Add Danfoss Air HRV support (home-assistant#20138)

* Add support for Danfoss Air HRV systems.

* Correct lint errors after initial commit of Danfoss Air HRV support.

* A couple of lint fixes for danfoss_air.

* Refactor to comply with HA standards.

* Style fix.

* Use wildcard for danfoss_air in .coveragerc.

* Remove config example from header documentation.
Correct import name for platforms.

.coveragerc

@@ -80,6 +80,8 @@ omit =
     homeassistant/components/digital_ocean.py
     homeassistant/components/*/digital_ocean.py
 
+    homeassistant/components/danfoss_air/*
+
     homeassistant/components/dominos.py
 
     homeassistant/components/doorbird.py

homeassistant/components/danfoss_air/__init__.py

@@ -0,0 +1,83 @@
+"""
+Support for Danfoss Air HRV.
+
+For more details about this component, please refer to the documentation at
+https://home-assistant.io/components/danfoss_air/
+"""
+from datetime import timedelta
+import logging
+
+import voluptuous as vol
+
+from homeassistant.const import CONF_HOST
+from homeassistant.helpers import discovery
+import homeassistant.helpers.config_validation as cv
+from homeassistant.util import Throttle
+
+REQUIREMENTS = ['pydanfossair==0.0.6']
+
+_LOGGER = logging.getLogger(__name__)
+
+DANFOSS_AIR_PLATFORMS = ['sensor', 'binary_sensor']
+DOMAIN = 'danfoss_air'
+
+MIN_TIME_BETWEEN_UPDATES = timedelta(seconds=60)
+
+CONFIG_SCHEMA = vol.Schema({
+    DOMAIN: vol.Schema({
+        vol.Required(CONF_HOST): cv.string,
+    }),
+}, extra=vol.ALLOW_EXTRA)
+
+
+def setup(hass, config):
+    """Set up the Danfoss Air component."""
+    conf = config[DOMAIN]
+
+    hass.data[DOMAIN] = DanfossAir(conf[CONF_HOST])
+
+    for platform in DANFOSS_AIR_PLATFORMS:
+        discovery.load_platform(hass, platform, DOMAIN, {}, config)
+
+    return True
+
+
+class DanfossAir:
+    """Handle all communication with Danfoss Air CCM unit."""
+
+    def __init__(self, host):
+        """Initialize the Danfoss Air CCM connection."""
+        self._data = {}
+
+        from pydanfossair.danfossclient import DanfossClient
+
+        self._client = DanfossClient(host)
+
+    def get_value(self, item):
+        """Get value for sensor."""
+        if item in self._data:
+            return self._data[item]
+
+        return None
+
+    @Throttle(MIN_TIME_BETWEEN_UPDATES)
+    def update(self):
+        """Use the data from Danfoss Air API."""
+        _LOGGER.debug("Fetching data from Danfoss Air CCM module")
+        from pydanfossair.commands import ReadCommand
+        self._data[ReadCommand.exhaustTemperature] \
+            = self._client.command(ReadCommand.exhaustTemperature)
+        self._data[ReadCommand.outdoorTemperature] \
+            = self._client.command(ReadCommand.outdoorTemperature)
+        self._data[ReadCommand.supplyTemperature] \
+            = self._client.command(ReadCommand.supplyTemperature)
+        self._data[ReadCommand.extractTemperature] \
+            = self._client.command(ReadCommand.extractTemperature)
+        self._data[ReadCommand.humidity] \
+            = round(self._client.command(ReadCommand.humidity), 2)
+        self._data[ReadCommand.filterPercent] \
+            = round(self._client.command(ReadCommand.filterPercent), 2)
+        self._data[ReadCommand.bypass] \
+            = self._client.command(ReadCommand.bypass)
+
+        _LOGGER.debug("Done fetching data from Danfoss Air CCM module")

