stm32l4xx_hal_spi_ex.c

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/* Includes ------------------------------------------------------------------*/
#include "stm32l4xx_hal.h"

#ifdef HAL_SPI_MODULE_ENABLED

/* Private typedef -----------------------------------------------------------*/
/* Private defines -----------------------------------------------------------*/
#define SPI_FIFO_SIZE       4UL

/* Private macros ------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/

HAL_StatusTypeDef HAL_SPIEx_FlushRxFifo(SPI_HandleTypeDef *hspi)
{
  __IO uint32_t tmpreg;
  uint8_t  count = 0U;
  while ((hspi->Instance->SR & SPI_FLAG_FRLVL) !=  SPI_FRLVL_EMPTY)
  {
    count++;
    tmpreg = hspi->Instance->DR;
    UNUSED(tmpreg); /* To avoid GCC warning */
    if (count == SPI_FIFO_SIZE)
    {
      return HAL_TIMEOUT;
    }
  }
  return HAL_OK;
}

#endif /* HAL_SPI_MODULE_ENABLED */

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