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"""Example for running a callback when a devices state changed."""
import asyncio
from xknx import XKNX
from xknx.devices import Light
from xknx.io import ConnectionConfig, ConnectionType
def light_callback(light: Light) -> None:
"""Run callback when the light changed any of its state."""
print(f"{light.name} - {light.state}")
async def main() -> None:
"""Connect to KNX/IP bus, turn on Light device and wait."""
xknx = XKNX(
connection_config=ConnectionConfig(
gateway_ip="10.1.0.41",
connection_type=ConnectionType.TUNNELING_TCP,
),
)
await xknx.start()
light = Light(
xknx,
name="TestLight",
group_address_switch="1/1/45",
group_address_switch_state="1/0/45",
device_updated_cb=light_callback,
)
xknx.devices.async_add(light)
# turn on light and listen for 10 seconds for changes
await light.set_on()
await asyncio.sleep(10)
await xknx.stop()
asyncio.run(main())
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