crc.h

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/* Copyright 2017 Wirepas Ltd. All Rights Reserved.
 *
 * See file LICENSE.txt for full license details.
 *
 */
 
#ifndef CRC_H
#define CRC_H
 
#include <stdint.h>
 
/* Select only one of the alternative implementations below: */
 
#define CRC_CCITT_FAST_LUT
 
//#define CRC_CCITT_LEGACY
 
typedef union
{
    struct
    {
        uint8_t lsb;
        uint8_t msb;
    };
    uint16_t crc;
} crc_t;
 
#define Crc_initValue() 0xffff
 
uint16_t Crc_addByte(uint16_t crc, uint8_t byte);
 
uint16_t Crc_fromBuffer(const uint8_t * buf, uint32_t len);
 
uint16_t Crc_fromBuffer32(const uint32_t * buf, uint32_t len);
 
#endif