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Julien Chevalley
2023-12-11 14:43:05 +01:00
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Drivers/STM32F7xx_HAL_Driver/Inc/stm32f7xx_ll_crc.h Normal file
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/**
******************************************************************************
* @file stm32f7xx_ll_crc.h
* @author MCD Application Team
* @brief Header file of CRC LL module.
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef STM32F7xx_LL_CRC_H
#define STM32F7xx_LL_CRC_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "stm32f7xx.h"
/** @addtogroup STM32F7xx_LL_Driver
* @{
*/
#if defined(CRC)
/** @defgroup CRC_LL CRC
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/
/** @defgroup CRC_LL_Exported_Constants CRC Exported Constants
* @{
*/
/** @defgroup CRC_LL_EC_POLYLENGTH Polynomial length
* @{
*/
#define LL_CRC_POLYLENGTH_32B 0x00000000U /*!< 32 bits Polynomial size */
#define LL_CRC_POLYLENGTH_16B CRC_CR_POLYSIZE_0 /*!< 16 bits Polynomial size */
#define LL_CRC_POLYLENGTH_8B CRC_CR_POLYSIZE_1 /*!< 8 bits Polynomial size */
#define LL_CRC_POLYLENGTH_7B (CRC_CR_POLYSIZE_1 | CRC_CR_POLYSIZE_0) /*!< 7 bits Polynomial size */
/**
* @}
*/
/** @defgroup CRC_LL_EC_INDATA_REVERSE Input Data Reverse
* @{
*/
#define LL_CRC_INDATA_REVERSE_NONE 0x00000000U /*!< Input Data bit order not affected */
#define LL_CRC_INDATA_REVERSE_BYTE CRC_CR_REV_IN_0 /*!< Input Data bit reversal done by byte */
#define LL_CRC_INDATA_REVERSE_HALFWORD CRC_CR_REV_IN_1 /*!< Input Data bit reversal done by half-word */
#define LL_CRC_INDATA_REVERSE_WORD (CRC_CR_REV_IN_1 | CRC_CR_REV_IN_0) /*!< Input Data bit reversal done by word */
/**
* @}
*/
/** @defgroup CRC_LL_EC_OUTDATA_REVERSE Output Data Reverse
* @{
*/
#define LL_CRC_OUTDATA_REVERSE_NONE 0x00000000U /*!< Output Data bit order not affected */
#define LL_CRC_OUTDATA_REVERSE_BIT CRC_CR_REV_OUT /*!< Output Data bit reversal done by bit */
/**
* @}
*/
/** @defgroup CRC_LL_EC_Default_Polynomial_Value Default CRC generating polynomial value
* @brief Normal representation of this polynomial value is
* 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 .
* @{
*/
#define LL_CRC_DEFAULT_CRC32_POLY 0x04C11DB7U /*!< Default CRC generating polynomial value */
/**
* @}
*/
/** @defgroup CRC_LL_EC_Default_InitValue Default CRC computation initialization value
* @{
*/
#define LL_CRC_DEFAULT_CRC_INITVALUE 0xFFFFFFFFU /*!< Default CRC computation initialization value */
/**
* @}
*/
/**
* @}
*/
/* Exported macro ------------------------------------------------------------*/
/** @defgroup CRC_LL_Exported_Macros CRC Exported Macros
* @{
*/
/** @defgroup CRC_LL_EM_WRITE_READ Common Write and read registers Macros
* @{
*/
/**
* @brief Write a value in CRC register
* @param __INSTANCE__ CRC Instance
* @param __REG__ Register to be written
* @param __VALUE__ Value to be written in the register
* @retval None
*/
#define LL_CRC_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, __VALUE__)
/**
* @brief Read a value in CRC register
* @param __INSTANCE__ CRC Instance
* @param __REG__ Register to be read
* @retval Register value
*/
#define LL_CRC_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__)
/**
* @}
*/
/**
* @}
*/
/* Exported functions --------------------------------------------------------*/
/** @defgroup CRC_LL_Exported_Functions CRC Exported Functions
* @{
*/
/** @defgroup CRC_LL_EF_Configuration CRC Configuration functions
* @{
*/
/**
* @brief Reset the CRC calculation unit.
