/**
  ******************************************************************************
  * @file    stm32l4xx_hal_crc.h
  * @author  MCD Application Team
  * @brief   Header file of CRC HAL module.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef STM32L4xx_HAL_CRC_H
#define STM32L4xx_HAL_CRC_H

#ifdef __cplusplus
extern "C" {
#endif

/* Includes ------------------------------------------------------------------*/
#include "stm32l4xx_hal_def.h"

/** @addtogroup STM32L4xx_HAL_Driver
  * @{
  */

/** @addtogroup CRC
  * @{
  */

/* Exported types ------------------------------------------------------------*/
/** @defgroup CRC_Exported_Types CRC Exported Types
  * @{
  */

/**
  * @brief  CRC HAL State Structure definition
  */
typedef enum
{
  HAL_CRC_STATE_RESET     = 0x00U,  /*!< CRC not yet initialized or disabled */
  HAL_CRC_STATE_READY     = 0x01U,  /*!< CRC initialized and ready for use   */
  HAL_CRC_STATE_BUSY      = 0x02U,  /*!< CRC internal process is ongoing     */
  HAL_CRC_STATE_TIMEOUT   = 0x03U,  /*!< CRC timeout state                   */
  HAL_CRC_STATE_ERROR     = 0x04U   /*!< CRC error state                     */
} HAL_CRC_StateTypeDef;

/**
  * @brief CRC Init Structure definition
  */
typedef struct
{
  uint8_t DefaultPolynomialUse;       /*!< This parameter is a value of @ref CRC_Default_Polynomial and indicates if default polynomial is used.
                                            If set to DEFAULT_POLYNOMIAL_ENABLE, resort to default
                                            X^32 + X^26 + X^23 + X^22 + X^16 + X^12 + X^11 + X^10 +X^8 + X^7 + X^5 + X^4 + X^2+ X +1.
                                            In that case, there is no need to set GeneratingPolynomial field.
                                            If otherwise set to DEFAULT_POLYNOMIAL_DISABLE, GeneratingPolynomial and CRCLength fields must be set. */

  uint8_t DefaultInitValueUse;        /*!< This parameter is a value of @ref CRC_Default_InitValue_Use and indicates if default init value is used.
                                           If set to DEFAULT_INIT_VALUE_ENABLE, resort to default
                                           0xFFFFFFFF value. In that case, there is no need to set InitValue field.
                                           If otherwise set to DEFAULT_INIT_VALUE_DISABLE,  InitValue field must be set. */

  uint32_t GeneratingPolynomial;      /*!< Set CRC generating polynomial as a 7, 8, 16 or 32-bit long value for a polynomial degree
                                           respectively equal to 7, 8, 16 or 32. This field is written in normal representation,
                                           e.g., for a polynomial of degree 7, X^7 + X^6 + X^5 + X^2 + 1 is written 0x65.
                                           No need to specify it if DefaultPolynomialUse is set to DEFAULT_POLYNOMIAL_ENABLE.   */

  uint32_t CRCLength;                 /*!< This parameter is a value of @ref CRC_Polynomial_Sizes and indicates CRC length.
                                           Value can be either one of
                                           @arg @ref CRC_POLYLENGTH_32B                  (32-bit CRC),
                                           @arg @ref CRC_POLYLENGTH_16B                  (16-bit CRC),
                                           @arg @ref CRC_POLYLENGTH_8B                   (8-bit CRC),
                                           @arg @ref CRC_POLYLENGTH_7B                   (7-bit CRC). */

  uint32_t InitValue;                 /*!< Init value to initiate CRC computation. No need to specify it if DefaultInitValueUse
                                           is set to DEFAULT_INIT_VALUE_ENABLE.   */

  uint32_t InputDataInversionMode;    /*!< This parameter is a value of @ref CRCEx_Input_Data_Inversion and specifies input data inversion mode.
                                           Can be either one of the following values
                                           @arg @ref CRC_INPUTDATA_INVERSION_NONE       no input data inversion
                                           @arg @ref CRC_INPUTDATA_INVERSION_BYTE       byte-wise inversion, 0x1A2B3C4D becomes 0x58D43CB2
                                           @arg @ref CRC_INPUTDATA_INVERSION_HALFWORD   halfword-wise inversion, 0x1A2B3C4D becomes 0xD458B23C
                                           @arg @ref CRC_INPUTDATA_INVERSION_WORD       word-wise inversion, 0x1A2B3C4D becomes 0xB23CD458 */

  uint32_t OutputDataInversionMode;   /*!< This parameter is a value of @ref CRCEx_Output_Data_Inversion and specifies output data (i.e. CRC) inversion mode.
                                            Can be either
                                            @arg @ref CRC_OUTPUTDATA_INVERSION_DISABLE   no CRC inversion,
                                            @arg @ref CRC_OUTPUTDATA_INVERSION_ENABLE    CRC 0x11223344 is converted into 0x22CC4488 */
} CRC_InitTypeDef;

/**
  * @brief  CRC Handle Structure definition
  */
typedef struct
{
  CRC_TypeDef                 *Instance;   /*!< Register base address        */

