crc.c

用CS5532做的无线吊钩称的接收称重显示器程序

#include <reg52.h>
//多项式为X^8+X^5+X^4+1;

unsigned char code CrcTable[256] = {
//       0,   1,   2,   3,   4,   5,   6,   7,   8,   9,   a,   b,   c,   d,   e,   f
	0x00,0x31,0x62,0x53,0xC4,0xF5,0xA6,0x97,0xB9,0x88,0xDB,0xEA,0x7D,0x4C,0x1F,0x2E,
//      10,  11,  12,  13,  14,  15,  16,  17,  18,  19,  1a,  1b,  1c,  1d,  1e,  1f
	0x43,0x72,0x21,0x10,0x87,0xB6,0xE5,0xD4,0xFA,0xCB,0x98,0xA9,0x3E,0x0F,0x5C,0x6D,
//      20,  21,  22,  23,  24,  25,  26,  27,  28,  29,  2a,  2b,  2c,  2d,  2e,  2f
	0x86,0xB7,0xE4,0xD5,0x42,0x73,0x20,0x11,0x3F,0x0E,0x5D,0x6C,0xFB,0xCA,0x99,0xA8,
//      30,  31,  32,  33,  34,  35,  36,  37,  38,  39,  3a,  3b,  3c,  3d,  3e,  3f
	0xC5,0xF4,0xA7,0x96,0x01,0x30,0x63,0x52,0x7C,0x4D,0x1E,0x2F,0xB8,0x89,0xDA,0xEB,
//      40,  41,  42,  43,  44,  45,  46,  47,  48,  49,  4a,  4b,  4c,  4d,  4e,  4f
	0x3D,0x0C,0x5F,0x6E,0xF9,0xC8,0x9B,0xAA,0x84,0xB5,0xE6,0xD7,0x40,0x71,0x22,0x13,
//      50,  51,  52,  53,  54,  55,  56,  57,  58,  59,  5a,  5b,  5c,  5d,  5e,  5f
	0x7E,0x4F,0x1C,0x2D,0xBA,0x8B,0xD8,0xE9,0xC7,0xF6,0xA5,0x94,0x03,0x32,0x61,0x50,
//      60,  61,  62,  63,  64,  65,  66,  67,  68,  69,  6a,  6b,  6c,  6d,  6e,  6f
	0xBB,0x8A,0xD9,0xE8,0x7F,0x4E,0x1D,0x2C,0x02,0x33,0x60,0x51,0xC6,0xF7,0xA4,0x95,
//      70,  71,  72,  73,  74,  75,  76,  77,  78,  79,  7a,  7b,  7c,  7d,  7e,  7f
	0xF8,0xC9,0x9A,0xAB,0x3C,0x0D,0x5E,0x6F,0x41,0x70,0x23,0x12,0x85,0xB4,0xE7,0xD6,
//      80,  81,  82,  83,  84,  85,  86,  87,  88,  89,  8a,  8b,  8c,  8d,  8e,  8f
	0x7A,0x4B,0x18,0x29,0xBE,0x8F,0xDC,0xED,0xC3,0xF2,0xA1,0x90,0x07,0x36,0x65,0x54,
//      90,  91,  92,  93,  94,  95,  96,  97,  98,  99,  9a,  9b,  9c,  9d,  9e,  9f
	0x39,0x08,0x5B,0x6A,0xFD,0xCC,0x9F,0xAE,0x80,0xB1,0xE2,0xD3,0x44,0x75,0x26,0x17,
//      a0,  a1,  a2,  a3,  a4,  a5,  a6,  a7,  a8,  a9,  aa,  ab,  ac,  ad,  ae,  af
	0xFC,0xCD,0x9E,0xAF,0x38,0x09,0x5A,0x6B,0x45,0x74,0x27,0x16,0x81,0xB0,0xE3,0xD2,
//      b0,  b1,  b2,  b3,  b4,  b5,  b6,  b7,  b8,  b9,  ba,  bb,  bc,  bd,  be,  bf
	0xBF,0x8E,0xDD,0xEC,0x7B,0x4A,0x19,0x28,0x06,0x37,0x64,0x55,0xC2,0xF3,0xA0,0x91,
//      c0,  c1,  c2,  c3,  c4,  c5,  c6,  c7,  c8,  c9,  ca,  cb,  cc,  cd,  ce,  cf
	0x47,0x76,0x25,0x14,0x83,0xB2,0xE1,0xD0,0xFE,0xCF,0x9C,0xAD,0x3A,0x0B,0x58,0x69,
//      d0,  d1,  d2,  d3,  d4,  d5,  d6,  d7,  d8,  d9,  da,  db,  dc,  dd,  de,  df
	0x04,0x35,0x66,0x57,0xC0,0xF1,0xA2,0x93,0xBD,0x8C,0xDF,0xEE,0x79,0x48,0x1B,0x2A,
//      e0,  e1,  e2,  e3,  e4,  e5,  e6,  e7,  e8,  e9,  ea,  eb,  ec,  ed,  ee,  ef
	0xC1,0xF0,0xA3,0x92,0x05,0x34,0x67,0x56,0x78,0x49,0x1A,0x2B,0xBC,0x8D,0xDE,0xEF,
//      f0,  f1,  f2,  f3,  f4,  f5,  f6,  f7,  f8,  f9,  fa,  fb,  fc,  fd,  fe,  ff
	0x82,0xB3,0xE0,0xD1,0x46,0x77,0x24,0x15,0x3B,0x0A,0x59,0x68,0xFF,0xCE,0x9D,0xAC
};

