Feature: use VE.Direct "network total DC power"

1. makes the DPL use the power generated by all connected charge
   controllers for calculations based on solar passthrough.
2. makes the network total DC power appear as "MPPT Total Power" in the
   live view at the top.
3. shows the network total DC power in the VE.Direct live data card.

src/VictronMppt.cpp

@@ -140,6 +140,17 @@ int32_t VictronMpptClass::getPowerOutputWatts() const
 
     for (const auto& upController : _controllers) {
         if (!upController->isDataValid()) { continue; }
+
+        // if any charge controller is part of a VE.Smart network, and if the
+        // charge controller is connected in a way that allows to send
+        // requests, we should have the "network total DC input power"
+        // available. if so, to estimate the output power, we multiply by
+        // the calculated efficiency of the connected charge controller.
+        auto networkPower = upController->getData().NetworkTotalDcInputPowerMilliWatts;
+        if (networkPower.first > 0) {
+            return static_cast<int32_t>(networkPower.second / 1000.0 * upController->getData().E / 100);
+        }
+
         sum += upController->getData().P;
     }
 
@@ -152,6 +163,15 @@ int32_t VictronMpptClass::getPanelPowerWatts() const
 
     for (const auto& upController : _controllers) {
         if (!upController->isDataValid()) { continue; }
+
+        // if any charge controller is part of a VE.Smart network, and if the
+        // charge controller is connected in a way that allows to send
+        // requests, we should have the "network total DC input power" available.
+        auto networkPower = upController->getData().NetworkTotalDcInputPowerMilliWatts;
+        if (networkPower.first > 0) {
+            return static_cast<int32_t>(networkPower.second / 1000.0);
+        }
+
         sum += upController->getData().PPV;
     }
 

src/WebApi_ws_vedirect_live.cpp

@@ -180,6 +180,11 @@ void WebApiWsVedirectLiveClass::populateJson(const JsonObject &root, const VeDir
     output["E"]["d"] = 1;
 
     const JsonObject &input = values.createNestedObject("input");
+    if (mpptData.NetworkTotalDcInputPowerMilliWatts.first > 0) {
+        input["NetworkPower"]["v"] = mpptData.NetworkTotalDcInputPowerMilliWatts.second / 1000.0;
+        input["NetworkPower"]["u"] = "W";
+        input["NetworkPower"]["d"] = "0";
+    }
     input["PPV"]["v"] = mpptData.PPV;
     input["PPV"]["u"] = "W";
     input["PPV"]["d"] = 0;

webapp/src/locales/de.json

@@ -175,6 +175,7 @@
         },
         "section_input": "Eingang (Solarpanele)",
         "input": {
+            "NetworkPower": "VE.Smart Netzwerk Gesamtleistung",
             "PPV": "Leistung",
             "VPV": "Spannung",
             "IPV": "Strom (berechnet)",

webapp/src/locales/en.json

@@ -175,6 +175,7 @@
         },
         "section_input": "Input (Solar Panels)",
         "input": {
+            "NetworkPower": "VE.Smart network total power",
             "PPV": "Power",
             "VPV": "Voltage",
             "IPV": "Current (calculated)",

webapp/src/locales/fr.json

@@ -175,6 +175,7 @@
         },
         "section_input": "Input (Solar Panels)",
         "input": {
+            "NetworkPower": "VE.Smart network total power",
             "PPV": "Power",
             "VPV": "Voltage",
             "IPV": "Current (calculated)",