* @note If Programmable Initial CRC value feature
* is available, also set the Data Register to the value stored in the
* CRC_INIT register, otherwise, reset Data Register to its default value.
* @rmtoll CR RESET LL_CRC_ResetCRCCalculationUnit
* @param CRCx CRC Instance
* @retval None
*/
__STATIC_INLINE void LL_CRC_ResetCRCCalculationUnit(CRC_TypeDef *CRCx)
{
SET_BIT(CRCx->CR, CRC_CR_RESET);
}
/**
* @brief Configure size of the polynomial.
* @rmtoll CR POLYSIZE LL_CRC_SetPolynomialSize
* @param CRCx CRC Instance
* @param PolySize This parameter can be one of the following values:
* @arg @ref LL_CRC_POLYLENGTH_32B
* @arg @ref LL_CRC_POLYLENGTH_16B
* @arg @ref LL_CRC_POLYLENGTH_8B
* @arg @ref LL_CRC_POLYLENGTH_7B
* @retval None
*/
__STATIC_INLINE void LL_CRC_SetPolynomialSize(CRC_TypeDef *CRCx, uint32_t PolySize)
{
MODIFY_REG(CRCx->CR, CRC_CR_POLYSIZE, PolySize);
}
/**
* @brief Return size of the polynomial.
* @rmtoll CR POLYSIZE LL_CRC_GetPolynomialSize
* @param CRCx CRC Instance
* @retval Returned value can be one of the following values:
* @arg @ref LL_CRC_POLYLENGTH_32B
* @arg @ref LL_CRC_POLYLENGTH_16B
* @arg @ref LL_CRC_POLYLENGTH_8B
* @arg @ref LL_CRC_POLYLENGTH_7B
*/
__STATIC_INLINE uint32_t LL_CRC_GetPolynomialSize(CRC_TypeDef *CRCx)
{
return (uint32_t)(READ_BIT(CRCx->CR, CRC_CR_POLYSIZE));
}
/**
* @brief Configure the reversal of the bit order of the input data
* @rmtoll CR REV_IN LL_CRC_SetInputDataReverseMode
* @param CRCx CRC Instance
* @param ReverseMode This parameter can be one of the following values:
* @arg @ref LL_CRC_INDATA_REVERSE_NONE
* @arg @ref LL_CRC_INDATA_REVERSE_BYTE
* @arg @ref LL_CRC_INDATA_REVERSE_HALFWORD
* @arg @ref LL_CRC_INDATA_REVERSE_WORD
* @retval None
*/
__STATIC_INLINE void LL_CRC_SetInputDataReverseMode(CRC_TypeDef *CRCx, uint32_t ReverseMode)
{
MODIFY_REG(CRCx->CR, CRC_CR_REV_IN, ReverseMode);
}
/**
* @brief Return type of reversal for input data bit order
* @rmtoll CR REV_IN LL_CRC_GetInputDataReverseMode
* @param CRCx CRC Instance
* @retval Returned value can be one of the following values:
* @arg @ref LL_CRC_INDATA_REVERSE_NONE
* @arg @ref LL_CRC_INDATA_REVERSE_BYTE
* @arg @ref LL_CRC_INDATA_REVERSE_HALFWORD
* @arg @ref LL_CRC_INDATA_REVERSE_WORD
*/
__STATIC_INLINE uint32_t LL_CRC_GetInputDataReverseMode(CRC_TypeDef *CRCx)
{
return (uint32_t)(READ_BIT(CRCx->CR, CRC_CR_REV_IN));
}
/**
* @brief Configure the reversal of the bit order of the Output data
* @rmtoll CR REV_OUT LL_CRC_SetOutputDataReverseMode
* @param CRCx CRC Instance
* @param ReverseMode This parameter can be one of the following values:
* @arg @ref LL_CRC_OUTDATA_REVERSE_NONE
* @arg @ref LL_CRC_OUTDATA_REVERSE_BIT
* @retval None
*/
__STATIC_INLINE void LL_CRC_SetOutputDataReverseMode(CRC_TypeDef *CRCx, uint32_t ReverseMode)
{
MODIFY_REG(CRCx->CR, CRC_CR_REV_OUT, ReverseMode);
}
/**
* @brief Return type of reversal of the bit order of the Output data
* @rmtoll CR REV_OUT LL_CRC_GetOutputDataReverseMode
* @param CRCx CRC Instance
* @retval Returned value can be one of the following values:
* @arg @ref LL_CRC_OUTDATA_REVERSE_NONE
* @arg @ref LL_CRC_OUTDATA_REVERSE_BIT
*/
__STATIC_INLINE uint32_t LL_CRC_GetOutputDataReverseMode(CRC_TypeDef *CRCx)
{
return (uint32_t)(READ_BIT(CRCx->CR, CRC_CR_REV_OUT));
}
/**
* @brief Initialize the Programmable initial CRC value.
