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

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

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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

usingSystem;

usingSystem.Collections.Generic;

usingSystem.Linq;

usingSystem.Text;

usingSystem.IO.Ports;

namespaceModbus_Tcp_IP

{

publicclassHexCode

{

///

///

///编码,如"utf-8","gb2312"

///是否每字符用逗号分隔

///

publicstaticstringToHex（strings,stringcharset,boolfenge）

{

if（（s.Length%2）!

=0）

{

s+="";//空格

//thrownewArgumentException（"sisnotvalidchinesestring!

"）;

}

System.Text.Encodingchs=System.Text.Encoding.GetEncoding（charset）;

byte[]bytes=chs.GetBytes（s）;

stringstr="";

for（inti=0;i

{

str+=string.Format（"{0:

X}",bytes[i]）;

if（fenge&&（i!

=bytes.Length-1））

{

str+=string.Format（"{0}",","）;

}

}

returnstr.ToLower（）;

}

///

///

///编码,如"utf-8","gb2312"

///

publicstaticstringUnHex（stringhex,stringcharset）

{

if（hex==null）

thrownewArgumentNullException（"hex"）;

hex=hex.Replace（",",""）;

hex=hex.Replace（"\n",""）;

hex=hex.Replace（"\\",""）;

hex=hex.Replace（"",""）;

if（hex.Length%2!

=0）

{

hex+="20";//空格

//thrownewArgumentException（"hexisnotavalidnumber!

","hex"）;

}

//需要将hex转换成byte数组。

byte[]bytes=newbyte[hex.Length/2];

for（inti=0;i

{

try

{

//每两个字符是一个byte。

bytes[i]=byte.Parse（hex.Substring（i*2,2）,

System.Globalization.NumberStyles.HexNumber）;

}

catch

{

//Rethrowanexceptionwithcustommessage.

thrownewArgumentException（"hexisnotavalidhexnumber!

","hex"）;

}

}

System.Text.Encodingchs=System.Text.Encoding.GetEncoding（charset）;

returnchs.GetString（bytes）;

}

}

//________________________________________________________________________

classClass_SerialPort

{

///

///

///编码,如"utf-8","gb2312"

///是否每字符用逗号分隔

///

publicstringToHex（strings,stringcharset,boolfenge）

{

if（（s.Length%2）!

=0）

{

s+="";//空格

//thrownewArgumentException（"sisnotvalidchinesestring!

"）;

}

System.Text.Encodingchs=System.Text.Encoding.GetEncoding（charset）;

byte[]bytes=chs.GetBytes（s）;

stringstr="";

for（inti=0;i

{

str+=string.Format（"{0:

X}",bytes[i]）;

if（fenge&&（i!

=bytes.Length-1））

{

str+=string.Format（"{0}",","）;

}

}

returnstr.ToLower（）;

}

#regionCRC校验

///

staticbyte[]ArrayCRCHigh=

{

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,

0x80,0x41,0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,

0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,0x00,0xC1,

0x81,0x40,0x01,0xC0,0x80,0x41,0x01,0xC0,0x80,0x41,

0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,0x00,0xC1,

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,

0x01,0xC0,0x80,0x41,0x01,0xC0,0x80,0x41,0x00,0xC1,

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,

0x80,0x41,0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,

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,

0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,0x01,0xC0,

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,

0x80,0x41,0x00,0xC1,0x81,0x40

};

///

staticbyte[]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,0xDF,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,0x39,0xF9,0xF8,0x38,0x28,0xE8,0xE9,0x29,

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,

0xA5,0x65,0x64,0xA4,0x6C,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,

0x70,0xB0,0x50,0x90,0x91,0x51,0x93,0x53,0x52,0x92,

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,

0x44,0x84,0x85,0x45,0x87,0x47,0x46,0x86,0x82,0x42,

0x43,0x83,0x41,0x81,0x80,0x40

};

///

///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

publicbyte[]CRC16（byte[]data,intarrayLength）//CRC校验

{

byteCRCHigh=0xFF;//重置CRC高位校验码

byteCRCLow=0xFF;//重置CRC低位校验码

byteindex;

inti=0;

while（arrayLength-->0）

{

index=（System.Byte）（CRCHigh^data[i++]）;

CRCHigh=（System.Byte）（CRCLow^ArrayCRCHigh[index]）;

CRCLow=checkCRCLow[index];

}

byte[]ReturnData={data[0],data[1],data[2],data[3],CRCHigh,CRCLow};

//intCRC1=int.Parse（ReturnData[0].ToString（））;

//intCRC2=int.Parse（ReturnData[1].ToString（））;

//strings1=CRC1.ToString（"x"）;

//strings2=CRC2.ToString（"x"）;

//byte[]Bytedata={byte.Parse（s1）,byte.Parse（s2）};

returnReturnData;

}

#endregion

publicbyte[]TOHex（stringdata）//String转换为Hex码（即16进制数组）

{

intl=data.Length;

if（data.Length%2!

=0）

{

data+="";//空格

//thrownewArgumentException（"hexisnotavalidnumber!

","hex"）;

}

byte[]bytes=newbyte[data.Length/2];

for（inti=0;i

{

try

{

//每两个字符是一个byte。

bytes[i]=byte.Parse（data.Substring（i*2,2）,

System.Globalization.NumberStyles.HexNumber）;

}

catch

{

//Rethrowanexceptionwithcustommessage.

thrownewArgumentException（"hexisnotavalidhexnumber!

","hex"）;

}

}

returnbytes;

}

publicbyte[]SendData（stringsenddata）//String转换为Hex码（即16进制数组）

{

byte[]bytes=newbyte[senddata.Length/2];

for（inti=0;i

{

bytes[i]=Convert.ToByte（senddata.Substring（i*2,2）,16）;

}

returnbytes;

}

Form代码

usingSystem;

usingSystem.Collections.Generic;

usingSystem.ComponentModel;

usingSystem.Data;

usingSystem.Drawing;

usingSystem.Linq;

usingSystem.Text;

usingSystem.Windows.Forms;

namespaceModbus_Tcp_IP

{

publicpartialclassForm2:

Form

{

publicForm2（）

{

InitializeComponent（）;

}

Class_SerialPortcp=newClass_SerialPort（）;

#region串口操作

///

///设置串口号

///设置波特率

privatevoidConnection（stringProtname,intbaudrate）//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SetPortName

this.serialPort.BaudRate=baudrate;//设置波特率SetBaudRate

try

{

serialPort.Open（）;//打开串口

cbx_SerialProt.Enabled=false;//串口选择变为不可编辑

cbx_baud.Enabled=false;//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.Exceptione）{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";//打开串口按钮变更为“打开串口”

}

}

catch（System.Exceptione）//扑捉异常并返回异常信息

{

MessageBox.Show（e.ToString（））;

}

}

///

///输入待发送数组

privatevoidSendData（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

{

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.Exceptione）

{

MessageBox.Show（e.ToString（））;

}

}

#endregion

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