reworked String Handling of Enums

Software/include/common.h

@@ -68,6 +68,7 @@
 // ->  6.90µl / Pulse
 #define DEFAULT_PUMP_DOSE 7
 
+// --- System status enum with sentinel ---
 typedef enum eSystem_Status
 {
   sysStat_Startup,
@@ -76,7 +77,8 @@ typedef enum eSystem_Status
   sysStat_Wash,
   sysStat_Purge,
   sysStat_Error,
-  sysStat_Shutdown
+  sysStat_Shutdown,
+  SYSSTAT_COUNT            // <- sentinel (must be last)
 } tSystem_Status;
 
 // Enum for different sources of speed input
@@ -89,13 +91,10 @@ typedef enum SpeedSource_e
   SOURCE_GPS,
   SOURCE_CAN,
   SOURCE_OBD2_KLINE,
-  SOURCE_OBD2_CAN
+  SOURCE_OBD2_CAN,
+  SPEEDSOURCE_COUNT            // <- sentinel (must be last)
 } SpeedSource_t;
 
-// String representation of SpeedSource enum
-extern const char *SpeedSourceString[];
-extern const size_t SpeedSourceString_Elements;
-
 // Enum for GPS baud rates
 typedef enum GPSBaudRate_e
 {
@@ -104,23 +103,29 @@ typedef enum GPSBaudRate_e
   BAUD_19200,
   BAUD_38400,
   BAUD_57600,
-  BAUD_115200
+  BAUD_115200,
+  GPSBAUDRATE_COUNT            // <- sentinel (must be last)
 } GPSBaudRate_t;
 
-// String representation of GPSBaudRate enum
-extern const char *GPSBaudRateString[];
-extern const size_t GPSBaudRateString_Elements;
-
 // Enum for CAN bus sources
 typedef enum CANSource_e
 {
   KTM_890_ADV_R_2021,
-  KTM_1290_SD_R_2023
+  KTM_1290_SD_R_2023,
+  CANSOURCE_COUNT            // <- sentinel (must be last)
 } CANSource_t;
 
-// String representation of CANSource enum
+// String tables (kept internal to the module)
-extern const char *CANSourceString[];
+extern const char * const SystemStatusString[SYSSTAT_COUNT];
-extern const size_t CANSourceString_Elements;
+extern const char * const SpeedSourceString[SPEEDSOURCE_COUNT];
+extern const char * const GPSBaudRateString[GPSBAUDRATE_COUNT];
+extern const char * const CANSourceString[CANSOURCE_COUNT];
+
+// Safe getters (centralized bounds check)
+const char* ToString(SpeedSource_t v);
+const char* ToString(GPSBaudRate_t v);
+const char* ToString(CANSource_t v);
+const char* ToString(tSystem_Status v);
 
 #define STARTUP_DELAY 2500
 #define SHUTDOWN_DELAY_MS 2500

Software/include/globals.h

@@ -22,7 +22,6 @@ typedef struct Globals_s
 {
   tSystem_Status systemStatus = sysStat_Startup;      /**< Current system status */
   tSystem_Status resumeStatus = sysStat_Startup;      /**< Status to resume after rain mode */
-  char systemStatustxt[16] = "";                      /**< Text representation of system status */
   uint16_t purgePulses = 0;                           /**< Number of purge pulses */
   EERequest_t requestEEAction = EE_IDLE;              /**< EEPROM-related request */
   char DeviceName[33];                                /**< Device name */

Software/src/common.cpp

@@ -1,7 +1,20 @@
 #include "common.h"
 
+static const char kUnknownStr[] = "Unknown";
+
+// ---- System status string table ----
+const char *const SystemStatusString[SYSSTAT_COUNT] = {
+    "Startup",
+    "Normal",
+    "Rain",
+    "Wash",
+    "Purge",
+    "Error",
+    "Shutdown",
+};
+
 // String representation of SpeedSource enum
-const char *SpeedSourceString[] = {
+const char *const SpeedSourceString[SPEEDSOURCE_COUNT] = {
 #ifdef FEATURE_ENABLE_TIMER
     "Timer",
 #endif
@@ -12,10 +25,8 @@ const char *SpeedSourceString[] = {
     "OBD2 (CAN)",
 };
 
