setting battery level with API/JSON and/or MQTT Topic is solved

[edgarhildering]

My request is simple: I would like to set the battery level with an MQTT message. Example:

topic= Domoticz/in
message = { "idx" : <idx>, "BatteryLevel" : <blevel> }

with 0 <= blevel <= 100

a comparable JSON approach would be:

/json.htm?type=command&param=udevice&idx=IDX&batterylevel=<BATTERLYLEVEL>

Furthermore it is not desirable that updates of a device that do not have battery level data force the battery level to 255. Initially this is fine, but don't touch it if there is no data.

thanks in advance, --Edgar

[waltervl]

Did you already try to add something as below in the update device command?

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 "Battery" : 100, "RSSI" : 12,

see also
https://www.domoticz.com/wiki/MQTT#MQTT_to_Domoticz

API commands are already there: https://www.domoticz.com/wiki/Domoticz_ ... y_level.29


So what exactly are you missing?

[edgarhildering]

after sending:

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mosquitto_pub -h localhost -p 1883 -t "domoticz/in" -m "{\"idx\": 1402, \"BatteryLevel\":75}"

I get this response

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2023-10-03 18:43:57.259 Error: ge-MQTT: Invalid/Unhandled data received! (Topic: domoticz/in, Message: {"idx": 1402, "BatteryLevel":75})

open for MQTT-suggestions!

[waltervl]

Try using

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mosquitto_pub -h localhost -p 1883 -t "domoticz/in" -m "{\"idx\": 1402, \"Battery\":75}"

But as like the API Battery and RSSI are optional parameters for an device update command you perhaps have to add a current nvalue or svalue to it.

[FireWizard]

Hello @edgarhildering,

It is not "BatteryLevel", but just "Battery".

Try this one.

Regards

[edgarhildering]

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2023-10-03 19:27:35.669 Error: ge-MQTT: Invalid/Unhandled data received! (Topic: domoticz/in, Message: {"idx": 1402, "Battery":75})

That doesn't look better... I also tried:

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http://ge-domoticz/json.htm?type=command&param=udevice&idx=1402&batterylevel=75
http://ge-domoticz/json.htm?type=command&param=udevice&idx=1402&battery=75

respons in both cases:

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{
	"status" : "ERR"
}

[waltervl]

As mentioned before, like on the api Battery is an additional parameter so you cannot set the battery level only. You have to update the sensor with a valid value AND update the battery level.

So while updating your sensor, add the battery parameter to the statement where you normally update your sensor value with. And "BatteryLevel" will never work so forget it please.

[edgarhildering]

Hi @waltervl, thanks for the explanation. This works like charm when sending a message with MQTT with all other parameters present.

Then there is no need to add this feature.

I must have overlooked the remark on additional parameters. Maybe the header of that section in the wiki needs 'some improvement'. Furthermore, some explanation of the term 'the above commands' is not an unnecessary luxury, as is an example of an update of a sensor. I'll see what I can do about that.

Thanks & greetings, --Edgar

[waltervl]

Glad it works, I will add it too to the mqtt wiki.