text: /**
    ******************************************************************************
    * @file    stm32f4xx_hal_spi.h
    * @author  MCD Application Team
    * @version V1.3.1
    * @date    25-March-2015
    * @brief   Header file of SPI HAL module.
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
    *
    * Redistribution and use in source and binary forms, with or without modification,
    * are permitted provided that the following conditions are met:
    *   1. Redistributions of source code must retain the above copyright notice,
    *      this list of conditions and the following disclaimer.
    *   2. 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.
    *   3. Neither the name of STMicroelectronics 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 HOLDER 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.
    *
    ******************************************************************************
    */ 
  
  /* Define to prevent recursive inclusion -------------------------------------*/
  #ifndef __STM32F4xx_HAL_SPI_H
  #define __STM32F4xx_HAL_SPI_H
  
  #ifdef __cplusplus
   extern "C" {
  #endif
  
  /* Includes ------------------------------------------------------------------*/
  #include "stm32f4xx_hal_def.h"  
  
  /** @addtogroup STM32F4xx_HAL_Driver
    * @{
    */
  
  /** @addtogroup SPI
    * @{
    */
  
  /* Exported types ------------------------------------------------------------*/
  /** @defgroup SPI_Exported_Types SPI Exported Types
    * @{
    */
    
  /** 
    * @brief  SPI Configuration Structure definition  
    */
  typedef struct
  {
    uint32_t Mode;               /*!< Specifies the SPI operating mode.
                                      This parameter can be a value of @ref SPI_mode */
  
    uint32_t Direction;          /*!< Specifies the SPI Directional mode state.
                                      This parameter can be a value of @ref SPI_Direction_mode */
  
    uint32_t DataSize;           /*!< Specifies the SPI data size.
                                      This parameter can be a value of @ref SPI_data_size */
  
    uint32_t CLKPolarity;        /*!< Specifies the serial clock steady state.
                                      This parameter can be a value of @ref SPI_Clock_Polarity */
  
    uint32_t CLKPhase;           /*!< Specifies the clock active edge for the bit capture.
                                      This parameter can be a value of @ref SPI_Clock_Phase */
  
    uint32_t NSS;                /*!< Specifies whether the NSS signal is managed by
                                      hardware (NSS pin) or by software using the SSI bit.
                                      This parameter can be a value of @ref SPI_Slave_Select_management */
  
    uint32_t BaudRatePrescaler;  /*!< Specifies the Baud Rate prescaler value which will be
                                      used to configure the transmit and receive SCK clock.
                                      This parameter can be a value of @ref SPI_BaudRate_Prescaler
                                      @note The communication clock is derived from the master
                                      clock. The slave clock does not need to be set */
  
    uint32_t FirstBit;           /*!< Specifies whether data transfers start from MSB or LSB bit.
                                      This parameter can be a value of @ref SPI_MSB_LSB_transmission */
  
    uint32_t TIMode;             /*!< Specifies if the TI mode is enabled or not.
                                      This parameter can be a value of @ref SPI_TI_mode */
  
    uint32_t CRCCalculation;     /*!< Specifies if the CRC calculation is enabled or not.
                                      This parameter can be a value of @ref SPI_CRC_Calculation */
  
    uint32_t CRCPolynomial;      /*!< Specifies the polynomial used for the CRC calculation.
                                      This parameter must be a number between Min_Data = 0 and Max_Data = 65535 */
  
  }SPI_InitTypeDef;
  
  /**
    * @brief  HAL SPI State structure definition
    */
  typedef enum
  {
    HAL_SPI_STATE_RESET      = 0x00,  /*!< SPI not yet initialized or disabled                */
    HAL_SPI_STATE_READY      = 0x01,  /*!< SPI initialized and ready for use                  */
    HAL_SPI_STATE_BUSY       = 0x02,  /*!< SPI process is ongoing                             */
    HAL_SPI_STATE_BUSY_TX    = 0x12,  /*!< Data Transmission process is ongoing               */
    HAL_SPI_STATE_BUSY_RX    = 0x22,  /*!< Data Reception process is ongoing                  */
    HAL_SPI_STATE_BUSY_TX_RX = 0x32,  /*!< Data Transmission and Reception process is ongoing */
    HAL_SPI_STATE_ERROR      = 0x03   /*!< SPI error state                                    */
      
  }HAL_SPI_StateTypeDef;
  