-const size_t SpeedSourceString_Elements = sizeof(SpeedSourceString) / sizeof(SpeedSourceString[0]);
-
 // String representation of GPSBaudRate enum
-const char *GPSBaudRateString[] = {
+const char *const GPSBaudRateString[GPSBAUDRATE_COUNT] = {
     "4800",
     "9600",
     "19200",
@@ -24,12 +35,49 @@ const char *GPSBaudRateString[] = {
     "115200",
 };
 
-const size_t GPSBaudRateString_Elements = sizeof(GPSBaudRateString) / sizeof(GPSBaudRateString[0]);
-
 // String representation of CANSource enum
-const char *CANSourceString[] = {
+const char *const CANSourceString[CANSOURCE_COUNT] = {
     "KTM 890 Adventure R (2021)",
     "KTM 1290 Superduke R (2023)",
 };
 
-const size_t CANSourceString_Elements = sizeof(CANSourceString) / sizeof(CANSourceString[0]);
+// ---- Centralized, safe getters ----
+
+// ---- Local helper for range check ----
+static inline bool in_range(int v, int max_exclusive)
+{
+    return (v >= 0) && (v < max_exclusive);
+}
+
+// ---- Safe getter ----
+const char *ToString(tSystem_Status v)
+{
+    const int i = static_cast<int>(v);
+    return in_range(i, static_cast<int>(SYSSTAT_COUNT))
+               ? SystemStatusString[i]
+               : kUnknownStr;
+}
+
+const char *ToString(SpeedSource_t v)
+{
+    const int i = static_cast<int>(v);
+    return in_range(i, static_cast<int>(SPEEDSOURCE_COUNT))
+               ? SpeedSourceString[i]
+               : kUnknownStr;
+}
+
+const char *ToString(GPSBaudRate_t v)
+{
+    const int i = static_cast<int>(v);
+    return in_range(i, static_cast<int>(GPSBAUDRATE_COUNT))
+               ? GPSBaudRateString[i]
+               : kUnknownStr;
+}
+
+const char *ToString(CANSource_t v)
+{
+    const int i = static_cast<int>(v);
+    return in_range(i, static_cast<int>(CANSOURCE_COUNT))
+               ? CANSourceString[i]
+               : kUnknownStr;
+}

Software/src/config.cpp

@@ -615,21 +615,21 @@ uint32_t ConfigSanityCheck(bool autocorrect)
       LubeConfig.BleedingPulses = LubeConfig_defaults.BleedingPulses;
   }
 
-  if (!(LubeConfig.SpeedSource >= 0) || !(LubeConfig.SpeedSource < SpeedSourceString_Elements))
+  if (!(LubeConfig.SpeedSource >= 0) || !(LubeConfig.SpeedSource < SPEEDSOURCE_COUNT))
   {
     SET_BIT(setting_reset_bits, 11);
     if (autocorrect)
       LubeConfig.SpeedSource = LubeConfig_defaults.SpeedSource;
   }
 
-  if (!(LubeConfig.GPSBaudRate >= 0) || !(LubeConfig.GPSBaudRate < GPSBaudRateString_Elements))
+  if (!(LubeConfig.GPSBaudRate >= 0) || !(LubeConfig.GPSBaudRate < GPSBAUDRATE_COUNT))
   {
     SET_BIT(setting_reset_bits, 12);
     if (autocorrect)
       LubeConfig.GPSBaudRate = LubeConfig_defaults.GPSBaudRate;
   }
 
-  if (!(LubeConfig.CANSource >= 0) || !(LubeConfig.CANSource < CANSourceString_Elements))
+  if (!(LubeConfig.CANSource >= 0) || !(LubeConfig.CANSource < CANSOURCE_COUNT))
   {
     SET_BIT(setting_reset_bits, 13);
     if (autocorrect)

Software/src/debugger.cpp

@@ -459,7 +459,6 @@ void Debug_dumpGlobals()
 {
     Debug_pushMessage("systemStatus: %d\n", globals.systemStatus);
     Debug_pushMessage("resumeStatus: %d\n", globals.resumeStatus);
-    Debug_pushMessage("systemStatustxt: %s\n", globals.systemStatustxt);
     Debug_pushMessage("purgePulses: %d\n", globals.purgePulses);
     Debug_pushMessage("requestEEAction: %d\n", globals.requestEEAction);
     Debug_pushMessage("DeviceName: %s\n", globals.DeviceName);

