@masmat I'm glad the first sensor is updating now. Please post the the thing and item definition of the light sensor and I'll look at it.
I only need the debug output from the binding so please use:

log:set DEBUG org.openhab.binding.mysensors

@masmat said in Getting MySensors MQTT Gateway working on OpenHAB 2.2 (Stable):

Number BoilerTemp "Lämminvesivaraaja [%.1f °C]" <heating> {channel="mysensors:temperature:mygateway1:temperature_1_15:temp"}

Needs to be changed to:

Number BoilerTemp "Lämminvesivaraaja [%.1f °C]" <heating> {channel="mysensors:temperature:mygateway1:BoilerTemp:temp"}

But there is something additionally amiss, because discovery is not working.
Please enable debug in the OH2 console and post the output of the initialization.
Don't spend time reinstalling, this looks like a configuration issue.

@masmat said in Getting MySensors MQTT Gateway working on OpenHAB 2.2 (Stable):

No autodiscovery, but this switches my sensors ONLINE (even ones that are not powered up ), but it's not updating the values.

Autodiscovery should work.
Does the temperature thing in OH2 get updates? Is it working?

The sensors will show up ONLINE if the connection to the broker is established, because the sensors are just a topic. There is at the moment no implementation to check if the sensors/things are really available. This could be done, but it is not implemented yet.

@jogant Good catch! I'm glad it's working now!

@jogant Indeed this looks like an error in your configuration. I suspect the MQTT configuration. Did you change the MQTT configuration according my posting above? I've also added a text to the Wiki. The name and content of the MQTT configuration differs between OpenHAB 2.2 and 2.3.

@jogant There already is a working version (2.4 SNAPSHOT) available on the marketplace and on my server. Please let me know if you expierence any problems.

@masmat please check your MQTT configuration. You're receiving an exception because it's trying to set "1883.0" for the value port.

@jogant Yeah. There are still some problems with 2.3 to fix. The binding works fine within the development IDE, but only there. I'm still looking into it.

@andre_m87 & @MasMat : I found a solution and indeed the MQTT implementation in OH2 (ESH) changed. This was a hard nut to crack, so it took me a while.

Here are the steps you need to do:

1. Rename: org.eclipse.smarthome.mqtt.cfg to org.eclipse.smarthome.mqttbroker.cfg
2. Change the content to:

name=mosquitto
host=192.168.2.3
secure=false
port=1883
username=USERNAME
password=PASSWORD
retain=false

If you're using a secure connection (SSL): change secure to true and use the correct port.

Another intersting feature in OpenHAB 2.3 is the embedded broker, so there is no need to have a separate MQTT server up and running.

@andre_m87 & @MasMat : I have the same problem here. Looks like a change in the OpenHAB MQTT implementation.
I'm working on it.