Add total PV Power sensor (sum of PV1-PV4)

Author: rusty-bit

custom_components/deye_modbus/__init__.py

@@ -28,7 +28,7 @@
 _REGISTER_FIELDS = {
     "name", "unique_id", "register_type", "address", "count", "scale", "offset",
     "unit_of_measurement", "device_class", "state_class", "signed", "word_order",
-    "options", "mask", "icon", "enabled_default", "precision",
+    "options", "mask", "icon", "enabled_default", "precision", "compute", "sources",
 }
 
 
@@ -41,6 +41,9 @@ def _auto_inject_readbacks(sensors: list[dict], controls: list[dict]) -> tuple[l
     """Give every writable control a hidden holding sensor to read its state back."""
     for s in sensors:
         s["unique_id"] = _ensure_uid(s.get("unique_id"), "s", int(s.get("address", 0)))
+        if s.get("sources"):
+            s.setdefault("compute", "sum")
+            s["register_type"] = "computed"
     sensor_uids = {s["unique_id"] for s in sensors}
     for c in controls:
         addr = c.get("address", c.get("base_address", 0))

custom_components/deye_modbus/maps/sun_3ph_hybrid.yaml

@@ -158,6 +158,17 @@ sensors:
     state_class: measurement
     enabled_default: false
 
+  # Total PV power: the 3-phase protocol has no single register for this, so it
+  # is the sum of the four MPPT power registers (computed, not read).
+  - name: PV Power
+    unique_id: pv_power
+    compute: sum
+    sources: [pv1_power, pv2_power, pv3_power, pv4_power]
+    unit_of_measurement: W
+    device_class: power
+    state_class: measurement
+    icon: mdi:solar-power
+
   # ---------------------------------------------------------------- battery
   - name: Battery SOC
     unique_id: battery_soc