crc16.h File Reference

#include <stdint.h>

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Macros
#define	ZERO_BIT_CRC   (0x1020) /* state of the CRC16 calculation after running a '0' */
#define	ONE_BIT_CRC   (0x0001) /* state of the CRC16 calculation after running a '1' */
#define	CRC_NO_PRELOAD   (0x0000) /* don't preload it, start with 0! */
#define	CCITT_POLY   (0x1021)

Functions
uint16_t	crc16_ccitt (uint16_t preload, uint8_t *dataPtr, uint16_t numBytes)
uint16_t	crc16Bits_ccitt (uint16_t preload, uint8_t *dataPtr, uint16_t numBytes, uint16_t numBits)

Detailed Description

Interface to the Cyclic Redundancy Check module

Author

Ivar in 't Veen, Aaron Parks

Macro Definition Documentation

CCITT_POLY

#define CCITT_POLY   (0x1021)

CRC_NO_PRELOAD

#define CRC_NO_PRELOAD   (0x0000) /* don't preload it, start with 0! */

ONE_BIT_CRC

#define ONE_BIT_CRC   (0x0001) /* state of the CRC16 calculation after running a '1' */

ZERO_BIT_CRC

#define ZERO_BIT_CRC   (0x1020) /* state of the CRC16 calculation after running a '0' */

Function Documentation

crc16_ccitt()

uint16_t crc16_ccitt	(	uint16_t	preload,
		uint8_t *	dataPtr,
		uint16_t	numBytes
	)

crc16Bits_ccitt()

uint16_t crc16Bits_ccitt	(	uint16_t	preload,
		uint8_t *	dataPtr,
		uint16_t	numBytes,
		uint16_t	numBits
	)