ST STM32F31xx

Serial peripheral interface (SPI)
UM1581
412/584
DocID023800 Rev 1
SPI_InitStruct)
Function Description
Initializes the SPIx peripheral according to the specified
parameters in the SPI_InitStruct.
Parameters
 SPIx : where x can be 1, 2 or 3 to select the SPI peripheral.
 SPI_InitStruct : pointer to a SPI_InitTypeDef structure that
contains the configuration information for the specified SPI
peripheral.
Return values
 None.
Notes
 None.
20.2.7.4 I2S_StructInit
Function Name
void I2S_StructInit ( I2S_InitTypeDef * I2S_InitStruct)
Function Description
Fills each I2S_InitStruct member with its default value.
Parameters
 I2S_InitStruct : : pointer to a I2S_InitTypeDef structure
which will be initialized.
Return values
 None.
Notes
 None.
20.2.7.5 I2S_Init
Function Name
void I2S_Init ( SPI_TypeDef * SPIx, I2S_InitTypeDef *
I2S_InitStruct)
Function Description
Initializes the SPIx peripheral according to the specified
parameters in the I2S_InitStruct.
Parameters
 SPIx:To : select the SPIx peripheral, where x can be: 2 or 3
in I2S mode.
 I2S_InitStruct : pointer to an I2S_InitTypeDef structure that
contains the configuration information for the specified SPI
peripheral configured in I2S mode.
Return values
 None.
Notes
 The function calculates the optimal prescaler needed to
obtain the most accurate audio frequency (depending on the
I2S clock source, the PLL values and the product