[P176] Add plugin Communication - Victron VE.Direct

src/_P176_VE_Direct.ino

@@ -6,6 +6,8 @@
 // #######################################################################################################
 
 /** Changelog:
+ * 2024-11-08 tonhuisman: Add successcount, errorcount and ischanged values for GetConfig. IsChanged will reset the state on each call, so
+ *                        should be called only once in a session.
  * 2024-10-30 tonhuisman: Accept ON/On and OFF/Off as 1 and 0 numeric values, to be able to use them as Values in the device configuration
  * 2024-10-30 tonhuisman: Simplifying the code somewhat, making it more robust, partially by TD-er
  * 2024-10-29 tonhuisman: Optimize receiving and processing data, resulting in much lower load (based on suggestions by TD-er)

src/src/PluginStructs/P176_data_struct.cpp

@@ -151,6 +151,23 @@ bool P176_data_struct::plugin_get_config_value(struct EventStruct *event,
     const String key = parseString(string, 1, '.'); // Decimal point as separator, by convention
     VictronValue value;
 
+    # if P176_HANDLE_CHECKSUM
+
+    if (equals(key, F("successcount"))) {
+      string  = _successCounter;
+      success = true;
+    } else
+    if (equals(key, F("ischanged"))) {
+      string              = _successCounter != _lastSuccessCounter;
+      _lastSuccessCounter = _successCounter;
+      success             = true;
+    } else
+    if (equals(key, F("errorcount"))) {
+      string  = _checksumErrors;
+      success = true;
+    } else
+    # endif // if P176_HANDLE_CHECKSUM
+
     if (getReceivedValue(key, value)) {
       string  = value.getValue();
       success = true;

src/src/PluginStructs/P176_data_struct.h

@@ -186,9 +186,10 @@ struct P176_data_struct : public PluginTaskData_base {
   ESPeasySerial *_serial = nullptr;
 
   # if P176_HANDLE_CHECKSUM
-  uint32_t _checksumErrors = 0;
-  uint32_t _checksumDelta  = 0;
-  uint32_t _successCounter = 0;
+  uint32_t _checksumErrors     = 0;
+  uint32_t _checksumDelta      = 0;
+  uint32_t _successCounter     = 0;
+  uint32_t _lastSuccessCounter = 0;
   # endif // if P176_HANDLE_CHECKSUM
   int               _baud         = P176_DEFAULT_BAUDRATE;
   unsigned int      _serialBuffer = P176_DEFAULT_BUFFER;