Merge pull request #6 from Ambient-Node/bugfix/#5

Fix: 전원 버튼, 블루투스 연결 분리 & 연결 확인 팝업 타이밍 문제 해결 #5

Author: JJiiyun

ambient_node/lib/main.dart

@@ -78,12 +78,15 @@ class _MainShellState extends State<MainShell> {
   }
 
   void sendState() {
-    ble.send({
-      'powerOn': powerOn,
-      'speed': speed,
-      'trackingOn': trackingOn,
-      'selectedFaceId': selectedFaceId,
-    });
+    // 연결되어 있을 때만 전송
+    if (connected) {
+      ble.send({
+        'powerOn': powerOn,
+        'speed': speed,
+        'trackingOn': trackingOn,
+        'selectedFaceId': selectedFaceId,
+      });
+    }
   }
 
   @override

ambient_node/lib/services/ble_service.dart

@@ -125,7 +125,7 @@ class BleService {
       }
 
       _txChar = candidate;
-      onConnectionStateChanged?.call(true);
+      // 연결 상태는 _startConnectionMonitoring에서 실제 연결 확인 후 설정
       return true;
     } catch (error) {
       print('BLE connection error: $error');
@@ -156,6 +156,7 @@ class BleService {
     if (_device != null) {
       _connectionSubscription = _device!.connectionState.listen((state) {
         final isConnected = state == BluetoothConnectionState.connected;
+        print('BLE connection state: $state, connected: $isConnected');
         onConnectionStateChanged?.call(isConnected);
         if (!isConnected) {
           _txChar = null;