  CRC_InitTypeDef             Init;        /*!< CRC configuration parameters */

  HAL_LockTypeDef             Lock;        /*!< CRC Locking object           */

  __IO HAL_CRC_StateTypeDef   State;       /*!< CRC communication state      */

  uint32_t InputDataFormat;                /*!< This parameter is a value of @ref CRC_Input_Buffer_Format and specifies input data format.
                                            Can be either
                                            @arg @ref CRC_INPUTDATA_FORMAT_BYTES       input data is a stream of bytes (8-bit data)
                                            @arg @ref CRC_INPUTDATA_FORMAT_HALFWORDS   input data is a stream of half-words (16-bit data)
                                            @arg @ref CRC_INPUTDATA_FORMAT_WORDS       input data is a stream of words (32-bit data)

                                           Note that constant CRC_INPUT_FORMAT_UNDEFINED is defined but an initialization error
                                           must occur if InputBufferFormat is not one of the three values listed above  */
} CRC_HandleTypeDef;
/**
  * @}
  */

/* Exported constants --------------------------------------------------------*/
/** @defgroup CRC_Exported_Constants CRC Exported Constants
  * @{
  */

/** @defgroup CRC_Default_Polynomial_Value    Default CRC generating polynomial
  * @{
  */
#define DEFAULT_CRC32_POLY      0x04C11DB7U  /*!<  X^32 + X^26 + X^23 + X^22 + X^16 + X^12 + X^11 + X^10 +X^8 + X^7 + X^5 + X^4 + X^2+ X +1 */
/**
  * @}
  */

/** @defgroup CRC_Default_InitValue    Default CRC computation initialization value
  * @{
  */
#define DEFAULT_CRC_INITVALUE   0xFFFFFFFFU  /*!< Initial CRC default value */
/**
  * @}
  */

/** @defgroup CRC_Default_Polynomial    Indicates whether or not default polynomial is used
  * @{
  */
#define DEFAULT_POLYNOMIAL_ENABLE       ((uint8_t)0x00U)  /*!< Enable default generating polynomial 0x04C11DB7  */
#define DEFAULT_POLYNOMIAL_DISABLE      ((uint8_t)0x01U)  /*!< Disable default generating polynomial 0x04C11DB7 */
/**
  * @}
  */

/** @defgroup CRC_Default_InitValue_Use    Indicates whether or not default init value is used
  * @{
  */
#define DEFAULT_INIT_VALUE_ENABLE      ((uint8_t)0x00U) /*!< Enable initial CRC default value  */
#define DEFAULT_INIT_VALUE_DISABLE     ((uint8_t)0x01U) /*!< Disable initial CRC default value */
/**
  * @}
  */

/** @defgroup CRC_Polynomial_Sizes Polynomial sizes to configure the peripheral
  * @{
  */
#define CRC_POLYLENGTH_32B                  0x00000000U        /*!< Resort to a 32-bit long generating polynomial */
#define CRC_POLYLENGTH_16B                  CRC_CR_POLYSIZE_0  /*!< Resort to a 16-bit long generating polynomial */
#define CRC_POLYLENGTH_8B                   CRC_CR_POLYSIZE_1  /*!< Resort to a 8-bit long generating polynomial  */
#define CRC_POLYLENGTH_7B                   CRC_CR_POLYSIZE    /*!< Resort to a 7-bit long generating polynomial  */
/**
  * @}
  */

/** @defgroup CRC_Polynomial_Size_Definitions CRC polynomial possible sizes actual definitions
  * @{
  */
#define HAL_CRC_LENGTH_32B     32U          /*!< 32-bit long CRC */
#define HAL_CRC_LENGTH_16B     16U          /*!< 16-bit long CRC */
#define HAL_CRC_LENGTH_8B       8U          /*!< 8-bit long CRC  */
#define HAL_CRC_LENGTH_7B       7U          /*!< 7-bit long CRC  */
/**
  * @}
  */

/** @defgroup CRC_Input_Buffer_Format Input Buffer Format
  * @{
  */
/* WARNING: CRC_INPUT_FORMAT_UNDEFINED is created for reference purposes but
 * an error is triggered in HAL_CRC_Init() if InputDataFormat field is set
 * to CRC_INPUT_FORMAT_UNDEFINED: the format MUST be defined by the user for
 * the CRC APIs to provide a correct result */
#define CRC_INPUTDATA_FORMAT_UNDEFINED             0x00000000U  /*!< Undefined input data format    */
#define CRC_INPUTDATA_FORMAT_BYTES                 0x00000001U  /*!< Input data in byte format      */
#define CRC_INPUTDATA_FORMAT_HALFWORDS             0x00000002U  /*!< Input data in half-word format */
#define CRC_INPUTDATA_FORMAT_WORDS                 0x00000003U  /*!< Input data in word format      */
/**
  * @}
  */

/** @defgroup CRC_Aliases CRC API aliases
  * @{
  */
#define HAL_CRC_Input_Data_Reverse   HAL_CRCEx_Input_Data_Reverse    /*!< Aliased to HAL_CRCEx_Input_Data_Reverse for inter STM32 series compatibility  */
#define HAL_CRC_Output_Data_Reverse  HAL_CRCEx_Output_Data_Reverse   /*!< Aliased to HAL_CRCEx_Output_Data_Reverse for inter STM32 series compatibility */
/**
  * @}
  */

