/*
* For a byte array whose accumulated crc value is stored in *crc, computes
* resultant crc obtained by appending m to the byte array
*/
void crc8( unsigned char *crc, unsigned char m )
{
if ( !made_table ) {
init_crc8();
}
*crc = crc8_table[(*crc) ^ m];
*crc &= 0xFF;
}
uint8_t dprot_master_init_protocol (fn_put_char put_function, fn_get_char_to get_function)
{
// initialize the crc table
init_crc8( );
master_last_parity = 0;
// initialize the slip protocol
return slip_init (put_function, NULL, get_function, &master_channel);
}
unsigned char compute_crc8(unsigned char *p,unsigned char length)
{
unsigned char crc8;
unsigned char i;
unsigned char offset;
if (!made_table)
init_crc8();
crc8 = 0;
for(i = 0; i < length; i++)
{
offset = crc8 ^ *(p + i);
crc8 = crc8_table[offset];
}
return crc8 ^ 0x55;
}