ST STM32F31xx

Serial peripheral interface (SPI)
UM1581
424/584
DocID023800 Rev 1
Notes
 None.
20.2.11.4 SPI_I2S_GetFlagStatus
Function Name
FlagStatus SPI_I2S_GetFlagStatus ( SPI_TypeDef * SPIx,
uint16_t SPI_I2S_FLAG)
Function Description
Checks whether the specified SPI flag is set or not.
Parameters
 SPIx : To select the SPIx/I2Sx peripheral, where x can be: 1,
2 or 3 in SPI mode or 2 or 3 in I2S mode or I2Sxext for I2S full
duplex mode.
 SPI_I2S_FLAG : specifies the SPI flag to check. This
parameter can be one of the following values:
 SPI_I2S_FLAG_TXE : Transmit buffer empty flag.
 SPI_I2S_FLAG_RXNE : Receive buffer not empty flag.
 SPI_I2S_FLAG_BSY : Busy flag.
 SPI_I2S_FLAG_OVR : Overrun flag.
 SPI_I2S_FLAG_MODF : Mode Fault flag.
 SPI_I2S_FLAG_CRCERR : CRC Error flag.
 SPI_I2S_FLAG_FRE : TI frame format error flag.
 I2S_FLAG_UDR : Underrun Error flag.
 I2S_FLAG_CHSIDE : Channel Side flag.
Return values
 The new state of SPI_I2S_FLAG (SET or RESET).
Notes
 None.
20.2.11.5 SPI_I2S_ClearFlag
Function Name
void SPI_I2S_ClearFlag ( SPI_TypeDef * SPIx, uint16_t
SPI_I2S_FLAG)
Function Description
Clears the SPIx CRC Error (CRCERR) flag.
Parameters
 SPIx : To select the SPIx/I2Sx peripheral, where x can be: 1,
2 or 3 in SPI mode or 2 or 3 in I2S mode or I2Sxext for I2S full
duplex mode.
 SPI_I2S_FLAG : specifies the SPI flag to clear. This function
clears only CRCERR flag.
Return values
 None.
Notes
 OVR (OverRun error) flag is cleared by software sequence: a