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targets/TARGET_Maxim/TARGET_MAX32625/mxc/crc.c
- Committer:
- amithy
- Date:
- 2017-11-09
- Revision:
- 178:c26431f84b0d
- Parent:
- 150:02e0a0aed4ec
File content as of revision 178:c26431f84b0d:
/** * @file crc.c * @brief This file contains the function implementations for the Cyclic * Redundency Check (CRC) peripheral module. */ /* **************************************************************************** * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Except as contained in this notice, the name of Maxim Integrated * Products, Inc. shall not be used except as stated in the Maxim Integrated * Products, Inc. Branding Policy. * * The mere transfer of this software does not imply any licenses * of trade secrets, proprietary technology, copyrights, patents, * trademarks, maskwork rights, or any other form of intellectual * property whatsoever. Maxim Integrated Products, Inc. retains all * ownership rights. * * $Date: 2016-08-02 13:45:09 -0500 (Tue, 02 Aug 2016) $ * $Revision: 23897 $ * *************************************************************************** */ /* **** Includes **** */ #include "crc.h" /** * @ingroup crc * @{ */ /* **** Definitions **** */ /* **** Globals **** */ /* **** Functions **** */ /* ************************************************************************* */ void CRC16_Init(uint8_t CCITT_TRUE, uint8_t lilEndian) { if(CCITT_TRUE) MXC_CRC->reseed |= MXC_F_CRC_RESEED_CCITT_MODE; else MXC_CRC->reseed &= ~MXC_F_CRC_RESEED_CCITT_MODE; if(lilEndian) MXC_CRC->reseed |= MXC_F_CRC_RESEED_REV_ENDIAN16; else MXC_CRC->reseed &= ~MXC_F_CRC_RESEED_REV_ENDIAN16; } /* ************************************************************************* */ void CRC32_Init(uint8_t lilEndian) { if(lilEndian) MXC_CRC->reseed |= MXC_F_CRC_RESEED_REV_ENDIAN32; else MXC_CRC->reseed &= ~MXC_F_CRC_RESEED_REV_ENDIAN32; } /* ************************************************************************* */ void CRC16_Reseed(uint16_t initData) { //set initial value MXC_CRC->seed16 = initData; //reseed the CRC16 generator MXC_CRC->reseed |= MXC_F_CRC_RESEED_CRC16; //wait for reseed to clear itself while(MXC_CRC->reseed & MXC_F_CRC_RESEED_CRC16); } /* ************************************************************************* */ void CRC32_Reseed(uint32_t initData) { //set initial value MXC_CRC->seed32 = initData; //reseed the CRC16 generator MXC_CRC->reseed |= MXC_F_CRC_RESEED_CRC32; //wait for reseed to clear itself while(MXC_CRC->reseed & MXC_F_CRC_RESEED_CRC32); } /**@} end of group crc */