Merge pull request #297 from zjs81/dev-improments

Improvements to path tracing and location handling

lib/services/app_debug_log_service.dart

@@ -51,6 +51,7 @@ class AppDebugLogService extends ChangeNotifier {
     String message, {
     String tag = 'App',
     AppDebugLogLevel level = AppDebugLogLevel.info,
+    bool noNotify = false,
   }) {
     if (!_enabled && !kDebugMode) return;
     if (!_enabled) {
@@ -72,22 +73,24 @@ class AppDebugLogService extends ChangeNotifier {
       _entries.removeRange(0, _entries.length - maxEntries);
     }
 
-    notifyListeners();
+    if (!noNotify) {
+      notifyListeners();
+    }
 
     // Also print to console for development
     debugPrint('[$tag] $message');
   }
 
-  void info(String message, {String tag = 'App'}) {
-    log(message, tag: tag, level: AppDebugLogLevel.info);
+  void info(String message, {String tag = 'App', bool noNotify = false}) {
+    log(message, tag: tag, level: AppDebugLogLevel.info, noNotify: noNotify);
   }
 
-  void warn(String message, {String tag = 'App'}) {
-    log(message, tag: tag, level: AppDebugLogLevel.warning);
+  void warn(String message, {String tag = 'App', bool noNotify = false}) {
+    log(message, tag: tag, level: AppDebugLogLevel.warning, noNotify: noNotify);
   }
 
-  void error(String message, {String tag = 'App'}) {
-    log(message, tag: tag, level: AppDebugLogLevel.error);
+  void error(String message, {String tag = 'App', bool noNotify = false}) {
+    log(message, tag: tag, level: AppDebugLogLevel.error, noNotify: noNotify);
   }
 
   void clear() {

lib/services/app_settings_service.dart

@@ -182,4 +182,12 @@ class AppSettingsService extends ChangeNotifier {
       ..remove(channelName);
     await updateSettings(_settings.copyWith(mutedChannels: updated));
   }
+
+  Future<void> setTcpServerAddress(String value) async {
+    await updateSettings(_settings.copyWith(tcpServerAddress: value));
+  }
+
+  Future<void> setTcpServerPort(int value) async {
+    await updateSettings(_settings.copyWith(tcpServerPort: value));
+  }
 }

lib/services/usb_serial_service_native.dart

@@ -189,6 +189,10 @@ class UsbSerialService {
           serial.setStopBits1();
           serial.setFlowControlNone();
           serial.setRTS(false);
+          // Toggle DTR low→high so the device sees a fresh connection even
+          // if the previous disconnect didn't cleanly signal DTR drop.
+          serial.setDTR(false);
+          await Future<void>.delayed(const Duration(milliseconds: 50));
           serial.setDTR(true);
           _serial = serial;
           // Update the normalized port name to whichever candidate succeeded.
@@ -249,6 +253,21 @@ class UsbSerialService {
     _status = UsbSerialStatus.connected;
   }
 
+  Future<void> writeRaw(Uint8List data) async {
+    if (!isConnected) {
+      throw StateError('USB serial port is not open');
+    }
+    if (_useAndroidUsbHost) {
+      try {
+        await _androidMethodChannel.invokeMethod<void>('write', {'data': data});
+      } on PlatformException catch (error) {
+        throw StateError(error.message ?? error.code);
+      }
+    } else {
+      _serial!.write(data);
+    }
+  }
+
   Future<void> write(Uint8List data) async {
     if (!isConnected) {
       throw StateError('USB serial port is not open');
@@ -300,6 +319,7 @@ class UsbSerialService {
       _serial = null;
       try {
         if (serial?.isOpen() == FlOpenStatus.open) {
+          serial?.setDTR(false);
           serial?.closePort();
         }
       } catch (_) {
@@ -350,6 +370,7 @@ class UsbSerialService {
       final serial = _serial;
       try {
         if (serial?.isOpen() == FlOpenStatus.open) {
+          serial?.setDTR(false);
           serial?.closePort(); // synchronous C call — kills the SerialThread
         }
       } catch (_) {}

lib/services/usb_serial_service_web.dart

@@ -127,6 +127,17 @@ class UsbSerialService {
     }
   }
 
+  Future<void> writeRaw(Uint8List data) async {
+    if (!isConnected || _writer == null) {
+      throw StateError('USB serial port is not open');
+    }
+    final promise = _writer!.callMethod<JSPromise<JSAny?>>(
+      'write'.toJS,
+      data.toJS,
+    );
+    await promise.toDart;
+  }
+
   Future<void> write(Uint8List data) async {
     if (!isConnected || _writer == null) {
       throw StateError('USB serial port is not open');