hass-core/homeassistant/components/light/mochad.py
Matthew Treinish 640d58f0a8 Fix X10 commands for mochad light turn on (#11146)
* Fix X10 commands for mochad light turn on

This commit attempts to address issues that a lot of people are having
with the x10 light component. Originally this was written to use the
xdim (extended dim) X10 command. However, not every X10 dimmer device
supports the xdim command. Additionally, it turns out the number of
dim/brighness levels the X10 device supports is device specific and
there is no way to detect this (given the mostly 1 way nature of X10)

To address these issues, this commit removes the usage of xdim and
instead relies on using the 'on' command and the 'dim' command. This
should work on all x10 light devices. In an attempt to address the
different dim/brightness levels supported by different devices this
commit also adds a new optional config value, 'brightness_levels', to
specify if it's either 32, 64, or 256. By default 32 levels are used
as this is the normal case and what is documented by mochad.

Fixes #8943

* make code more readable

* fix style

* fix lint

* fix tests
2017-12-17 00:52:40 +01:00

137 lines
4.8 KiB
Python

"""
Contains functionality to use a X10 dimmer over Mochad.
For more details about this platform, please refer to the documentation at
https://home.assistant.io/components/light.mochad/
"""
import logging
import voluptuous as vol
from homeassistant.components.light import (
ATTR_BRIGHTNESS, SUPPORT_BRIGHTNESS, Light, PLATFORM_SCHEMA)
from homeassistant.components import mochad
from homeassistant.const import (
CONF_NAME, CONF_PLATFORM, CONF_DEVICES, CONF_ADDRESS)
from homeassistant.helpers import config_validation as cv
DEPENDENCIES = ['mochad']
_LOGGER = logging.getLogger(__name__)
CONF_BRIGHTNESS_LEVELS = 'brightness_levels'
PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
vol.Required(CONF_PLATFORM): mochad.DOMAIN,
CONF_DEVICES: [{
vol.Optional(CONF_NAME): cv.string,
vol.Required(CONF_ADDRESS): cv.x10_address,
vol.Optional(mochad.CONF_COMM_TYPE): cv.string,
vol.Optional(CONF_BRIGHTNESS_LEVELS, default=32):
vol.All(vol.Coerce(int), vol.In([32, 64, 256])),
}]
})
def setup_platform(hass, config, add_devices, discovery_info=None):
"""Set up X10 dimmers over a mochad controller."""
devs = config.get(CONF_DEVICES)
add_devices([MochadLight(
hass, mochad.CONTROLLER.ctrl, dev) for dev in devs])
return True
class MochadLight(Light):
"""Representation of a X10 dimmer over Mochad."""
def __init__(self, hass, ctrl, dev):
"""Initialize a Mochad Light Device."""
from pymochad import device
self._controller = ctrl
self._address = dev[CONF_ADDRESS]
self._name = dev.get(CONF_NAME,
'x10_light_dev_{}'.format(self._address))
self._comm_type = dev.get(mochad.CONF_COMM_TYPE, 'pl')
self.device = device.Device(ctrl, self._address,
comm_type=self._comm_type)
self._brightness = 0
self._state = self._get_device_status()
self._brightness_levels = dev.get(CONF_BRIGHTNESS_LEVELS) - 1
@property
def brightness(self):
"""Return the birghtness of this light between 0..255."""
return self._brightness
def _get_device_status(self):
"""Get the status of the light from mochad."""
with mochad.REQ_LOCK:
status = self.device.get_status().rstrip()
return status == 'on'
@property
def name(self):
"""Return the display name of this light."""
return self._name
@property
def is_on(self):
"""Return true if the light is on."""
return self._state
@property
def supported_features(self):
"""Return supported features."""
return SUPPORT_BRIGHTNESS
@property
def assumed_state(self):
"""X10 devices are normally 1-way so we have to assume the state."""
return True
def _calculate_brightness_value(self, value):
return int(value * (float(self._brightness_levels) / 255.0))
def _adjust_brightness(self, brightness):
if self._brightness > brightness:
bdelta = self._brightness - brightness
mochad_brightness = self._calculate_brightness_value(bdelta)
self.device.send_cmd("dim {}".format(mochad_brightness))
self._controller.read_data()
elif self._brightness < brightness:
bdelta = brightness - self._brightness
mochad_brightness = self._calculate_brightness_value(bdelta)
self.device.send_cmd("bright {}".format(mochad_brightness))
self._controller.read_data()
def turn_on(self, **kwargs):
"""Send the command to turn the light on."""
brightness = kwargs.get(ATTR_BRIGHTNESS, 255)
with mochad.REQ_LOCK:
if self._brightness_levels > 32:
out_brightness = self._calculate_brightness_value(brightness)
self.device.send_cmd('xdim {}'.format(out_brightness))
self._controller.read_data()
else:
self.device.send_cmd("on")
self._controller.read_data()
# There is no persistence for X10 modules so a fresh on command
# will be full brightness
if self._brightness == 0:
self._brightness = 255
self._adjust_brightness(brightness)
self._brightness = brightness
self._state = True
def turn_off(self, **kwargs):
"""Send the command to turn the light on."""
with mochad.REQ_LOCK:
self.device.send_cmd('off')
self._controller.read_data()
# There is no persistence for X10 modules so we need to prepare
# to track a fresh on command will full brightness
if self._brightness_levels == 31:
self._brightness = 0
self._state = False