108 lines
3.2 KiB
Python
108 lines
3.2 KiB
Python
"""
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Support for KNX/IP sensors.
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For more details about this platform, please refer to the documentation at
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https://home-assistant.io/components/sensor.knx/
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"""
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import voluptuous as vol
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from homeassistant.components.knx import ATTR_DISCOVER_DEVICES, DATA_KNX
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from homeassistant.components.sensor import PLATFORM_SCHEMA
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from homeassistant.const import CONF_NAME
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from homeassistant.core import callback
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import homeassistant.helpers.config_validation as cv
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from homeassistant.helpers.entity import Entity
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CONF_ADDRESS = 'address'
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CONF_TYPE = 'type'
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DEFAULT_NAME = 'KNX Sensor'
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DEPENDENCIES = ['knx']
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PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
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vol.Required(CONF_ADDRESS): cv.string,
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vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
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vol.Optional(CONF_TYPE): cv.string,
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})
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async def async_setup_platform(hass, config, async_add_devices,
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discovery_info=None):
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"""Set up sensor(s) for KNX platform."""
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if discovery_info is not None:
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async_add_devices_discovery(hass, discovery_info, async_add_devices)
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else:
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async_add_devices_config(hass, config, async_add_devices)
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@callback
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def async_add_devices_discovery(hass, discovery_info, async_add_devices):
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"""Set up sensors for KNX platform configured via xknx.yaml."""
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entities = []
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for device_name in discovery_info[ATTR_DISCOVER_DEVICES]:
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device = hass.data[DATA_KNX].xknx.devices[device_name]
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entities.append(KNXSensor(hass, device))
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async_add_devices(entities)
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@callback
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def async_add_devices_config(hass, config, async_add_devices):
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"""Set up sensor for KNX platform configured within platform."""
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import xknx
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sensor = xknx.devices.Sensor(
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hass.data[DATA_KNX].xknx,
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name=config.get(CONF_NAME),
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group_address=config.get(CONF_ADDRESS),
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value_type=config.get(CONF_TYPE))
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hass.data[DATA_KNX].xknx.devices.add(sensor)
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async_add_devices([KNXSensor(hass, sensor)])
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class KNXSensor(Entity):
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"""Representation of a KNX sensor."""
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def __init__(self, hass, device):
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"""Initialize of a KNX sensor."""
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self.device = device
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self.hass = hass
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self.async_register_callbacks()
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@callback
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def async_register_callbacks(self):
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"""Register callbacks to update hass after device was changed."""
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async def after_update_callback(device):
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"""Call after device was updated."""
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await self.async_update_ha_state()
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self.device.register_device_updated_cb(after_update_callback)
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@property
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def name(self):
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"""Return the name of the KNX device."""
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return self.device.name
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@property
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def available(self):
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"""Return True if entity is available."""
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return self.hass.data[DATA_KNX].connected
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@property
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def should_poll(self):
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"""No polling needed within KNX."""
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return False
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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.device.resolve_state()
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@property
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def unit_of_measurement(self):
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"""Return the unit this state is expressed in."""
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return self.device.unit_of_measurement()
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@property
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def device_state_attributes(self):
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"""Return the state attributes."""
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return None
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