#include <stdio.h>
unsigned char tab[]={
0x0 ,0x91 ,0xe3 ,0x72 ,0x7 ,0x96 ,0xe4 ,0x75 ,0xe ,0x9f ,0xed ,0x7c ,0x9 ,0x98 ,0xea ,0x7b ,0x1c ,0x8d ,0xff ,0x6e ,0x1b ,0x8a ,0xf8 ,0x69 ,0x12 ,0x83 ,0xf1 ,0x60 ,0x15 ,0x84 ,0xf6 ,0x67 ,0x38 ,0xa9 ,0xdb ,0x4a ,0x3f ,0xae ,0xdc ,0x4d ,0x36 ,0xa7 ,0xd5 ,0x44 ,0x31 ,0xa0 ,0xd2 ,0x43 ,0x24 ,0xb5 ,0xc7 ,0x56 ,0x23 ,0xb2 ,0xc0 ,0x51 ,0x2a ,0xbb ,0xc9 ,0x58 ,0x2d ,0xbc ,0xce ,0x5f ,0x70 ,0xe1 ,0x93 ,0x2 ,0x77 ,0xe6 ,0x94 ,0x5 ,0x7e ,0xef ,0x9d ,0xc ,0x79 ,0xe8 ,0x9a ,0xb ,0x6c ,0xfd ,0x8f ,0x1e ,0x6b ,0xfa ,0x88 ,0x19 ,0x62 ,0xf3 ,0x81 ,0x10 ,0x65 ,0xf4 ,0x86 ,0x17 ,0x48 ,0xd9 ,0xab ,0x3a ,0x4f ,0xde ,0xac ,0x3d ,0x46 ,0xd7 ,0xa5 ,0x34 ,0x41 ,0xd0 ,0xa2 ,0x33 ,0x54 ,0xc5 ,0xb7 ,0x26 ,0x53 ,0xc2 ,0xb0 ,0x21 ,0x5a ,0xcb ,0xb9 ,0x28 ,0x5d ,0xcc ,0xbe ,0x2f ,0xe0 ,0x71 ,0x3 ,0x92 ,0xe7 ,0x76 ,0x4 ,0x95 ,0xee ,0x7f ,0xd ,0x9c ,0xe9 ,0x78 ,0xa ,0x9b ,0xfc ,0x6d ,0x1f ,0x8e ,0xfb ,0x6a ,0x18 ,0x89 ,0xf2 ,0x63 ,0x11 ,0x80 ,0xf5 ,0x64 ,0x16 ,0x87 ,0xd8 ,0x49 ,0x3b ,0xaa ,0xdf ,0x4e ,0x3c ,0xad ,0xd6 ,0x47 ,0x35 ,0xa4 ,0xd1 ,0x40 ,0x32 ,0xa3 ,0xc4 ,0x55 ,0x27 ,0xb6 ,0xc3 ,0x52 ,0x20 ,0xb1 ,0xca ,0x5b ,0x29 ,0xb8 ,0xcd ,0x5c ,0x2e ,0xbf ,0x90 ,0x1 ,0x73 ,0xe2 ,0x97 ,0x6 ,0x74 ,0xe5 ,0x9e ,0xf ,0x7d ,0xec ,0x99 ,0x8 ,0x7a ,0xeb ,0x8c ,0x1d ,0x6f ,0xfe ,0x8b ,0x1a ,0x68 ,0xf9 ,0x82 ,0x13 ,0x61 ,0xf0 ,0x85 ,0x14 ,0x66 ,0xf7 ,0xa8 ,0x39 ,0x4b ,0xda ,0xaf ,0x3e ,0x4c ,0xdd ,0xa6 ,0x37 ,0x45 ,0xd4 ,0xa1 ,0x30 ,0x42 ,0xd3 ,0xb4 ,0x25 ,0x57 ,0xc6 ,0xb3 ,0x22 ,0x50 ,0xc1 ,0xba ,0x2b ,0x59 ,0xc8 ,0xbd ,0x2c ,0x5e ,0xcf };
unsigned char crc8(unsigned char *p,unsigned char len){
unsigned char crc=0xff;
unsigned char i;
for(i=0;i<len;i++) crc=tab[crc^*p++];
return crc;
}
int main(void){
unsigned char ret;
unsigned char buf[]={0x28,0x6D,0x00,0x85,0x00,0x00,0x00,0xCF};
ret=crc8(buf,7);
printf("%x \n",ret);
} |