fix: 修复蓝牙相关

lib/utils/bluetooth/bluetooth_manager.dart

@@ -53,6 +53,7 @@ class BleBluetoothManager<T> {
     Uuid? notifyCharacteristicUuid,
     Uuid? writeCharacteristicUuid,
     this.connectionTimeout = const Duration(seconds: 15),
+    this.enableCharacteristicDiscovery = false,
   })  : _parser = parser,
         _ble = ble ?? FlutterReactiveBle(),
         serviceUuid =
@@ -68,6 +69,7 @@ class BleBluetoothManager<T> {
   final Uuid notifyCharacteristicUuid;
   final Uuid writeCharacteristicUuid;
   final Duration connectionTimeout;
+  final bool enableCharacteristicDiscovery;
 
   final _scanDevicesController =
       StreamController<List<BluetoothScanDevice>>.broadcast();
@@ -94,6 +96,7 @@ class BleBluetoothManager<T> {
   StreamSubscription<List<int>>? _notifySubscription;
   Timer? _scanTimer;
   Future<void> _writeQueue = Future<void>.value();
+  Future<void>? _connectInProgress;
 
   final Map<String, BluetoothScanDevice> _scannedDevices = {};
 
@@ -253,7 +256,23 @@ class BleBluetoothManager<T> {
     return connectToDeviceId(device.remoteId);
   }
 
-  Future<void> connectToDeviceId(String deviceId) async {
+  Future<void> connectToDeviceId(String deviceId) {
+    final pending = _connectInProgress;
+    if (pending != null) {
+      debugPrint(
+        '🔥🔥🔥 BLE_CONNECT_DEBUG connect_join_existing deviceId=$deviceId',
+      );
+      return pending;
+    }
+
+    final task = _connectToDeviceIdLocked(deviceId);
+    _connectInProgress = task.whenComplete(() {
+      _connectInProgress = null;
+    });
+    return _connectInProgress!;
+  }
+
+  Future<void> _connectToDeviceIdLocked(String deviceId) async {
     debugPrint(
         '🔥🔥🔥 BLE_CONNECT_DEBUG connect_to_device_id start deviceId=$deviceId');
     if (deviceId.isEmpty) {
@@ -271,6 +290,7 @@ class BleBluetoothManager<T> {
     }
 
     await disconnect();
+    await Future<void>.delayed(const Duration(milliseconds: 600));
     _connectedDeviceId = deviceId;
     _notifyCharacteristic = QualifiedCharacteristic(
       deviceId: deviceId,
@@ -310,7 +330,9 @@ class BleBluetoothManager<T> {
             debugPrint(
                 '🔥🔥🔥 BLE_CONNECT_DEBUG state_connected deviceId=$deviceId');
             try {
-              await _discoverServicesAndResolveWriteCharacteristic(deviceId);
+              if (enableCharacteristicDiscovery) {
+                await _discoverServicesAndResolveWriteCharacteristic(deviceId);
+              }
               final notifyReady = await _enableNotifications(deviceId);
               if (notifyReady) {
                 activateDataSource();
@@ -536,7 +558,6 @@ class BleBluetoothManager<T> {
   ) async {
     try {
       Log.warn('🔥🔥🔥 BLE_DISCOVER_DEBUG start deviceId=$deviceId');
-      await _ble.discoverAllServices(deviceId);
       final services = await _ble.getDiscoveredServices(deviceId);
       QualifiedCharacteristic? fallbackWriteCharacteristic;
       QualifiedCharacteristic? fallbackNotifyCharacteristic;

lib/views/monitoring/index/cubit/monitoring_index_cubit.dart

@@ -47,6 +47,7 @@ class MonitoringIndexCubit extends Cubit<MonitoringIndexState> {
   bool _isAutoReconnectEnabled = false;
   bool _isAutoConnectingBluetooth = false;
   bool _isManualUnbindingBluetooth = false;
+  int _bluetoothReconnectAttempts = 0;
   bool _isMqttReconnectEnabled = false;
   bool _isMqttConnecting = false;
   String? _mqttDeviceSn;
@@ -586,8 +587,13 @@ class MonitoringIndexCubit extends Cubit<MonitoringIndexState> {
       return;
     }
 
+    final delaySeconds = ((_bluetoothReconnectAttempts + 1) * 5).clamp(5, 30);
+    debugPrint(
+      '🔥🔥🔥 BLE_CONNECT_DEBUG auto_reconnect_scheduled '
+      'delay=${delaySeconds}s attempts=$_bluetoothReconnectAttempts',
+    );
     _bluetoothReconnectTimer ??= Timer(
-      const Duration(seconds: 5),
+      Duration(seconds: delaySeconds),
       () {
         _bluetoothReconnectTimer = null;
         _connectBoundBluetoothDevice();
@@ -629,7 +635,11 @@ class MonitoringIndexCubit extends Cubit<MonitoringIndexState> {
               : '蓝牙自动连接未就绪，等待重试',
         ));
       }
+      if (_bluetoothManager.isConnected) {
+        _bluetoothReconnectAttempts = 0;
+      }
     } catch (e) {
+      _bluetoothReconnectAttempts++;
       debugPrint(
           '🔥🔥🔥 BLE_CONNECT_DEBUG auto_connect_error deviceId=$deviceId error=$e');
       if (!isClosed) {