spi_xfer_config Struct Reference

SPI transfer configuration structure. More...

#include <spi.h>

Data Fields
bool	wait_for_tx_fifo_drain
uint32_t *	tx_buff
uint32_t *	rx_buff
uint32_t	tx_dummy
uint32_t	xfer_size
spi_cb_t	callback
void *	user_data
uint32_t	timeout

Detailed Description

SPI transfer configuration structure.

This structure describes parameters for an SPI transfer operation.

Field Documentation

wait_for_tx_fifo_drain

bool spi_xfer_config::wait_for_tx_fifo_drain

Wait until TX FIFO is drained before completing transfer

tx_buff

uint32_t* spi_xfer_config::tx_buff

Pointer to TX buffer (must be at least xfer_size long)

rx_buff

uint32_t* spi_xfer_config::rx_buff

Pointer to RX buffer (must be at least xfer_size long)

tx_dummy

uint32_t spi_xfer_config::tx_dummy

Dummy data to send if tx_buff is NULL

xfer_size

uint32_t spi_xfer_config::xfer_size

Number of data elements to transfer

callback

spi_cb_t spi_xfer_config::callback

Callback on transfer completion (non-blocking only)

user_data

void* spi_xfer_config::user_data

User context data for callback

timeout

uint32_t spi_xfer_config::timeout

Timeout duration in loop count