Question

我正在尝试使用符号设备的EMDK附带的Symbol.WPAN.Bluetooth。

有没有人碰巧有一个传输数据的工作示例？

Symbol的示例只是配对设备。（他们显然认为在个人区域网络示例中并不真正需要传输数据。）

无论如何，我知道这是一个很长的镜头，但如果有人让这个工作，我很乐意看到一些代码。

这是我尝试过的。我有一个设备按下按钮1和另一个设备按下按钮2。读取值始终为零长度字节数组。

using System.Text;
using System.Windows.Forms;
using Symbol.WPAN;
using Symbol.WPAN.Bluetooth;

namespace SmartDeviceProject1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Bluetooth bluetooth = new Bluetooth();
            if (bluetooth.IsEnabled != true)
            {
                bluetooth.Enable();
                bluetooth.RadioMode = BTH_RADIO_MODE.BTH_DISCOVERABLE_AND_CONNECTABLE;
            }

            RemoteDevice connectedDevice = null;
            foreach (RemoteDevice remoteDevice in MakeEnumerable(bluetooth.RemoteDevices))
            {
                if ((remoteDevice.Name == "WM_Dan")  && (remoteDevice.IsPaired == false))
                {
                    remoteDevice.Pair();
                    connectedDevice = remoteDevice;
                }
            }

            string test;
            test = "Testing this out";
            ASCIIEncoding encoding = new ASCIIEncoding();
            byte[] encTest = encoding.GetBytes(test);


            if (connectedDevice != null)
            {
                connectedDevice.WriteTimeout = 20000;
                connectedDevice.Write(encTest);
            }


        }

        public static IEnumerable<RemoteDevice> MakeEnumerable(RemoteDevices devices)
        {
            for (var i = 0; i < devices.Length; i++)
            {
                yield return devices[i];
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            Bluetooth bluetooth = new Bluetooth();

            if (bluetooth.IsEnabled != true)
            {
                bluetooth.Enable();
                bluetooth.RadioMode = BTH_RADIO_MODE.BTH_DISCOVERABLE_AND_CONNECTABLE;
            }

            RemoteDevice connectedDevice = null;
            foreach (RemoteDevice remoteDevice in MakeEnumerable(bluetooth.RemoteDevices))
            {
                if ((remoteDevice.Name == "WM_Dan2") && (remoteDevice.IsPaired == false))
                {
                    remoteDevice.Pair();
                    connectedDevice = remoteDevice;
                }
            }

            string test;
            test = "Testing this out";
            ASCIIEncoding encoding = new ASCIIEncoding();
            byte[] encTest = encoding.GetBytes(test);
            byte[] encTest2;
            string test2;

            if (connectedDevice != null)
            {
                connectedDevice.ReadTimeout = 20000;
                encTest2 = connectedDevice.Read(encTest.Length);
                test2 = encoding.GetString(encTest2, 0, encTest2.Length);
                MessageBox.Show(test2);
            }

        }

    }
}

Answer 1

我放弃了使用内置的com端口连接并在连接上打开了一个SerialPort对象。

SerialPort sp = new SerialPort();
sp.PortName = "COM" + connectedDevice.LocalComPort.ToString();
sp.BaudRate = 9600;
sp.DataBits = 8;
sp.Parity = Parity.None;
sp.StopBits = StopBits.One;

sp.Open();
sp.Open();
sp.DataReceived += new SerialDataReceivedEventHandler(sp_DataReceived);
sp.ErrorReceived += new SerialErrorReceivedEventHandler(sp_ErrorReceived);
sp.WriteLine(textBoxSend.Text);

我还发现即使他们的文档说LocalComPort是自动分配的，但这并不总是事实。最好使用他们的BTExplorer来设置它。

同样，OpenComPort可以在不应该使用的情况下工作 - 使用Reflector它显然是错误的。检查::CreateFile("COM" + port...)的返回值是否为0而不是-1（INVALID_HANDLE_VALUE）

Answer 2

我不知道这是否可以帮助任何人，但这是我几年前写的一段旧代码。

您必须清理它才能使其适用于您的应用程序。我的应用程序有一个TextBox控件，它从Global类读取并记录错误。改变它以适应你拥有的东西，它应该基本上是好的。

static class Scanner {

  const string _CODEFILE = "Scanner.cs - Scanner::";
  static int _baud = 9600;
  static int _bits = 8;
  static string _dataIn = null;
  static string _port = "COM1";
  static Parity _parity = Parity.None;
  static StopBits _stop = StopBits.One;
  static SerialPort _com1 = null;
  static TextBox _textbox = null;
  public enum ControlType { None, BadgeID, PartNumber, SerialNumber, WorkOrder };
  static ControlType _control;

  public static bool Available { get { return ((_com1 != null) && (_com1.IsOpen)); } }

  public static bool Close {
    get {
      if (_com1 == null) return true;
      try {
        if (_com1.IsOpen) {
          _com1.Close();
        }
        return (!_com1.IsOpen);
      } catch { }
      return false;
    }
  }

  public static string Open() {
    const string na = "Not Available";
    if (_com1 == null) {
      string reset = Reset();
      if (!String.IsNullOrEmpty(reset)) return reset;
    }
    try {
      _com1.Open();
      return (_com1.IsOpen) ? null : na;
    } catch (Exception err) {
      return err.Message;
    }
  }

  static void ProcessData(string incoming) {
    _dataIn += incoming;
    if ((_control != ControlType.None) && (_textbox != null)) {
      bool ok = false;
      string testData = _dataIn.Trim();
      switch (_control) {
        case ControlType.BadgeID:
          if (testData.Length == 6) {
            if (testData != BarCode.LOGOFF) {
              Regex pattern = new Regex(@"[0-9]{6}");
              ok = (pattern.Matches(testData).Count == 1);
            } else {
              ok = true;
            }
          }
          break;
        case ControlType.PartNumber:
          if (testData.Length == 7) {
            Regex pattern = new Regex(@"[BCX][P057][0-9]{5}");
            ok = (pattern.Matches(testData).Count == 1);
          }
          break;
        case ControlType.SerialNumber:
          if (testData.Length == 15) {
            Regex pattern = new Regex(@"[BCX][P057][0-9]{5} [0-9]{4} [0-9]{2}");
            ok = (pattern.Matches(testData).Count == 1);
          }
          break;
        case ControlType.WorkOrder:
          if (testData.Length == 6) {
            Regex pattern = new Regex(@"[0-9]{6}");
            ok = (pattern.Matches(testData).Count == 1);
          }
          break;
      }
      if (ok) {
        _textbox.Text = testData;
        _textbox.ScrollToCaret();
        _dataIn = null;
      }
    }
  }

  static string Reset() {
    if (_com1 != null) {
      try {
        if (_com1.IsOpen) {
          _com1.DiscardInBuffer();
          _com1.Close();
        }
      } catch (Exception err) {
        return err.Message;
      }
      Global.Dispose(_com1);
      _com1 = null;
    }
    try {
      _com1 = new SerialPort(_port, _baud, _parity, _bits, _stop);
      _com1.DataReceived += new SerialDataReceivedEventHandler(Serial_DataReceived);
      _com1.Open();
    } catch (Exception err) {
      return err.Message;
    }
    return null;
  }

  public static void ScanSource(ref TextBox objTextBox, ControlType objType) {
    _textbox = objTextBox;
    _control = objType;
    _dataIn = null;
  }

  static void Serial_DataReceived(object sender, SerialDataReceivedEventArgs e) {
    ProcessData(_com1.ReadExisting());
  }

  public static void Settings(string ComPort, int BaudRate, Parity ParityValue, int Bits, StopBits StopBit) {
    _port = ComPort;
    _baud = BaudRate;
    _parity = ParityValue;
    _bits = Bits;
    _stop = StopBit;
  }

  /// <summary>
  /// Closes the COM Port
  /// COM Port routines are ready to add as soon as I am
  /// </summary>
  static bool ComPortClose {
    get {
      if (_com1 == null) ComPortReset();
      return ((_com1 == null) ? true : _com1.IsOpen ? false : true);
    }
    set {
      if (_com1 == null) ComPortReset();
      else if (_com1.IsOpen) {
        _com1.DiscardInBuffer();
        _com1.Close();
      }
    }
  }
  /// <summary>
  /// Opens the COM Port
  /// </summary>
  static bool ComPortOpen {
    get {
      if (_com1 == null) ComPortReset();
      return (_com1 == null) ? false : _com1.IsOpen;
    }
    set {
      if (_com1 == null) ComPortReset();
      if ((_com1 != null) && (!_com1.IsOpen)) _com1.Open();
    }
  }
  /// <summary>
  /// Initialized the Serial Port on COM1
  /// </summary>
  static void ComPortReset() {
    if ((_com1 != null) && (_com1.IsOpen)) {
      _com1.Close();
      _com1 = null;
    }
    try {
      _com1 = new SerialPort("COM1", 9600, Parity.None, 8, StopBits.One);
    } catch (IOException err) {
      Global.LogError(_CODEFILE + "ComPortReset", err);
    }
  }

}

Symbol.WPAN.Bluetooth传输数据的示例

2 个答案: