100 lines
2.8 KiB
Python
100 lines
2.8 KiB
Python
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"""
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Sensors on Zigbee Home Automation networks.
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For more details on this platform, please refer to the documentation
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at https://home-assistant.io/components/sensor.zha/
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"""
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import asyncio
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import logging
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from homeassistant.components.sensor import DOMAIN
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from homeassistant.components import zha
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from homeassistant.const import TEMP_CELSIUS
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from homeassistant.util.temperature import convert as convert_temperature
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_LOGGER = logging.getLogger(__name__)
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DEPENDENCIES = ['zha']
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@asyncio.coroutine
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def async_setup_platform(hass, config, async_add_devices, discovery_info=None):
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"""Setup Zigbee Home Automation sensors."""
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discovery_info = zha.get_discovery_info(hass, discovery_info)
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if discovery_info is None:
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return
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sensor = yield from make_sensor(discovery_info)
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async_add_devices([sensor])
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@asyncio.coroutine
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def make_sensor(discovery_info):
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"""Factory function for ZHA sensors."""
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from bellows.zigbee import zcl
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if isinstance(discovery_info['clusters'][0],
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zcl.clusters.measurement.TemperatureMeasurement):
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sensor = TemperatureSensor(**discovery_info)
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else:
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sensor = Sensor(**discovery_info)
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clusters = discovery_info['clusters']
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attr = sensor.value_attribute
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if discovery_info['new_join']:
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cluster = clusters[0]
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yield from cluster.bind()
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yield from cluster.configure_reporting(
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attr,
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300,
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600,
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sensor.min_reportable_change,
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)
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return sensor
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class Sensor(zha.Entity):
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"""Base ZHA sensor."""
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_domain = DOMAIN
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value_attribute = 0
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min_reportable_change = 1
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def __init__(self, **kwargs):
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"""Initialize ZHA sensor."""
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super().__init__(**kwargs)
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@property
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def state(self) -> str:
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"""Return the state of the entity."""
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if isinstance(self._state, float):
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return str(round(self._state, 2))
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return self._state
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def attribute_updated(self, attribute, value):
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"""Handle attribute update from device."""
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_LOGGER.debug("Attribute updated: %s %s %s", self, attribute, value)
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if attribute == self.value_attribute:
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self._state = value
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self.schedule_update_ha_state()
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class TemperatureSensor(Sensor):
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"""ZHA temperature sensor."""
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min_reportable_change = 50 # 0.5'C
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@property
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def unit_of_measurement(self):
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"""Return the unit of measurement of this entityy."""
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return self.hass.config.units.temperature_unit
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@property
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def state(self):
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"""Return the state of the entity."""
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if self._state == 'unknown':
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return 'unknown'
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celsius = round(float(self._state) / 100, 1)
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return convert_temperature(celsius, TEMP_CELSIUS,
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self.unit_of_measurement)
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