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UM1581

Serial peripheral interface (SPI)

DocID023800 Rev 1

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configuration). But in case the prescaler value is greater than

511, the default value (0x02) will be configured instead.

20.2.7.6 SPI_Cmd

Function Name

void SPI_Cmd ( SPI_TypeDef * SPIx, FunctionalState

NewState)

Function Description

Enables or disables the specified SPI peripheral.

Parameters

 SPIx : where x can be 1, 2 or 3 to select the SPI peripheral.

 NewState : new state of the SPIx peripheral. This parameter

can be: ENABLE or DISABLE.

Return values

 None.

Notes

 None.

20.2.7.7 SPI_TIModeCmd

Function Name

void SPI_TIModeCmd ( SPI_TypeDef * SPIx, FunctionalState

NewState)

Function Description

Enables or disables the TI Mode.

Parameters

 SPIx : where x can be 1, 2 or 3 to select the SPI peripheral.

 NewState : new state of the selected SPI TI communication

mode. This parameter can be: ENABLE or DISABLE.

Return values

 None.

Notes

 This function can be called only after the SPI_Init() function

has been called.

 When TI mode is selected, the control bits SSM, SSI, CPOL

and CPHA are not taken into consideration and are

configured by hardware respectively to the TI mode

requirements.

ST STM32F31xx User Manual

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