Zoltan Hudak / CRC16_CCITT

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

CRC16_CCITT.h@0:253105d48c3c, 2017-09-02 (annotated)

Committer:
hudakz
Date:
Sat Sep 02 08:26:22 2017 +0000
Revision:
0:253105d48c3c
Child:
1:6ecc3a64bf7b
Implementation of CRC16-CCITT using polynomial 0x1021 = x^16 + x^12 + x^5 + 1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hudakz 0:253105d48c3c 1 /*
hudakz 0:253105d48c3c 2 * This is a fork of the CRC16 library COPYRIGHT(c) Emilie Laverge
hudakz 0:253105d48c3c 3 * published at [https://developer.mbed.org/users/EmLa/code/CRC16/]
hudakz 0:253105d48c3c 4 *
hudakz 0:253105d48c3c 5 * Modified by Zoltan Hudak to implement CRC16-CCITT
hudakz 0:253105d48c3c 6 * using the polynomial 0x1021: X^16 + X^15 + X^2 + 1.
hudakz 0:253105d48c3c 7 * Initial CRC register = 0x0000
hudakz 0:253105d48c3c 8 */
hudakz 0:253105d48c3c 9
hudakz 0:253105d48c3c 10 #ifndef CRC16_CCITT_H
hudakz 0:253105d48c3c 11 #define CRC16_CCITT_H
hudakz 0:253105d48c3c 12
hudakz 0:253105d48c3c 13 class CRC16_CCITT
hudakz 0:253105d48c3c 14 {
hudakz 0:253105d48c3c 15 private:
hudakz 0:253105d48c3c 16 static const unsigned int SHIFTER;
hudakz 0:253105d48c3c 17 static const unsigned short TABLE[];
hudakz 0:253105d48c3c 18 public:
hudakz 0:253105d48c3c 19 CRC16_CCITT(void) { };
hudakz 0:253105d48c3c 20 ~CRC16_CCITT(void){ };
hudakz 0:253105d48c3c 21 unsigned short calc(char input[], int length);
hudakz 0:253105d48c3c 22 };
hudakz 0:253105d48c3c 23 #endif // CRC16_CCITT_H