140 lines
4.3 KiB
Python
140 lines
4.3 KiB
Python
"""Support for DHT and DS18B20 sensors attached to a Konnected device."""
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import logging
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from homeassistant.const import (
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CONF_DEVICES,
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CONF_NAME,
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CONF_PIN,
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CONF_SENSORS,
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CONF_TYPE,
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DEVICE_CLASS_HUMIDITY,
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DEVICE_CLASS_TEMPERATURE,
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TEMP_CELSIUS,
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)
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from homeassistant.core import callback
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from homeassistant.helpers.dispatcher import async_dispatcher_connect
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from homeassistant.helpers.entity import Entity
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from .const import DOMAIN as KONNECTED_DOMAIN, SIGNAL_DS18B20_NEW, SIGNAL_SENSOR_UPDATE
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_LOGGER = logging.getLogger(__name__)
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SENSOR_TYPES = {
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DEVICE_CLASS_TEMPERATURE: ["Temperature", TEMP_CELSIUS],
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DEVICE_CLASS_HUMIDITY: ["Humidity", "%"],
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}
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async def async_setup_platform(hass, config, async_add_entities, discovery_info=None):
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"""Set up sensors attached to a Konnected device."""
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if discovery_info is None:
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return
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data = hass.data[KONNECTED_DOMAIN]
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device_id = discovery_info["device_id"]
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sensors = []
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# Initialize all DHT sensors.
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dht_sensors = [
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sensor
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for sensor in data[CONF_DEVICES][device_id][CONF_SENSORS]
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if sensor[CONF_TYPE] == "dht"
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]
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for sensor in dht_sensors:
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sensors.append(KonnectedSensor(device_id, sensor, DEVICE_CLASS_TEMPERATURE))
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sensors.append(KonnectedSensor(device_id, sensor, DEVICE_CLASS_HUMIDITY))
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async_add_entities(sensors)
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@callback
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def async_add_ds18b20(attrs):
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"""Add new KonnectedSensor representing a ds18b20 sensor."""
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sensor_config = next(
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(
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s
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for s in data[CONF_DEVICES][device_id][CONF_SENSORS]
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if s[CONF_TYPE] == "ds18b20" and s[CONF_PIN] == attrs.get(CONF_PIN)
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),
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None,
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)
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async_add_entities(
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[
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KonnectedSensor(
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device_id,
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sensor_config,
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DEVICE_CLASS_TEMPERATURE,
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addr=attrs.get("addr"),
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initial_state=attrs.get("temp"),
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)
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],
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True,
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)
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# DS18B20 sensors entities are initialized when they report for the first
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# time. Set up a listener for that signal from the Konnected component.
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async_dispatcher_connect(hass, SIGNAL_DS18B20_NEW, async_add_ds18b20)
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class KonnectedSensor(Entity):
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"""Represents a Konnected DHT Sensor."""
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def __init__(self, device_id, data, sensor_type, addr=None, initial_state=None):
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"""Initialize the entity for a single sensor_type."""
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self._addr = addr
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self._data = data
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self._device_id = device_id
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self._type = sensor_type
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self._pin_num = self._data.get(CONF_PIN)
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self._unit_of_measurement = SENSOR_TYPES[sensor_type][1]
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self._unique_id = addr or "{}-{}-{}".format(
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device_id, self._pin_num, sensor_type
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)
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# set initial state if known at initialization
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self._state = initial_state
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if self._state:
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self._state = round(float(self._state), 1)
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# set entity name if given
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self._name = self._data.get(CONF_NAME)
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if self._name:
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self._name += " " + SENSOR_TYPES[sensor_type][0]
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@property
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def unique_id(self) -> str:
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"""Return the unique id."""
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return self._unique_id
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@property
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def name(self):
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"""Return the name of the sensor."""
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return self._name
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@property
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def state(self):
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"""Return the state of the sensor."""
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return self._state
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@property
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def unit_of_measurement(self):
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"""Return the unit of measurement."""
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return self._unit_of_measurement
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async def async_added_to_hass(self):
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"""Store entity_id and register state change callback."""
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entity_id_key = self._addr or self._type
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self._data[entity_id_key] = self.entity_id
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async_dispatcher_connect(
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self.hass, SIGNAL_SENSOR_UPDATE.format(self.entity_id), self.async_set_state
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)
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@callback
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def async_set_state(self, state):
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"""Update the sensor's state."""
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if self._type == DEVICE_CLASS_HUMIDITY:
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self._state = int(float(state))
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else:
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self._state = round(float(state), 1)
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self.async_schedule_update_ha_state()
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