### Start Virtual CCU

Source: https://github.com/danielperna84/pyhomematic/wiki/Contributing-and-development-for-pyhomematic

Execute this script to start the virtual CCU for testing pyhomematic modifications.

```bash
/home/user/devccu.py
```

--------------------------------

### Connect and Control Homematic Devices

Source: https://github.com/danielperna84/pyhomematic/blob/master/README.rst

This example demonstrates connecting to a Homegear server, controlling a device, querying its state, setting up event callbacks, and stopping the server. The server must be stopped to prevent Python from hanging.

```python
def syscb(src, *args):
    print(src)
    for arg in args:
        print(arg)
def cb1(address, interface_id, key, value):
    print("CALLBACK WITH CHANNELS: %s, %s, %s, %s" % (address, interface_id, key, value))
def cb2(address, interface_id, key, value):
    print("CALLBACK WITHOUT CHANNELS: %s, %s, %s, %s" % (address, interface_id, key, value))
from pyhomematic import HMConnection
pyhomematic = HMConnection(local="192.168.1.12", localport=7080, remote="192.168.1.23", remoteport=2001, systemcallback=syscb) # Create server thread
pyhomematic.start() # Start server thread, connect to homegear, initialize to receive events
pyhomematic.devices['address_of_rollershutter_device'].move_down() # Move rollershutter down
pyhomematic.devices_all['address_of_doorcontact:1'].getValue("STATE") # True or False, depending on state
pyhomematic.devices['address_of_doorcontact'].setEventCallback(cb1) # Add first callback
pyhomematic.devices['address_of_doorcontact'].setEventCallback(cb2, bequeath=False) # Add second callback
pyhomematic.stop() # Shutdown to finish the server thread and quit
```

--------------------------------

### Add New Device Class in Home Assistant

Source: https://github.com/danielperna84/pyhomematic/wiki/Contributing-and-development-for-pyhomematic

Modify the Home Assistant core integration to include a new device class. This is necessary when introducing new device types to pyhomematic.

```python
homeassistant/components/homematic/const.py#L42
```

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