/**
  * @}
  */

/* Exported macros -----------------------------------------------------------*/
/** @defgroup CRC_Exported_Macros CRC Exported Macros
  * @{
  */

/** @brief Reset CRC handle state.
  * @param  __HANDLE__ CRC handle.
  * @retval None
  */
#define __HAL_CRC_RESET_HANDLE_STATE(__HANDLE__) ((__HANDLE__)->State = HAL_CRC_STATE_RESET)

/**
  * @brief  Reset CRC Data Register.
  * @param  __HANDLE__ CRC handle
  * @retval None
  */
#define __HAL_CRC_DR_RESET(__HANDLE__) ((__HANDLE__)->Instance->CR |= CRC_CR_RESET)

/**
  * @brief  Set CRC INIT non-default value
  * @param  __HANDLE__ CRC handle
  * @param  __INIT__ 32-bit initial value
  * @retval None
  */
#define __HAL_CRC_INITIALCRCVALUE_CONFIG(__HANDLE__, __INIT__) ((__HANDLE__)->Instance->INIT = (__INIT__))

/**
  * @brief Store data in the Independent Data (ID) register.
  * @param __HANDLE__ CRC handle
  * @param __VALUE__  Value to be stored in the ID register
  * @note  Refer to the Reference Manual to get the authorized __VALUE__ length in bits
  * @retval None
  */
#define __HAL_CRC_SET_IDR(__HANDLE__, __VALUE__) (WRITE_REG((__HANDLE__)->Instance->IDR, (__VALUE__)))

/**
  * @brief Return the data stored in the Independent Data (ID) register.
  * @param __HANDLE__ CRC handle
  * @note  Refer to the Reference Manual to get the authorized __VALUE__ length in bits
  * @retval Value of the ID register
  */
#define __HAL_CRC_GET_IDR(__HANDLE__) (((__HANDLE__)->Instance->IDR) & CRC_IDR_IDR)
/**
  * @}
  */


/* Private macros --------------------------------------------------------*/
/** @defgroup  CRC_Private_Macros CRC Private Macros
  * @{
  */

#define IS_DEFAULT_POLYNOMIAL(DEFAULT) (((DEFAULT) == DEFAULT_POLYNOMIAL_ENABLE) || \
                                        ((DEFAULT) == DEFAULT_POLYNOMIAL_DISABLE))


#define IS_DEFAULT_INIT_VALUE(VALUE)  (((VALUE) == DEFAULT_INIT_VALUE_ENABLE) || \
                                       ((VALUE) == DEFAULT_INIT_VALUE_DISABLE))

#define IS_CRC_POL_LENGTH(LENGTH)     (((LENGTH) == CRC_POLYLENGTH_32B) || \
                                       ((LENGTH) == CRC_POLYLENGTH_16B) || \
                                       ((LENGTH) == CRC_POLYLENGTH_8B)  || \
                                       ((LENGTH) == CRC_POLYLENGTH_7B))

#define IS_CRC_INPUTDATA_FORMAT(FORMAT)           (((FORMAT) == CRC_INPUTDATA_FORMAT_BYTES)     || \
                                                   ((FORMAT) == CRC_INPUTDATA_FORMAT_HALFWORDS) || \
                                                   ((FORMAT) == CRC_INPUTDATA_FORMAT_WORDS))

/**
  * @}
  */

/* Include CRC HAL Extended module */
#include "stm32l4xx_hal_crc_ex.h"

/* Exported functions --------------------------------------------------------*/
/** @defgroup CRC_Exported_Functions CRC Exported Functions
  * @{
  */

/* Initialization and de-initialization functions  ****************************/
/** @defgroup CRC_Exported_Functions_Group1 Initialization and de-initialization functions
  * @{
  */
HAL_StatusTypeDef HAL_CRC_Init(CRC_HandleTypeDef *hcrc);
HAL_StatusTypeDef HAL_CRC_DeInit(CRC_HandleTypeDef *hcrc);
void HAL_CRC_MspInit(CRC_HandleTypeDef *hcrc);
void HAL_CRC_MspDeInit(CRC_HandleTypeDef *hcrc);
/**
  * @}
  */

/* Peripheral Control functions ***********************************************/
/** @defgroup CRC_Exported_Functions_Group2 Peripheral Control functions
  * @{
  */
uint32_t HAL_CRC_Accumulate(CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength);
uint32_t HAL_CRC_Calculate(CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength);
/**
  * @}
  */

/* Peripheral State and Error functions ***************************************/
/** @defgroup CRC_Exported_Functions_Group3 Peripheral State functions
  * @{
  */
HAL_CRC_StateTypeDef HAL_CRC_GetState(CRC_HandleTypeDef *hcrc);
/**
  * @}
  */

/**
  * @}
  */

/**
  * @}
  */

/**
  * @}
  */

#ifdef __cplusplus
}
#endif

#endif /* STM32L4xx_HAL_CRC_H */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