  /** 
    * @brief  SPI handle Structure definition
    */
  typedef struct __SPI_HandleTypeDef
  {
    SPI_TypeDef                *Instance;    /* SPI registers base address */
  
    SPI_InitTypeDef            Init;         /* SPI communication parameters */
  
    uint8_t                    *pTxBuffPtr;  /* Pointer to SPI Tx transfer Buffer */
  
    uint16_t                   TxXferSize;   /* SPI Tx transfer size */
    
    uint16_t                   TxXferCount;  /* SPI Tx Transfer Counter */
  
    uint8_t                    *pRxBuffPtr;  /* Pointer to SPI Rx transfer Buffer */
  
    uint16_t                   RxXferSize;   /* SPI Rx transfer size */
  
    uint16_t                   RxXferCount;  /* SPI Rx Transfer Counter */
  
    DMA_HandleTypeDef          *hdmatx;      /* SPI Tx DMA handle parameters */
  
    DMA_HandleTypeDef          *hdmarx;      /* SPI Rx DMA handle parameters */
  
    void                       (*RxISR)(struct __SPI_HandleTypeDef * hspi); /* function pointer on Rx ISR */
  
    void                       (*TxISR)(struct __SPI_HandleTypeDef * hspi); /* function pointer on Tx ISR */
  
    HAL_LockTypeDef            Lock;         /* SPI locking object */
  
    __IO HAL_SPI_StateTypeDef  State;        /* SPI communication state */
  
    __IO uint32_t              ErrorCode;    /* SPI Error code */
  
  }SPI_HandleTypeDef;
  /**
    * @}
    */
  
  /* Exported constants --------------------------------------------------------*/
  /** @defgroup SPI_Exported_Constants SPI Exported Constants
    * @{
    */
  
  /** @defgroup SPI_Error_Code SPI Error Code
    * @brief    SPI Error Code 
    * @{
    */ 
  #define HAL_SPI_ERROR_NONE         ((uint32_t)0x00000000)   /*!< No error             */
  #define HAL_SPI_ERROR_MODF         ((uint32_t)0x00000001)   /*!< MODF error           */
  #define HAL_SPI_ERROR_CRC          ((uint32_t)0x00000002)   /*!< CRC error            */
  #define HAL_SPI_ERROR_OVR          ((uint32_t)0x00000004)   /*!< OVR error            */
  #define HAL_SPI_ERROR_FRE          ((uint32_t)0x00000008)   /*!< FRE error            */
  #define HAL_SPI_ERROR_DMA          ((uint32_t)0x00000010)   /*!< DMA transfer error   */
  #define HAL_SPI_ERROR_FLAG         ((uint32_t)0x00000010)   /*!< Flag: RXNE,TXE, BSY  */
  /**
    * @}
    */
  
  /** @defgroup SPI_mode SPI Mode
    * @{
    */
  #define SPI_MODE_SLAVE                  ((uint32_t)0x00000000)
  #define SPI_MODE_MASTER                 (SPI_CR1_MSTR | SPI_CR1_SSI)
  /**
    * @}
    */
  
  /** @defgroup SPI_Direction_mode SPI Direction Mode
    * @{
    */
  #define SPI_DIRECTION_2LINES             ((uint32_t)0x00000000)
  #define SPI_DIRECTION_2LINES_RXONLY      SPI_CR1_RXONLY
  #define SPI_DIRECTION_1LINE              SPI_CR1_BIDIMODE
  /**
    * @}
    */
  
  /** @defgroup SPI_data_size SPI Data Size
    * @{
    */
  #define SPI_DATASIZE_8BIT               ((uint32_t)0x00000000)
  #define SPI_DATASIZE_16BIT              SPI_CR1_DFF
  /**
    * @}
    */ 
  
  /** @defgroup SPI_Clock_Polarity SPI Clock Polarity 
    * @{
    */
  #define SPI_POLARITY_LOW                ((uint32_t)0x00000000)
  #define SPI_POLARITY_HIGH               SPI_CR1_CPOL
  /**
    * @}
    */
  
  /** @defgroup SPI_Clock_Phase SPI Clock Phase
    * @{
    */
  #define SPI_PHASE_1EDGE                 ((uint32_t)0x00000000)
  #define SPI_PHASE_2EDGE                 SPI_CR1_CPHA
  /**
    * @}
    */
  
  /** @defgroup SPI_Slave_Select_management SPI Slave Select Management
    * @{
    */
  #define SPI_NSS_SOFT                    SPI_CR1_SSM
  #define SPI_NSS_HARD_INPUT              ((uint32_t)0x00000000)
  #define SPI_NSS_HARD_OUTPUT             ((uint32_t)0x00040000)
  /**
    * @}
    */ 
  
