juno_ccitt.c

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#include "juno/crc/crc.h"
#include <stdint.h>
#include <stdio.h>
#include "ccitt.h"
 
uint16_t Juno_CrcCcittUpdate(uint16_t iCrc, const void *pcData, size_t zDataSize)
{
    register uint16_t crc = iCrc;
    register const uint8_t *cp = pcData;
    register size_t cnt = zDataSize;
 
    while(cnt--) {
    crc=((crc<<8)&M2_16)^ccitt_crctab[((crc>>8)&0xff)^*cp++];
    }
 
    return(crc);
}