core/homeassistant/components/zwave/sensor.py

109 lines
3.2 KiB
Python

"""Support for Z-Wave sensors."""
import logging
from homeassistant.core import callback
from homeassistant.components.sensor import DOMAIN
from homeassistant.const import TEMP_CELSIUS, TEMP_FAHRENHEIT
from homeassistant.helpers.dispatcher import async_dispatcher_connect
from . import (
const,
ZWaveDeviceEntity,
)
_LOGGER = logging.getLogger(__name__)
async def async_setup_platform(
hass, config, async_add_entities, discovery_info=None):
"""Old method of setting up Z-Wave sensors."""
pass
async def async_setup_entry(hass, config_entry, async_add_entities):
"""Set up Z-Wave Sensor from Config Entry."""
@callback
def async_add_sensor(sensor):
"""Add Z-Wave Sensor."""
async_add_entities([sensor])
async_dispatcher_connect(hass, 'zwave_new_sensor', async_add_sensor)
def get_device(node, values, **kwargs):
"""Create Z-Wave entity device."""
# Generic Device mappings
if node.has_command_class(const.COMMAND_CLASS_SENSOR_MULTILEVEL):
return ZWaveMultilevelSensor(values)
if node.has_command_class(const.COMMAND_CLASS_METER) and \
values.primary.type == const.TYPE_DECIMAL:
return ZWaveMultilevelSensor(values)
if node.has_command_class(const.COMMAND_CLASS_ALARM) or \
node.has_command_class(const.COMMAND_CLASS_SENSOR_ALARM):
return ZWaveAlarmSensor(values)
return None
class ZWaveSensor(ZWaveDeviceEntity):
"""Representation of a Z-Wave sensor."""
def __init__(self, values):
"""Initialize the sensor."""
ZWaveDeviceEntity.__init__(self, values, DOMAIN)
self.update_properties()
def update_properties(self):
"""Handle the data changes for node values."""
self._state = self.values.primary.data
self._units = self.values.primary.units
@property
def force_update(self):
"""Return force_update."""
return True
@property
def state(self):
"""Return the state of the sensor."""
return self._state
@property
def unit_of_measurement(self):
"""Return the unit of measurement the value is expressed in."""
return self._units
class ZWaveMultilevelSensor(ZWaveSensor):
"""Representation of a multi level sensor Z-Wave sensor."""
@property
def state(self):
"""Return the state of the sensor."""
if self._units in ('C', 'F'):
return round(self._state, 1)
if isinstance(self._state, float):
return round(self._state, 2)
return self._state
@property
def unit_of_measurement(self):
"""Return the unit the value is expressed in."""
if self._units == 'C':
return TEMP_CELSIUS
if self._units == 'F':
return TEMP_FAHRENHEIT
return self._units
class ZWaveAlarmSensor(ZWaveSensor):
"""Representation of a Z-Wave sensor that sends Alarm alerts.
Examples include certain Multisensors that have motion and vibration
capabilities. Z-Wave defines various alarm types such as Smoke, Flood,
Burglar, CarbonMonoxide, etc.
This wraps these alarms and allows you to use them to trigger things, etc.
COMMAND_CLASS_ALARM is what we get here.
"""
pass