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/**
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  ******************************************************************************
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  * @file    stm32f0xx_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>&copy; Copyright (c) 2016 STMicroelectronics.
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  * All rights reserved.</center></h2>
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  *
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  * This software component is licensed by ST under BSD 3-Clause license,
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  * the "License"; You may not use this file except in compliance with the
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  * License. You may obtain a copy of the License at:
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  *                        opensource.org/licenses/BSD-3-Clause
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  *
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  ******************************************************************************
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  */
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f0xx_hal.h"
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/** @addtogroup STM32F0xx_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       4UL
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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****/