Software/src/lubeapp.cpp

@@ -56,7 +56,6 @@ void RunLubeApp(uint32_t add_milimeters)
 
         if (lastSystemStatus != globals.systemStatus)
         {
-            strcpy_P(globals.systemStatustxt, PSTR("Startup"));
             LEDControl_SetBasic(LED_STARTUP_NORMAL, LED_PATTERN_BLINK);
             lastSystemStatus = globals.systemStatus;
             globals.resumeStatus = sysStat_Startup;
@@ -72,7 +71,6 @@ void RunLubeApp(uint32_t add_milimeters)
     case sysStat_Normal:
         if (lastSystemStatus != globals.systemStatus)
         {
-            strcpy_P(globals.systemStatustxt, PSTR("Normal"));
             LEDControl_SetBasic(LED_NORMAL_COLOR, LED_PATTERN_ON);
             lastSystemStatus = globals.systemStatus;
             globals.resumeStatus = sysStat_Normal;
@@ -89,7 +87,6 @@ void RunLubeApp(uint32_t add_milimeters)
     case sysStat_Rain:
         if (lastSystemStatus != globals.systemStatus)
         {
-            strcpy_P(globals.systemStatustxt, PSTR("Rain"));
             LEDControl_SetBasic(LED_RAIN_COLOR, LED_PATTERN_ON);
             lastSystemStatus = globals.systemStatus;
             globals.resumeStatus = sysStat_Rain;
@@ -107,7 +104,6 @@ void RunLubeApp(uint32_t add_milimeters)
         if (lastSystemStatus != globals.systemStatus)
         {
             washModeRemainDistance = LubeConfig.WashMode_Distance;
-            strcpy_P(globals.systemStatustxt, PSTR("Wash"));
             LEDControl_SetBasic(LED_WASH_COLOR, LED_PATTERN_BREATH);
             lastSystemStatus = globals.systemStatus;
         }
@@ -134,7 +130,6 @@ void RunLubeApp(uint32_t add_milimeters)
         if (lastSystemStatus != globals.systemStatus)
         {
             globals.purgePulses = LubeConfig.BleedingPulses;
-            strcpy_P(globals.systemStatustxt, PSTR("Purge"));
             LEDControl_SetBasic(LED_PURGE_COLOR, LED_PATTERN_BLINK);
             lastSystemStatus = globals.systemStatus;
         }
@@ -161,7 +156,6 @@ void RunLubeApp(uint32_t add_milimeters)
 
         if (lastSystemStatus != globals.systemStatus)
         {
-            strcpy_P(globals.systemStatustxt, PSTR("Error"));
             LEDControl_SetBasic(LED_ERROR_COLOR, LED_PATTERN_BLINK_FAST);
             lastSystemStatus = globals.systemStatus;
         }
@@ -173,7 +167,6 @@ void RunLubeApp(uint32_t add_milimeters)
 
         if (lastSystemStatus != globals.systemStatus)
         {
-            strcpy_P(globals.systemStatustxt, PSTR("Shutdown"));
             LEDControl_SetBasic(LED_SHUTDOWN_COLOR, LED_PATTERN_BREATH_REVERSE);
             lastSystemStatus = globals.systemStatus;
         }

Software/src/main.cpp

@@ -398,7 +398,7 @@ void Display_Process()
   DistRemain = DistRemain - (PersistenceData.TravelDistance_highRes_mm / 1000);
 
   // Display relevant information on the OLED screen based on system status
-  u8x8.printf(PSTR("Mode: %10s\n"), globals.systemStatustxt);
+  u8x8.printf(PSTR("Mode: %10s\n"), ToString(globals.systemStatus));
   if (globals.systemStatus == sysStat_Error)
   {
     // Display the last Diagnostic Trouble Code (DTC) in case of an error
@@ -412,7 +412,8 @@ void Display_Process()
     u8x8.printf(PSTR("WiFi: %10s\n"), (WiFi.getMode() == WIFI_AP ? "AP" : WiFi.getMode() == WIFI_OFF ? "OFF"
                                                                       : WiFi.getMode() == WIFI_STA   ? "CLIENT"
                                                                                                      : "UNKNOWN"));
-    u8x8.printf(PSTR("Source: %8s\n"), SpeedSourceString[LubeConfig.SpeedSource]);
+    u8x8.printf(PSTR("Source: %8s\n"), ToString(LubeConfig.SpeedSource));
+
     u8x8.printf("%s\n", WiFi.localIP().toString().c_str());
   }
 

