CRC.rar_CRC CCITT_checksum_crc 16_crc 16 ccitt_x16 x12 x5 1

共13个文件

pdb：2个

ncb：1个

idb：1个

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crc_ccitt

checksum

crc_16

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The 16-bit CRC checksum. The algorithm used is CRC-CCITT. The CRC calcula- tion includes all bytes of the frame. The data bytes have to be calculated as a word. At first you have to shift in the high byte of the data word. This is the opposite way you transmit the data word. The 16-bit generator polynomial ‘x16 +x12 +x5 +1’ is used for the calculation.

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CRC.rar （13个子文件）

校验码

校验码.dsp 4KB

CRC.CPP 864B

校验码.dsw 537B

校验码.plg 1KB

Debug

校验码.ilk 172KB

校验码.pch 199KB

校验码.pdb 409KB

vc60.idb 33KB

vc60.pdb 44KB

CRC.obj 3KB

校验码.exe 168KB

校验码.ncb 41KB

校验码.opt 53KB

共 13 条

#include "stdio.h" unsigned int CalcFieldCRC(unsigned int* pDataArray, unsigned int numberOfWords); void main() { unsigned int pDataArray[4] = { 0x1001,0x2003,0x0101,0x0000}; unsigned int numberOfWords =sizeof(pDataArray)/sizeof(pDataArray[1]); unsigned int CRC1 = CalcFieldCRC(pDataArray, numberOfWords); printf("%d %x \n",numberOfWords,CRC1); } unsigned int CalcFieldCRC(unsigned int* pDataArray, unsigned int numberOfWords) { unsigned int shifter, c; unsigned int carry; unsigned int CRC = 0; while(numberOfWords--) { shifter = 0x8000; c = *pDataArray++; do { carry = CRC & 0x8000; CRC <<= 1; if(c & shifter) CRC++; if(carry) CRC ^= 0x1021; shifter >>= 1; } while(shifter); } return CRC; }