core/homeassistant/components/switch/homematic.py

68 lines
1.9 KiB
Python

"""
Support for HomeMatic switches.
For more details about this platform, please refer to the documentation at
https://home-assistant.io/components/switch.homematic/
"""
import logging
from homeassistant.components.switch import SwitchDevice
from homeassistant.components.homematic import HMDevice, ATTR_DISCOVER_DEVICES
from homeassistant.const import STATE_UNKNOWN
_LOGGER = logging.getLogger(__name__)
DEPENDENCIES = ['homematic']
def setup_platform(hass, config, add_devices, discovery_info=None):
"""Set up the HomeMatic switch platform."""
if discovery_info is None:
return
devices = []
for conf in discovery_info[ATTR_DISCOVER_DEVICES]:
new_device = HMSwitch(conf)
devices.append(new_device)
add_devices(devices)
class HMSwitch(HMDevice, SwitchDevice):
"""Representation of a HomeMatic switch."""
@property
def is_on(self):
"""Return True if switch is on."""
try:
return self._hm_get_state() > 0
except TypeError:
return False
@property
def today_energy_kwh(self):
"""Return the current power usage in kWh."""
if "ENERGY_COUNTER" in self._data:
try:
return self._data["ENERGY_COUNTER"] / 1000
except ZeroDivisionError:
return 0
return None
def turn_on(self, **kwargs):
"""Turn the switch on."""
self._hmdevice.on(self._channel)
def turn_off(self, **kwargs):
"""Turn the switch off."""
self._hmdevice.off(self._channel)
def _init_data_struct(self):
"""Generate the data dictionary (self._data) from metadata."""
self._state = "STATE"
self._data.update({self._state: STATE_UNKNOWN})
# Need sensor values for SwitchPowermeter
for node in self._hmdevice.SENSORNODE:
self._data.update({node: STATE_UNKNOWN})