Software/src/webui.cpp

@@ -337,89 +337,145 @@ void WebserverFirmwareUpdate_Callback(AsyncWebServerRequest *request, const Stri
     }
   }
 }
-
+void WebserverEERestore_Callback(AsyncWebServerRequest *request,
-/**
+                                 const String &filename,
- * @brief Callback function for handling EEPROM restore via the web server.
+                                 size_t index,
- *
+                                 uint8_t *data,
- * This function is invoked during the EEPROM restore process when a new EEPROM file
+                                 size_t len,
- * is received. It handles the restore process by reading the data from the received file,
+                                 bool final)
- * deserializing the JSON data, and updating the configuration and persistence data accordingly.
- * If the restore is successful, it triggers a system shutdown.
- *
- * @param request   Pointer to the AsyncWebServerRequest object.
- * @param filename  The name of the file being restored.
- * @param index     The index of the file being restored.
- * @param data      Pointer to the data buffer.
- * @param len       The length of the data buffer.
- * @param final     Boolean indicating if this is the final chunk of data.
- */
-void WebserverEERestore_Callback(AsyncWebServerRequest *request, const String &filename, size_t index, uint8_t *data, size_t len, bool final)
 {
+  constexpr size_t kBufCap = 1536;
+
   bool ee_done = false;
   static bool validext = false;
-  static char *buffer = NULL;
+  static char *buffer = nullptr;
   static uint32_t read_ptr = 0;
   DeserializationError error;
 
+  // kleines Helferlein zum sicheren Kopieren & Terminieren
+  auto safe_copy = [](char *dst, size_t dst_sz, const char *src)
+  {
+    if (!dst || dst_sz == 0)
+      return;
+    if (!src)
+    {
+      dst[0] = '\0';
+      return;
+    }
+    strncpy(dst, src, dst_sz - 1);
+    dst[dst_sz - 1] = '\0';
+  };
+
+  // Grenzen/Hilfen für Enum-Ranges (Sentinel bevorzugt, sonst *_Elements)
+  const int maxSpeedSrc = static_cast<int>(SPEEDSOURCE_COUNT);
+  const int maxGPSBaud = static_cast<int>(GPSBAUDRATE_COUNT);
+  const int maxCANSrc = static_cast<int>(CANSOURCE_COUNT);
+
   if (!index)
   {
     validext = (filename.indexOf(".ee.json") > -1);
     if (validext)
     {
-      buffer = (char *)malloc(1536);
+      buffer = (char *)malloc(kBufCap);
       read_ptr = 0;
-      if (buffer == NULL)
+      if (!buffer)
+      {
         Debug_pushMessage("malloc() failed for EEPROM-Restore\n");
       }
     }
+  }
 
-  if (buffer != NULL && len > 0)
+  // Chunked receive mit Cap/Trunkierungsschutz
+  if (buffer && len > 0)
   {
-    memcpy(buffer + read_ptr, data, len);
+    size_t remain = (read_ptr < kBufCap) ? (kBufCap - read_ptr) : 0;
-    read_ptr = read_ptr + len;
+    size_t to_copy = (len <= remain) ? len : remain;
+    if (to_copy > 0)
+    {
+      memcpy(buffer + read_ptr, data, to_copy);
+      read_ptr += to_copy;
+    }
+    else
+    {
+      Debug_pushMessage("EEPROM-Restore input exceeds buffer, truncating\n");
+    }
   }
 
   if (final)
   {
-    if (buffer != NULL)
+    if (buffer)
     {
-      // Ensure zero-termination just in case
+      // Null-terminieren
-      if (read_ptr >= 1536)
+      if (read_ptr == kBufCap)
-        read_ptr = 1535;
+        read_ptr = kBufCap - 1;
       buffer[read_ptr] = '\0';
 
