Zoltan Hudak / CRC16_CCITT

Implementation of CRC16-CCITT using polynomial 0x1021 = x^16 + x^12 + x^5 + 1

CRC16_CCITT.h

Committer:
hudakz
Date:
2017-09-03
Revision:
1:6ecc3a64bf7b
Parent:
0:253105d48c3c

File content as of revision 1:6ecc3a64bf7b:

/*
 * This is a fork of the CRC16 library COPYRIGHT(c) Emilie Laverge
 * published at [https://developer.mbed.org/users/EmLa/code/CRC16/]
 *
 * Modified by Zoltan Hudak to implement CRC16-CCITT
 * using the polynomial 0x1021: X^16 + X^15 + X^2 + 1.
 * Default initial CRC value = 0x0000
 */

#ifndef CRC16_CCITT_H
#define CRC16_CCITT_H

class   CRC16_CCITT
{
private:
    static const unsigned int   SHIFTER;
    static const unsigned short TABLE[];
public:
    CRC16_CCITT(void){};
    ~CRC16_CCITT(void){};
    unsigned short calc(char input[], int length, unsigned short crc = 0x0000);
};

#endif // CRC16_CCITT_H