Can I set DISPLAY_BRIGHTNESS of my HomeMatic device within openHAB (Homegear/hmland)

Add-ons Bindings
1

I would like to set the brightness level of the leds of my HomeMatic HM-OU-LED16 from within openHAB. I know the level can be set from 0-15 using the software ‘HomeMatic-Komponenten konfigurieren’. When I do so, my homegear.log shows

10/13/15 19:21:35.420 RPC Server (Port 2001): Info: Connection to client number 2843 closed (3).
10/13/15 19:21:36.754 RPC Server (Port 2001): Info: Connection from 192.168.1.64:55127 accepted. Client number: 2844
10/13/15 19:21:36.755 RPC Server (Port 2001): Info: Client number 2844 is calling RPC method: getParamsetDescription Parameters:
(String) KEQ0123329
(String) MASTER
10/13/15 19:21:36.762 RPC Server (Port 2001): Info: Client number 2844 is calling RPC method: putParamset Parameters:
(String) KEQ0123329
(String) MASTER
(Struct length=3)
{
  [DISPLAY_BRIGHTNESS]
  {
    (Integer) 4
  }
  [DISPLAY_ENERGYOPTIONS]
  {
    (Float) 44
  }
  [LOCAL_RESET_DISABLE]
  {
    (Boolean) 0
  }
}
10/13/15 19:21:36.764 Module HomeMatic BidCoS: Info: Parameter DISPLAY_BRIGHTNESS of peer 3 and channel 0 was set to 0x04.
10/13/15 19:21:36.765 Module HomeMatic BidCoS: Info: Parameter DISPLAY_ENERGYOPTIONS of peer 3 and channel 0 was set to 0x2C.
10/13/15 19:21:36.766 Module HomeMatic BidCoS: Info: Parameter LOCAL_RESET_DISABLE of peer 3 and channel 0 was set to 0x00.
10/13/15 19:21:36.771 Info: Calling XML RPC method "system.multicall" on server binary://192.168.1.39 and port 9123.

My openHAB log shows:

2015-10-13 22:17:42.792 [DEBUG] [.b.h.i.c.HomematicCommunicator] - Received command 15 for item HomematicLed16_B
2015-10-13 22:17:42.794 [WARN ] [.b.h.i.c.HomematicCommunicator] - Can't find DatapointConfig[address=KEQ0123329,channel=0,parameter=DISPLAY_BRIGHTNESS], value is not published to Homematic server!

Item-file:

Number HomematicLed16_B "HomeMatic led [MAP(nl_offline.map):%s]" {homematic="address=KEQ0123329, channel=0, parameter=DISPLAY_BRIGHTNESS"}

When I ask Homegear what the options for this device are through the commandline, it tells me:

Channel: 0
        {
                [CENTRAL_ADDRESS_BYTE_2]: 00
                [CENTRAL_ADDRESS_BYTE_3]: 00
                [CENTRAL_ADDRESS_BYTE_1]: 00
                [PAIRED_TO_CENTRAL]: 00
                [ROAMING]: 00
                [POLLING_INTERVAL]: 3c
                [LOCAL_RESET_DISABLE]: 00
                [POLLING]: 00
                [DISPLAY_BRIGHTNESS]: 06
                [DISPLAY_ENERGYOPTIONS]: 00

So the option is somewhere. I found a file somewhere in the devices folder called rf_ou_led16_ge_v1_1.xml that also mentions this option, but I cannot figure out what to do now, how to pinpoint this any further.

2

The bad: this is a datapoint from the MASTER paramset. The 1.x binding only supports datapoints from the VALUES paramset.

The good: the Homematic binding for OH2 also supports the MASTER paramset and i will relase it soon, more info

3

That is excellent news. Thank you for your explanation. Then I will postpone finetuning of my led statusboard till after the upgrade. I would like to lower the brightness setting during the nights. It’s good to know that this will be possible in the future.