execute_if_off ??

[agsola]

I'm trying to understand who to use execute_if_off.
I can't find in any device, I can't find in the configuration.

However, I've seen in different issues like:
Koenkk/zigbee-herdsman-converters#2284
Koenkk/zigbee-herdsman-converters#4192
nurikk/zigbee2mqtt-frontend#356

I have some LED drivers and IKEA Tradfri bulbs.
In the LED when I change the light temperature while the device is turned off, when turning on the temperature is changed.
However, in the Tradfri bulbs, when I change the temperature while the bulbs are off, when turning on the don't change, and they keep the last temperature value.
However, none of them expose the "execute_if_off".

[sjorge]

You are correct that some level and color options are not in the expose data (anymore).

Weather a bulb supports it or not is a mixed bag, Trådfri bulbs on the ZB3 firmware and Hue (With BT) seem to support it though, there is also still a weird rendering issue with expose things with subkeys in the frontend is still a problem too.

Currently for color_options only the execute_if_off bit has support, although this could be expanded to do some of the color_temp linking to brightness options in the future, I never got them to work so I didn't have anything to test with so they are currently not implemented.

There is no separate level_options, the execute_if_off for that got implemented under level_config which sets a lot of other things too.

I'm not sure which is the better approach tbh, level_config has a bunch of stuff as subkeys, include execute_if_off which get written to the options attribute, it would get complicated if other options bit-fields ever get implemented, less so for color_options as this is a separate property. But that does mean things like the color_temp_startup are separate properties also instead of all living under a color_config property as sub keys.

History aside, you can configure it like this:

mosquitto_pub -t zigbee2mqtt/<friendly_name>/set/color_options -m '{"execute_if_off": true}'
mosquitto_pub -t zigbee2mqtt/<friendly_name>/set/level_config -m '{"execute_if_off": true}'

When enabled (and if the bulb supports it) you can now change the color_temp, color, brightness without the bulb being on or turning on when doing so.

[agsola]

Thank you so much @sjorge !!
execute_if_off works great for color temperature, however, with brightness options I can't get it to work.

I had two different brands, Tradfri bulbs and Iluminize LED drivers. Iluminize by default were able to execute_if_off, now all my devices are able to execute if off.

Regarding the brigthness, I've tried first to send the commands of color_options and level_config.
After that, I've tried with some commands like:

mosquitto_pub -t zigbee2mqtt/<friendly_name>/set -m '{"brightness":15}'
mosquitto_pub -t zigbee2mqtt/<friendly_name>/set -m '{"level_config":{"execute_if_off":true},"brightness":15}'
mosquitto_pub -t zigbee2mqtt/<friendly_name>/set -m '{"level_config":{"execute_if_off":true},"brightness":15, "state":"OFF"}'

But none of them worked. All of them turn the light on except for the last one that only turned off the light, ignoring the brightness. So I find no option to change the brightness while keeping the light off. Any idea of how to do it?

[sjorge]

Interesting, I have the same result... I did some more poking around the spec

I think we're hitting this in the longer list of conditions: The On/Off cluster exists on the same endpoint as this cluster.

All the bulbs I have have an genOnOff cluster on the same endpoint as the genLevelCtrl.

cc: @Koenkk as your a bit better than me at deciphering the vagueness/contraditions of the ZCL at times.

[agsola]

It makes sense. According to the specs, this shouldn't work right now.
Could it make sense to use a separate cluster to change color brightness with no "On/Off cluster"?