rt-thread/bsp/hk32/libraries/HK32F0xx_StdPeriph_Driver/inc/hk32f0xx_crc.h

/**
  ******************************************************************************
  * @file    hk32f0xx_crc.h 
  * @version V1.0.1
  * @date    2019-08-15
  ***************************************************************************** 
  */

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __HK32F0XX_CRC_H
#define __HK32F0XX_CRC_H

#ifdef __cplusplus
 extern "C" {
#endif

/*!< Includes ----------------------------------------------------------------*/
#include "hk32f0xx.h"

/** @addtogroup HK32F0xx_StdPeriph_Driver
  * @{
  */

/** @addtogroup CRC
  * @{
  */

/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/

/** @defgroup CRC_ReverseInputData
  * @{
  */
#define CRC_ReverseInputData_No             ((uint32_t)0x00000000) /*!< No reverse operation of Input Data */
#define CRC_ReverseInputData_8bits          CRC_CR_REV_IN_0        /*!< Reverse operation of Input Data on 8 bits */
#define CRC_ReverseInputData_16bits         CRC_CR_REV_IN_1        /*!< Reverse operation of Input Data on 16 bits */
#define CRC_ReverseInputData_32bits         CRC_CR_REV_IN          /*!< Reverse operation of Input Data on 32 bits */

#define IS_CRC_REVERSE_INPUT_DATA(DATA) (((DATA) == CRC_ReverseInputData_No)     || \
                                         ((DATA) == CRC_ReverseInputData_8bits)  || \
                                         ((DATA) == CRC_ReverseInputData_16bits) || \
                                         ((DATA) == CRC_ReverseInputData_32bits))

/**
  * @}
  */

/** @defgroup CRC_PolynomialSize
  * @brief    Only applicable for HK32F042 and HK32F072 devices 
  * @{
  */
#define CRC_PolSize_7                       CRC_CR_POLSIZE        /*!< 7-bit polynomial for CRC calculation */
#define CRC_PolSize_8                       CRC_CR_POLSIZE_1      /*!< 8-bit polynomial for CRC calculation */
#define CRC_PolSize_16                      CRC_CR_POLSIZE_0      /*!< 16-bit polynomial for CRC calculation */
#define CRC_PolSize_32                      ((uint32_t)0x00000000)/*!< 32-bit polynomial for CRC calculation */

#define IS_CRC_POL_SIZE(SIZE) (((SIZE) == CRC_PolSize_7)  || \
                               ((SIZE) == CRC_PolSize_8)  || \
                               ((SIZE) == CRC_PolSize_16) || \
                               ((SIZE) == CRC_PolSize_32))

/**
  * @}
  */

/* Exported macro ------------------------------------------------------------*/
/* Exported functions ------------------------------------------------------- */
/* Configuration of the CRC computation unit **********************************/
void CRC_DeInit(void);
void CRC_ResetDR(void);
void CRC_ReverseInputDataSelect(uint32_t CRC_ReverseInputData);
void CRC_ReverseOutputDataCmd(FunctionalState NewState);
void CRC_SetInitRegister(uint32_t CRC_InitValue); 

/* CRC computation ************************************************************/
uint32_t CRC_CalcCRC(uint32_t CRC_Data);
uint32_t CRC_CalcBlockCRC(uint32_t pBuffer[], uint32_t BufferLength);
uint32_t CRC_GetCRC(void);

/* Independent register (IDR) access (write/read) *****************************/
void CRC_SetIDRegister(uint8_t CRC_IDValue);
uint8_t CRC_GetIDRegister(void);

#ifdef __cplusplus
}
#endif

#endif /* __HK32F0XX_CRC_H */