Question

我在Hand库中使用写入字节和从蓝牙设备读取数据时遇到问题您可以在下面找到我使用的简单代码。

我发现设备，我配对设备，我创建本地客户端连接，然后通过

连接到设备

BluetoothEndPoint endPoint = new BluetoothEndPoint(addr, BluetoothService.SerialPort,1);
localClient.Connect(endPoint);

在我将字节写入设备之前一切正常，当我尝试这样做时，红色LED应该打开设备但没有任何事情发生....所以我认为该字节尚未写入....

无论如何，代码继续运行直到

int n = stream.Read(newdata[kn], numBytesRead, 1);

此处代码停止并等待无限时间而没有任何错误....

我做错了什么？为什么我发送的字节没有被写入？谢谢你的帮助！

BluetoothClient localClient = new BluetoothClient();
BluetoothDeviceInfo[] dev;
BluetoothDeviceInfo td = null;

addr = BluetoothAddress.Parse(Addr);

dev = localClient.DiscoverDevices();
foreach (BluetoothDeviceInfo d in dev)
{                      
    if (d.DeviceName == "Device_name")//my device name
    {
        td = d;
        break;
    }
}

try
{
    addr = td.DeviceAddress;

    if (!BluetoothSecurity.PairRequest(addr, null)) 
    {
        Console.WriteLine("Request failed");
    }
}
catch (Exception e)
{
    Console.WriteLine("Exception : " + e.Message);
    Console.Read();
}

BluetoothEndPoint endPoint = new BluetoothEndPoint(addr, BluetoothService.SerialPort,1);
localClient.Connect(endPoint);

Console.WriteLine(localClient.Connected);
NetworkStream stream = localClient.GetStream();

string config = "";
config = "240";

if (stream.CanWrite)
{
     byte[] data_conf = System.Text.Encoding.ASCII.GetBytes(config);              
     stream.Write(data_conf , 0, data_conf .Length);
     stream.Flush();
 }

 System.Threading.Thread.Sleep(100);

 int numBytesToRead = newdata[0].Length;
 int numBytesRead = 0;
 int nBytesRead = 0; // number of bytes read on each cycle

 //stream.ReadTimeout = 5;
 try
 {
      ////////read incoming bytes
      while (numBytesToRead > 0)
      {                        
          int n = stream.Read(newdata[kn], numBytesRead, 1);
          numBytesRead += n;
          numBytesToRead -= n;
      }
 }
 catch (Exception ex)
 {
       Console.Write(ex.Message);
 }

32feet.NET向/从蓝牙设备写入和读取字节

0 个答案: