C# 编写的简单易懂的串口通讯代码带CRC校验 带详细的注释.docx

1、C# 编写的简单易懂的串口通讯代码带CRC校验 带详细的注释C# 编写的简单易懂的串口通讯代码带CRC校验 带详细的注释Class_SerialPort 类代码using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.IO.Ports;namespace Modbus_Tcp_IP public class HexCode / / 从汉字转换到16进制 / / / 编码,如utf-8,gb2312 / 是否每字符用逗号分隔 / public static stri

2、ng ToHex(string s, string charset, bool fenge) if (s.Length % 2) != 0) s += ;/空格 /throw new ArgumentException(s is not valid chinese string!); System.Text.Encoding chs = System.Text.Encoding.GetEncoding(charset); byte bytes = chs.GetBytes(s); string str = ; for (int i = 0; i bytes.Length; i+) str +=

3、 string.Format(0:X, bytesi); if (fenge & (i != bytes.Length - 1) str += string.Format(0, ,); return str.ToLower(); / / 从16进制转换成汉字 / / / 编码,如utf-8,gb2312 / public static string UnHex(string hex, string charset) if (hex = null) throw new ArgumentNullException(hex); hex = hex.Replace(, ); hex = hex.Rep

4、lace(n, ); hex = hex.Replace(, ); hex = hex.Replace( , ); if (hex.Length % 2 != 0) hex += 20;/空格 /throw new ArgumentException(hex is not a valid number!, hex); / 需要将 hex 转换成 byte 数组。 byte bytes = new bytehex.Length / 2; for (int i = 0; i bytes.Length; i+) try / 每两个字符是一个 byte。 bytesi = byte.Parse(hex

5、.Substring(i * 2, 2), System.Globalization.NumberStyles.HexNumber); catch / Rethrow an exception with custom message. throw new ArgumentException(hex is not a valid hex number!, hex); System.Text.Encoding chs = System.Text.Encoding.GetEncoding(charset); return chs.GetString(bytes); /_ class Class_Se

6、rialPort / / 从汉字转换到16进制 / / / 编码,如utf-8,gb2312 / 是否每字符用逗号分隔 / public string ToHex(string s, string charset, bool fenge) if (s.Length % 2) != 0) s += ;/空格 /throw new ArgumentException(s is not valid chinese string!); System.Text.Encoding chs = System.Text.Encoding.GetEncoding(charset); byte bytes = c

7、hs.GetBytes(s); string str = ; for (int i = 0; i bytes.Length; i+) str += string.Format(0:X, bytesi); if (fenge & (i != bytes.Length - 1) str += string.Format(0, ,); return str.ToLower(); #region CRC校验 / / CRC高位校验码checkCRCHigh / static byte ArrayCRCHigh = 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x

8、41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0x

9、C0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x

10、41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0x

11、C1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x

12、40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40 ; / / CRC

13、地位校验码checkCRCLow / static byte checkCRCLow = 0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7, 0x05, 0xC5, 0xC4, 0x04, 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E, 0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09, 0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9, 0x1B, 0xDB, 0xDA, 0x1A, 0x1E, 0xDE, 0xD

14、F, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC, 0x14, 0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3, 0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32, 0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4, 0x3C, 0xFC, 0xFD, 0x3D, 0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A, 0x3B, 0xFB, 0x3

15、9, 0xF9, 0xF8, 0x38, 0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF, 0x2D, 0xED, 0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26, 0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60, 0x61, 0xA1, 0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x6

16、4, 0xA4, 0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F, 0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB, 0x69, 0xA9, 0xA8, 0x68, 0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA, 0xBE, 0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5, 0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0, 0x5

17、0, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97, 0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C, 0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E, 0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89, 0x4B, 0x8B, 0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C, 0x44, 0x84, 0x8

18、5, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 0x43, 0x83, 0x41, 0x81, 0x80, 0x40 ; / / CRC校验 / / 校验的字节数组 / 校验的数组长度 / 该字节数组的奇偶校验字节 public byte CRC16(byte data, int arrayLength) /CRC校验 byte CRCHigh = 0xFF; /重置CRC高位校验码 byte CRCLow = 0xFF; /重置CRC低位校验码 byte index; int i = 0; while (arrayLength- 0) index =

