text: //*****************************************************************************
  //
  // crc.h - Defines and Macros for CRC module.
  //
  // Copyright (c) 2012-2014 Texas Instruments Incorporated.  All rights reserved.
  // Software License Agreement
  //
  //   Redistribution and use in source and binary forms, with or without
  //   modification, are permitted provided that the following conditions
  //   are met:
  //
  //   Redistributions of source code must retain the above copyright
  //   notice, this list of conditions and the following disclaimer.
  //
  //   Redistributions in binary form must reproduce the above copyright
  //   notice, this list of conditions and the following disclaimer in the
  //   documentation and/or other materials provided with the
  //   distribution.
  //
  //   Neither the name of Texas Instruments Incorporated nor the names of
  //   its contributors may be used to endorse or promote products derived
  //   from this software without specific prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  //
  // This is part of revision 2.1.0.12573 of the Tiva Peripheral Driver Library.
  //
  //*****************************************************************************
  
  #ifndef __DRIVERLIB_CRC_H__
  #define __DRIVERLIB_CRC_H__
  
  //*****************************************************************************
  //
  // If building with a C++ compiler, make all of the definitions in this header
  // have a C binding.
  //
  //*****************************************************************************
  #ifdef __cplusplus
  extern "C"
  {
  #endif
  
  //*****************************************************************************
  //
  // The following defines are used in the ui32Config argument of the
  // ECConfig function.
  //
  //*****************************************************************************
  #define CRC_CFG_INIT_SEED       0x00000000  // Initialize with seed
  #define CRC_CFG_INIT_0          0x00004000  // Initialize to all '0s'
  #define CRC_CFG_INIT_1          0x00006000  // Initialize to all '1s'
  #define CRC_CFG_SIZE_8BIT       0x00001000  // Input Data Size
  #define CRC_CFG_SIZE_32BIT      0x00000000  // Input Data Size
  #define CRC_CFG_RESINV          0x00000200  // Result Inverse Enable
  #define CRC_CFG_OBR             0x00000100  // Output Reverse Enable
  #define CRC_CFG_IBR             0x00000080  // Bit reverse enable
  #define CRC_CFG_ENDIAN_SBHW     0x00000000  // Swap byte in half-word
  #define CRC_CFG_ENDIAN_SHW      0x00000010  // Swap half-word
  #define CRC_CFG_TYPE_P8005      0x00000000  // Polynomial 0x8005
  #define CRC_CFG_TYPE_P1021      0x00000001  // Polynomial 0x1021
  #define CRC_CFG_TYPE_P4C11DB7   0x00000002  // Polynomial 0x4C11DB7
  #define CRC_CFG_TYPE_P1EDC6F41  0x00000003  // Polynomial 0x1EDC6F41
  #define CRC_CFG_TYPE_TCPCHKSUM  0x00000008  // TCP checksum
  
  //*****************************************************************************
  //
  // Function prototypes.
  //
  //*****************************************************************************
  #if 0
  extern void ECClockGatingReqest(uint32_t ui32Base, uint32_t ui32ECIP,
                                  bool bGate);
  #endif
  extern void CRCConfigSet(uint32_t ui32Base, uint32_t ui32CRCConfig);
  extern uint32_t CRCDataProcess(uint32_t ui32Base, uint32_t *pui32DataIn,
                                 uint32_t ui32DataLength, bool bPPResult);
  extern void CRCDataWrite(uint32_t ui32Base, uint32_t ui32Data);
  extern uint32_t CRCResultRead(uint32_t ui32Base, bool bPPResult);
  extern void CRCSeedSet(uint32_t ui32Base, uint32_t ui32Seed);
  
  //*****************************************************************************
  //
  // Mark the end of the C bindings section for C++ compilers.
  //
  //*****************************************************************************
  #ifdef __cplusplus
  }
  #endif
  
  #endif // __DRIVERLIB_CRC_H__
  