找不到ID为蓝牙设备

Question

我想使用的Visual Studio 2013通过蓝牙连接到一个Arduino，Windows Phone的应用程序...

我能找到的设备没有任何问题得到一个错误说“找不到元素“当我用下面的代码：

await socket.ConnectAsync(MakeBlock.HostName, "5", 
         SocketProtectionLevel.BluetoothEncryptionAllowNullAuthentication); 

我试图修改代码以使用RfcommDeviceService获得服务名称，但是从PeerFinder对象ID为‘’，并没有设置connectService。

connectService = RfcommDeviceService.FromIdAsync(MakeBlock.Id); 

这是我尝试连接的完整代码：

#region App to Device.... 
      PeerFinder.AlternateIdentities["Bluetooth:SDP"] = "{00001101-0000-1000-8000-00805F9B34FB}"; 
      var pairedDevices = await PeerFinder.FindAllPeersAsync(); 
      tbLogger.Text = "Seaching for Connections..."; 

      if (pairedDevices.Count == 0) 
      { 
       tbLogger.Text = "Makeblock is not found..."; 
      } 
      else 
      { 
       tbLogger.Text = pairedDevices.Count.ToString() + " connections found!"; 

       for (int i = 0; i < pairedDevices.Count; i++) 
       { 
        PeerInformation selectedPeer = pairedDevices[i]; 
        tbLogger.Text = tbLogger.Text + "\r\n" + selectedPeer.DisplayName; 
        if (selectedPeer.DisplayName == "Makeblock") 
        { 
         MakeBlock = pairedDevices[i]; 
        } 
       } 

       tbLogger.Text = tbLogger.Text + "\r\n" + "---------------------------"; 

       try 
       { 
        StreamSocket socket = new StreamSocket(); 
        IAsyncOperation<RfcommDeviceService> connectService; 
        connectService = RfcommDeviceService.FromIdAsync(MakeBlock.Id); 
        RfcommDeviceService rfcommService = await connectService; 
        await socket.ConnectAsync(rfcommService.ConnectionHostName, rfcommService.ConnectionServiceName, 
         SocketProtectionLevel.BluetoothEncryptionAllowNullAuthentication); 
        tbLogger.Text = tbLogger.Text + "\r\n" + "Connection to MakeBlock has been made..."; 
       } 
       catch (Exception ex) 
       { 
        tbLogger.Text = tbLogger.Text + "\r\n" + "Could not connect to " + MakeBlock.DisplayName; 
        tbLogger.Text = tbLogger.Text + "\r\n" + ex.Message; 
       } 
      } 
      #endregion 

代码失败，因为MakeBlock.Id = “”

有什么建议？

Answer 1

好吧......我想通了。 :)

我刚添加的GUID到直接服务名...

  StreamSocket socket = new StreamSocket(); 
      await socket.ConnectAsync(MakeBlock.HostName, "{00001101-0000-1000-8000-00805F9B34FB}", 
       SocketProtectionLevel.PlainSocket); 
      tbLogger.Text = tbLogger.Text + "\r\n" + "Connection to MakeBlock has been made..."; 

这个作品！否发送消息来控制机器人。