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143 lines
4.3 KiB
C
143 lines
4.3 KiB
C
/* --COPYRIGHT--,BSD
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* Copyright (c) 2017, Texas Instruments Incorporated
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of Texas Instruments Incorporated nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* --/COPYRIGHT--*/
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#include <ti/devices/msp432p4xx/driverlib/crc32.h>
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#include <ti/devices/msp432p4xx/inc/msp.h>
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#include <ti/devices/msp432p4xx/driverlib/debug.h>
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void CRC32_setSeed(uint32_t seed, uint_fast8_t crcType)
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{
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ASSERT((CRC16_MODE == crcType) || (CRC32_MODE == crcType));
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if (CRC16_MODE == crcType)
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CRC32->INIRES16 = seed;
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else
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{
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CRC32->INIRES32_HI = ((seed & 0xFFFF0000) >> 16);
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CRC32->INIRES32_LO = (seed & 0xFFFF);
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}
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}
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void CRC32_set8BitData(uint8_t dataIn, uint_fast8_t crcType)
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{
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ASSERT((CRC16_MODE == crcType) || (CRC32_MODE == crcType));
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if (CRC16_MODE == crcType)
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HWREG8(&(CRC32->DI16)) = dataIn;
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else
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HWREG8(&(CRC32->DI32)) = dataIn;
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}
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void CRC32_set16BitData(uint16_t dataIn, uint_fast8_t crcType)
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{
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ASSERT((CRC16_MODE == crcType) || (CRC32_MODE == crcType));
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if (CRC16_MODE == crcType)
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CRC32->DI16 = dataIn;
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else
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CRC32->DI32 = dataIn;
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}
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void CRC32_set32BitData(uint32_t dataIn)
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{
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//CRC32->DI32 = dataIn & 0xFFFF;
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//CRC32->DI32 = (uint16_t) ((dataIn & 0xFFFF0000) >> 16);
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HWREG16(&(CRC32->DI32)) = dataIn & 0xFFFF;
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HWREG16(&(CRC32->DI32)) = (uint16_t)(
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(dataIn & 0xFFFF0000) >> 16);
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}
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void CRC32_set8BitDataReversed(uint8_t dataIn, uint_fast8_t crcType)
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{
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ASSERT((CRC16_MODE == crcType) || (CRC32_MODE == crcType));
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if (CRC16_MODE == crcType)
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HWREG8(&(CRC32->DIRB16)) = dataIn;
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else
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HWREG8(&(CRC32->DIRB32)) = dataIn;
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}
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void CRC32_set16BitDataReversed(uint16_t dataIn, uint_fast8_t crcType)
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{
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ASSERT((CRC16_MODE == crcType) || (CRC32_MODE == crcType));
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if (CRC16_MODE == crcType)
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CRC32->DIRB16 = dataIn;
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else
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CRC32->DIRB32 = dataIn;
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}
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void CRC32_set32BitDataReversed(uint32_t dataIn)
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{
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//CRC32->DIRB32 = dataIn & 0xFFFF;
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//CRC32->DIRB32 = (uint16_t) ((dataIn & 0xFFFF0000) >> 16);
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HWREG16(&(CRC32->DIRB32)) = dataIn & 0xFFFF;
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HWREG16(&(CRC32->DIRB32)) = (uint16_t)(
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(dataIn & 0xFFFF0000) >> 16);
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}
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uint32_t CRC32_getResult(uint_fast8_t crcType)
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{
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uint32_t result;
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ASSERT((CRC16_MODE == crcType) || (CRC32_MODE == crcType));
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if (CRC16_MODE == crcType)
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return CRC32->INIRES16;
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else
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{
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result = CRC32->INIRES32_HI;
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result = (result << 16);
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result |= (uint32_t) CRC32->INIRES32_LO;
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return (result);
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}
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}
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uint32_t CRC32_getResultReversed(uint_fast8_t crcType)
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{
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uint32_t result;
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ASSERT((CRC16_MODE == crcType) || (CRC32_MODE == crcType));
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if (CRC16_MODE == crcType)
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return CRC32->RESR16;
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else
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{
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result = CRC32->RESR32_HI;
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result = (result << 16);
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result |= (uint32_t) CRC32->RESR32_LO;
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return (result);
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}
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}
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