在.Net（藍牙）中使用32feet接收連續數據

我正在創建一個Windows窗體應用程序，它通過藍牙連接到設備。我能夠向設備發送命令，並且我正在不斷收到數據。我面臨的問題是我無法在文本框中顯示連續的數據。該文本框僅顯示應用程序正在接收的第一行字符。這裏是我的代碼：在.Net（藍牙）中使用32feet接收連續數據

CONNECT按鈕動作：

private void btnConnect_Click(object sender, EventArgs e) 
    { 
     if (listBox.SelectedItem != null) 
     { 
      lblProgress.Text = ""; 

      btnStart.Enabled = true; 

      cBoxAvailablePorts.Enabled = cBoxAvailableBaudRates.Enabled = true; 

      try 
      { 
       int pos = listBox.SelectedIndex; 

       deviceInfo = array.ElementAt(pos); 

       if (pairDevice()) 
       { 
        Thread thread = new Thread(() => connectThread()); 
        thread.Start(); 
       } 
       else 
       { 
        MessageBox.Show("Pair failed!"); 
       } 
      } 
      catch (Exception ex) 
      { 
       MessageBox.Show(ex.ToString()); 
      } 
     } 
     else 
     { 
      MessageBox.Show("Please connect to a device!"); 
     } 
    }

螺紋ACTION

private void connectThread() 
    { 
     //BluetoothClient client = new BluetoothClient(); 
     bc.BeginConnect(deviceInfo.DeviceAddress, serviceClass, this.connectCallBack, bc); 
    }

回調ACTION：

private void connectCallBack(IAsyncResult result) 
    { 
     //BluetoothClient client = (BluetoothClient)result.AsyncState; 

     try 
     { 
      if (bc.Connected) 
      { 
       MessageBox.Show("Connected!"); 
      } 
      else 
      { 
       MessageBox.Show("Connection Failed!"); 
      } 
     } 
     catch (Exception) 
     { 
      MessageBox.Show("Not able to identify Bluetooth devices! Please try again.!"); 
     } 
    }

START按鈕動作：在這裏，我將命令發送「 S」。在按鈕操作中，我調用sendMessage（「S」）。被稱爲如下所示的功能：

public void sendMessage(string msg) 
    { 
     try 
     { 
      if (bc.Connected) 
      { 
       Stream stream = bc.GetStream(); 

       stream.ReadTimeout = 1000; 

       StreamWriter streamWriter = new StreamWriter(stream); 

       streamWriter.WriteLine(msg); 

       streamWriter.Flush(); 

       // Read operation 

       StreamReader streamReader = new StreamReader(stream); 

       string result = streamReader.ReadLine(); 

       txtResult.Text = result; 
      } 
      else 
      { 
       MessageBox.Show("Sending failed!"); 
      } 
     } 
     catch (Exception ex) 
     { 
      MessageBox.Show(ex.ToString()); 
     } 
    }

我在一個循環中寫的StreamReader的一部分，它給了我的Socket例外。我也嘗試從串行端口獲取數據並使用DataReceived事件以防萬一，但仍然沒有幫助。任何幫助，將不勝感激。謝謝！

來源

2017-10-05 Akhil Nair

OKAY！我解決了這個問題。不用惹惱32feet庫（儘管用32feet編寫代碼很有趣），我想通過串口進行通信。我將設備連接到筆記本電腦，並瞭解筆記本電腦藍牙設置中的傳出COMPORT。雙向通信只能通過傳出COMPORT完成，而不能通過傳入COMPORT完成。

假設傳出COMPORT是COM12和我已經設置波特率爲9600 因此，這裏是我的代碼：

public delegate void updateDelegate(string text); 

private updateDelegate objDelegate; 

private SerialPort serialPort; 

public View() // constructor 
{ 
     InitializeComponent(); 
     this.WindowState = FormWindowState.Normal; 
     this.StartPosition = FormStartPosition.CenterScreen; 
     this.objDelegate = new updateDelegate(getText); 

     serialPort = new SerialPort("COM12", 9600); 
     serialPort.Handshake = Handshake.None; 
     serialPort.Parity = Parity.None; 
     serialPort.StopBits = StopBits.One; 
     serialPort.DtrEnable = true; 
     serialPort.RtsEnable = true; 
}

START按鈕動作

private void btnStart_Click(object sender, EventArgs e) 
    { 
     sendData("S"); 
    }

// send命令

public void sendData(string msg) 
    { 
     try 
     { 
      if (!serialPort.IsOpen) 
      { 
       serialPort.Open(); 

       //serialPort.Close(); 
      } 

      if (serialPort.IsOpen) 
      { 
       serialPort.Write(msg); 
      } 
     } 
     catch (Exception ex) 
     { 
      MessageBox.Show(ex.ToString()); 
     } 
    }

//讀取數據

public void readData() 
    { 
     try 
     { 
      serialPort.DataReceived += SerialPort_DataReceived; 
     } 
     catch (Exception ex) 
     { 
      MessageBox.Show(ex.ToString()); 
     } 
    } 

    private void SerialPort_DataReceived(object sender, SerialDataReceivedEventArgs e) 
    { 
     string res = serialPort.ReadExisting(); 

     Thread.Sleep(500); 

     txtResult.Invoke(this.objDelegate, new object[] {res}); 
    } 

    public void getText(string text) 
    { 
     txtResult.Text = text; 
    }

我希望這會幫助別人！謝謝！！！

來源

2017-10-06 04:25:20

在.Net（藍牙）中使用32feet接收連續數據

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