owner-nrf52sdk/nRF5_SDK_15.2.0/components/ant/ant_fs/crc.h

/**
 * This software is subject to the ANT+ Shared Source License
 * www.thisisant.com/swlicenses
 * Copyright (c) Garmin Canada Inc. 2012
 * All rights reserved.
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 *       contributors may be used to endorse or promote products
 *       derived from this software without specific prior
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/** @file
 * @brief The CRC-16 interface.
 * This file is based on implementation originally made in August 2012 by Garmin Canada Inc.
 * (former Dynastream Innovations Inc.)
 * @defgroup ant_fs_client_main ANT-FS client device simulator
 * @{
 * @ingroup ant_fs
 *
 * @brief The ANT-FS client device simulator.
 *
 */

#ifndef CRC_H__
#define CRC_H__

#include <stdint.h>

#ifdef __cplusplus
extern "C" {
#endif

/**@brief Function for calculating CRC-16 in blocks.
 *
 * Feed each consecutive data block into this function, along with the current value of current_crc
 * as returned by the previous call of this function. The first call of this function should pass
 * the initial value (usually 0) of the crc in current_crc.

 * @param[in] current_crc The current calculated CRC-16 value.
 * @param[in] p_data      The input data block for computation.
 * @param[in] size        The size of the input data block in bytes.
 *
 * @return The updated CRC-16 value, based on the input supplied.
 */
uint16_t crc_crc16_update(uint16_t current_crc, const volatile void * p_data, uint32_t size);


#ifdef __cplusplus
}
#endif

#endif // CRC_H__

/**
 *@}
 **/