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UM1581

Serial peripheral interface (SPI)

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read operation to SPI_DR register (SPI_I2S_ReceiveData())

followed by a read operation to SPI_SR register

(SPI_I2S_GetFlagStatus()).

 MODF (Mode Fault) flag is cleared by software sequence: a

read/write operation to SPI_SR register

(SPI_I2S_GetFlagStatus()) followed by a write operation to

SPI_CR1 register (SPI_Cmd() to enable the SPI).

20.2.11.6 SPI_I2S_GetITStatus

Function Name

ITStatus SPI_I2S_GetITStatus ( SPI_TypeDef * SPIx, uint8_t

SPI_I2S_IT)

Function Description

Checks whether the specified SPI/I2S interrupt has occurred 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_IT : specifies the SPI interrupt source to check. This

parameter can be one of the following values:

 SPI_I2S_IT_TXE : Transmit buffer empty interrupt.

 SPI_I2S_IT_RXNE : Receive buffer not empty interrupt.

 SPI_IT_MODF : Mode Fault interrupt.

 SPI_I2S_IT_OVR : Overrun interrupt.

 I2S_IT_UDR : Underrun interrupt.

 SPI_I2S_IT_FRE : Format Error interrupt.

Return values

 The new state of SPI_I2S_IT (SET or RESET).

Notes

 None.

20.3 SPI Firmware driver defines

20.3.1 SPI

SPI

SPI_BaudRate_Prescaler

 #define: SPI_BaudRatePrescaler_2 ((uint16_t)0x0000)

 #define: SPI_BaudRatePrescaler_4 ((uint16_t)0x0008)

ST STM32F31xx User Manual

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