111 lines
3.3 KiB
Python
111 lines
3.3 KiB
Python
"""
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Support for Z-Wave lights.
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For more details about this platform, please refer to the documentation at
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https://home-assistant.io/components/light.zwave/
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"""
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# Because we do not compile openzwave on CI
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# pylint: disable=import-error
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from threading import Timer
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from homeassistant.components.light import ATTR_BRIGHTNESS, DOMAIN, Light
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from homeassistant.components import zwave
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from homeassistant.const import STATE_OFF, STATE_ON
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def setup_platform(hass, config, add_devices, discovery_info=None):
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"""Find and add Z-Wave lights."""
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if discovery_info is None or zwave.NETWORK is None:
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return
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node = zwave.NETWORK.nodes[discovery_info[zwave.ATTR_NODE_ID]]
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value = node.values[discovery_info[zwave.ATTR_VALUE_ID]]
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if value.command_class != zwave.COMMAND_CLASS_SWITCH_MULTILEVEL:
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return
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if value.type != zwave.TYPE_BYTE:
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return
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if value.genre != zwave.GENRE_USER:
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return
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value.set_change_verified(False)
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add_devices([ZwaveDimmer(value)])
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def brightness_state(value):
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"""Return the brightness and state."""
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if value.data > 0:
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return (value.data / 99) * 255, STATE_ON
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else:
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return 255, STATE_OFF
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class ZwaveDimmer(zwave.ZWaveDeviceEntity, Light):
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"""Representation of a Z-Wave dimmer."""
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# pylint: disable=too-many-arguments
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def __init__(self, value):
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"""Initialize the light."""
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from openzwave.network import ZWaveNetwork
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from pydispatch import dispatcher
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zwave.ZWaveDeviceEntity.__init__(self, value, DOMAIN)
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self._brightness, self._state = brightness_state(value)
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# Used for value change event handling
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self._refreshing = False
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self._timer = None
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dispatcher.connect(
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self._value_changed, ZWaveNetwork.SIGNAL_VALUE_CHANGED)
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def _value_changed(self, value):
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"""Called when a value has changed on the network."""
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if self._value.value_id != value.value_id:
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return
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if self._refreshing:
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self._refreshing = False
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self._brightness, self._state = brightness_state(value)
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else:
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def _refresh_value():
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"""Used timer callback for delayed value refresh."""
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self._refreshing = True
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self._value.refresh()
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if self._timer is not None and self._timer.isAlive():
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self._timer.cancel()
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self._timer = Timer(2, _refresh_value)
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self._timer.start()
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self.update_ha_state()
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@property
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def brightness(self):
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"""Return the brightness of this light between 0..255."""
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return self._brightness
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@property
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def is_on(self):
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"""Return true if device is on."""
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return self._state == STATE_ON
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def turn_on(self, **kwargs):
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"""Turn the device on."""
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if ATTR_BRIGHTNESS in kwargs:
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self._brightness = kwargs[ATTR_BRIGHTNESS]
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# Zwave multilevel switches use a range of [0, 99] to control
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# brightness.
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brightness = int((self._brightness / 255) * 99)
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if self._value.node.set_dimmer(self._value.value_id, brightness):
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self._state = STATE_ON
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def turn_off(self, **kwargs):
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"""Turn the device off."""
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if self._value.node.set_dimmer(self._value.value_id, 0):
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self._state = STATE_OFF
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