Add print log functionality and device name handling

- Introduced functions to capture and manage incoming print logs.
- Added a download link for the incoming print log in the web interface.
- Updated device name prefix for BLE and added device name building logic.
- Enhanced SerialCommand class with line handler support.
- Implemented WiFi reconnect logic and status tracking.

include/EggDuino.h

@@ -146,6 +146,7 @@ void handleWebInterface();
 void startBleInterface();
 void handleBleInterface();
 bool bleProtocolWrite(const char *message);
+void buildDeviceName(char *nameBuffer, size_t bufferSize);
 void startWifiProtocolInterface();
 void handleWifiProtocolInterface();
 bool wifiProtocolWrite(const char *message);
@@ -157,6 +158,11 @@ inline bool bleProtocolWrite(const char *message)
 	(void)message;
 	return false;
 }
+inline void buildDeviceName(char *nameBuffer, size_t bufferSize)
+{
+	(void)nameBuffer;
+	(void)bufferSize;
+}
 inline void startWifiProtocolInterface() {}
 inline void handleWifiProtocolInterface() {}
 inline bool wifiProtocolWrite(const char *message)
@@ -168,5 +174,8 @@ inline bool wifiProtocolWrite(const char *message)
 void Log(const String &message);
 void Log(const char *message);
 String buildLogsJson(uint32_t sinceSeq);
+void captureIncomingPrintLine(const char *line, ProtocolTransport transport);
+String buildIncomingPrintLogText();
+void clearIncomingPrintLog();
 
 #endif

lib/SerialCommand/src/SerialCommand.cpp

@@ -30,6 +30,7 @@ SerialCommand::SerialCommand()
   : commandList(NULL),
     commandCount(0),
     defaultHandler(NULL),
+    lineHandler(NULL),
     term('\r'),           // default terminator for commands, newline character
     last(NULL)
 {
@@ -64,6 +65,10 @@ void SerialCommand::setDefaultHandler(void (*function)(const char *)) {
   defaultHandler = function;
 }
 
+void SerialCommand::setLineHandler(LineHandler function) {
+  lineHandler = function;
+}
+
 
 /**
  * This checks the Serial stream for characters, and assembles them into a buffer.
@@ -92,6 +97,10 @@ void SerialCommand::readChar(char inChar) {
       Serial.println(buffer);
     #endif
 
+    if ((lineHandler != NULL) && (bufPos > 0)) {
+      (*lineHandler)(buffer);
+    }
+
     char *command = strtok_r(buffer, delim, &last); // Search for command at start of buffer
     if (command != NULL) {
       boolean matched = false;

lib/SerialCommand/src/SerialCommand.h

@@ -44,9 +44,12 @@
 
 class SerialCommand {
   public:
+    typedef void (*LineHandler)(const char *);
+
     SerialCommand();      // Constructor
     void addCommand(const char *command, void(*function)());  // Add a command to the processing dictionary.
     void setDefaultHandler(void (*function)(const char *));   // A handler to call when no valid command received.
+    void setLineHandler(LineHandler function);                 // Optional handler called with each completed input line.
 
     void readSerial();    // Main entry point.
     void readSerial(Stream &stream); // Reads commands from any Stream-compatible transport.
@@ -65,6 +68,7 @@ class SerialCommand {
 
     // Pointer to the default handler function
     void (*defaultHandler)(const char *);
+    LineHandler lineHandler;
 
     char delim[2]; // null-terminated list of character to be used as delimeters for tokenizing (default " ")
     char term;     // Character that signals end of command (default '\n')

platformio.ini

@@ -29,7 +29,6 @@ board = esp32dev
 framework = arduino
 monitor_speed = 115200
 monitor_port = /dev/cu.usb*
-upload_speed = 115200
 upload_port = /dev/cu.usb*
 lib_deps = 
 	arminjo/ServoEasing

