代码下载地址
CRCModelBus 查表的方法const uint8 crc16_tab_h[] = {
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
};
const uint8 crc16_tab_l[] = {
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
};
uint16 calcCrc16(uint8 *data, int32 offset, int32 len, uint32 preval)
{
uint32 ucCRCHi = (preval & 0xff00) >> 8;
uint32 ucCRCLo = preval & 0x00ff;
int32 iIndex;
int32 i;
for (i = 0; i < len; ++i) {
iIndex = (ucCRCLo ^ data[offset + i]) & 0x00ff;
ucCRCLo = ucCRCHi ^ crc16_tab_h[iIndex];
ucCRCHi = crc16_tab_l[iIndex];
}
return (((ucCRCHi & 0x00ff) << 8) | (ucCRCLo & 0x00ff)) & 0xffff;
}
直接计算的方法
uint16 calcCrc16(uint8 *data, int32 offset, int32 len, uint32 preval)
{
uint16 crc= preval;
int32 i, j;
for (j=0; j < len; j++)
{
crc ^= (uint8)data[offset + j];
for ( i=0; i<8; i++)
{
if(crc & 0x0001)
{
crc >>= 1;
crc ^= 0xa001;
}
else
{
crc >>= 1;
}
}
}
return crc;
}
CRCModelBus
直接计算
static uint16_t UpdateCRC16(uint16_t crcin,uint8_t data)
{
uint32_t crc = crcin;
uint32_t ins =(uint32_t) (data | 0x100);
do
{
crc <<= 1;
ins <<= 1;
if((ins&0x100)==0x100)
{
++crc;
}
if ((crc & 0x10000) == 0x10000)
{
crc^=0x1021;
}
}
while (!((ins & 0x10000) == 0x10000));
return (uint16_t)crc;
}
uint16_t CRCXMODEM(uint8 *data, int32 len)
{
uint32_t num = 0;
uint16_t crc = 0;
uint32_t i = 0;
for(i=0; i
crc = UpdateCRC16(crc, data[i]);
}
crc = UpdateCRC16(crc, 0);
crc = UpdateCRC16(crc, 0);
return crc;//crc.ToString("X2");
}
查表的方法
const unsigned short crc16_XMODEM_table[]= {0x0000,0x1021,0x2042,0x3063,0x4084,0x50A5,0x60C6,0x70E7,0x8108,0x9129,0xA14A,0xB16B,0xC18C,0xD1AD,0xE1CE,0xF1EF,
0x1231,0x0210,0x3273,0x2252,0x52B5,0x4294,0x72F7,0x62D6,0x9339,0x8318,0xB37B,0xA35A,0xD3BD,0xC39C,0xF3FF,0xE3DE,
0x2462,0x3443,0x0420,0x1401,0x64E6,0x74C7,0x44A4,0x5485,0xA56A,0xB54B,0x8528,0x9509,0xE5EE,0xF5CF,0xC5AC,0xD58D,
0x3653,0x2672,0x1611,0x0630,0x76D7,0x66F6,0x5695,0x46B4,0xB75B,0xA77A,0x9719,0x8738,0xF7DF,0xE7FE,0xD79D,0xC7BC,
0x48C4,0x58E5,0x6886,0x78A7,0x0840,0x1861,0x2802,0x3823,0xC9CC,0xD9ED,0xE98E,0xF9AF,0x8948,0x9969,0xA90A,0xB92B,
0x5AF5,0x4AD4,0x7AB7,0x6A96,0x1A71,0x0A50,0x3A33,0x2A12,0xDBFD,0xCBDC,0xFBBF,0xEB9E,0x9B79,0x8B58,0xBB3B,0xAB1A,
0x6CA6,0x7C87,0x4CE4,0x5CC5,0x2C22,0x3C03,0x0C60,0x1C41,0xEDAE,0xFD8F,0xCDEC,0xDDCD,0xAD2A,0xBD0B,0x8D68,0x9D49,
0x7E97,0x6EB6,0x5ED5,0x4EF4,0x3E13,0x2E32,0x1E51,0x0E70,0xFF9F,0xEFBE,0xDFDD,0xCFFC,0xBF1B,0xAF3A,0x9F59,0x8F78,
0x9188,0x81A9,0xB1CA,0xA1EB,0xD10C,0xC12D,0xF14E,0xE16F,0x1080,0x00A1,0x30C2,0x20E3,0x5004,0x4025,0x7046,0x6067,
0x83B9,0x9398,0xA3FB,0xB3DA,0xC33D,0xD31C,0xE37F,0xF35E,0x02B1,0x1290,0x22F3,0x32D2,0x4235,0x5214,0x6277,0x7256,
0xB5EA,0xA5CB,0x95A8,0x8589,0xF56E,0xE54F,0xD52C,0xC50D,0x34E2,0x24C3,0x14A0,0x0481,0x7466,0x6447,0x5424,0x4405,
0xA7DB,0xB7FA,0x8799,0x97B8,0xE75F,0xF77E,0xC71D,0xD73C,0x26D3,0x36F2,0x0691,0x16B0,0x6657,0x7676,0x4615,0x5634,
0xD94C,0xC96D,0xF90E,0xE92F,0x99C8,0x89E9,0xB98A,0xA9AB,0x5844,0x4865,0x7806,0x6827,0x18C0,0x08E1,0x3882,0x28A3,
0xCB7D,0xDB5C,0xEB3F,0xFB1E,0x8BF9,0x9BD8,0xABBB,0xBB9A,0x4A75,0x5A54,0x6A37,0x7A16,0x0AF1,0x1AD0,0x2AB3,0x3A92,
0xFD2E,0xED0F,0xDD6C,0xCD4D,0xBDAA,0xAD8B,0x9DE8,0x8DC9,0x7C26,0x6C07,0x5C64,0x4C45,0x3CA2,0x2C83,0x1CE0,0x0CC1,
0xEF1F,0xFF3E,0xCF5D,0xDF7C,0xAF9B,0xBFBA,0x8FD9,0x9FF8,0x6E17,0x7E36,0x4E55,0x5E74,0x2E93,0x3EB2,0x0ED1,0x1EF0
};
unsigned short CRC16_XMODEM(unsigned char *puchMsg, unsigned int usDataLen)
{
unsigned short CrcTemp = 0x0, index;
{
for (index = 0; index < usDataLen; index++)
{
CrcTemp = ((CrcTemp << 8) & 0xff00) ^ crc16_XMODEM_table[((CrcTemp >> 8) & 0xff) ^ *(puchMsg++)];
}
}
return CrcTemp;
}
测试代码
uint8_t crc16_f_data[]= {
0x5A ,0x00 ,0x85 ,0x00 ,0x09 ,0x04 ,0x00 ,0x3C ,0x43 ,0x53 ,0x3E ,0x00 ,0x00 ,0x00 ,0x00 ,0xA0 ,0xD1 ,0x19 ,0x00 ,0x04,
0x00 ,0x00 ,0x00 ,0xC0 ,0x03 ,0x20 ,0x00 ,0xD3 ,0xF8 ,0xB0 ,0x6B ,0x72 ,0xEA ,0x97 ,0x4A ,0xE6 ,0x68 ,0x35 ,0xF3 ,0x6E,
0xB0 ,0x92 ,0xE6 ,0x6B ,0x40 ,0xEF ,0x51 ,0xCE ,0xAF ,0x7D ,0x21 ,0x64 ,0x11 ,0xB7 ,0xC2 ,0xEE ,0x13 ,0x9A ,0xEA ,0x60,
0x59 ,0x02 ,0x00 ,0x00 ,0x01 ,0x00 ,0x00 ,0x6C ,0x67 ,0x00 ,0x00 ,0x04 ,0x00 ,0x20 ,0x00 ,0x9F ,0x12 ,0xF8 ,0x39 ,0xBA,
0x8E ,0x68 ,0x05 ,0x81 ,0xEE ,0x4B ,0x64 ,0x81 ,0xE4 ,0xAE ,0x28 ,0x8A ,0x2E ,0xA6 ,0x41 ,0xDD ,0x89 ,0x88 ,0x90 ,0x1B,
0x04 ,0xDF ,0xA7 ,0x6A ,0x02 ,0x1C ,0xF0 ,0x00 ,0x30 ,0x00 ,0x00 ,0x60 ,0x5A ,0x02 ,0x00 ,0x2A ,0xAD ,0x00 ,0x00 ,0x04,
0x00 ,0x20 ,0x00 ,0xF4 ,0xFD ,0x78 ,0xE7 ,0x37 ,0xA8 ,0xD0 ,0x34 ,0x21 ,0x2D ,0xBE ,0x52 ,0xA5
};
//7B 5D
uint8_t crc16_f1_data[]= {0x5A ,0x00 ,0x0F ,0x00 ,0x09 ,0x02 ,0x01 ,0x02 ,0x00 ,0x1E ,0x02 ,0x02 ,0x00 ,0x78 ,0x03,
0x02 ,0x00 ,0x8A
};
test_crc16_value = calcCrc16(crc16_f_data,0,sizeof(crc16_f_data),0xffff);
printf("hello--:0x%xn",test_crc16_value);//result:0x4DF9
test_crc16_value = CRCXMODEM(crc16_f_data,sizeof(crc16_f_data));
printf("hello--:0x%xn",test_crc16_value);//result:0xB598
test_crc16_value = calcCrc16(crc16_f1_data,0,sizeof(crc16_f1_data),0xffff);
printf("hello--:0x%xn",test_crc16_value);//result:0x7B5D
test_crc16_value = CRCModelBus(crc16_f1_data,sizeof(crc16_f1_data));
printf("hello--:0x%xn",test_crc16_value);//result:0x7B5D