-      Serial.print(buffer);
+      // Parse
-      JsonDocument json;
+      JsonDocument json; // entspricht deinem bisherigen Stil
       error = deserializeJson(json, buffer);
       if (error)
       {
         Debug_pushMessage("deserializeJson() failed: %s\n", error.f_str());
       }
-      else
+      else if (validext)
       {
+        // ---- Konfiguration sicher in RAM übernehmen ----
+        // clamp-Helfer passend zu deinen Sanity-Grenzen
+        auto clamp_u32 = [](uint32_t v, uint32_t lo, uint32_t hi)
+        { return (v < lo) ? lo : (v > hi ? hi : v); };
+        auto clamp_u16 = [](uint16_t v, uint16_t lo, uint16_t hi)
+        { return (v < lo) ? lo : (v > hi ? hi : v); };
+        auto clamp_u8 = [](uint8_t v, uint8_t lo, uint8_t hi)
+        { return (v < lo) ? lo : (v > hi ? hi : v); };
 
-        LubeConfig.DistancePerLube_Default = json["config"]["DistancePerLube_Default"].as<uint32_t>();
+        // config.*
-        LubeConfig.DistancePerLube_Rain = json["config"]["DistancePerLube_Rain"].as<uint32_t>();
+        LubeConfig.DistancePerLube_Default = clamp_u32(json["config"]["DistancePerLube_Default"].as<uint32_t>(), 0, 50000);
-        LubeConfig.tankCapacity_ml = json["config"]["tankCapacity_ml"].as<uint32_t>();
+        LubeConfig.DistancePerLube_Rain = clamp_u32(json["config"]["DistancePerLube_Rain"].as<uint32_t>(), 0, 50000);
-        LubeConfig.amountPerDose_microL = json["config"]["amountPerDose_microL"].as<uint32_t>();
+        LubeConfig.tankCapacity_ml = clamp_u32(json["config"]["tankCapacity_ml"].as<uint32_t>(), 0, 5000);
-        LubeConfig.TankRemindAtPercentage = json["config"]["TankRemindAtPercentage"].as<uint8_t>();
+        LubeConfig.amountPerDose_microL = clamp_u32(json["config"]["amountPerDose_microL"].as<uint32_t>(), 0, 100);
-        LubeConfig.PulsePerRevolution = json["config"]["PulsePerRevolution"].as<uint8_t>();
+        LubeConfig.TankRemindAtPercentage = clamp_u8(json["config"]["TankRemindAtPercentage"].as<uint8_t>(), 0, 100);
-        LubeConfig.TireWidth_mm = json["config"]["TireWidth_mm"].as<uint32_t>();
+        LubeConfig.PulsePerRevolution = clamp_u8(json["config"]["PulsePerRevolution"].as<uint8_t>(), 0, 255);
-        LubeConfig.TireWidthHeight_Ratio = json["config"]["TireWidthHeight_Ratio"].as<uint32_t>();
+        LubeConfig.TireWidth_mm = clamp_u32(json["config"]["TireWidth_mm"].as<uint32_t>(), 0, 500);
-        LubeConfig.RimDiameter_Inch = json["config"]["RimDiameter_Inch"].as<uint32_t>();
+        LubeConfig.TireWidthHeight_Ratio = clamp_u32(json["config"]["TireWidthHeight_Ratio"].as<uint32_t>(), 0, 150);
-        LubeConfig.DistancePerRevolution_mm = json["config"]["DistancePerRevolution_mm"].as<uint32_t>();
+        LubeConfig.RimDiameter_Inch = clamp_u32(json["config"]["RimDiameter_Inch"].as<uint32_t>(), 0, 30);
-        LubeConfig.BleedingPulses = json["config"]["BleedingPulses"].as<uint16_t>();
+        LubeConfig.DistancePerRevolution_mm = clamp_u32(json["config"]["DistancePerRevolution_mm"].as<uint32_t>(), 0, 10000);
-        LubeConfig.SpeedSource = (SpeedSource_t)json["config"]["SpeedSource"].as<int>();
+        LubeConfig.BleedingPulses = clamp_u16(json["config"]["BleedingPulses"].as<uint16_t>(), 0, 1000);
-        LubeConfig.GPSBaudRate = (GPSBaudRate_t)json["config"]["GPSBaudRate"].as<int>();
+        LubeConfig.WashMode_Distance = json["config"]["WashMode_Distance"].as<uint16_t>(); // ggf. Grenzen anpassen
-        LubeConfig.CANSource = (CANSource_t)json["config"]["CANSource"].as<int>();
+        LubeConfig.WashMode_Interval = json["config"]["WashMode_Interval"].as<uint16_t>(); // ggf. Grenzen anpassen
         LubeConfig.LED_Mode_Flash = json["config"]["LED_Mode_Flash"].as<bool>();
         LubeConfig.LED_Max_Brightness = json["config"]["LED_Max_Brightness"].as<uint8_t>();
         LubeConfig.LED_Min_Brightness = json["config"]["LED_Min_Brightness"].as<uint8_t>();
-        strncpy(LubeConfig.wifi_ap_ssid, json["config"]["wifi_ap_ssid"].as<const char *>(), sizeof(LubeConfig.wifi_ap_ssid));
-        strncpy(LubeConfig.wifi_ap_password, json["config"]["wifi_ap_password"].as<const char *>(), sizeof(LubeConfig.wifi_ap_password));
-        strncpy(LubeConfig.wifi_client_ssid, json["config"]["wifi_client_ssid"].as<const char *>(), sizeof(LubeConfig.wifi_client_ssid));
-        strncpy(LubeConfig.wifi_client_password, json["config"]["wifi_client_password"].as<const char *>(), sizeof(LubeConfig.wifi_client_password));
 