  /** @defgroup SPI_BaudRate_Prescaler SPI BaudRate Prescaler
    * @{
    */
  #define SPI_BAUDRATEPRESCALER_2         ((uint32_t)0x00000000)
  #define SPI_BAUDRATEPRESCALER_4         ((uint32_t)0x00000008)
  #define SPI_BAUDRATEPRESCALER_8         ((uint32_t)0x00000010)
  #define SPI_BAUDRATEPRESCALER_16        ((uint32_t)0x00000018)
  #define SPI_BAUDRATEPRESCALER_32        ((uint32_t)0x00000020)
  #define SPI_BAUDRATEPRESCALER_64        ((uint32_t)0x00000028)
  #define SPI_BAUDRATEPRESCALER_128       ((uint32_t)0x00000030)
  #define SPI_BAUDRATEPRESCALER_256       ((uint32_t)0x00000038)
  /**
    * @}
    */ 
  
  /** @defgroup SPI_MSB_LSB_transmission SPI MSB LSB Transsmission 
    * @{
    */
  #define SPI_FIRSTBIT_MSB                ((uint32_t)0x00000000)
  #define SPI_FIRSTBIT_LSB                SPI_CR1_LSBFIRST
  /**
    * @}
    */
  
  /** @defgroup SPI_TI_mode SPI TI Mode
    * @{
    */
  #define SPI_TIMODE_DISABLE             ((uint32_t)0x00000000)
  #define SPI_TIMODE_ENABLE              SPI_CR2_FRF
  /**
    * @}
    */
  
  /** @defgroup SPI_CRC_Calculation SPI CRC Calculation
    * @{
    */
  #define SPI_CRCCALCULATION_DISABLE     ((uint32_t)0x00000000)
  #define SPI_CRCCALCULATION_ENABLE      SPI_CR1_CRCEN
  /**
    * @}
    */
  
  /** @defgroup SPI_Interrupt_definition SPI Interrupt Definition
    * @{
    */
  #define SPI_IT_TXE                      SPI_CR2_TXEIE
  #define SPI_IT_RXNE                     SPI_CR2_RXNEIE
  #define SPI_IT_ERR                      SPI_CR2_ERRIE
  /**
    * @}
    */
  
  /** @defgroup SPI_Flags_definition SPI Flags Definition 
    * @{
    */
  #define SPI_FLAG_RXNE                   SPI_SR_RXNE
  #define SPI_FLAG_TXE                    SPI_SR_TXE
  #define SPI_FLAG_CRCERR                 SPI_SR_CRCERR
  #define SPI_FLAG_MODF                   SPI_SR_MODF
  #define SPI_FLAG_OVR                    SPI_SR_OVR
  #define SPI_FLAG_BSY                    SPI_SR_BSY
  #define SPI_FLAG_FRE                    SPI_SR_FRE
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /* Exported macro ------------------------------------------------------------*/
  /** @defgroup SPI_Exported_Macros SPI Exported Macros
    * @{
    */
  /** @brief Reset SPI handle state
    * @param  __HANDLE__: specifies the SPI handle.
    *         This parameter can be SPI where x: 1, 2, or 3 to select the SPI peripheral.
    * @retval None
    */
  #define __HAL_SPI_RESET_HANDLE_STATE(__HANDLE__) ((__HANDLE__)->State = HAL_SPI_STATE_RESET)
  
  /** @brief  Enable or disable the specified SPI interrupts.
    * @param  __HANDLE__: specifies the SPI handle.
    *         This parameter can be SPI where x: 1, 2, or 3 to select the SPI peripheral.
    * @param  __INTERRUPT__: specifies the interrupt source to enable or disable.
    *         This parameter can be one of the following values:
    *            @arg SPI_IT_TXE: Tx buffer empty interrupt enable
    *            @arg SPI_IT_RXNE: RX buffer not empty interrupt enable
    *            @arg SPI_IT_ERR: Error interrupt enable
    * @retval None
    */
  #define __HAL_SPI_ENABLE_IT(__HANDLE__, __INTERRUPT__)   ((__HANDLE__)->Instance->CR2 |= (__INTERRUPT__))
  #define __HAL_SPI_DISABLE_IT(__HANDLE__, __INTERRUPT__)  ((__HANDLE__)->Instance->CR2 &= (~(__INTERRUPT__)))
  