src/BLE_Interface.cpp

@@ -6,7 +6,7 @@
 
 namespace
 {
-constexpr char kBleDeviceNamePrefix[] = "EggDuino_";
+constexpr char kBleDeviceNamePrefix[] = "EggBot_";
 constexpr char kBleServiceUuid[] = "6e400001-b5a3-f393-e0a9-e50e24dcca9e";
 constexpr char kBleRxCharUuid[] = "6e400002-b5a3-f393-e0a9-e50e24dcca9e";
 constexpr char kBleTxCharUuid[] = "6e400003-b5a3-f393-e0a9-e50e24dcca9e";
@@ -30,18 +30,6 @@ void logBleDiag(const String &message)
 	Log(message);
 }
 
-void buildBleDeviceName(char *nameBuffer, size_t bufferSize)
-{
-	if ((nameBuffer == NULL) || (bufferSize == 0))
-	{
-		return;
-	}
-
-	// Tasmota-style chip ID uses the lower 24 bits of the ESP32 efuse MAC.
-	const uint32_t chipId = static_cast<uint32_t>(ESP.getEfuseMac() & 0xFFFFFFULL);
-	snprintf(nameBuffer, bufferSize, "%s%06X", kBleDeviceNamePrefix, chipId);
-}
-
 bool queueBleByte(uint8_t value)
 {
 	bool queued = false;
@@ -112,7 +100,7 @@ class EggDuinoBleRxCallbacks : public NimBLECharacteristicCallbacks
 void startBleInterface()
 {
 	char bleDeviceName[32] = {0};
-	buildBleDeviceName(bleDeviceName, sizeof(bleDeviceName));
+	buildDeviceName(bleDeviceName, sizeof(bleDeviceName));
 	if (bleDeviceName[0] == '\0')
 	{
 		snprintf(bleDeviceName, sizeof(bleDeviceName), "%sUNKNOWN", kBleDeviceNamePrefix);

src/Config_Web.cpp

@@ -8,11 +8,15 @@ namespace
 	const char *kConfigPath = "/config.json";
 	const size_t kConfigJsonCapacity = 4096;
 	const byte kDnsPort = 53;
+	const unsigned long kWifiReconnectIntervalMs = 10000;
 
 	WebServer server(80);
 	DNSServer dnsServer;
 	bool configStoreReady = false;
 	bool apModeActive = false;
+	bool staReconnectEnabled = false;
+	bool staConnectionKnown = false;
+	unsigned long lastStaReconnectAttemptMs = 0;
 
 	void redirectToRoot()
 	{
@@ -82,6 +86,7 @@ button { margin-top: 18px; border: 0; background: #0b5ed7; color: white; padding
 #status { margin-top: 12px; min-height: 1.2em; }
 #log { margin-top: 20px; border: 1px solid #d6dfef; border-radius: 8px; background: #0f172a; color: #d2e3ff; padding: 10px; height: 220px; overflow-y: auto; white-space: pre-wrap; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; font-size: 0.9rem; }
 #logTitle { margin-top: 24px; margin-bottom: 8px; font-weight: 700; }
+#downloadPrintLog { display: inline-block; margin-top: 8px; color: #0b5ed7; text-decoration: none; font-weight: 600; }
 </style>
 </head>
 <body>
@@ -91,6 +96,7 @@ button { margin-top: 18px; border: 0; background: #0b5ed7; color: white; padding
 <button id="saveBtn" type="button">Speichern</button>
 <div id="status"></div>
 <div id="logTitle">Logs</div>
+<a id="downloadPrintLog" href="/api/print-log.txt" download="incoming-print-log.txt">Incoming print log herunterladen</a>
 <div id="log"></div>
 </main>
 <script>
@@ -261,6 +267,15 @@ async function pollLogs() {
 		server.send(200, "application/json", buildLogsJson(since));
 	}
 