+        // Enums nur nach Range-Check übernehmen
+        {
+          int v = json["config"]["SpeedSource"].as<int>();
+          if (v >= 0 && v < maxSpeedSrc)
+            LubeConfig.SpeedSource = (SpeedSource_t)v;
+          else
+            Debug_pushMessage("Restore: invalid SpeedSource=%d\n", v);
+        }
+        {
+          int v = json["config"]["GPSBaudRate"].as<int>();
+          if (v >= 0 && v < maxGPSBaud)
+            LubeConfig.GPSBaudRate = (GPSBaudRate_t)v;
+          else
+            Debug_pushMessage("Restore: invalid GPSBaudRate=%d\n", v);
+        }
+        {
+          int v = json["config"]["CANSource"].as<int>();
+          if (v >= 0 && v < maxCANSrc)
+            LubeConfig.CANSource = (CANSource_t)v;
+          else
+            Debug_pushMessage("Restore: invalid CANSource=%d\n", v);
+        }
+
+        // Strings sicher kopieren (0-terminiert)
+        safe_copy(LubeConfig.wifi_ap_ssid, sizeof(LubeConfig.wifi_ap_ssid), json["config"]["wifi_ap_ssid"]);
+        safe_copy(LubeConfig.wifi_ap_password, sizeof(LubeConfig.wifi_ap_password), json["config"]["wifi_ap_password"]);
+        safe_copy(LubeConfig.wifi_client_ssid, sizeof(LubeConfig.wifi_client_ssid), json["config"]["wifi_client_ssid"]);
+        safe_copy(LubeConfig.wifi_client_password, sizeof(LubeConfig.wifi_client_password), json["config"]["wifi_client_password"]);
+
+        // persis.*
         PersistenceData.writeCycleCounter = json["persis"]["writeCycleCounter"].as<uint16_t>();
         PersistenceData.tankRemain_microL = json["persis"]["tankRemain_microL"].as<uint32_t>();
         PersistenceData.TravelDistance_highRes_mm = json["persis"]["TravelDistance_highRes_mm"].as<uint32_t>();
@@ -427,24 +483,33 @@ void WebserverEERestore_Callback(AsyncWebServerRequest *request, const String &f
         PersistenceData.odometer = json["persis"]["odometer"].as<uint32_t>();
         PersistenceData.checksum = json["persis"]["checksum"].as<uint32_t>();
 
+        // Optional: Sanity-Autokorrektur im RAM (keine EEPROM-Writes hier!)
+        {
+          uint32_t sanity = ConfigSanityCheck(true);
+          if (sanity > 0)
+          {
+            MaintainDTC(DTC_EEPROM_CFG_SANITY, true, sanity);
+            Debug_pushMessage("Restore: ConfigSanity corrected (mask=0x%08lX)\n", sanity);
+          }
+        }
+
         ee_done = true;
       }
-    }
 
-    if (buffer)
-    {
       free(buffer);
-      buffer = NULL;
+      buffer = nullptr;
     }
 
