IO operation functions

Data transfers functions. More...

Functions
HAL_StatusTypeDef	HAL_SPIEx_FlushRxFifo (SPI_HandleTypeDef *hspi)
	Flush the RX fifo. More...

Detailed Description

Data transfers functions.

  ==============================================================================
                      ##### IO operation functions #####
 ===============================================================================
 [..]
    This subsection provides a set of extended functions to manage the SPI
    data transfers.

    (#) Rx data flush function:
        (++) HAL_SPIEx_FlushRxFifo()

Function Documentation

HAL_SPIEx_FlushRxFifo()

HAL_StatusTypeDef HAL_SPIEx_FlushRxFifo

(

SPI_HandleTypeDef *

hspi

)

Flush the RX fifo.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for the specified SPI module.

Return values

HAL

status

Definition at line 80 of file stm32l4xx_hal_spi_ex.c.

{
  __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;
}