TPG CA-202A - Page 87

The following example of using C language to create a sample program for CRC
checksum algorithm
Example: C language sample program
unsigned char *data; // Message pointer
unsigned char length; // Message length
unsigned int crc_chk(unsigned char *data,unsigned char length)
{
int i;
unsigned int reg_crc=0xffff;
while(length--)
{
reg_crc^=*data++;
for(i=0;i<8;i++)
if(reg_crc&0x01)
reg_crc=(reg_crc>>1)^0xa001;
else
reg_crc=reg_crc>>1;
}
}
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