homeassistant/components/danfoss_air/binary_sensor.py

@@ -0,0 +1,56 @@
+"""
+Support for the for Danfoss Air HRV binary sensor platform.
+
+For more details about this component, please refer to the documentation at
+https://home-assistant.io/components/binary_sensor.danfoss_air/
+"""
+from homeassistant.components.binary_sensor import BinarySensorDevice
+from homeassistant.components.danfoss_air import DOMAIN \
+     as DANFOSS_AIR_DOMAIN
+
+
+def setup_platform(hass, config, add_devices, discovery_info=None):
+    """Set up the available Danfoss Air sensors etc."""
+    from pydanfossair.commands import ReadCommand
+    data = hass.data[DANFOSS_AIR_DOMAIN]
+
+    sensors = [["Danfoss Air Bypass Active", ReadCommand.bypass]]
+
+    dev = []
+
+    for sensor in sensors:
+        dev.append(DanfossAirBinarySensor(data, sensor[0], sensor[1]))
+
+    add_devices(dev, True)
+
+
+class DanfossAirBinarySensor(BinarySensorDevice):
+    """Representation of a Danfoss Air binary sensor."""
+
+    def __init__(self, data, name, sensor_type):
+        """Initialize the Danfoss Air binary sensor."""
+        self._data = data
+        self._name = name
+        self._state = None
+        self._type = sensor_type
+
+    @property
+    def name(self):
+        """Return the name of the sensor."""
+        return self._name
+
+    @property
+    def is_on(self):
+        """Return the state of the sensor."""
+        return self._state
+
+    @property
+    def device_class(self):
+        """Type of device class."""
+        return "opening"
+
+    def update(self):
+        """Fetch new state data for the sensor."""
+        self._data.update()
+
+        self._state = self._data.get_value(self._type)

homeassistant/components/danfoss_air/sensor.py

@@ -0,0 +1,76 @@
+"""
+Support for the for Danfoss Air HRV sensor platform.
+
+For more details about this component, please refer to the documentation at
+https://home-assistant.io/components/sensor.danfoss_air/
+"""
+from homeassistant.components.danfoss_air import DOMAIN \
+     as DANFOSS_AIR_DOMAIN
+from homeassistant.const import TEMP_CELSIUS
+from homeassistant.helpers.entity import Entity
+
+
+def setup_platform(hass, config, add_devices, discovery_info=None):
+    """Set up the available Danfoss Air sensors etc."""
+    from pydanfossair.commands import ReadCommand
+
+    data = hass.data[DANFOSS_AIR_DOMAIN]
+
+    sensors = [
+        ["Danfoss Air Exhaust Temperature", TEMP_CELSIUS,
+         ReadCommand.exhaustTemperature],
+        ["Danfoss Air Outdoor Temperature", TEMP_CELSIUS,
+         ReadCommand.outdoorTemperature],
+        ["Danfoss Air Supply Temperature", TEMP_CELSIUS,
+         ReadCommand.supplyTemperature],
+        ["Danfoss Air Extract Temperature", TEMP_CELSIUS,
+         ReadCommand.extractTemperature],
+        ["Danfoss Air Remaining Filter", '%',
+         ReadCommand.filterPercent],
+        ["Danfoss Air Humidity", '%',
+         ReadCommand.humidity]
+        ]
+
+    dev = []
+
+    for sensor in sensors:
+        dev.append(DanfossAir(data, sensor[0], sensor[1], sensor[2]))
+
+    add_devices(dev, True)
+
+
+class DanfossAir(Entity):
+    """Representation of a Sensor."""
+
+    def __init__(self, data, name, sensorUnit, sensorType):
+        """Initialize the sensor."""
+        self._data = data
+        self._name = name
+        self._state = None
+        self._type = sensorType
+        self._unit = sensorUnit
+
+    @property
+    def name(self):
+        """Return the name of the sensor."""
+        return self._name
+
+    @property
+    def state(self):
+        """Return the state of the sensor."""
+        return self._state
+
+    @property
+    def unit_of_measurement(self):
+        """Return the unit of measurement."""
+        return self._unit
+
+    def update(self):
+        """Update the new state of the sensor.
+
+        This is done through the DanfossAir object tthat does the actually
+        communication with the Air CCM.
+        """
+        self._data.update()
+
+        self._state = self._data.get_value(self._type)

requirements_all.txt

@@ -954,6 +954,9 @@ pycsspeechtts==1.0.2
 # homeassistant.components.daikin
 pydaikin==0.9
 
+# homeassistant.components.danfoss_air
+pydanfossair==0.0.6
+
 # homeassistant.components.deconz
 pydeconz==47