Fix: properly format Victron MPPT firmware version

lib/VeDirectFrameHandler/VeDirectData.cpp

@@ -137,6 +137,44 @@ frozen::string const& veStruct::getPidAsString() const
 	return getAsString(values, productID_PID);
 }
 
+/*
+ * This function returns the firmware version as an integer, disregarding
+ * release candidate marks.
+ */
+uint32_t veStruct::getFwVersionAsInteger() const
+{
+	char const* strVersion = firmwareVer_FW;
+
+	// VE.Direct protocol manual states that the first char can be a non-digit,
+	// in which case that char represents a release candidate version
+	if (strVersion[0] < '0' || strVersion[0] > '9') { ++strVersion; }
+
+	return static_cast<uint32_t>(strtoul(strVersion, nullptr, 10));
+}
+
+/*
+ * This function returns the firmware version as readable text.
+ */
+String veStruct::getFwVersionFormatted() const
+{
+	char const* strVersion = firmwareVer_FW;
+
+	// VE.Direct protocol manual states that the first char can be a non-digit,
+	// in which case that char represents a release candidate version
+	if (strVersion[0] < '0' || strVersion[0] > '9') { ++strVersion; }
+
+	String res(strVersion[0]);
+	res += ".";
+	res += strVersion + 1;
+
+	if (strVersion > firmwareVer_FW) {
+		res += "-rc-";
+		res += firmwareVer_FW[0];
+	}
+
+	return res;
+}
+
 /*
  * This function returns the state of operations (CS) as readable text.
  */

lib/VeDirectFrameHandler/VeDirectData.h

@@ -2,6 +2,7 @@
 
 #include <frozen/string.h>
 #include <frozen/map.h>
+#include <Arduino.h>
 
 #define VE_MAX_VALUE_LEN 33 // VE.Direct Protocol: max value size is 33 including /0
 #define VE_MAX_HEX_LEN 100 // Maximum size of hex frame - max payload 34 byte (=68 char) + safe buffer
@@ -9,12 +10,14 @@
 typedef struct {
     uint16_t productID_PID = 0;             // product id
     char serialNr_SER[VE_MAX_VALUE_LEN];    // serial number
-    char firmwareNr_FW[VE_MAX_VALUE_LEN];   // firmware release number
+    char firmwareVer_FW[VE_MAX_VALUE_LEN];  // firmware release number
     uint32_t batteryVoltage_V_mV = 0;       // battery voltage in mV
     int32_t batteryCurrent_I_mA = 0;        // battery current in mA (can be negative)
     float mpptEfficiency_Percent = 0;       // efficiency in percent (calculated, moving average)
 
     frozen::string const& getPidAsString() const; // product ID as string
+    uint32_t getFwVersionAsInteger() const;
+    String getFwVersionFormatted() const;
 } veStruct;
 
 struct veMpptStruct : veStruct {

lib/VeDirectFrameHandler/VeDirectFrameHandler.cpp

@@ -247,7 +247,7 @@ void VeDirectFrameHandler<T>::processTextData(std::string const& name, std::stri
 	}
 
 	if (name == "FW") {
-		strcpy(_tmpFrame.firmwareNr_FW, value.c_str());
+		strcpy(_tmpFrame.firmwareVer_FW, value.c_str());
 		return;
 	}
 

lib/VeDirectFrameHandler/VeDirectMpptController.cpp

@@ -110,7 +110,7 @@ void VeDirectMpptController::frameValidEvent() {
 	// charger periodically sends human readable (TEXT) data to the serial port. For firmware
 	// versions v1.53 and above, the charger always periodically sends TEXT data to the serial port.
 	// --> We just use hex commandes for firmware >= 1.53 to keep text messages alive
-	if (atoi(_tmpFrame.firmwareNr_FW) < 153) { return; }
+	if (_tmpFrame.getFwVersionAsInteger() < 153) { return; }
 
 	using Command = VeDirectHexCommand;
 	using Register = VeDirectHexRegister;

src/MqttHandleVedirect.cpp

@@ -110,7 +110,7 @@ void MqttHandleVedirectClass::publish_mppt_data(const VeDirectMpptController::da
 
