KNX integration weatherstation - Day = 0 and night = 1

1

I’m using the KNX integration for integrating my KNX Weatherstation with the follow YAML code:

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_brightness_north: "7/0/11"
      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"
      sync_state: true

But i’m using the day/night object in an opposite way (Day=0 and Night =1). Then I can use it also directly in a KNX group address for switching lamps ON at night. But Home Assistant thinks now At night that it’s Day and the other way around.

Is there a way to specify within the Yaml code that Day=0 and Night=1?

2

Hi :wave:!

Its not supported directly. KNX specification defines it that way.

You may use KNX internal inversion and a new GA. Or use a HA binary_sensor and an automation to invert it and send it to the bus with knx.send service. Or an inverted binary_sensor and expose it. (Maybe even use an xknx internal-GA).

3

Sorry i’m a real beginner in Home Assistant. For me it’s important that KNX works as stably as possible, and it doesn’t depend on Home Assistant to turn lights on/off when night falls.

I can only set the KNX object in 1 way and since a 1 value is also an ON value for my switching actor, this works perfectly.

Does Home-Assistant have an option to adjust this value at the weather station?

If I create a Binary sensor with invertion within Home Assistant, it won’t get to the “weather map”, right?

4

Many KNX actuators provide simple logics eg. for inverting binary payloads. You can use this to react on your existing GA and send the inverted signal to a new GA.

Same can be done with HA (in many different ways). Here is an example:
Set up a HA KNX event and use the HA knx_event event as trigger for an automation.

trigger:
  - platform: event
    event_type: knx_event
    event_data:
      destination: "1/2/3"

Use the event trigger payload data trigger.event.data.data, invert it in a template and send it back to the bus to a new GA with knx.send.

Use this new GA in the configuration of your weather entity. (syncing the state will fail - but that’s solveable with either expose or a more advanced automation).

Thats an option too (but creates an additional HA entity). Use expose to directly send that binary sensors state to the bus again (to a new GA). The weather entity will feed from this GA then.

All this can be done with “internal GAs” too - if you don’t want to have HA send the inverted state to the bus, but just process it internally. Just use some string prepended by “i-” as GA (eg. “i-inverted-day-night”).