Windows UWA（物联网）蓝牙 RfcommService

Question

我正在尝试在两个 windows 10 台设备之间建立通信：

Raspberry PI 2 B + 蓝牙适配器
Surface 专业版

服务器位于raspberry pi：

private readonly Guid _rfcommChatServiceUuid = Guid.Parse("34B1CF4D-1069-4AD6-89B6-E161D79BE4D8");

private async void CreateServer()
    {
        _provider = await RfcommServiceProvider.CreateAsync(RfcommServiceId.FromUuid(_rfcommChatServiceUuid));
        _listener = new StreamSocketListener();

        _listener.ConnectionReceived += OnConnectionReceived;
        await _listener.BindServiceNameAsync(_provider.ServiceId.AsString(),SocketProtectionLevel.BluetoothEncryptionAllowNullAuthentication);

        InitializeServiceSdpAttributes(_provider);
        _provider.StartAdvertising(_listener);
    }

    const uint SERVICE_VERSION_ATTRIBUTE_ID = 0x0300;
    const byte SERVICE_VERSION_ATTRIBUTE_TYPE = 0x0A;   // UINT32
    const uint SERVICE_VERSION = 200;
    void InitializeServiceSdpAttributes(RfcommServiceProvider provider)
    {
        var writer = new DataWriter();
        writer.WriteByte(SERVICE_VERSION_ATTRIBUTE_TYPE);
        writer.WriteUInt32(SERVICE_VERSION);
        var data = writer.DetachBuffer();
        provider.SdpRawAttributes.Add(SERVICE_VERSION_ATTRIBUTE_ID, data);
    }

 async void OnConnectionReceived(
StreamSocketListener listener,
StreamSocketListenerConnectionReceivedEventArgs args)
    {

        _provider.StopAdvertising();
        _listener.Dispose();
        _listener = null;
        _socket = args.Socket;

地面客户：

   var services = await DeviceInformation.FindAllAsync(
              RfcommDeviceService.GetDeviceSelector(RfcommServiceId.FromUuid(_rfcommChatServiceUuid)));

服务集合为空。

这有什么问题？

谢谢

Answer 1

我认为值得尝试在客户端硬编码地址。服务器和客户端都有 sample C code 个 RFCOMM 连接。

Windows（通用）的蓝牙 RFCOMM 聊天示例是 here。

Windows UWA（物联网）蓝牙 RfcommService

Windows UWA (IoT) Bluetooth RfcommService

bluetooth

win-universal-app

iot