diff --git a/app/src/main/java/com/flywithu/carnav/RealService.java b/app/src/main/java/com/flywithu/carnav/RealService.java
index 3de53be..42dcd56 100644
--- a/app/src/main/java/com/flywithu/carnav/RealService.java
+++ b/app/src/main/java/com/flywithu/carnav/RealService.java
@@ -53,7 +53,7 @@ public class RealService extends Service {
         sendSerial(str,Charset.forName("UTF-8"));
     }
 
-    private void sendSerial(String str,Charset enc) {
+    private synchronized  void sendSerial(String str,Charset enc) {
         byte t1[] = new byte[]{0x55, 0x34, 0x50, 0x4C, 0x30, 0x33, 0x7C, 0x31, 0x2C, 0x31, 0x7C, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30};
         byte t2[] = new byte[]{0x55, 0x34, 0x50, 0x4C, 0x31, 0x33, 0x7C, 0x41, (byte) 0xec, (byte) 0xa7, (byte) 0x80, (byte) 0xec, (byte) 0x96, (byte) 0xb4, (byte) 0xeb, (byte) 0xb0, (byte) 0x98, 0x5a, 0x7c};
         byte t3[] = new byte[]{0x55, 0x34, 0x50, 0x4C, 0x32, 0x33, 0x7C, (byte) 0xfe, (byte) 0xff, 0x00, 0x41, (byte) 0xc9, (byte) 0xc0, (byte) 0xc5, (byte) 0xb4, (byte) 0xbc, 0x18, 0x00, 0x5a, 0x7c};
@@ -244,6 +244,37 @@ feff0041c9c0c5b4bc18005a
         iF.addAction("com.android.music.playbackcomplete");
         iF.addAction("com.android.music.queuechanged");
         registerReceiver(mReceiver, iF);
+
+        new Thread(new Runnable() {
+            @Override
+            public void run()
+            {
+
+                boolean myRun = true;
+                while (myRun)
+                {
+                    try
+                    {
+                        Thread.sleep(1000);
+                        SimpleDateFormat format1 = new SimpleDateFormat("00yyMMddHHmm");
+                        //   String f = format1.format(System.currentTimeMillis());
+                        String currentInfo = format1.format(new Date());
+                        String currentTime = String.format("TMST%s", currentInfo);
+                        sendSerial(currentTime);
+                        showToast(getApplication(), currentTime);
+                    }
+                    catch(InterruptedException e)
+                    {
+                        myRun = false;
+
+                    }
+                }
+
+            }
+
+        }).start();
+
+
         return START_NOT_STICKY;
     }
 
@@ -365,31 +396,4 @@ feff0041c9c0c5b4bc18005a
     };
 
 
-//    private void sendNotification(String messageBody) {
-//        Intent intent = new Intent(this, MainActivity.class);
-//        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
-//        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent, PendingIntent.FLAG_ONE_SHOT);
-//
-//        String channelId = "fcm_default_channel";//getString(R.string.default_notification_channel_id);
-//        Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
-//        NotificationCompat.Builder notificationBuilder =
-//                new NotificationCompat.Builder(this, channelId)
-//                        .setSmallIcon(R.mipmap.ic_launcher)//drawable.splash)
-//                        .setContentTitle("Service test")
-//                        .setContentText(messageBody)
-//                        .setAutoCancel(true)
-//                        .setSound(defaultSoundUri)
-//                        .setPriority(Notification.PRIORITY_HIGH)
-//                        .setContentIntent(pendingIntent);
-//
-//        NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
-//
-//        // Since android Oreo notification channel is needed.
-//        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-//            NotificationChannel channel = new NotificationChannel(channelId,"Channel human readable title", NotificationManager.IMPORTANCE_DEFAULT);
-//            notificationManager.createNotificationChannel(channel);
-//        }
-//
-//        notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
-//    }
 }
\ No newline at end of file