Extract and expose error code from StateResponse (#238)

Author: mill1000

msmart/device/AC/command.py

@@ -877,6 +877,7 @@ def __init__(self, payload: memoryview) -> None:
         self.target_humidity = None
         self.aux_heat = None
         self.independent_aux_heat = None
+        self.error_code = None
 
         self._parse(payload)
 
@@ -974,6 +975,8 @@ def _parse(self, payload: memoryview) -> None:
 
         self.display_on = (payload[14] != 0x70)
 
+        self.error_code = payload[16]
+
         if len(payload) < 20:
             return
 

msmart/device/AC/device.py

@@ -197,6 +197,8 @@ def __init__(self, ip: str, device_id: int,  port: int, **kwargs) -> None:
         self._aux_mode = AirConditioner.AuxHeatMode.OFF
         self._supported_aux_modes = [AirConditioner.AuxHeatMode.OFF]
 
+        self._error_code = None
+
     def _update_state(self, res: Response) -> None:
         """Update the local state from a device state response."""
 
@@ -251,6 +253,8 @@ def _update_state(self, res: Response) -> None:
             else:
                 self._aux_mode = AirConditioner.AuxHeatMode.OFF
 
+            self._error_code = res.error_code
+
         elif isinstance(res, PropertiesResponse):
             _LOGGER.debug(
                 "Properties response payload from device %s: %s", self.id, res)
@@ -1025,6 +1029,10 @@ def aux_mode(self) -> AuxHeatMode:
     def aux_mode(self, mode: AuxHeatMode) -> None:
         self._aux_mode = mode
 
+    @property
+    def error_code(self) -> Optional[int]:
+        return self._error_code
+
     def to_dict(self) -> dict:
         return {**super().to_dict(), **{
             "power": self.power_state,
@@ -1055,6 +1063,7 @@ def to_dict(self) -> dict:
             "real_time_power_usage": self.get_real_time_power_usage(),
             "rate_select": self.rate_select,
             "aux_mode": self.aux_mode,
+            "error_code": self.error_code,
         }}
 
     # Deprecated methods and properties

msmart/device/AC/test_command.py

@@ -86,6 +86,7 @@ class TestStateResponse(_TestResponseBase):
         "target_humidity",
         "aux_heat",
         "independent_aux_heat",
+        "error_code",
     ]
 
     def _test_response(self, msg) -> StateResponse: