求救! serialport 串口通讯类的调用方法
.net 新手求救,最近做个纸币接收器的想项目 使用serialport 与串口通讯,因为要使用两台不通品牌的纸币接收器,所以网上找了个叶帆的【C#】串口操作实用类 地址:http://blog.csdn.net/yefanqiu/archive/2007/03/27/1543187.aspx
public class PortData
{
public event PortDataReceivedEventHandle Received;
public event SerialErrorReceivedEventHandler Error;
public SerialPort port;
public bool ReceiveEventFlag = false; //接收事件是否有效 false表示有效
public PortData(string sPortName, int baudrate,Parity parity,SerialInterface.SerialMode mode)
{
port = new SerialPort(sPortName, baudrate, parity, 8, StopBits.One);
port.RtsEnable = true;
port.ReadTimeout = 3000;
port.DataReceived += new SerialDataReceivedEventHandler(DataReceived);
port.ErrorReceived += new SerialErrorReceivedEventHandler(ErrorEvent);
}
~PortData()
{
Close();
}
public void Open()
{
if (!port.IsOpen)
{
port.Open();
}
}
public void Close()
{
if (port.IsOpen)
{
port.Close();
}
}
//数据发送
public void SendData(byte[] data)
{
if (port.IsOpen)
{
port.Write(data, 0, data.Length);
}
}
public void SendData(byte[] data,int offset,int count)
{
if (port.IsOpen)
{
port.Write(data, offset, count);
}
}
//发送命令
public int SendCommand(byte[] SendData, ref byte[] ReceiveData,int Overtime)
{
if(port.IsOpen)
{
ReceiveEventFlag = true; //关闭接收事件
port.DiscardInBuffer(); //清空接收缓冲区
port.Write(SendData, 0, SendData.Length);
int num=0,ret=0;
while (num++ < Overtime)
{
if (port.BytesToRead >= ReceiveData.Length) break;
System.Threading.Thread.Sleep(1);
}
if (port.BytesToRead >= ReceiveData.Length)
ret = port.Read(ReceiveData, 0, ReceiveData.Length);
ReceiveEventFlag = false; //打开事件
return ret;
}
return -1;
}
public void ErrorEvent(object sender, SerialErrorReceivedEventArgs e)
{
if (Error != null) Error(sender, e);
}
//数据接收
public void DataReceived(object sender, SerialDataReceivedEventArgs e)
{
//禁止接收事件时直接退出
if (ReceiveEventFlag) return;
byte[] data = new byte[port.BytesToRead];
port.Read(data, 0, data.Length);
if (Received != null) Received(sender, new PortDataReciveEventArgs(data));
}
public bool IsOpen()
{
return port.IsOpen;
}
}
public delegate void PortDataReceivedEventHandle(object sender, PortDataReciveEventArgs e);
public class PortDataReciveEventArgs : EventArgs
{
public PortDataReciveEventArgs()
{
this.data = null;
}
public PortDataReciveEventArgs(byte[] data)
{
this.data = data;
}
private byte[] data;
public byte[] Data
{
get { return data; }
set { data = value; }
}
}
纸币接收器的命令都是单字节的,如查询连接状态:02h(12) 接收器回应 80h 8f 表示正常 26h 表示不可用,具体如何调用该通用类的,新手!对事件和委托不太熟悉,请高手给予示例!谢谢