C# 串口总结

一、串口初始化

定义：

using System.IO.Ports;
SerialPort myPort = new SerialPort()

初始化：

//port初始化
public void _port_Init(string comName)
{
myPort.PortName = comName;
myPort.BaudRate = 9600;
myPort.DataBits = 8;
myPort.Parity = Parity.None;
myPort.ReadTimeout = 1000;
myPort.Open();
myPort.DataReceived += new SerialDataReceivedEventHandler(myPort_DataReceived);
}

二、串口接收事件

//接收事件
void myPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
if (myPort.IsOpen)
{
try
{
byte[] receiveData = new byte[myPort.BytesToRead];//用receiveData数组读取
myPort.Read(receiveData, 0, receiveData.Length);//读取数据
//myPort.DiscardInBuffer();
for (int i = 0; i < receiveData.Length; i++)
{
check[i] = receiveData[i]; //简单的定义了一个byte check[1000]接收数据
Console.Write(check[i]);
}
string strRcv = null;
for (int i = 0; i < receiveData.Length; i++)
{
strRcv += receiveData[i].ToString("X2");//十六进制显示
}
/*使用委托，如果需要修改控件*/
}
catch (System.Exception ex)
{
MessageBox.Show(ex.Message, "出错提示");
}
}
}

三、串口发送

对应单片机里的串口中断

cmd = "55";
bytCmd[0] = Convert.ToByte(cmd.Substring(0, 2), 16);
myPort.Write(bytCmd, 0, 1);

存留备份

//port发送
public void _port_DataSend(string strCommand)
{
//处理数字转换
string sendBuf = strCommand;
string sendnoNull = sendBuf.Trim();
string sendNOComma = sendnoNull.Replace(',', ' '); //去掉英文逗号
string sendNOComma1 = sendNOComma.Replace('，', ' '); //去掉中文逗号
string strSendNoComma2 = sendNOComma1.Replace("0x", ""); //去掉0x
strSendNoComma2.Replace("0X", ""); //去掉0X
//用' '分开成多个字符串，用strArray装
string[] strArray = strSendNoComma2.Split(' ');
int byteBufferLength = strArray.Length;//获取strArray个数
for (int i = 0; i < strArray.Length; i++)//排除空格数字
{
if (strArray[i] == "")
{
byteBufferLength--;
}
}
// int temp = 0;
byte[] byteBuffer = new byte[byteBufferLength];
int ii = 0;
for (int i = 0; i < strArray.Length; i++) //对获取的字符做相加运算
{
int decNum = 0;
decNum = Convert.ToInt32(strArray[i], 16); //atrArray[i] == 12时，temp == 18
try //防止输错，使其只能输入一个字节的字符
{
byteBuffer[ii] = Convert.ToByte(decNum);
}
catch (System.Exception ex)
{
MessageBox.Show("字节越界，请逐个字节输入！", "Error");
//tmSend.Enabled = false;
return;
}
ii++;
}
myPort.Write(byteBuffer, 0, byteBuffer.Length);
}

四、一些参考目录：

http://blog.csdn.net/lllljz/article/details/7603400

http://www.cnblogs.com/elaron/archive/2011/03/15/1985378.html

http://blog.csdn.net/geekwangminli/article/details/7851673

http://blog.csdn.net/cy757/article/details/4474930

http://www.cnblogs.com/screes/p/5633383.html

巴特西

C# 串口总结

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