unsigned char CalCrc(unsigned char CRC_t,unsigned char dat)
{
	return( CrcTable[CRC_t ^ dat]);
}

/*code unsigned int CRCtbl[ 256 ] = {                                 
   0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241,   
   0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440,   
   0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40,   
   0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841,   
   0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40,   
   0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41,   
   0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641,   
   0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040,   
   0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240,   
   0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441,   
   0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41,   
   0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840,   
   0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41,   
   0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40,   
   0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640,   
   0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041,   
   0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240,   
   0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441,   
   0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41,   
   0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840,   
   0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41,   
   0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40,   
   0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640,   
   0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041,   
   0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241,   
   0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440,   
   0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40,   
   0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841,   
   0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40,   
   0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41,   
   0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641,   
   0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040 }; 
                                                                     
                                                                     
unsigned short addCRC( unsigned short CRC, unsigned char b )         
{                                                                 
   return ( CRC >> 8 ) ^ CRCtbl[ ( CRC & 0xFF ) ^ b ];               
}*/
/*void main(void)
{
   unsigned char s[]="123456789";
   unsigned char *p;
   unsigned short crcdata;
   p=s;  
   while(*p !='\0')
   {
	    crcdata=addCRC(crcdata,*p++);	
   }   
   crcdata=0;
}*/                    
// 结果为0xbb3d 符合crc16 
/*
0000 1021 2042 3063 4084 50A5 60C6 70E7 
8108 9129 A14A B16B C18C D1AD E1CE F1EF 
1231 0210 3273 2252 52B5 4294 72F7 62D6 
9339 8318 B37B A35A D3BD C39C F3FF E3DE 
2462 3443 0420 1401 64E6 74C7 44A4 5485 
A56A B54B 8528 9509 E5EE F5CF C5AC D58D 
3653 2672 1611 0630 76D7 66F6 5695 46B4 
B75B A77A 9719 8738 F7DF E7FE D79D C7BC 
48C4 58E5 6886 78A7 0840 1861 2802 3823 
C9CC D9ED E98E F9AF 8948 9969 A90A B92B 
5AF5 4AD4 7AB7 6A96 1A71 0A50 3A33 2A12 
DBFD CBDC FBBF EB9E 9B79 8B58 BB3B AB1A 
6CA6 7C87 4CE4 5CC5 2C22 3C03 0C60 1C41 
EDAE FD8F CDEC DDCD AD2A BD0B 8D68 9D49 
7E97 6EB6 5ED5 4EF4 3E13 2E32 1E51 0E70 
FF9F EFBE DFDD CFFC BF1B AF3A 9F59 8F78 
9188 81A9 B1CA A1EB D10C C12D F14E E16F 
1080 00A1 30C2 20E3 5004 4025 7046 6067 
83B9 9398 A3FB B3DA C33D D31C E37F F35E 
02B1 1290 22F3 32D2 4235 5214 6277 7256 
B5EA A5CB 95A8 8589 F56E E54F D52C C50D 
34E2 24C3 14A0 0481 7466 6447 5424 4405 
A7DB B7FA 8799 97B8 E75F F77E C71D D73C 
26D3 36F2 0691 16B0 6657 7676 4615 5634 
D94C C96D F90E E92F 99C8 89E9 B98A A9AB 
5844 4865 7806 6827 18C0 08E1 3882 28A3 
CB7D DB5C EB3F FB1E 8BF9 9BD8 ABBB BB9A 
4A75 5A54 6A37 7A16 0AF1 1AD0 2AB3 3A92 
FD2E ED0F DD6C CD4D BDAA AD8B 9DE8 8DC9 
7C26 6C07 5C64 4C45 3CA2 2C83 1CE0 0CC1 
EF1F FF3E CF5D DF7C AF9B BFBA 8FD9 9FF8 
6E17 7E36 4E55 5E74 2E93 3EB2 0ED1 1EF0 
*/