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1、modbus（C語言程序）  2009-10-15 09:31:28|  分類： 默認分類|字號 訂閱#include <REGX52.H>#include<intrins.h>/_nop_();#define  OSFREQ 11059200char TimeInterval;char MyAddress;            char data DI6=1,2,3,4,5,6;

2、 char data DO6=6,7,8,9,10,11; char data AI6=11,12,13,14,15,16;char data AO6=16,17,18,19,20,21;   unsigned char data ReceiveData14;unsigned char data  countnumber;sbit Recenable  =P16;/控制端   sbit led  =P27;/控制端/*-函數說明：CRC 高位字節值表-*/static unsigned char

3、 code auchCRCHi = 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,                 

4、60;                                            0x80, 0x41, 0x01, 0xC0, 0x80, 0x4

5、1, 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, 0x

6、80, 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, 0

7、xC1, 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, 0xC0,1 / 140x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81,

8、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,

9、 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,0x80, 0x41, 0x00, 0xC1, 0x81, 0x40 ;/*-函數說明：CRC低位字節值表-*/static unsigned char code auchCRCLo = 0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06,0x07, 0xC7, 0x05, 0xC5, 0xC4, 0x04, 0xCC, 0x0C, 0x0D, 0xCD,0x0F, 0xCF, 0xCE,

10、 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

11、, 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, 0xE

12、1, 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, 0x

13、7C, 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, 0

14、x49, 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;/*-調用方式：unsigned int CRC16(unsigned char *puchMsg, unsigned int usDataLen)函數說明：CRC校驗-*/unsigned int CRC16(unsigned char *puch

15、Msg, unsigned int usDataLen)  unsigned char uchCRCHi = 0xFF ;    / 高CRC字節初始化   unsigned char uchCRCLo = 0xFF ;    / 低CRC 字節初始化  unsigned uIndex ;                  /

16、CRC循環中的索引   while (usDataLen-)                / 傳輸消息緩沖區        uIndex = uchCRCHi *puchMsg+ ; / 計算CRC             uchCRCHi = u

17、chCRCLo auchCRCHiuIndex ;    uchCRCLo = auchCRCLouIndex ;    return (uchCRCHi << 8 | uchCRCLo) ;/*-調用方式：unsigned char getbit(unsigned int  address,unsigned char  function)函數說明：取出所給地址的位值-*/unsigned char getbit(unsigned int  address,unsigned char  fun

18、ction)  unsigned char data Offset;  unsigned char data temp;  unsigned char data *Myaddress;    Offset=(char)address&0x07;  switch (function)                 /根據功能碼不同進行相應處理  &#

19、160;  case 2:           Myaddress=DI;           break;   case 1:           Myaddress=DO;        

20、;                break;   default:           return 2;    temp=(char)(address>>3);  temp=*(Myaddress+temp);  temp>>=(Offset);  i

21、f (temp&0x01)    return 1;  else    return 0;/*-調用方式：void SendData(unsigned char  *output,unsigned char  Outlength)函數說明：發送數據至窗口-*/void SendData(unsigned char  *output,unsigned char  Outlength)    ES=0;  while(Outlength-)&

22、#160;       TI=0;    ACC=*output;    TB8=P;    SBUF=*(output+);    while(!TI);    TI=0;         ES=1;/*-調用方式：void Function12(unsigned char address,unsigned char len)

23、函數說明：功能碼1，2處理-*/void Function12(unsigned char address,unsigned char len)  unsigned int data i;  unsigned char data j;  unsigned char data length;  unsigned char data *send;  unsigned int data temp;  unsigned char data function;  length=0;  send=ReceiveData;

24、60; function=send1;  for (i=1;i<=len;i+)      length+;    *(send+2+length)=0;    for (j=0;j<8;j+)          *(send+2+length)=*(send+2+length)|getbit(address,function)<<j;   address+;&#

25、160;  i+;   if(i>len)break;        i-;    *(send+2)=length;                        /數據長度  temp=CRC16(send,length+3); 

26、              /DI狀態數據  *(send+3+length)=(char)(temp>>8);        /CRC校驗高  *(send+4+length)=(char)temp;             /CRC校驗低

27、60; SendData(send,length+5);                 /調用A發送程序/*-調用方式：void Function3(unsigned char  address,unsigned char  len)函數說明：功能碼3處理-讀取寄存器-*/void Function3(unsigned char  address,unsigned char  len) 

28、; unsigned char data i;  unsigned char data *send;  unsigned int data temp;  send=ReceiveData;  *(send+2)=2*len;                         /數據長度高  address=2*

29、address;  for(i=0;i<len;i+)                       /取輸入寄存器數據      *(send+3+2*i)=AOaddress+;    *(send+4+2*i)=AOaddress+;    temp=CRC16(sen

30、d,2*len+3);                /CRC校驗  *(send+3+2*len)=(char)(temp>>8);  *(send+4+2*len)=(char)temp;  SendData(send,2*len+5);              