+	void handleDownloadPrintLog()
+	{
+		server.sendHeader("Cache-Control", "no-store, no-cache, must-revalidate");
+		server.sendHeader("Pragma", "no-cache");
+		server.sendHeader("Expires", "0");
+		server.sendHeader("Content-Disposition", "attachment; filename=\"incoming-print-log.txt\"");
+		server.send(200, "text/plain; charset=utf-8", buildIncomingPrintLogText());
+	}
+
 	void handleNotFound()
 	{
 		if (apModeActive)
@@ -275,6 +290,44 @@ async function pollLogs() {
 		}
 		handleRoot();
 	}
+
+	void handleWifiReconnect()
+	{
+		if (!staReconnectEnabled || apModeActive)
+		{
+			return;
+		}
+
+		const wl_status_t wifiStatus = WiFi.status();
+		if (wifiStatus == WL_CONNECTED)
+		{
+			if (!staConnectionKnown)
+			{
+				staConnectionKnown = true;
+				Log(String("WLAN verbunden: ") + WiFi.localIP().toString());
+			}
+			return;
+		}
+
+		if (staConnectionKnown)
+		{
+			staConnectionKnown = false;
+			Log("WLAN Verbindung verloren");
+		}
+
+		const unsigned long now = millis();
+		if (now - lastStaReconnectAttemptMs < kWifiReconnectIntervalMs)
+		{
+			return;
+		}
+
+		lastStaReconnectAttemptMs = now;
+		if (!WiFi.reconnect())
+		{
+			WiFi.begin(g_sWifiSsid.c_str(), g_sWifiPassword.c_str());
+		}
+		Log("WLAN Reconnect versucht");
+	}
 } // namespace
 
 ConfigParameter configParameters[] = {
@@ -500,18 +553,23 @@ void startWebInterface()
 	initConfigStore();
 	bool staConnected = false;
 	apModeActive = false;
+	staReconnectEnabled = !g_sWifiSsid.isEmpty();
+	staConnectionKnown = false;
+	lastStaReconnectAttemptMs = millis();
 	dnsServer.stop();
-	String hostName = g_sHostname;
+	char deviceName[32] = {0};
-	hostName.trim();
+	buildDeviceName(deviceName, sizeof(deviceName));
+	String hostName = String(deviceName);
 	if (hostName.isEmpty())
 	{
-		hostName = "EggDuino";
+		hostName = "EggBot_UNKNOWN";
 	}
 	g_sHostname = hostName;
 
 	if (!g_sWifiSsid.isEmpty())
 	{
 		WiFi.mode(WIFI_STA);
+		WiFi.setAutoReconnect(true);
 		WiFi.setHostname(hostName.c_str());
 		WiFi.begin(g_sWifiSsid.c_str(), g_sWifiPassword.c_str());
 
@@ -523,6 +581,7 @@ void startWebInterface()
 			delay(250);
 		}
 		staConnected = (WiFi.status() == WL_CONNECTED);
+		staConnectionKnown = staConnected;
 		if (staConnected)
 		{
 			Serial.println(String("http://") + WiFi.localIP().toString());
@@ -536,6 +595,7 @@ void startWebInterface()
 		server.on("/api/config", HTTP_GET, handleGetConfig);
 		server.on("/api/config", HTTP_POST, handlePostConfig);
 		server.on("/api/logs", HTTP_GET, handleGetLogs);
+		server.on("/api/print-log.txt", HTTP_GET, handleDownloadPrintLog);
 		server.onNotFound(handleNotFound);
 		server.begin();
 		startWifiProtocolInterface();
@@ -546,11 +606,11 @@ void startWebInterface()
 #ifdef ESP32
 		WiFi.softAPsetHostname(hostName.c_str());
 #endif
-		if (WiFi.softAP("EggDuino"))
+		if (WiFi.softAP(hostName.c_str()))
 		{
 			apModeActive = true;
 			dnsServer.start(kDnsPort, "*", WiFi.softAPIP());
-			Serial.println(String("AP aktiv: EggDuino / http://") + WiFi.softAPIP().toString() + " (Name: " + hostName + ")");
+			Serial.println(String("AP aktiv: ") + hostName + " / http://" + WiFi.softAPIP().toString() + " (Name: " + hostName + ")");
 		}
 		else
 		{
@@ -562,6 +622,7 @@ void startWebInterface()
 	server.on("/api/config", HTTP_GET, handleGetConfig);
 	server.on("/api/config", HTTP_POST, handlePostConfig);
 	server.on("/api/logs", HTTP_GET, handleGetLogs);
+	server.on("/api/print-log.txt", HTTP_GET, handleDownloadPrintLog);
 	server.on("/generate_204", HTTP_GET, redirectToRoot);
 	server.on("/gen_204", HTTP_GET, redirectToRoot);
 	server.on("/hotspot-detect.html", HTTP_GET, redirectToRoot);
@@ -574,6 +635,8 @@ void startWebInterface()
 
 void handleWebInterface()
 {
+	handleWifiReconnect();
+
 	if (apModeActive)
 	{
 		dnsServer.processNextRequest();

src/Functions.cpp

@@ -1,5 +1,41 @@
 #include "EggDuino.h"
 
+namespace
+{
+bool g_bPrintSessionActive = false;
+
+void captureSerialProtocolLine(const char *line)
+{
+	captureIncomingPrintLine(line, PROTOCOL_TRANSPORT_SERIAL);
+}
+
+#ifdef ESP32
+void captureBleProtocolLine(const char *line)
+{
+	captureIncomingPrintLine(line, PROTOCOL_TRANSPORT_BLE);
+}
+
+void captureWifiProtocolLine(const char *line)
+{
+	captureIncomingPrintLine(line, PROTOCOL_TRANSPORT_WIFI);
+}
+#endif
+
+void startPrintSessionIfNeeded()
+{
+	if (!g_bPrintSessionActive)
+	{
+		clearIncomingPrintLog();
+		g_bPrintSessionActive = true;
+	}
+}
+
+void stopPrintSession()
+{
+	g_bPrintSessionActive = false;
+}
+}
+
 void queryPen()
 {
    Log(__FUNCTION__);
@@ -96,6 +132,8 @@ void stepperMove()
 		sendAck();
 		return;
 	}
+
+	startPrintSessionIfNeeded();
 	
 	prepareMove(duration, penStepsEBB, rotStepsEBB);
 	moveToDestination();
@@ -199,10 +237,12 @@ void enableMotors()
 		switch (cmd)
 		{
 		case 0:
+			stopPrintSession();
 			motorsOff();
 			sendAck();
 			break;
 		case 1:
+			startPrintSessionIfNeeded();
 			motorsOn();
 			sendAck();
 			break;
@@ -216,10 +256,12 @@ void enableMotors()
 		switch (value)
 		{
 		case 0:
+			stopPrintSession();
 			motorsOff();
 			sendAck();
 			break;
 		case 1:
+			startPrintSessionIfNeeded();
 			motorsOn();
 			sendAck();
 			break;
@@ -318,8 +360,11 @@ void makeComInterface()
 	};
 
 	registerCommands(SCmd);
+	SCmd.setLineHandler(captureSerialProtocolLine);
 #ifdef ESP32
 	registerCommands(g_BLECmd);
+	g_BLECmd.setLineHandler(captureBleProtocolLine);
 	registerCommands(g_WifiCmd);
+	g_WifiCmd.setLineHandler(captureWifiProtocolLine);
 #endif
 }

src/Helper_Functions.cpp

@@ -2,6 +2,10 @@
 
 namespace
 {
+#ifdef ESP32
+constexpr char kDeviceNamePrefix[] = "EggBot_";
+#endif
+
 int clampServoAngle(int angle)
 {
 	if (angle < 0)
@@ -36,6 +40,20 @@ uint_fast16_t servoSpeedFromRate(int rate)
 }
 }
 
