kopia lustrzana https://github.com/micropython/micropython
99 wiersze
4.2 KiB
C
99 wiersze
4.2 KiB
C
//*****************************************************************************
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//
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// crc.h
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//
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// Defines and Macros for CRC module.
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//
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// Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
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//
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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
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// 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
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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//*****************************************************************************
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#ifndef __DRIVERLIB_CRC_H__
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#define __DRIVERLIB_CRC_H__
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//*****************************************************************************
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//
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// If building with a C++ compiler, make all of the definitions in this header
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// have a C binding.
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//
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//*****************************************************************************
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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//*****************************************************************************
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//
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// The following defines are used in the ui32Config argument of the
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// ECConfig function.
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//
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//*****************************************************************************
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#define CRC_CFG_INIT_SEED 0x00000000 // Initialize with seed
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#define CRC_CFG_INIT_0 0x00004000 // Initialize to all '0s'
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#define CRC_CFG_INIT_1 0x00006000 // Initialize to all '1s'
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#define CRC_CFG_SIZE_8BIT 0x00001000 // Input Data Size
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#define CRC_CFG_SIZE_32BIT 0x00000000 // Input Data Size
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#define CRC_CFG_RESINV 0x00000200 // Result Inverse Enable
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#define CRC_CFG_OBR 0x00000100 // Output Reverse Enable
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#define CRC_CFG_IBR 0x00000080 // Bit reverse enable
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#define CRC_CFG_ENDIAN_SBHW 0x00000000 // Swap byte in half-word
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#define CRC_CFG_ENDIAN_SHW 0x00000010 // Swap half-word
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#define CRC_CFG_TYPE_P8005 0x00000000 // Polynomial 0x8005
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#define CRC_CFG_TYPE_P1021 0x00000001 // Polynomial 0x1021
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#define CRC_CFG_TYPE_P4C11DB7 0x00000002 // Polynomial 0x4C11DB7
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#define CRC_CFG_TYPE_P1EDC6F41 0x00000003 // Polynomial 0x1EDC6F41
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#define CRC_CFG_TYPE_TCPCHKSUM 0x00000008 // TCP checksum
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//*****************************************************************************
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//
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// Function prototypes.
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//
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//*****************************************************************************
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extern void CRCConfigSet(uint32_t ui32Base, uint32_t ui32CRCConfig);
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extern uint32_t CRCDataProcess(uint32_t ui32Base, void *puiDataIn,
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uint32_t ui32DataLength, uint32_t ui32Config);
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extern void CRCDataWrite(uint32_t ui32Base, uint32_t ui32Data);
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extern uint32_t CRCResultRead(uint32_t ui32Base);
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extern void CRCSeedSet(uint32_t ui32Base, uint32_t ui32Seed);
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//*****************************************************************************
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//
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// Mark the end of the C bindings section for C++ compilers.
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//
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//*****************************************************************************
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#ifdef __cplusplus
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}
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#endif
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#endif // __DRIVERLIB_CRC_H__
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