  /** @brief  Check if the specified SPI interrupt source is enabled or disabled.
    * @param  __HANDLE__: specifies the SPI handle.
    *         This parameter can be SPI where x: 1, 2, or 3 to select the SPI peripheral.
    * @param  __INTERRUPT__: specifies the SPI interrupt source to check.
    *          This parameter can be one of the following values:
    *             @arg SPI_IT_TXE: Tx buffer empty interrupt enable
    *             @arg SPI_IT_RXNE: RX buffer not empty interrupt enable
    *             @arg SPI_IT_ERR: Error interrupt enable
    * @retval The new state of __IT__ (TRUE or FALSE).
    */
  #define __HAL_SPI_GET_IT_SOURCE(__HANDLE__, __INTERRUPT__) ((((__HANDLE__)->Instance->CR2 & (__INTERRUPT__)) == (__INTERRUPT__)) ? SET : RESET)
  
  /** @brief  Check whether the specified SPI flag is set or not.
    * @param  __HANDLE__: specifies the SPI handle.
    *         This parameter can be SPI where x: 1, 2, or 3 to select the SPI peripheral.
    * @param  __FLAG__: specifies the flag to check.
    *         This parameter can be one of the following values:
    *            @arg SPI_FLAG_RXNE: Receive buffer not empty flag
    *            @arg SPI_FLAG_TXE: Transmit buffer empty flag
    *            @arg SPI_FLAG_CRCERR: CRC error flag
    *            @arg SPI_FLAG_MODF: Mode fault flag
    *            @arg SPI_FLAG_OVR: Overrun flag
    *            @arg SPI_FLAG_BSY: Busy flag
    *            @arg SPI_FLAG_FRE: Frame format error flag  
    * @retval The new state of __FLAG__ (TRUE or FALSE).
    */
  #define __HAL_SPI_GET_FLAG(__HANDLE__, __FLAG__) ((((__HANDLE__)->Instance->SR) & (__FLAG__)) == (__FLAG__))
  
  /** @brief  Clear the SPI CRCERR pending flag.
    * @param  __HANDLE__: specifies the SPI handle.
    *         This parameter can be SPI where x: 1, 2, or 3 to select the SPI peripheral.
    * @retval None
    */
  #define __HAL_SPI_CLEAR_CRCERRFLAG(__HANDLE__) ((__HANDLE__)->Instance->SR = ~(SPI_FLAG_CRCERR))
  
  /** @brief  Clear the SPI MODF pending flag.
    * @param  __HANDLE__: specifies the SPI handle.
    *         This parameter can be SPI where x: 1, 2, or 3 to select the SPI peripheral. 
    * @retval None
    */
  #define __HAL_SPI_CLEAR_MODFFLAG(__HANDLE__)            \
    do{                                                   \
      __IO uint32_t tmpreg;                               \
      tmpreg = (__HANDLE__)->Instance->SR;                \
      (__HANDLE__)->Instance->CR1 &= (~SPI_CR1_SPE);      \
      UNUSED(tmpreg);                                     \
    } while(0) 
  
  /** @brief  Clear the SPI OVR pending flag.
    * @param  __HANDLE__: specifies the SPI handle.
    *         This parameter can be SPI where x: 1, 2, or 3 to select the SPI peripheral. 
    * @retval None
    */
  #define __HAL_SPI_CLEAR_OVRFLAG(__HANDLE__)     \
    do{                                           \
      __IO uint32_t tmpreg;                       \
      tmpreg = (__HANDLE__)->Instance->DR;        \
      tmpreg = (__HANDLE__)->Instance->SR;        \
      UNUSED(tmpreg);                             \
    } while(0) 
  
  /** @brief  Clear the SPI FRE pending flag.
    * @param  __HANDLE__: specifies the SPI handle.
    *         This parameter can be SPI where x: 1, 2, or 3 to select the SPI peripheral.
    * @retval None
    */                                           
  #define __HAL_SPI_CLEAR_FREFLAG(__HANDLE__)     \
    do{                                             \
    __IO uint32_t tmpreg;                         \
    tmpreg = (__HANDLE__)->Instance->SR;          \
    UNUSED(tmpreg);                               \
    }while(0) 
  
  /** @brief Enable SPI
    * @param __HANDLE__: specifies the SPI Handle.
    * @retval None
    */
  #define __HAL_SPI_ENABLE(__HANDLE__) ((__HANDLE__)->Instance->CR1 |=  SPI_CR1_SPE)
  
