core/homeassistant/components/sensor/demo.py

55 lines
1.4 KiB
Python

"""
homeassistant.components.sensor.demo
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Demo platform that has a couple of fake sensors.
"""
from homeassistant.helpers.entity import Entity
from homeassistant.const import TEMP_CELCIUS, ATTR_BATTERY_LEVEL
# pylint: disable=unused-argument
def setup_platform(hass, config, add_devices, discovery_info=None):
""" Sets up the Demo sensors. """
add_devices([
DemoSensor('Outside Temperature', 15.6, TEMP_CELCIUS, 12),
DemoSensor('Outside Humidity', 54, '%', None),
])
class DemoSensor(Entity):
""" A Demo sensor. """
def __init__(self, name, state, unit_of_measurement, battery):
self._name = name
self._state = state
self._unit_of_measurement = unit_of_measurement
self._battery = battery
@property
def should_poll(self):
""" No polling needed for a demo sensor. """
return False
@property
def name(self):
""" Returns the name of the device. """
return self._name
@property
def state(self):
""" Returns the state of the device. """
return self._state
@property
def unit_of_measurement(self):
""" Unit this state is expressed in. """
return self._unit_of_measurement
@property
def state_attributes(self):
""" Returns the state attributes. """
if self._battery:
return {
ATTR_BATTERY_LEVEL: self._battery,
}