Data transfers functions.
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Data transfers functions.
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Data transfers functions
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This section provides a set of functions allowing to manage the SPI data transfers
In reception, data are received and then stored into an internal Rx buffer while
In transmission, data are first stored into an internal Tx buffer before being
transmitted.
The read access of the SPI_DR register can be done using the SPI_I2S_ReceiveData()
function and returns the Rx buffered value. Whereas a write access to the SPI_DR
can be done using SPI_I2S_SendData() function and stores the written data into
Tx buffer.
| uint16_t SPI_I2S_ReceiveData |
( |
SPI_TypeDef * |
SPIx | ) |
|
Returns the most recent received data by the SPIx/I2Sx peripheral.
- 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. |
- Return values
-
| The | value of the received data. |
| void SPI_I2S_SendData |
( |
SPI_TypeDef * |
SPIx, |
|
|
uint16_t |
Data |
|
) |
| |
Transmits a Data through the SPIx/I2Sx peripheral.
- 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. |
| Data,: | Data to be transmitted. |
- Return values
-
1.8.3.1