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/**
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  ******************************************************************************
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  * @file    stm32f7xx_hal_spi_ex.c
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  * @author  MCD Application Team
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  * @brief   Extended SPI HAL module driver.
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  *          This file provides firmware functions to manage the following
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  *          SPI peripheral extended functionalities :
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  *           + IO operation functions
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  *
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  ******************************************************************************
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  * @attention
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  *
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  * <h2><center>© COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
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  *
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  * Redistribution and use in source and binary forms, with or without modification,
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  * are permitted provided that the following conditions are met:
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  *   1. Redistributions of source code must retain the above copyright notice,
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  *      this list of conditions and the following disclaimer.
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  *   2. Redistributions in binary form must reproduce the above copyright notice,
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  *      this list of conditions and the following disclaimer in the documentation
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  *      and/or other materials provided with the distribution.
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  *   3. Neither the name of STMicroelectronics nor the names of its contributors
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  *      may be used to endorse or promote products derived from this software
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  *      without specific prior written permission.
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  *
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  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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  *
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  ******************************************************************************
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  */
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f7xx_hal.h"
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/** @addtogroup STM32F7xx_HAL_Driver
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  * @{
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  */
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/** @defgroup SPIEx SPIEx
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  * @brief SPI Extended HAL module driver
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  * @{
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  */
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#ifdef HAL_SPI_MODULE_ENABLED
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/* Private typedef -----------------------------------------------------------*/
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/* Private defines -----------------------------------------------------------*/
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/** @defgroup SPIEx_Private_Constants SPIEx Private Constants
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  * @{
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  */
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#define SPI_FIFO_SIZE       4
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/**
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  * @}
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  */
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/* Private macros ------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/* Exported functions --------------------------------------------------------*/
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/** @defgroup SPIEx_Exported_Functions SPIEx Exported Functions
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  * @{
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  */
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/** @defgroup SPIEx_Exported_Functions_Group1 IO operation functions
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  *  @brief   Data transfers functions
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  *
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@verbatim
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  ==============================================================================
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                      ##### IO operation functions #####
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 ===============================================================================
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 [..]
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    This subsection provides a set of extended functions to manage the SPI
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    data transfers.
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    (#) Rx data flush function:
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        (++) HAL_SPIEx_FlushRxFifo()
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@endverbatim
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  * @{
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  */
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/**
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  * @brief  Flush the RX fifo.
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  * @param  hspi pointer to a SPI_HandleTypeDef structure that contains
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  *               the configuration information for the specified SPI module.
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  * @retval HAL status
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  */
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HAL_StatusTypeDef HAL_SPIEx_FlushRxFifo(SPI_HandleTypeDef *hspi)
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{
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  __IO uint32_t tmpreg;
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  uint8_t  count = 0U;
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  while ((hspi->Instance->SR & SPI_FLAG_FRLVL) !=  SPI_FRLVL_EMPTY)
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  {
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    count++;
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    tmpreg = hspi->Instance->DR;
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    UNUSED(tmpreg); /* To avoid GCC warning */
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    if (count == SPI_FIFO_SIZE)
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    {
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      return HAL_TIMEOUT;
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    }
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  }
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  return HAL_OK;
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}
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/**
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  * @}
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  */
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/**
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  * @}
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  */
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#endif /* HAL_SPI_MODULE_ENABLED */
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/**
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  * @}
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  */
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/**
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  * @}
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  */
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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			@ -0,0 +1,91 @@
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/**
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  ******************************************************************************
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  * @file    stm32f7xx_hal_spi_ex.h
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  * @author  MCD Application Team
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  * @brief   Header file of SPI HAL Extended module.
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  ******************************************************************************
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  * @attention
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  *
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  * <h2><center>© COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
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  *
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  * Redistribution and use in source and binary forms, with or without modification,
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		||||
  * 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.
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		||||
  *   2. Redistributions in binary form must reproduce the above copyright notice,
 | 
			
		||||
  *      this list of conditions and the following disclaimer in the documentation
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		||||
  *      and/or other materials provided with the distribution.
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		||||
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
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		||||
  *      may be used to endorse or promote products derived from this software
 | 
			
		||||
  *      without specific prior written permission.
 | 
			
		||||
  *
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  * 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
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		||||
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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		||||
  * 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
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		||||
  * 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
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		||||
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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  *
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  ******************************************************************************
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  */
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/* Define to prevent recursive inclusion -------------------------------------*/
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#ifndef __STM32F7xx_HAL_SPI_EX_H
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#define __STM32F7xx_HAL_SPI_EX_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f7xx_hal_def.h"
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/** @addtogroup STM32F7xx_HAL_Driver
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  * @{
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  */
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/** @addtogroup SPIEx
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  * @{
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  */
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/* Exported types ------------------------------------------------------------*/
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/* Exported constants --------------------------------------------------------*/
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/* Exported macros -----------------------------------------------------------*/
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/* Exported functions --------------------------------------------------------*/
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/** @addtogroup SPIEx_Exported_Functions
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  * @{
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  */
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/* Initialization and de-initialization functions  ****************************/
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/* IO operation functions *****************************************************/
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/** @addtogroup SPIEx_Exported_Functions_Group1
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  * @{
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  */
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HAL_StatusTypeDef HAL_SPIEx_FlushRxFifo(SPI_HandleTypeDef *hspi);
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/**
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  * @}
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  */
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/**
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  * @}
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  */
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/**
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  * @}
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  */
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/**
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  * @}
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  */
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#ifdef __cplusplus
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}
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#endif
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#endif /* __STM32F7xx_HAL_SPI_EX_H */
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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