Merge pull request #340 from sti0/feature/extract-air-dew-pnt-temp

Extract air temperature and dew point for LWZ devices
pail23 · Dec 22, 2024 · 942ff62 · 942ff62
2 parents 2521c8a + 89cb0b5
commit 942ff62
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Showing 3 changed files with 19 additions and 3 deletions.
diff --git a/custom_components/stiebel_eltron_isg/const.py b/custom_components/stiebel_eltron_isg/const.py
@@ -218,6 +218,8 @@
 VENTILATION_AIR_TARGET_FLOW_RATE = "ventilation_air_target_flow_rate"
 EXTRACT_AIR_ACTUAL_FAN_SPEED = "extract_air_actual"
 EXTRACT_AIR_TARGET_FLOW_RATE = "extract_air_target_flowrate"
+EXTRACT_AIR_DEW_POINT = "extract_air_dew_point"
+EXTRACT_AIR_TEMPERATURE = "extract_air_temperature"
 EXTRACT_AIR_HUMIDITY = "extract_air_humidity"
 
 RESET_HEATPUMP = "reset_heatpump"

diff --git a/custom_components/stiebel_eltron_isg/lwz_coordinator.py b/custom_components/stiebel_eltron_isg/lwz_coordinator.py
@@ -53,8 +53,10 @@
     ERROR_STATUS,
     EVAPORATOR_DEFROST,
     EXTRACT_AIR_ACTUAL_FAN_SPEED,
+    EXTRACT_AIR_DEW_POINT,
     EXTRACT_AIR_HUMIDITY,
     EXTRACT_AIR_TARGET_FLOW_RATE,
+    EXTRACT_AIR_TEMPERATURE,
     FAN_LEVEL_DAY,
     FAN_LEVEL_NIGHT,
     FILTER,
@@ -222,14 +224,18 @@ async def read_modbus_system_values(self) -> dict:
             result[TARGET_TEMPERATURE_WATER] = get_isg_scaled_value(
                 decoder.decode_16bit_int(),
             )
-            # 18-19-20-21-22
+            # 18-19-20-21-22-23-24
             result[VENTILATION_AIR_ACTUAL_FAN_SPEED] = decoder.decode_16bit_uint()
             result[VENTILATION_AIR_TARGET_FLOW_RATE] = decoder.decode_16bit_uint()
             result[EXTRACT_AIR_ACTUAL_FAN_SPEED] = decoder.decode_16bit_uint()
             result[EXTRACT_AIR_TARGET_FLOW_RATE] = decoder.decode_16bit_uint()
             result[EXTRACT_AIR_HUMIDITY] = decoder.decode_16bit_uint()
-            # skip 23-24
-            decoder.skip_bytes(4)
+            result[EXTRACT_AIR_TEMPERATURE] = get_isg_scaled_value(
+                decoder.decode_16bit_uint()
+            )
+            result[EXTRACT_AIR_DEW_POINT] = get_isg_scaled_value(
+                decoder.decode_16bit_uint()
+            )
             # 25-26
             result[DEWPOINT_TEMPERATURE_HK1] = get_isg_scaled_value(
                 decoder.decode_16bit_int()

diff --git a/custom_components/stiebel_eltron_isg/sensor.py b/custom_components/stiebel_eltron_isg/sensor.py
@@ -61,8 +61,10 @@
     ELECTRICAL_BOOSTER_HEATING,
     ELECTRICAL_BOOSTER_HEATING_WATER,
     EXTRACT_AIR_ACTUAL_FAN_SPEED,
+    EXTRACT_AIR_DEW_POINT,
     EXTRACT_AIR_HUMIDITY,
     EXTRACT_AIR_TARGET_FLOW_RATE,
+    EXTRACT_AIR_TEMPERATURE,
     FLOW_TEMPERATURE,
     FLOW_TEMPERATURE_NHZ,
     FLOW_TEMPERATURE_WP1,
@@ -483,7 +485,13 @@ def create_volume_stream_entity_description(name, key):
         native_unit_of_measurement=UnitOfVolumeFlowRate.CUBIC_METERS_PER_HOUR,
         state_class=SensorStateClass.MEASUREMENT,
     ),
+    create_temperature_entity_description(
+        "Extract air dew point", EXTRACT_AIR_DEW_POINT
+    ),
     create_humidity_entity_description("Extract air humidity", EXTRACT_AIR_HUMIDITY),
+    create_temperature_entity_description(
+        "Extract air temperature", EXTRACT_AIR_TEMPERATURE
+    ),
 ]