31、;    /調用A發送程序/*-調用方式：void Function4(unsigned char  address,unsigned char  len)函數說明：功能碼處理4-讀取輸入寄存器-*/void Function4(unsigned char  address,unsigned char  len)  unsigned char data i;  unsigned char data *send;  unsigned int data temp;  send=Receiv

32、eData;  *(send+2)=2*len;  address=2*address;  for(i=0;i<len;i+)                       /取數據      *(send+4+2*i)=AIaddress+;    *(send+3+2*i

33、)=AIaddress+;    temp=CRC16(send,2*len+3);  *(send+3+2*len)=(char)(temp>>8);  *(send+4+2*len)=(char)temp;  SendData(send,2*len+5); /*-調用方式：void Function6(unsigned char address)函數說明：寫單路寄存器-*/void Function6(unsigned char address)  int temp;  unsigned char

34、data *WriteData;  temp=2*address;  WriteData=AO;  /將寫入的數據進行處理  /your code to add here to deal with the write value  *(WriteData+temp)=ReceiveData4;  *(WriteData+temp+1)=ReceiveData5;  SendData(ReceiveData,countnumber);       /調用發送程序，返回

35、與主機相同的報文/*-調用方式：void SendError(char ErrorCode)函數說明：-*/void SendError(char ErrorCode)  unsigned char data *send;  unsigned int data temp;  send=ReceiveData;  *(send+1)=ReceiveData1|0x01;/最高位置1  *(send+2)=ErrorCode;  temp=CRC16(send,3);  *(send+3)=(char)(temp>>

36、8);  *(send+4)=(char)temp;  SendData(send,countnumber);              /調用發送程序,返回錯誤代碼/*-調用方式：void Deal()函數說明：接收數據處理-*/void Deal()  unsigned int data temp;  unsigned char data address;  unsigned char data length;&

37、#160; unsigned char data counter;  unsigned char data *Pointer;  Pointer=ReceiveData;  counter=countnumber;  if (counter<=3 ) return;  temp=Pointercounter-2<<8;     temp= temp|Pointercounter-1;  if( temp=CRC16(Pointer,counter-2)  &

38、#160;   /較驗正確       address=Pointer3;    length=Pointer5;    if(address<48)          switch (Pointer1)               

39、   /根據功能碼不同進行相應處理*/       case 1:            Function12(address,length);            break;    case 2:      

40、60;     Function12(address,length);            break;    case 3:            address=address-1;          &

41、#160; Function3(address,length);            break;    case 4:            address=address-1;            Function4(address

42、,length);            break;    case 6:            address=address-1;            Function6(address);    de

43、fault:               SendError(0x81);               break;              else    SendError(

44、0x82);    countnumber=0;/*bit Chargetbit(unsigned char character,unsigned char Number)    if(character>>Number&0x01=1)    return 1;  else    return 0;/設定某一位的值*unsigned char SetBit(unsigned char Character,unsigned char num,bit bool

45、en)  unsigned char code bit_value=1,2,4,8,16,32,64,128;  if(boolen)     return Character|bit_valuenum;  else    return Character&bit_valuenum;*/*-調用方式：void Init_timer2(unsigned int baudrate)函數說明：定時器2的初始化-*/void Init_timer2(unsigned int baudrate)&

46、#160; unsigned int data TimReg2;  T2CON = 0x00;  T2MOD = 0x00;  TimReg2=65536-(OSFREQ/384/baudrate*11);  RCAP2L=TimReg2&0x00ff;  RCAP2H=(TimReg2>8);       /RCAP2H=TimReg2/256  RCAP2L=0; RCAP2H=0;  TL2  = RCAP2L; &

47、#160;                        /   TH2  = RCAP2H;                    

48、60;     /   TR2=1;                                  / T2CON.2 start timer    ET2=0; &

49、#160;                                / 開定時器2中斷/*-調用方式：void Init_SerialPort(unsigned int baudrate)函數說明：串口初始化-*/void Init_SerialPort(unsigned int b

50、audrate)  unsigned char TimReg2;  SCON = 0xd0;                            / 方式3, 8-bit UART, enable rcvr        TMOD = 0

51、x21;                            / T0方式1（16位）,  T1方式2,8位重裝          TimReg2=256-(OSFREQ/384/baudrate);  TH1 = T

52、imReg2;                          / 定時器1,在11.0592MHz下,波特率為9600     TL1 = TH1;  TR1= 1;           

53、;                      / TR1:  定時開始                          

54、;  /PS=1;                                 / 串行中斷優先  ES=1;            &

55、#160;                    / 接收中斷/*-函數說明：主函數-*/main()    EA=1;                     

56、0;             /開總中斷  Init_SerialPort(9600);  Init_timer2(9600);  Recenable=0;                        

57、60;   /接收允許  MyAddress=0x01;                         /本機地址  while(1)            /*-調用方式：void SeiralA() interrupt 4 using 0函數說明：通訊中斷-*/void SeiralA() interrupt 4 using 0  if(RI)       if(TimeInterval>2)&&(TimeInterval<=4)     countnumber=0;  &#

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