C# 串口总结

一、串口初始化

定义：

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

初始化：

1. //port初始化
2. public void _port_Init(string comName)
3. {
4. myPort.PortName = comName;
5. myPort.BaudRate = 9600;
6. myPort.DataBits = 8;
7. myPort.Parity = Parity.None;
8. myPort.ReadTimeout = 1000;
9. myPort.Open();
10. myPort.DataReceived += new SerialDataReceivedEventHandler(myPort_DataReceived);
11. }

二、串口接收事件

1. //接收事件
2. void myPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
3. {
4. if (myPort.IsOpen)
5. {
6. try
7. {
8. byte[] receiveData = new byte[myPort.BytesToRead];//用receiveData数组读取
9. myPort.Read(receiveData, 0, receiveData.Length);//读取数据
10. //myPort.DiscardInBuffer();
11. for (int i = 0; i < receiveData.Length; i++)
12. {
13. check[i] = receiveData[i];                             //简单的定义了一个byte check[1000]接收数据
14. Console.Write(check[i]);
15. }
16. string strRcv = null;
17. for (int i = 0; i < receiveData.Length; i++)
18. {
19. strRcv += receiveData[i].ToString("X2");//十六进制显示
20. }
21. /*使用委托，如果需要修改控件*/
22. }
23. catch (System.Exception ex)
24. {
25. MessageBox.Show(ex.Message, "出错提示");
26. }
27. }
28. }

三、串口发送

对应单片机里的串口中断

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

存留备份

1. //port发送
2. public void _port_DataSend(string strCommand)
3. {
4. //处理数字转换
5. string sendBuf = strCommand;
6. string sendnoNull = sendBuf.Trim();
7. string sendNOComma = sendnoNull.Replace(',', ' '); //去掉英文逗号
8. string sendNOComma1 = sendNOComma.Replace('，', ' '); //去掉中文逗号
9. string strSendNoComma2 = sendNOComma1.Replace("0x", ""); //去掉0x
10. strSendNoComma2.Replace("0X", ""); //去掉0X
11. //用' '分开成多个字符串，用strArray装
12. string[] strArray = strSendNoComma2.Split(' ');
13. int byteBufferLength = strArray.Length;//获取strArray个数
14. for (int i = 0; i < strArray.Length; i++)//排除空格数字
15. {
16. if (strArray[i] == "")
17. {
18. byteBufferLength--;
19. }
20. }
21. // int temp = 0;
22. byte[] byteBuffer = new byte[byteBufferLength];
23. int ii = 0;
24. for (int i = 0; i < strArray.Length; i++) //对获取的字符做相加运算
25. {
26. int decNum = 0;
27. decNum = Convert.ToInt32(strArray[i], 16); //atrArray[i] == 12时，temp == 18
28. try //防止输错，使其只能输入一个字节的字符
29. {
30. byteBuffer[ii] = Convert.ToByte(decNum);
31. }
32. catch (System.Exception ex)
33. {
34. MessageBox.Show("字节越界，请逐个字节输入！", "Error");
35. //tmSend.Enabled = false;
36. return;
37. }
38. ii++;
39. }
40. myPort.Write(byteBuffer, 0, byteBuffer.Length);
41. }

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