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https://github.com/home-assistant/core.git
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27b1d448a3
* Changed version of "HAP-python" to "v1.1.7" * Updated acc file to simplify init calls * Code refactored and '°F' temp Sensors added * Changed call to 'HomeAccessory' and 'HomeBridge' * Extended function of 'add_preload_service' to add additional characteristics * Added function to override characteristic property values * TemperatureSensor * Added unit * Added calc_temperature * Updated tests
74 lines
2.4 KiB
Python
74 lines
2.4 KiB
Python
"""Class to hold all sensor accessories."""
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import logging
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from homeassistant.const import (
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STATE_UNKNOWN, ATTR_UNIT_OF_MEASUREMENT, TEMP_FAHRENHEIT, TEMP_CELSIUS)
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from homeassistant.helpers.event import async_track_state_change
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from . import TYPES
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from .accessories import (
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HomeAccessory, add_preload_service, override_properties)
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from .const import (
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SERV_TEMPERATURE_SENSOR, CHAR_CURRENT_TEMPERATURE, PROP_CELSIUS)
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_LOGGER = logging.getLogger(__name__)
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def calc_temperature(state, unit=TEMP_CELSIUS):
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"""Calculate temperature from state and unit.
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Always return temperature as Celsius value.
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Conversion is handled on the device.
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"""
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if state == STATE_UNKNOWN:
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return None
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if unit == TEMP_FAHRENHEIT:
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value = round((float(state) - 32) / 1.8, 2)
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else:
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value = float(state)
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return value
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@TYPES.register('TemperatureSensor')
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class TemperatureSensor(HomeAccessory):
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"""Generate a TemperatureSensor accessory for a temperature sensor.
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Sensor entity must return temperature in °C, °F or STATE_UNKNOWN.
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"""
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def __init__(self, hass, entity_id, display_name):
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"""Initialize a TemperatureSensor accessory object."""
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super().__init__(display_name, entity_id, 'SENSOR')
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self._hass = hass
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self._entity_id = entity_id
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self.serv_temp = add_preload_service(self, SERV_TEMPERATURE_SENSOR)
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self.char_temp = self.serv_temp. \
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get_characteristic(CHAR_CURRENT_TEMPERATURE)
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override_properties(self.char_temp, PROP_CELSIUS)
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self.unit = None
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def run(self):
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"""Method called be object after driver is started."""
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state = self._hass.states.get(self._entity_id)
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self.update_temperature(new_state=state)
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async_track_state_change(
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self._hass, self._entity_id, self.update_temperature)
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def update_temperature(self, entity_id=None, old_state=None,
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new_state=None):
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"""Update temperature after state changed."""
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if new_state is None:
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return
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unit = new_state.attributes[ATTR_UNIT_OF_MEASUREMENT]
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temperature = calc_temperature(new_state.state, unit)
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if temperature is not None:
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self.char_temp.set_value(temperature)
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_LOGGER.debug("%s: Current temperature set to %d°C",
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self._entity_id, temperature)
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