mirror of
https://github.com/DarkFlippers/unleashed-firmware
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75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
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/******************************************************************************
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* \attention
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*
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* <h2><center>© COPYRIGHT 2020 STMicroelectronics</center></h2>
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*
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* Licensed under ST MYLIBERTY SOFTWARE LICENSE AGREEMENT (the "License");
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* You may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* www.st.com/myliberty
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied,
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* AND SPECIFICALLY DISCLAIMING THE IMPLIED WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/*
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* PROJECT: ST25R391x firmware
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* Revision:
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* LANGUAGE: ISO C99
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*/
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/*! \file rfal_crc.h
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*
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* \author Ulrich Herrmann
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*
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* \brief CRC calculation module
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*
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*/
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/*!
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*
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*/
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#ifndef RFAL_CRC_H_
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#define RFAL_CRC_H_
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/*
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******************************************************************************
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* INCLUDES
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******************************************************************************
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*/
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#include "platform.h"
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/*
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******************************************************************************
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* GLOBAL FUNCTION PROTOTYPES
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******************************************************************************
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*/
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/*!
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*****************************************************************************
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* \brief Calculate CRC according to CCITT standard.
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*
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* This function takes \a length bytes from \a buf and calculates the CRC
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* for this data. The result is returned.
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* \note This implementation calculates the CRC with LSB first, i.e. all
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* bytes are "read" from right to left.
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*
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* \param[in] preloadValue : Initial value of CRC calculation.
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* \param[in] buf : buffer to calculate the CRC for.
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* \param[in] length : size of the buffer.
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*
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* \return 16 bit long crc value.
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*
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*****************************************************************************
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*/
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extern uint16_t rfalCrcCalculateCcitt(uint16_t preloadValue, const uint8_t* buf, uint16_t length);
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#endif /* RFAL_CRC_H_ */
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