* @note If the CRC size is less than 32 bits, the least significant bits
* are used to write the correct value
* @note LL_CRC_DEFAULT_CRC_INITVALUE could be used as value for InitCrc parameter.
* @rmtoll INIT INIT LL_CRC_SetInitialData
* @param CRCx CRC Instance
* @param InitCrc Value to be programmed in Programmable initial CRC value register
* @retval None
*/
__STATIC_INLINE void LL_CRC_SetInitialData(CRC_TypeDef *CRCx, uint32_t InitCrc)
{
WRITE_REG(CRCx->INIT, InitCrc);
}
/**
* @brief Return current Initial CRC value.
* @note If the CRC size is less than 32 bits, the least significant bits
* are used to read the correct value
* @rmtoll INIT INIT LL_CRC_GetInitialData
* @param CRCx CRC Instance
* @retval Value programmed in Programmable initial CRC value register
*/
__STATIC_INLINE uint32_t LL_CRC_GetInitialData(CRC_TypeDef *CRCx)
{
return (uint32_t)(READ_REG(CRCx->INIT));
}
/**
* @brief Initialize the Programmable polynomial value
* (coefficients of the polynomial to be used for CRC calculation).
* @note LL_CRC_DEFAULT_CRC32_POLY could be used as value for PolynomCoef parameter.
* @note Please check Reference Manual and existing Errata Sheets,
* regarding possible limitations for Polynomial values usage.
* For example, for a polynomial of degree 7, X^7 + X^6 + X^5 + X^2 + 1 is written 0x65
* @rmtoll POL POL LL_CRC_SetPolynomialCoef
* @param CRCx CRC Instance
* @param PolynomCoef Value to be programmed in Programmable Polynomial value register
* @retval None
*/
__STATIC_INLINE void LL_CRC_SetPolynomialCoef(CRC_TypeDef *CRCx, uint32_t PolynomCoef)
{
WRITE_REG(CRCx->POL, PolynomCoef);
}
/**
* @brief Return current Programmable polynomial value
* @note Please check Reference Manual and existing Errata Sheets,
* regarding possible limitations for Polynomial values usage.
* For example, for a polynomial of degree 7, X^7 + X^6 + X^5 + X^2 + 1 is written 0x65
* @rmtoll POL POL LL_CRC_GetPolynomialCoef
* @param CRCx CRC Instance
* @retval Value programmed in Programmable Polynomial value register
*/
__STATIC_INLINE uint32_t LL_CRC_GetPolynomialCoef(CRC_TypeDef *CRCx)
{
return (uint32_t)(READ_REG(CRCx->POL));
}
/**
* @}
*/
/** @defgroup CRC_LL_EF_Data_Management Data_Management
* @{
*/
/**
* @brief Write given 32-bit data to the CRC calculator
* @rmtoll DR DR LL_CRC_FeedData32
* @param CRCx CRC Instance
* @param InData value to be provided to CRC calculator between between Min_Data=0 and Max_Data=0xFFFFFFFF
* @retval None
*/
__STATIC_INLINE void LL_CRC_FeedData32(CRC_TypeDef *CRCx, uint32_t InData)
{
WRITE_REG(CRCx->DR, InData);
}
/**
* @brief Write given 16-bit data to the CRC calculator
* @rmtoll DR DR LL_CRC_FeedData16
* @param CRCx CRC Instance
* @param InData 16 bit value to be provided to CRC calculator between between Min_Data=0 and Max_Data=0xFFFF
* @retval None
*/
__STATIC_INLINE void LL_CRC_FeedData16(CRC_TypeDef *CRCx, uint16_t InData)
{
__IO uint16_t *pReg;
pReg = (__IO uint16_t *)(__IO void *)(&CRCx->DR); /* Derogation MisraC2012 R.11.5 */
*pReg = InData;
}
/**
* @brief Write given 8-bit data to the CRC calculator
* @rmtoll DR DR LL_CRC_FeedData8
* @param CRCx CRC Instance
* @param InData 8 bit value to be provided to CRC calculator between between Min_Data=0 and Max_Data=0xFF
* @retval None
*/
__STATIC_INLINE void LL_CRC_FeedData8(CRC_TypeDef *CRCx, uint8_t InData)
{
*(uint8_t __IO *)(&CRCx->DR) = (uint8_t) InData;
}
/**
* @brief Return current CRC calculation result. 32 bits value is returned.