  /** @brief Disable SPI
    * @param __HANDLE__: specifies the SPI Handle.
    * @retval None
    */
  #define __HAL_SPI_DISABLE(__HANDLE__) ((__HANDLE__)->Instance->CR1 &=  ~SPI_CR1_SPE)
  /**
    * @}
    */
    
  /* Exported functions --------------------------------------------------------*/
  /** @addtogroup SPI_Exported_Functions
    * @{
    */
  
  /** @addtogroup SPI_Exported_Functions_Group1
    * @{
    */
  /* Initialization/de-initialization functions  **********************************/
  HAL_StatusTypeDef HAL_SPI_Init(SPI_HandleTypeDef *hspi);
  HAL_StatusTypeDef HAL_SPI_DeInit (SPI_HandleTypeDef *hspi);
  void HAL_SPI_MspInit(SPI_HandleTypeDef *hspi);
  void HAL_SPI_MspDeInit(SPI_HandleTypeDef *hspi);
  /**
    * @}
    */
  
  /** @addtogroup SPI_Exported_Functions_Group2
    * @{
    */
  /* I/O operation functions  *****************************************************/
  HAL_StatusTypeDef HAL_SPI_Transmit(SPI_HandleTypeDef *hspi, uint8_t *pData, uint16_t Size, uint32_t Timeout);
  HAL_StatusTypeDef HAL_SPI_Receive(SPI_HandleTypeDef *hspi, uint8_t *pData, uint16_t Size, uint32_t Timeout);
  HAL_StatusTypeDef HAL_SPI_TransmitReceive(SPI_HandleTypeDef *hspi, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size, uint32_t Timeout);
  HAL_StatusTypeDef HAL_SPI_Transmit_IT(SPI_HandleTypeDef *hspi, uint8_t *pData, uint16_t Size);
  HAL_StatusTypeDef HAL_SPI_Receive_IT(SPI_HandleTypeDef *hspi, uint8_t *pData, uint16_t Size);
  HAL_StatusTypeDef HAL_SPI_TransmitReceive_IT(SPI_HandleTypeDef *hspi, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size);
  HAL_StatusTypeDef HAL_SPI_Transmit_DMA(SPI_HandleTypeDef *hspi, uint8_t *pData, uint16_t Size);
  HAL_StatusTypeDef HAL_SPI_Receive_DMA(SPI_HandleTypeDef *hspi, uint8_t *pData, uint16_t Size);
  HAL_StatusTypeDef HAL_SPI_TransmitReceive_DMA(SPI_HandleTypeDef *hspi, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size);
  HAL_StatusTypeDef HAL_SPI_DMAPause(SPI_HandleTypeDef *hspi);
  HAL_StatusTypeDef HAL_SPI_DMAResume(SPI_HandleTypeDef *hspi);
  HAL_StatusTypeDef HAL_SPI_DMAStop(SPI_HandleTypeDef *hspi);
  
  void HAL_SPI_IRQHandler(SPI_HandleTypeDef *hspi);
  void HAL_SPI_TxCpltCallback(SPI_HandleTypeDef *hspi);
  void HAL_SPI_RxCpltCallback(SPI_HandleTypeDef *hspi);
  void HAL_SPI_TxRxCpltCallback(SPI_HandleTypeDef *hspi);
  void HAL_SPI_ErrorCallback(SPI_HandleTypeDef *hspi);
  void HAL_SPI_TxHalfCpltCallback(SPI_HandleTypeDef *hspi);
  void HAL_SPI_RxHalfCpltCallback(SPI_HandleTypeDef *hspi);
  void HAL_SPI_TxRxHalfCpltCallback(SPI_HandleTypeDef *hspi);
  /**
    * @}
    */
    
  /** @addtogroup SPI_Exported_Functions_Group3
    * @{
    */
  /* Peripheral State and Control functions  **************************************/
  HAL_SPI_StateTypeDef HAL_SPI_GetState(SPI_HandleTypeDef *hspi);
  uint32_t HAL_SPI_GetError(SPI_HandleTypeDef *hspi);
  
  /**
    * @}
    */ 
  
  /**
    * @}
    */
    
  /* Private types -------------------------------------------------------------*/
  /* Private variables ---------------------------------------------------------*/
  /* Private constants ---------------------------------------------------------*/
  /** @defgroup SPI_Private_Constants SPI Private Constants
    * @{
    */
  /**
    * @}
    */
  
