/*
 * Copyright (c) 2019 - 2021 Stefan Strobel <stefan.strobel@shimatta.net>
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/.
 */

/**
 * @file    shellmatta_crc.h
 * @brief   cyclic redundancy check functions of shellmatta
 * @author  Simon Fischer <fischer.simon.1991@gmail.com>
 */

#ifndef _SHELLMATTA_CRC_H_
#define _SHELLMATTA_CRC_H_

#include <stdint.h>

#define CRC32_POLYNOM           0x04c11db7u     /**< crc-32 ethernet 802.3                          */
#define CRC16_XMODEM_POLYNOM    0x1021u         /**< crc16 xmodem                                   */
#define BITS_PER_BYTE           ((uint8_t)8)    /**< amount of bits per byte; to avoid magic number */

uint32_t crc32Calc(const char* data, uint32_t size);
uint16_t crc16Calc(const char* data, uint32_t size);

#endif /* _SHELLMATTA_CRC_H_ */