113 lines
4.0 KiB
C
113 lines
4.0 KiB
C
/**************************************************************************//**
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* @file crc.h
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* @version V1.00
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* $Revision: 2 $
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* $Date: 15/12/01 9:57a $
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* @brief NUC472/NUC442 series CRC driver header file
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*
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* @note
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* Copyright (C) 2015 Nuvoton Technology Corp. All rights reserved.
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*****************************************************************************/
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#ifndef __CRC_H__
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#define __CRC_H__
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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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/** @addtogroup NUC472_442_Device_Driver NUC472/NUC442 Device Driver
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@{
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*/
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/** @addtogroup NUC472_442_CRC_Driver CRC Driver
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@{
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*/
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/** @addtogroup NUC472_442_CRC_EXPORTED_CONSTANTS CRC Exported Constants
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@{
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*/
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/*---------------------------------------------------------------------------------------------------------*/
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/* CRC Polynomial Mode Constant Definitions */
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/*---------------------------------------------------------------------------------------------------------*/
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#define CRC_CCITT 0x00000000UL /*!<CRC Polynomial Mode - CCITT */
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#define CRC_8 0x40000000UL /*!<CRC Polynomial Mode - CRC8 */
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#define CRC_16 0x80000000UL /*!<CRC Polynomial Mode - CRC16 */
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#define CRC_32 0xC0000000UL /*!<CRC Polynomial Mode - CRC32 */
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/*---------------------------------------------------------------------------------------------------------*/
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/* Checksum, Write data Constant Definitions */
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/*---------------------------------------------------------------------------------------------------------*/
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#define CRC_CHECKSUM_COM 0x08000000UL /*!<CRC Checksum Complement */
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#define CRC_CHECKSUM_RVS 0x02000000UL /*!<CRC Checksum Reverse */
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#define CRC_WDATA_COM 0x04000000UL /*!<CRC Write Data Complement */
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#define CRC_WDATA_RVS 0x01000000UL /*!<CRC Write Data Reverse */
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/*---------------------------------------------------------------------------------------------------------*/
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/* CPU Write Data Length Constant Definitions */
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/*---------------------------------------------------------------------------------------------------------*/
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#define CRC_CPU_WDATA_8 0x00000000UL /*!<CRC CPU Write Data length is 8-bit */
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#define CRC_CPU_WDATA_16 0x10000000UL /*!<CRC CPU Write Data length is 16-bit */
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#define CRC_CPU_WDATA_32 0x20000000UL /*!<CRC CPU Write Data length is 32-bit */
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/*@}*/ /* end of group NUC472_442_CRC_EXPORTED_CONSTANTS */
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/** @addtogroup NUC472_442_CRC_EXPORTED_FUNCTIONS CRC Exported Functions
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@{
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*/
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/**
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* @brief Set CRC Seed Value
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*
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* @param[in] u32Seed Seed value
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*
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* @return None
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*
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* @details This macro is used to set CRC seed value.
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*
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* @note User must to perform CRC_RST(CRC_CTL[1] CRC Engine Reset) to reload the new seed value
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* to CRC controller.
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*/
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#define CRC_SET_SEED(u32Seed) { CRC->SEED = (u32Seed); CRC->CTL |= CRC_CTL_CRCRST_Msk; }
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/**
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* @brief Get CRC Seed Value
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*
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* @param None
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*
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* @return CRC seed value
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*
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* @details This macro gets the current CRC seed value.
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*/
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#define CRC_GET_SEED() (CRC->SEED)
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/**
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* @brief CRC Write Data
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*
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* @param[in] u32Data Write data
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*
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* @return None
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*
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* @details User can write data directly to CRC Write Data Register(CRC_DAT) by this macro to perform CRC operation.
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*/
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#define CRC_WRITE_DATA(u32Data) (CRC->DAT = (u32Data))
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void CRC_Open(uint32_t u32Mode, uint32_t u32Attribute, uint32_t u32Seed, uint32_t u32DataLen);
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uint32_t CRC_GetChecksum(void);
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/*@}*/ /* end of group NUC472_442_CRC_EXPORTED_FUNCTIONS */
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/*@}*/ /* end of group NUC472_442_CRC_Driver */
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/*@}*/ /* end of group NUC472_442_Device_Driver */
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#ifdef __cplusplus
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}
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#endif
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#endif //__CRC_H__
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/*** (C) COPYRIGHT 2015 Nuvoton Technology Corp. ***/
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