Implemented method to get the amount of relevant digits

lib/Hoymiles/src/parser/StatisticsParser.cpp

@@ -120,6 +120,25 @@ const char* StatisticsParser::getChannelFieldName(uint8_t channel, uint8_t field
     return fields[b[pos].fieldId];
 }
 
+uint8_t StatisticsParser::getChannelFieldDigits(uint8_t channel, uint8_t fieldId)
+{
+    uint8_t pos = getAssignIdxByChannelField(channel, fieldId);
+    const byteAssign_t* b = _byteAssignment;
+
+    switch (b[pos].div) {
+    case 1:
+        return 0;
+    case 10:
+        return 1;
+    case 100:
+        return 2;
+    case 1000:
+        return 3;
+    default:
+        return 2;
+    }
+}
+
 uint8_t StatisticsParser::getChannelCount()
 {
     const byteAssign_t* b = _byteAssignment;

lib/Hoymiles/src/parser/StatisticsParser.h

@@ -83,6 +83,7 @@ public:
     bool hasChannelFieldValue(uint8_t channel, uint8_t fieldId);
     const char* getChannelFieldUnit(uint8_t channel, uint8_t fieldId);
     const char* getChannelFieldName(uint8_t channel, uint8_t fieldId);
+    uint8_t getChannelFieldDigits(uint8_t channel, uint8_t fieldId);
 
     uint8_t getChannelCount();
 

src/WebApi_ws_live.cpp

@@ -134,6 +134,7 @@ void WebApiWsLiveClass::addField(JsonVariant& root, uint8_t idx, std::shared_ptr
         }
         root[idx][String(channel)][chanName]["v"] = inv->Statistics()->getChannelFieldValue(channel, fieldId);
         root[idx][String(channel)][chanName]["u"] = inv->Statistics()->getChannelFieldUnit(channel, fieldId);
+        root[idx][String(channel)][chanName]["d"] = inv->Statistics()->getChannelFieldDigits(channel, fieldId);
     }
 }