core/homeassistant/components/light/velbus.py

105 lines
3.0 KiB
Python

"""
Support for Velbus lights.
For more details about this platform, please refer to the documentation at
https://home-assistant.io/components/light.velbus/
"""
import asyncio
import logging
import voluptuous as vol
from homeassistant.const import CONF_NAME, CONF_DEVICES
from homeassistant.components.light import Light, PLATFORM_SCHEMA
from homeassistant.components.velbus import DOMAIN
import homeassistant.helpers.config_validation as cv
DEPENDENCIES = ['velbus']
_LOGGER = logging.getLogger(__name__)
PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
vol.Required(CONF_DEVICES): vol.All(cv.ensure_list, [
{
vol.Required('module'): cv.positive_int,
vol.Required('channel'): cv.positive_int,
vol.Required(CONF_NAME): cv.string
}
])
})
def setup_platform(hass, config, add_devices, discovery_info=None):
"""Set up Lights."""
velbus = hass.data[DOMAIN]
add_devices(VelbusLight(light, velbus) for light in config[CONF_DEVICES])
class VelbusLight(Light):
"""Representation of a Velbus Light."""
def __init__(self, light, velbus):
"""Initialize a Velbus light."""
self._velbus = velbus
self._name = light[CONF_NAME]
self._module = light['module']
self._channel = light['channel']
self._state = False
@asyncio.coroutine
def async_added_to_hass(self):
"""Add listener for Velbus messages on bus."""
def _init_velbus():
"""Initialize Velbus on startup."""
self._velbus.subscribe(self._on_message)
self.get_status()
yield from self.hass.async_add_job(_init_velbus)
def _on_message(self, message):
import velbus
if isinstance(message, velbus.RelayStatusMessage) and \
message.address == self._module and \
message.channel == self._channel:
self._state = message.is_on()
self.schedule_update_ha_state()
@property
def name(self):
"""Return the display name of this light."""
return self._name
@property
def should_poll(self):
"""Disable polling."""
return False
@property
def is_on(self):
"""Return true if the light is on."""
return self._state
def turn_on(self, **kwargs):
"""Instruct the light to turn on."""
import velbus
message = velbus.SwitchRelayOnMessage()
message.set_defaults(self._module)
message.relay_channels = [self._channel]
self._velbus.send(message)
def turn_off(self, **kwargs):
"""Instruct the light to turn off."""
import velbus
message = velbus.SwitchRelayOffMessage()
message.set_defaults(self._module)
message.relay_channels = [self._channel]
self._velbus.send(message)
def get_status(self):
"""Retrieve current status."""
import velbus
message = velbus.ModuleStatusRequestMessage()
message.set_defaults(self._module)
message.channels = [self._channel]
self._velbus.send(message)