19、 (System.Byte)(CRCHigh datai+); CRCHigh = (System.Byte)(CRCLow ArrayCRCHighindex); CRCLow = checkCRCLowindex; byte ReturnData = data0, data1, data2,data3, CRCHigh, CRCLow ; / int CRC1 = int.Parse(ReturnData0.ToString(); / int CRC2 = int.Parse(ReturnData1.ToString(); / string s1 = CRC1.ToString(x); /

20、 string s2 = CRC2.ToString(x); / byte Bytedata = byte.Parse(s1), byte.Parse(s2); return ReturnData; #endregion public byte TOHex(string data) /String 转换为Hex码（即16进制数组） int l = data.Length; if (data.Length % 2 != 0) data += ;/空格 /throw new ArgumentException(hex is not a valid number!, hex); byte bytes

21、 = new bytedata.Length / 2; for (int i = 0; i bytes.Length; i+) try / 每两个字符是一个 byte。 bytesi = byte.Parse(data.Substring(i * 2, 2), System.Globalization.NumberStyles.HexNumber); catch / Rethrow an exception with custom message. throw new ArgumentException(hex is not a valid hex number!, hex); return

22、bytes; public byte SendData(string senddata) /String 转换为Hex码（即16进制数组） byte bytes = new bytesenddata.Length / 2; for (int i = 0; i bytes.Length; i+) bytesi = Convert.ToByte(senddata.Substring(i * 2, 2), 16); return bytes; Form 代码using System;using System.Collections.Generic;using System.ComponentMode

23、l;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace Modbus_Tcp_IP public partial class Form2 : Form public Form2() InitializeComponent(); Class_SerialPort cp = new Class_SerialPort(); #region 串口操作 / / 打开关闭串口 / / 设置串口号 / 设置波特率 private void

24、 Connection(string Protname, int baudrate) /打开关闭串口 try if (!serialPort.IsOpen) /如果串口是关闭的 this.serialPort.PortName = Protname; /设置COM端口名称 Set PortName this.serialPort.BaudRate = baudrate; /设置波特率 Set BaudRate try serialPort.Open(); /打开串口 cbx_SerialProt.Enabled = false; /串口选择变为不可编辑 cbx_baud.Enabled = f

25、alse; /波特率选择变为不可编辑 btn_Open_SerialProt.Text = 关闭串口; /打开串口按钮 变更为“关闭串口” catch (System.Exception e) MessageBox.Show(e.ToString(); /扑捉异常 并返回异常信息 else /如果串口是打开的 serialPort.Close(); /关闭串口 cbx_SerialProt.Enabled = true; /串口选择更改为 可编辑 cbx_baud.Enabled = true; /波特率选择便跟为 可编辑 btn_Open_SerialProt.Text = 打开串口; /打

26、开串口按钮 变更为“打开串口” catch (System.Exception e) /扑捉异常 并返回异常信息 MessageBox.Show(e.ToString(); / / 数据发送 / / 输入待发送数组 private void SendData(Byte senddata) try if (senddata = null) /如果变量中无数据 MessageBox.Show(请输入数据, 提示, MessageBoxButtons.OK, MessageBoxIcon.Asterisk, MessageBoxDefaultButton.Button1); else /变量中有数据

27、 if (!serialPort.IsOpen) /如果串口未打开 MessageBox.Show(串口未初始化，请打开串口, 提示, MessageBoxButtons.OK, MessageBoxIcon.Asterisk, MessageBoxDefaultButton.Button1); else /如果串口已经打开 并且 变量中有数据 serialPort.Write(senddata, 0, senddata.Length); /将指定数量的字节写入串行端口 变量说明 （senddata“数组,0起始字节,senddata.Length“结束字节”） catch (System.Exception e) MessageBox.Show(e.ToString(); #endregion pr