+#ifdef ESP32
+void buildDeviceName(char *nameBuffer, size_t bufferSize)
+{
+	if ((nameBuffer == NULL) || (bufferSize == 0))
+	{
+		return;
+	}
+
+	// Tasmota-style chip ID uses the lower 24 bits of the ESP32 efuse MAC.
+	const uint32_t chipId = static_cast<uint32_t>(ESP.getEfuseMac() & 0xFFFFFFULL);
+	snprintf(nameBuffer, bufferSize, "%s%06X", kDeviceNamePrefix, chipId);
+}
+#endif
+
 void updateStepCorrectionFactors()
 {
 	if (g_iRotMicrostep <= 0)

src/Logging.cpp

@@ -3,12 +3,19 @@
 namespace {
 constexpr size_t kLogCapacity = 80;
 constexpr size_t kLogLineLength = 160;
+constexpr size_t kIncomingLogCapacity = 128;
+constexpr size_t kIncomingLogLineLength = SERIALCOMMAND_BUFFER + 24;
 
 char g_logLines[kLogCapacity][kLogLineLength];
 uint32_t g_logSeq[kLogCapacity];
 size_t g_logWritePos = 0;
 uint32_t g_nextLogSeq = 1;
 
+char g_incomingLogLines[kIncomingLogCapacity][kIncomingLogLineLength];
+uint32_t g_incomingLogSeq[kIncomingLogCapacity];
+size_t g_incomingLogWritePos = 0;
+uint32_t g_nextIncomingLogSeq = 1;
+
 void appendJsonEscaped(String &out, const char *text) {
 	out += "\"";
 	for (size_t i = 0; text[i] != '\0'; ++i) {
@@ -40,6 +47,18 @@ void appendJsonEscaped(String &out, const char *text) {
 	}
 	out += "\"";
 }
+
+const char *transportLabel(ProtocolTransport transport) {
+	switch (transport) {
+		case PROTOCOL_TRANSPORT_BLE:
+			return "BLE";
+		case PROTOCOL_TRANSPORT_WIFI:
+			return "WIFI";
+		case PROTOCOL_TRANSPORT_SERIAL:
+		default:
+			return "SERIAL";
+	}
+}
 } // namespace
 
 void Log(const String &message) {
@@ -89,3 +108,45 @@ String buildLogsJson(uint32_t sinceSeq) {
 	output += "}";
 	return output;
 }
+
+void captureIncomingPrintLine(const char *line, ProtocolTransport transport) {
+	if ((line == NULL) || (line[0] == '\0')) {
+		return;
+	}
+
+	snprintf(
+		g_incomingLogLines[g_incomingLogWritePos],
+		kIncomingLogLineLength,
+		"[%010lu] %s %s",
+		static_cast<unsigned long>(millis()),
+		transportLabel(transport),
+		line
+	);
+	g_incomingLogSeq[g_incomingLogWritePos] = g_nextIncomingLogSeq++;
+	g_incomingLogWritePos = (g_incomingLogWritePos + 1) % kIncomingLogCapacity;
+}
+
+String buildIncomingPrintLogText() {
+	String output;
+	output.reserve(4096);
+
+	for (size_t i = 0; i < kIncomingLogCapacity; ++i) {
+		const size_t idx = (g_incomingLogWritePos + i) % kIncomingLogCapacity;
+		if (g_incomingLogSeq[idx] == 0) {
+			continue;
+		}
+		output += g_incomingLogLines[idx];
+		output += "\n";
+	}
+
+	return output;
+}
+
+void clearIncomingPrintLog() {
+	for (size_t i = 0; i < kIncomingLogCapacity; ++i) {
+		g_incomingLogSeq[i] = 0;
+		g_incomingLogLines[i][0] = '\0';
+	}
+	g_incomingLogWritePos = 0;
+	g_nextIncomingLogSeq = 1;
+}