C# 串口总结 - 21ic电子网

[导读]一、串口初始化定义： using System.IO.Ports; SerialPort myPort = new SerialPort() 初始化：

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