seems to work

apps/homekit/accessories/thermostat.py

@@ -0,0 +1,72 @@
+"""
+Thermostat Accessory Implementation for HomeKit
+
+Implements thermostat control according to homekit_mapping.md:
+- CurrentTemperature (read-only)
+- TargetTemperature (read/write)
+- CurrentHeatingCoolingState (fixed: 1 = heating)
+- TargetHeatingCoolingState (fixed: 3 = auto)
+"""
+
+from pyhap.accessory import Accessory
+from pyhap.const import CATEGORY_THERMOSTAT
+
+
+class ThermostatAccessory(Accessory):
+    """Thermostat with temperature control."""
+    
+    category = CATEGORY_THERMOSTAT
+    
+    def __init__(self, driver, device, api_client, display_name=None, *args, **kwargs):
+        """
+        Initialize the thermostat accessory.
+        
+        Args:
+            driver: HAP driver instance
+            device: Device object from DeviceRegistry
+            api_client: ApiClient for sending commands
+            display_name: Optional display name (defaults to device.friendly_name)
+        """
+        name = display_name or device.friendly_name or device.name
+        super().__init__(driver, name, *args, **kwargs)
+        self.device = device
+        self.api_client = api_client
+        
+        # Add Thermostat service
+        self.thermostat_service = self.add_preload_service('Thermostat')
+        
+        # Get characteristics
+        self.current_temp_char = self.thermostat_service.get_characteristic('CurrentTemperature')
+        self.target_temp_char = self.thermostat_service.get_characteristic('TargetTemperature')
+        self.current_heating_cooling_char = self.thermostat_service.get_characteristic('CurrentHeatingCoolingState')
+        self.target_heating_cooling_char = self.thermostat_service.get_characteristic('TargetHeatingCoolingState')
+        
+        # Set callback for target temperature
+        self.target_temp_char.setter_callback = self.set_target_temperature
+        
+        # Set fixed heating/cooling states (mode is always "auto")
+        # CurrentHeatingCoolingState: 0=Off, 1=Heat, 2=Cool
+        self.current_heating_cooling_char.set_value(1)  # Always heating
+        
+        # TargetHeatingCoolingState: 0=Off, 1=Heat, 2=Cool, 3=Auto
+        self.target_heating_cooling_char.set_value(3)  # Always auto
+        
+        # Set temperature range (5-30°C as per UI)
+        self.target_temp_char.properties['minValue'] = 5
+        self.target_temp_char.properties['maxValue'] = 30
+        self.target_temp_char.properties['minStep'] = 0.5
+    
+    def set_target_temperature(self, value):
+        """Called when HomeKit wants to change target temperature."""
+        payload = {
+            "type": "thermostat",
+            "payload": {"target": float(value)}
+        }
+        self.api_client.post_device_set(self.device.device_id, payload["type"], payload["payload"])
+    
+    def update_state(self, state_payload):
+        """Update state from API event."""
+        if "current" in state_payload:
+            self.current_temp_char.set_value(float(state_payload["current"]))
+        if "target" in state_payload:
+            self.target_temp_char.set_value(float(state_payload["target"]))