  /* Private macros ------------------------------------------------------------*/
  /** @defgroup SPI_Private_Macros SPI Private Macros
    * @{
    */
  
  #define IS_SPI_MODE(MODE) (((MODE) == SPI_MODE_SLAVE) || \
                             ((MODE) == SPI_MODE_MASTER))
                             
  
  #define IS_SPI_DIRECTION_MODE(MODE) (((MODE) == SPI_DIRECTION_2LINES)        || \
                                       ((MODE) == SPI_DIRECTION_2LINES_RXONLY) || \
                                       ((MODE) == SPI_DIRECTION_1LINE))
  
  #define IS_SPI_DIRECTION_2LINES_OR_1LINE(MODE) (((MODE) == SPI_DIRECTION_2LINES)  || \
                                                  ((MODE) == SPI_DIRECTION_1LINE))
  
  #define IS_SPI_DIRECTION_2LINES(MODE) ((MODE) == SPI_DIRECTION_2LINES)
    
  #define IS_SPI_DATASIZE(DATASIZE) (((DATASIZE) == SPI_DATASIZE_16BIT) || \
                                     ((DATASIZE) == SPI_DATASIZE_8BIT))
  
  #define IS_SPI_CPOL(CPOL) (((CPOL) == SPI_POLARITY_LOW) || \
                             ((CPOL) == SPI_POLARITY_HIGH))                         
  
  #define IS_SPI_CPHA(CPHA) (((CPHA) == SPI_PHASE_1EDGE) || \
                             ((CPHA) == SPI_PHASE_2EDGE))
  
  #define IS_SPI_NSS(NSS) (((NSS) == SPI_NSS_SOFT)       || \
                           ((NSS) == SPI_NSS_HARD_INPUT) || \
                           ((NSS) == SPI_NSS_HARD_OUTPUT))
  
  #define IS_SPI_BAUDRATE_PRESCALER(PRESCALER) (((PRESCALER) == SPI_BAUDRATEPRESCALER_2)   || \
                                                ((PRESCALER) == SPI_BAUDRATEPRESCALER_4)   || \
                                                ((PRESCALER) == SPI_BAUDRATEPRESCALER_8)   || \
                                                ((PRESCALER) == SPI_BAUDRATEPRESCALER_16)  || \
                                                ((PRESCALER) == SPI_BAUDRATEPRESCALER_32)  || \
                                                ((PRESCALER) == SPI_BAUDRATEPRESCALER_64)  || \
                                                ((PRESCALER) == SPI_BAUDRATEPRESCALER_128) || \
                                                ((PRESCALER) == SPI_BAUDRATEPRESCALER_256))
  
  #define IS_SPI_FIRST_BIT(BIT) (((BIT) == SPI_FIRSTBIT_MSB) || \
                                 ((BIT) == SPI_FIRSTBIT_LSB))
  
  #define IS_SPI_TIMODE(MODE) (((MODE) == SPI_TIMODE_DISABLE) || \
                               ((MODE) == SPI_TIMODE_ENABLE))
  
  #define IS_SPI_CRC_CALCULATION(CALCULATION) (((CALCULATION) == SPI_CRCCALCULATION_DISABLE) || \
                                               ((CALCULATION) == SPI_CRCCALCULATION_ENABLE))
                                                                                                        
  #define IS_SPI_CRC_POLYNOMIAL(POLYNOMIAL) (((POLYNOMIAL) >= 0x1) && ((POLYNOMIAL) <= 0xFFFF))
   
  #define SPI_1LINE_TX(__HANDLE__) ((__HANDLE__)->Instance->CR1 |= SPI_CR1_BIDIOE)
  
  #define SPI_1LINE_RX(__HANDLE__) ((__HANDLE__)->Instance->CR1 &= ~SPI_CR1_BIDIOE) 
  
  #define SPI_RESET_CRC(__HANDLE__) do{(__HANDLE__)->Instance->CR1 &= (~SPI_CR1_CRCEN);\
                                             (__HANDLE__)->Instance->CR1 |= SPI_CR1_CRCEN;}while(0)                           
  /**
    * @}
    */
  
  /* Private functions ---------------------------------------------------------*/
  /** @defgroup SPI_Private_Functions SPI Private Functions
    * @{
    */
  
  /**
    * @}
    */
  
  /**
    * @}
    */ 
  
  /**
    * @}
    */
  
    
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* __STM32F4xx_HAL_SPI_H */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  