     PUBLISH(productID_PID,           "PID",  currentData.getPidAsString().data());
     PUBLISH(serialNr_SER,            "SER",  currentData.serialNr_SER);
-    PUBLISH(firmwareNr_FW,            "FW",  currentData.firmwareNr_FW);
+    PUBLISH(firmwareVer_FW,           "FW",  currentData.firmwareVer_FW);
     PUBLISH(loadOutputState_LOAD,   "LOAD",  (currentData.loadOutputState_LOAD ? "ON" : "OFF"));
     PUBLISH(currentState_CS,          "CS",  currentData.getCsAsString().data());
     PUBLISH(errorCode_ERR,           "ERR",  currentData.getErrAsString().data());

src/WebApi_ws_vedirect_live.cpp

@@ -139,7 +139,7 @@ void WebApiWsVedirectLiveClass::generateCommonJsonResponse(JsonVariant& root, bo
 
 void WebApiWsVedirectLiveClass::populateJson(const JsonObject &root, const VeDirectMpptController::data_t &mpptData) {
     root["product_id"] = mpptData.getPidAsString();
-    root["firmware_version"] = String(mpptData.firmwareNr_FW);
+    root["firmware_version"] = mpptData.getFwVersionFormatted();
 
     const JsonObject values = root["values"].to<JsonObject>();
 

webapp/src/components/VedirectView.vue

@@ -21,13 +21,13 @@
                                     {{ item.product_id }}
                                 </div>
                                 <div style="padding-right: 2em;">
-                                    {{ $t('vedirecthome.SerialNumber') }} {{ serial }}
+                                    {{ $t('vedirecthome.SerialNumber') }}: {{ serial }}
                                 </div>
                                 <div style="padding-right: 2em;">
-                                    {{ $t('vedirecthome.FirmwareNumber') }}  {{ item.firmware_version }}
+                                    {{ $t('vedirecthome.FirmwareVersion') }}:  {{ item.firmware_version }}
                                 </div>
                                 <div style="padding-right: 2em;">
-                                    {{ $t('vedirecthome.DataAge') }} {{ $t('vedirecthome.Seconds', {'val': Math.floor(item.data_age_ms / 1000)}) }}
+                                    {{ $t('vedirecthome.DataAge') }}: {{ $t('vedirecthome.Seconds', {'val': Math.floor(item.data_age_ms / 1000)}) }}
                                 </div>
                             </div>
                         </div>

webapp/src/locales/de.json

@@ -152,9 +152,9 @@
         "LoadingInverter": "Warte auf Daten... (kann bis zu 10 Sekunden dauern)"
     },
     "vedirecthome": {
-        "SerialNumber": "Seriennummer: ",
+        "SerialNumber": "Seriennummer",
-        "FirmwareNumber": "Firmware Version: ",
+        "FirmwareVersion": "Firmware-Version",
-        "DataAge": "letzte Aktualisierung: ",
+        "DataAge": "letzte Aktualisierung",
         "Seconds": "vor {val} Sekunden",
         "Property": "Eigenschaft",
         "Value": "Wert",

webapp/src/locales/en.json

@@ -152,9 +152,9 @@
         "LoadingInverter": "Waiting for data... (can take up to 10 seconds)"
     },
     "vedirecthome": {
-        "SerialNumber": "Serial Number: ",
+        "SerialNumber": "Serial Number",
-        "FirmwareNumber": "Firmware Number: ",
+        "FirmwareVersion": "Firmware Version",
-        "DataAge": "Data Age: ",
+        "DataAge": "Data Age",
         "Seconds": "{val} seconds",
         "Property": "Property",
         "Value": "Value",

webapp/src/locales/fr.json

@@ -152,10 +152,10 @@
         "LoadingInverter": "Waiting for data... (can take up to 10 seconds)"
     },
     "vedirecthome": {
-        "SerialNumber": "Serial Number: ",
+        "SerialNumber": "Numéro de série",
-        "FirmwareNumber": "Firmware Number: ",
+        "FirmwareVersion": "Version du Firmware",
-        "DataAge": "Data Age: ",
+        "DataAge": "Âge des données",
-        "Seconds": "{val} seconds",
+        "Seconds": "{val} secondes",
         "Property": "Property",
         "Value": "Value",
         "Unit": "Unit",