this defines are values for the calculation of CRC with 16 bits

Macros
#define	CRC16_POLYNOMIAL   0x1021
#define	FIRSTCALLCRC16   0xFFFF
#define	CRC16NBITS   8
#define	CRC16MSB   0x8000
#define	CRC16_8LEFT   8

Detailed Description

Macro Definition Documentation

CRC16_8LEFT

#define CRC16_8LEFT   8

Number of shift bits on crc calculation

CRC16_POLYNOMIAL

#define CRC16_POLYNOMIAL   0x1021

Polynomial of CRC16

CRC16MSB

#define CRC16MSB   0x8000

Most significant bit of 2 bytes

CRC16NBITS

#define CRC16NBITS   8

Number of bits of a byte

FIRSTCALLCRC16

#define FIRSTCALLCRC16   0xFFFF

Value of CRC if is first call