio

After a lot of reading I am trying to trigger an automation based on KNX event trigger but have not succeeded yet.

The knx event records as:

event_type: knx_event
data:
  data:
    - 0
  destination: 5/0/0
  direction: Incoming
  value: null
  source: 1.2.9
  telegramtype: GroupValueWrite
origin: LOCAL
time_fired: "2024-04-01T12:09:13.659815+00:00"
context:
  id: 01HTCS0J5VFPEVJNSC3QQ2XABG
  parent_id: null
  user_id: null

I have used the following automations but none of it worked.

alias: Test Automation
description: ""
trigger:
  - platform: event
    event_type: knx_event
condition:
  - condition: template
    value_template: >
      "{{ trigger.event.destination == '5/0/0' and trigger.event.data.data[0] ==
      0 }}"
action:
  - service: light.turn_on
    target:
      entity_id:
        - light.gf_kavya_dresser_all_lights
    data:
      brightness: 255
mode: single

alias: Test Automation
description: ""
trigger:
  - platform: event
    event_type: knx_event
    event_data:
      data:
        - 0
condition: []
action:
  - service: light.turn_on
    target:
      entity_id:
        - light.gf_kavya_dresser_all_lights
    data:
      brightness: 255
mode: single

Another one:

alias: Automation testing
description: ""
trigger:
  - platform: device
    domain: knx
    device_id: 6a0d0ed7f6c3a8d2e878bca5effad87b
    type: telegram
    destination:
      - 5/0/0
condition:
  - condition: template
    value_template: "\"{{trigger.event.data.data[0] == 0}}\""
action:
  - service: light.turn_on
    metadata: {}
    data:
      brightness: 255
    target:
      entity_id: light.gf_kavya_bedroom_ll3_both_paired
mode: single

I have included the following in the configuration. I can see the blue line on trigger in the above options where I am using condition so the configuration for knx event seems to be working.

knx:
  event:
  - address:
      - "5/0/0"

Can you please help me make it work.

farmio · April 1, 2024, 3:48pm

If you use

Can’t work since I think you need to use trigger.event.data.destination…

Is not an event so

No .event there, and I don’t know what the "\" is for. Click on the header when a telegram comes in to see the data structure. See Home Assistant - KNX: trigger actions from a KNX switch

MandeepR · April 1, 2024, 4:41pm

Thanks for our prompt reply @farmio .

Based on the video you sent, I checked the variables of the trigger:

variables:
  trigger:
    id: "0"
    idx: "0"
    alias: null
    destination: 5/0/0
    destination_name: ""
    direction: Incoming
    dpt_main: null
    dpt_sub: null
    dpt_name: null
    payload:
      - 0
    source: 1.2.9
    source_name: ""
    telegramtype: GroupValueWrite
    timestamp: "2024-04-01T22:00:59.171126+05:30"
    unit: null
    value: null
context: null

And changed the automation to the below but it did not work.

alias: Automation testing
description: ""
trigger:
  - platform: device
    domain: knx
    device_id: 6a0d0ed7f6c3a8d2e878bca5effad87b
    type: telegram
    destination:
      - 5/0/0
condition: []
action:
  - choose:
      - conditions:
          - condition: template
            value_template: "{{ trigger.payload == 0 }}"
        sequence:
          - service: light.turn_on
            target:
              entity_id: light.gf_kavya_dresser_all_lights
            data:
              brightness: 255
mode: single

I tried the following which also did not work.

alias: Automation testing
description: ""
trigger:
  - platform: event
    event_type: ""
condition:
  - condition: template
    value_template: >-
      "{{ trigger.event.data.destination == '5/0/0' and
      trigger.event.data.data[0] == 0 }}"
action:
  - service: light.turn_on
    target:
      entity_id:
        - light.gf_kavya_dresser_all_lights
    data:
      brightness: 255
mode: single

If it makes any difference, I am using a scene group address from KNX.

farmio · April 1, 2024, 5:21pm

This expects a list with 1 item. It’s only a string though so you’d need to use

    destination: 5/0/0

MandeepR · April 1, 2024, 6:32pm

Thanks @farmio

Tried the following but did not work.

alias: Automation testing
description: ""
trigger:
  - platform: device
    domain: knx
    device_id: 6a0d0ed7f6c3a8d2e878bca5effad87b
    type: telegram
    destination: 5/0/0
condition: []
action:
  - choose:
      - conditions:
          - condition: template
            value_template: "{{ trigger.payload == 0 }}"
        sequence:
          - service: light.turn_on
            target:
              entity_id: light.gf_kavya_dresser_all_lights
            data:
              brightness: 255
mode: single

farmio · April 1, 2024, 6:39pm

But your payload seems to be a list

I’d recommend to read some yaml tutorials before you move on.

MandeepR · April 1, 2024, 7:04pm

Thanks for directing me there. It worked now.

{{ trigger.payload[0] == 0 }}