-    AsyncWebServerResponse *response = request->beginResponse(302, "text/plain", "Please wait while the device reboots");
+    // Browser zurückleiten & ggf. Shutdown
+    AsyncWebServerResponse *response =
+        request->beginResponse(302, "text/plain", "Please wait while the device reboots");
     response->addHeader("Refresh", "20");
     response->addHeader("Location", "/");
     request->send(response);
 
     if (ee_done)
     {
-      Debug_pushMessage("Update complete\n");
+      Debug_pushMessage("EEPROM restore complete\n");
       globals.systemStatus = sysStat_Shutdown;
     }
   }
@@ -648,24 +713,24 @@ void Websocket_HandleSettings(uint8_t *data)
   }
   else if (strcmp(identifier, "speedsource") == 0)
   {
-    int index = findIndexByString(value, SpeedSourceString, (int)SpeedSourceString_Elements);
+    int index = findIndexByString(value, SpeedSourceString, (int)SPEEDSOURCE_COUNT);
-    if (validIndex(index, (int)SpeedSourceString_Elements))
+    if (validIndex(index, (int)SPEEDSOURCE_COUNT))
       speedsourcePreselect = (SpeedSource_t)index;
     else
       Debug_pushMessage("Invalid speedsource '%s'\n", value);
   }
   else if (strcmp(identifier, "cansource") == 0)
   {
-    int index = findIndexByString(value, CANSourceString, (int)CANSourceString_Elements);
+    int index = findIndexByString(value, CANSourceString, (int)CANSOURCE_COUNT);
-    if (validIndex(index, (int)CANSourceString_Elements))
+    if (validIndex(index, (int)CANSOURCE_COUNT))
       LubeConfig.CANSource = (CANSource_t)index;
     else
       Debug_pushMessage("Invalid cansource '%s'\n", value);
   }
   else if (strcmp(identifier, "gpsbaud") == 0)
   {
-    int index = findIndexByString(value, GPSBaudRateString, (int)GPSBaudRateString_Elements);
+    int index = findIndexByString(value, GPSBaudRateString, (int)GPSBAUDRATE_COUNT);
-    if (validIndex(index, (int)GPSBaudRateString_Elements))
+    if (validIndex(index, (int)GPSBAUDRATE_COUNT))
       LubeConfig.GPSBaudRate = (GPSBaudRate_t)index;
     else
       Debug_pushMessage("Invalid gpsbaud '%s'\n", value);
@@ -801,7 +866,7 @@ void Websocket_RefreshClientData_Status(uint32_t client_id, bool send_mapping)
 
   String temp = "STATUS:";
 
-  temp.concat(String(nz(globals.systemStatustxt)) + ";");
+  temp.concat(String(ToString(globals.systemStatus)) + ";");
 
   // Guard against division by zero (capacity==0)
   uint32_t cap = LubeConfig.tankCapacity_ml;
@@ -856,26 +921,26 @@ void Websocket_RefreshClientData_Static(uint32_t client_id, bool send_mapping)
   temp += String(LubeConfig.RimDiameter_Inch) + ";";
 
   // speedsource + Optionen
-  temp += tableStr(SpeedSourceString, (int)LubeConfig.SpeedSource, (int)SpeedSourceString_Elements) + ";";
+  temp += String(ToString(LubeConfig.SpeedSource)) + ";";
   {
     String csv;
-    appendCsv(csv, SpeedSourceString, SpeedSourceString_Elements);
+    appendCsv(csv, SpeedSourceString, SPEEDSOURCE_COUNT);
     temp += csv + ";";
   }
 
   // gpsbaud + Optionen
-  temp += tableStr(GPSBaudRateString, (int)LubeConfig.GPSBaudRate, (int)GPSBaudRateString_Elements) + ";";
+  temp += String(ToString(LubeConfig.GPSBaudRate)) + ";";
   {
     String csv;
-    appendCsv(csv, GPSBaudRateString, GPSBaudRateString_Elements);
+    appendCsv(csv, GPSBaudRateString, GPSBAUDRATE_COUNT);
     temp += csv + ";";
   }
 
   // cansource + Optionen
-  temp += tableStr(CANSourceString, (int)LubeConfig.CANSource, (int)CANSourceString_Elements) + ";";
+  temp += String(ToString(LubeConfig.CANSource)) + ";";
   {
     String csv;
-    appendCsv(csv, CANSourceString, CANSourceString_Elements);
+    appendCsv(csv, CANSourceString, CANSOURCE_COUNT);
     temp += csv + ";";
   }