Add a binding for siemens Hvac interface (OZW672)

[lo92fr]

Hello,

This pull request is about adding a binding for siemens Hvac interface OZW672 (https://hit.sbt.siemens.com/RWD/app.aspx?rc=FR&lang=fr&module=Catalog&action=ShowProduct&key=BPZ:OZW672.01)

The OZW672 is a ethernet bridge for the LSB bus of Hvac device.
It implements a web interface that enable reading and setting of differents hvac parameters.
OZW672 also support a REST api.

This binding use this REST api to integrate OZW672 into openhab.

Setup:
The binding support autodiscovery of the OZW672 interface using upnp.
After a few minutes, you should see the OZW672 bridge into your Inbox.
If not, power off and up OZW672.
You can also add the bridge manually.

After adding the bridge, you will have to go to bridge parameters, setting the password for the OZW672, and then restart openhab.
On restart, OZW672 will do autodiscovery phase from you installation during initialization.
This can be a little long : ~2 to 5 minutes depending of your installation.

After OZW672 bridge come up again, go back again to the "things" page of openhab.
Click on the add button, then click on the "siemensHvac" binding, and on the next page click on the "scan" button.
After a few second, openhab should list all you devices connect to the LSB bus.
If you have a simple home Hvac installation, it will generally find only one device.
Most common name for this device are something like "RVS41xxx.yyy".
This device represents the main controler inside your Hvac device.

After you add this RVS to your system, you can go into it, and Channels tabs will expose all your hvac settings.
Structure of the Channels should be the same as the one on the LCD screen of your Hvac device.
You may have a lot more of items that on your LCD screen because the device exposte all items, even the one for "specialist" guys.

Best regards,
Laurent.

[lo92fr]

Hello Isiepel,

I don't have any news about the pull request integration.
Do you know if it's just a question of missing time, or if there is anything wrong with it ?

Thanks,
Laurent.