Add LCN climate platform (#22542)

* Add LCN climate component

* Updates of ha_state are done async

* Changes due to manifest.json

homeassistant/components/lcn/climate.py

@@ -0,0 +1,138 @@
+"""Support for LCN climate control."""
+import pypck
+
+from homeassistant.components.climate import ClimateDevice, const
+from homeassistant.const import (
+    ATTR_TEMPERATURE, CONF_ADDRESS, CONF_UNIT_OF_MEASUREMENT)
+
+from . import LcnDevice, get_connection
+from .const import (
+    CONF_CONNECTIONS, CONF_LOCKABLE, CONF_MAX_TEMP, CONF_MIN_TEMP,
+    CONF_SETPOINT, CONF_SOURCE, DATA_LCN)
+
+
+async def async_setup_platform(hass, hass_config, async_add_entities,
+                               discovery_info=None):
+    """Set up the LCN climate platform."""
+    if discovery_info is None:
+        return
+
+    devices = []
+    for config in discovery_info:
+        address, connection_id = config[CONF_ADDRESS]
+        addr = pypck.lcn_addr.LcnAddr(*address)
+        connections = hass.data[DATA_LCN][CONF_CONNECTIONS]
+        connection = get_connection(connections, connection_id)
+        address_connection = connection.get_address_conn(addr)
+
+        devices.append(LcnClimate(config, address_connection))
+
+    async_add_entities(devices)
+
+
+class LcnClimate(LcnDevice, ClimateDevice):
+    """Representation of a LCN climate device."""
+
+    def __init__(self, config, address_connection):
+        """Initialize of a LCN climate device."""
+        super().__init__(config, address_connection)
+
+        self.variable = self.pypck.lcn_defs.Var[config[CONF_SOURCE]]
+        self.setpoint = self.pypck.lcn_defs.Var[config[CONF_SETPOINT]]
+        self.unit = self.pypck.lcn_defs.VarUnit.parse(
+            config[CONF_UNIT_OF_MEASUREMENT])
+
+        self.regulator_id = \
+            self.pypck.lcn_defs.Var.to_set_point_id(self.setpoint)
+        self.is_lockable = config[CONF_LOCKABLE]
+        self._max_temp = config[CONF_MAX_TEMP]
+        self._min_temp = config[CONF_MIN_TEMP]
+
+        self._current_temperature = None
+        self._target_temperature = None
+        self._is_on = True
+
+        self.support = const.SUPPORT_TARGET_TEMPERATURE
+        if self.is_lockable:
+            self.support |= const.SUPPORT_ON_OFF
+
+    async def async_added_to_hass(self):
+        """Run when entity about to be added to hass."""
+        await super().async_added_to_hass()
+        await self.address_connection.activate_status_request_handler(
+            self.variable)
+        await self.address_connection.activate_status_request_handler(
+            self.setpoint)
+
+    @property
+    def supported_features(self):
+        """Return the list of supported features."""
+        return self.support
+
+    @property
+    def temperature_unit(self):
+        """Return the unit of measurement."""
+        return self.unit.value
+
+    @property
+    def current_temperature(self):
+        """Return the current temperature."""
+        return self._current_temperature
+
+    @property
+    def target_temperature(self):
+        """Return the temperature we try to reach."""
+        return self._target_temperature
+
+    @property
+    def is_on(self):
+        """Return true if the device is on."""
+        return self._is_on
+
+    @property
+    def max_temp(self):
+        """Return the maximum temperature."""
+        return self._max_temp
+
+    @property
+    def min_temp(self):
+        """Return the minimum temperature."""
+        return self._min_temp
+
+    async def async_turn_on(self):
+        """Turn on."""
+        self._is_on = True
+        self.address_connection.lock_regulator(self.regulator_id, False)
+        await self.async_update_ha_state()
+
+    async def async_turn_off(self):
+        """Turn off."""
+        self._is_on = False
+        self.address_connection.lock_regulator(self.regulator_id, True)
+        self._target_temperature = None
+        await self.async_update_ha_state()
+
+    async def async_set_temperature(self, **kwargs):
+        """Set new target temperature."""
+        temperature = kwargs.get(ATTR_TEMPERATURE)
+        if temperature is None:
+            return
+
+        self._target_temperature = temperature
+        self.address_connection.var_abs(
+            self.setpoint, self._target_temperature, self.unit)
+        await self.async_update_ha_state()
+
+    def input_received(self, input_obj):
+        """Set temperature value when LCN input object is received."""
+        if not isinstance(input_obj, self.pypck.inputs.ModStatusVar):
+            return
+
+        if input_obj.get_var() == self.variable:
+            self._current_temperature = (
+                input_obj.get_value().to_var_unit(self.unit))
+        elif self._is_on and input_obj.get_var() == self.setpoint:
+            self._target_temperature = (
+                input_obj.get_value().to_var_unit(self.unit))
+
+        self.async_schedule_update_ha_state()