@bkl Awesome! Thank you for this binding. Helps to minimise rules in OH.

Thanks for help ;)
Figured out it by myself

Thank you very much for detailed description!
But I cannot understand how to send commands from OpenHab to turn relay on and off. Please direct me.
After a long time I can finally get the messages from sensors via serial connection, but not the other way.
Cheers!

Dear all,

I've stuck. Please help me to understand.
Currently I have a serial gateway and openHAB 1.7. I've managed to get controller working and send commands to openhab installed on Windows.

Now I need to understand how to convert commands from the gateway.

I have a rule

rule "Arduino sends to Openhab"
    when
        Item Arduino received update
    then
        var String lineBuffer =  Arduino.state.toString.split("\n")
        for (String line : lineBuffer) {
            var String[] message = line.split(";")
            var Integer nodeId = new Integer(message.get(0))
            var Integer childId = new Integer(message.get(1))
            var Integer msgType = new Integer(message.get(2))
            var Integer ack = new Integer(message.get(3))
            var Integer subType = new Integer(message.get(4))
            var String msg = message.get(5)
			
            if(msgType == 3 ){
                if (subType == 9){
					sendCommand(Arduino_Motion1, ON)
					pushover("Motion Detected", -1)
		} } }			
end

items:

String Arduino "Serial" {serial="COM4@115200"}
Switch Arduino_Motion1 	"Motion" <siren>

and a sitemap

sitemap home label="Home"
{

Frame label="Serial" {
Switch item=Arduino_Motion1 label="Motion Sensor"
} } 

So in debug I have following:

2015-06-01 12:51:29.154 [INFO ] [runtime.busevents             ] - Arduino state updated to 0;0;3;0;9;read: 1-1-0 s=1,c=1,t=16,pt=0,l=1:1
1;1;1;0;16;1

2015-06-01 12:51:29.156 [INFO ] [runtime.busevents             ] - Arduino_Motion1 received command ON

So I've found an example of temp sensor but not the motion...
Pushover sends me notifications when motion sensor send 0 to the gateway every minute or so. (0;0;3;0;9;read: 1-1-0 s=1,c=1,t=16,pt=0,l=1:0). I don't understand how can I separate last 0 from 1.
I know I'm on a last step, please help :)

Thank you!