Support current and voltage of up to 4 MPP trackers

Author: farmio

homeassistant/components/fronius/icons.json

@@ -4,13 +4,13 @@
       "current_dc": {
         "default": "mdi:current-dc"
       },
-      "current_dc_2": {
+      "current_dc_mppt_no": {
         "default": "mdi:current-dc"
       },
       "voltage_dc": {
         "default": "mdi:current-dc"
       },
-      "voltage_dc_2": {
+      "voltage_dc_mppt_no": {
         "default": "mdi:current-dc"
       },
       "co2_factor": {

homeassistant/components/fronius/sensor.py

@@ -168,6 +168,26 @@ class FroniusSensorEntityDescription(SensorEntityDescription):
         native_unit_of_measurement=UnitOfElectricCurrent.AMPERE,
         device_class=SensorDeviceClass.CURRENT,
         state_class=SensorStateClass.MEASUREMENT,
+        translation_key="current_dc_mppt_no",
+        translation_placeholders={"mppt_no": "2"},
+    ),
+    FroniusSensorEntityDescription(
+        key="current_dc_3",
+        default_value=0,
+        native_unit_of_measurement=UnitOfElectricCurrent.AMPERE,
+        device_class=SensorDeviceClass.CURRENT,
+        state_class=SensorStateClass.MEASUREMENT,
+        translation_key="current_dc_mppt_no",
+        translation_placeholders={"mppt_no": "3"},
+    ),
+    FroniusSensorEntityDescription(
+        key="current_dc_4",
+        default_value=0,
+        native_unit_of_measurement=UnitOfElectricCurrent.AMPERE,
+        device_class=SensorDeviceClass.CURRENT,
+        state_class=SensorStateClass.MEASUREMENT,
+        translation_key="current_dc_mppt_no",
+        translation_placeholders={"mppt_no": "4"},
     ),
     FroniusSensorEntityDescription(
         key="power_ac",
@@ -197,6 +217,26 @@ class FroniusSensorEntityDescription(SensorEntityDescription):
         native_unit_of_measurement=UnitOfElectricPotential.VOLT,
         device_class=SensorDeviceClass.VOLTAGE,
         state_class=SensorStateClass.MEASUREMENT,
+        translation_key="voltage_dc_mppt_no",
+        translation_placeholders={"mppt_no": "2"},
+    ),
+    FroniusSensorEntityDescription(
+        key="voltage_dc_3",
+        default_value=0,
+        native_unit_of_measurement=UnitOfElectricPotential.VOLT,
+        device_class=SensorDeviceClass.VOLTAGE,
+        state_class=SensorStateClass.MEASUREMENT,
+        translation_key="voltage_dc_mppt_no",
+        translation_placeholders={"mppt_no": "3"},
+    ),
+    FroniusSensorEntityDescription(
+        key="voltage_dc_4",
+        default_value=0,
+        native_unit_of_measurement=UnitOfElectricPotential.VOLT,
+        device_class=SensorDeviceClass.VOLTAGE,
+        state_class=SensorStateClass.MEASUREMENT,
+        translation_key="voltage_dc_mppt_no",
+        translation_placeholders={"mppt_no": "4"},
     ),
     # device status entities
     FroniusSensorEntityDescription(
@@ -727,7 +767,7 @@ def __init__(
         self.response_key = description.response_key or description.key
         self.solar_net_id = solar_net_id
         self._attr_native_value = self._get_entity_value()
-        self._attr_translation_key = description.key
+        self._attr_translation_key = description.translation_key or description.key
 
     def _device_data(self) -> dict[str, Any]:
         """Extract information for SolarNet device from coordinator data."""

homeassistant/components/fronius/strings.json

@@ -52,8 +52,8 @@
       "current_dc": {
         "name": "DC current"
       },
-      "current_dc_2": {
-        "name": "DC current 2"
+      "current_dc_mppt_no": {
+        "name": "DC current {mppt_no}"
       },
       "power_ac": {
         "name": "AC power"
@@ -64,8 +64,8 @@
       "voltage_dc": {
         "name": "DC voltage"
       },
-      "voltage_dc_2": {
-        "name": "DC voltage 2"
+      "voltage_dc_mppt_no": {
+        "name": "DC voltage {mppt_no}"
       },
       "inverter_state": {
         "name": "Inverter state"

tests/components/fronius/snapshots/test_sensor.ambr

@@ -238,7 +238,7 @@
     'platform': 'fronius',
     'previous_unique_id': None,
     'supported_features': 0,
-    'translation_key': 'current_dc_2',
+    'translation_key': 'current_dc_mppt_no',
     'unique_id': '12345678-current_dc_2',
     'unit_of_measurement': <UnitOfElectricCurrent.AMPERE: 'A'>,
   })
@@ -342,7 +342,7 @@
     'platform': 'fronius',
     'previous_unique_id': None,
     'supported_features': 0,
-    'translation_key': 'voltage_dc_2',
+    'translation_key': 'voltage_dc_mppt_no',
     'unique_id': '12345678-voltage_dc_2',
     'unit_of_measurement': <UnitOfElectricPotential.VOLT: 'V'>,
   })
@@ -3798,7 +3798,7 @@
     'platform': 'fronius',
     'previous_unique_id': None,
     'supported_features': 0,
-    'translation_key': 'current_dc_2',
+    'translation_key': 'current_dc_mppt_no',
     'unique_id': '12345678-current_dc_2',
     'unit_of_measurement': <UnitOfElectricCurrent.AMPERE: 'A'>,
   })
@@ -3902,7 +3902,7 @@
     'platform': 'fronius',
     'previous_unique_id': None,
     'supported_features': 0,
-    'translation_key': 'voltage_dc_2',
+    'translation_key': 'voltage_dc_mppt_no',
     'unique_id': '12345678-voltage_dc_2',
     'unit_of_measurement': <UnitOfElectricPotential.VOLT: 'V'>,
   })