Add sensors to Mill local heaters (#61247)

Co-authored-by: Franck Nijhof <git@frenck.dev>

homeassistant/components/mill/sensor.py

@@ -12,9 +12,11 @@ from homeassistant.components.sensor import (
 from homeassistant.const import (
     CONCENTRATION_PARTS_PER_BILLION,
     CONCENTRATION_PARTS_PER_MILLION,
+    CONF_IP_ADDRESS,
     CONF_USERNAME,
     ENERGY_KILO_WATT_HOUR,
     PERCENTAGE,
+    POWER_WATT,
     TEMP_CELSIUS,
 )
 from homeassistant.core import callback
@@ -90,10 +92,43 @@ SENSOR_TYPES: tuple[SensorEntityDescription, ...] = (
     ),
 )
 
+LOCAL_SENSOR_TYPES: tuple[SensorEntityDescription, ...] = (
+    SensorEntityDescription(
+        key="control_signal",
+        native_unit_of_measurement=PERCENTAGE,
+        name="Control signal",
+        state_class=SensorStateClass.MEASUREMENT,
+    ),
+    SensorEntityDescription(
+        key="current_power",
+        device_class=SensorDeviceClass.POWER,
+        native_unit_of_measurement=POWER_WATT,
+        name="Current power",
+        state_class=SensorStateClass.MEASUREMENT,
+    ),
+    SensorEntityDescription(
+        key="raw_ambient_temperature",
+        device_class=SensorDeviceClass.TEMPERATURE,
+        native_unit_of_measurement=TEMP_CELSIUS,
+        name="Uncalibrated temperature",
+        state_class=SensorStateClass.MEASUREMENT,
+        entity_registry_enabled_default=False,
+    ),
+)
+
 
 async def async_setup_entry(hass, entry, async_add_entities):
     """Set up the Mill sensor."""
     if entry.data.get(CONNECTION_TYPE) == LOCAL:
+        mill_data_coordinator = hass.data[DOMAIN][LOCAL][entry.data[CONF_IP_ADDRESS]]
+
+        async_add_entities(
+            LocalMillSensor(
+                mill_data_coordinator,
+                entity_description,
+            )
+            for entity_description in LOCAL_SENSOR_TYPES
+        )
         return
 
     mill_data_coordinator = hass.data[DOMAIN][CLOUD][entry.data[CONF_USERNAME]]
@@ -154,3 +189,27 @@ class MillSensor(CoordinatorEntity, SensorEntity):
     def _update_attr(self, device):
         self._available = device.available
         self._attr_native_value = getattr(device, self.entity_description.key)
+
+
+class LocalMillSensor(CoordinatorEntity, SensorEntity):
+    """Representation of a Mill Sensor device."""
+
+    def __init__(self, coordinator, entity_description):
+        """Initialize the sensor."""
+        super().__init__(coordinator)
+
+        self.entity_description = entity_description
+        self._attr_name = (
+            f"{coordinator.mill_data_connection.name} {entity_description.name}"
+        )
+        self._update_attr()
+
+    @callback
+    def _handle_coordinator_update(self) -> None:
+        """Handle updated data from the coordinator."""
+        self._update_attr()
+        self.async_write_ha_state()
+
+    @callback
+    def _update_attr(self) -> None:
+        self._attr_native_value = self.coordinator.data[self.entity_description.key]

tests/components/mill/test_init.py

@@ -78,6 +78,8 @@ async def test_setup_with_local_config(hass):
             "ambient_temperature": 20,
             "set_temperature": 22,
             "current_power": 0,
+            "control_signal": 0,
+            "raw_ambient_temperature": 19,
         },
     ) as mock_fetch, patch(
         "mill_local.Mill.connect",