* @rmtoll DR DR LL_CRC_ReadData32
* @param CRCx CRC Instance
* @retval Current CRC calculation result as stored in CRC_DR register (32 bits).
*/
__STATIC_INLINE uint32_t LL_CRC_ReadData32(CRC_TypeDef *CRCx)
{
return (uint32_t)(READ_REG(CRCx->DR));
}
/**
* @brief Return current CRC calculation result. 16 bits value is returned.
* @note This function is expected to be used in a 16 bits CRC polynomial size context.
* @rmtoll DR DR LL_CRC_ReadData16
* @param CRCx CRC Instance
* @retval Current CRC calculation result as stored in CRC_DR register (16 bits).
*/
__STATIC_INLINE uint16_t LL_CRC_ReadData16(CRC_TypeDef *CRCx)
{
return (uint16_t)READ_REG(CRCx->DR);
}
/**
* @brief Return current CRC calculation result. 8 bits value is returned.
* @note This function is expected to be used in a 8 bits CRC polynomial size context.
* @rmtoll DR DR LL_CRC_ReadData8
* @param CRCx CRC Instance
* @retval Current CRC calculation result as stored in CRC_DR register (8 bits).
*/
__STATIC_INLINE uint8_t LL_CRC_ReadData8(CRC_TypeDef *CRCx)
{
return (uint8_t)READ_REG(CRCx->DR);
}
/**
* @brief Return current CRC calculation result. 7 bits value is returned.
* @note This function is expected to be used in a 7 bits CRC polynomial size context.
* @rmtoll DR DR LL_CRC_ReadData7
* @param CRCx CRC Instance
* @retval Current CRC calculation result as stored in CRC_DR register (7 bits).
*/
__STATIC_INLINE uint8_t LL_CRC_ReadData7(CRC_TypeDef *CRCx)
{
return (uint8_t)(READ_REG(CRCx->DR) & 0x7FU);
}
/**
* @brief Return data stored in the Independent Data(IDR) register.
* @note This register can be used as a temporary storage location for one byte.
* @rmtoll IDR IDR LL_CRC_Read_IDR
* @param CRCx CRC Instance
* @retval Value stored in CRC_IDR register (General-purpose 8-bit data register).
*/
__STATIC_INLINE uint32_t LL_CRC_Read_IDR(CRC_TypeDef *CRCx)
{
return (uint32_t)(READ_REG(CRCx->IDR));
}
/**
* @brief Store data in the Independent Data(IDR) register.
* @note This register can be used as a temporary storage location for one byte.
* @rmtoll IDR IDR LL_CRC_Write_IDR
* @param CRCx CRC Instance
* @param InData value to be stored in CRC_IDR register (8-bit) between Min_Data=0 and Max_Data=0xFF
* @retval None
*/
__STATIC_INLINE void LL_CRC_Write_IDR(CRC_TypeDef *CRCx, uint32_t InData)
{
*((uint8_t __IO *)(&CRCx->IDR)) = (uint8_t) InData;
}
/**
* @}
*/
#if defined(USE_FULL_LL_DRIVER)
/** @defgroup CRC_LL_EF_Init Initialization and de-initialization functions
* @{
*/
ErrorStatus LL_CRC_DeInit(CRC_TypeDef *CRCx);
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/**
* @}
*/
/**
* @}
*/
#endif /* defined(CRC) */
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* STM32F7xx_LL_CRC_H */