nrf_sqspi_xfer_prepare()

nrfx_err_t nrf_sqspi_xfer_prepare	(	nrf_sqspi_t const *	p_qspi,
		nrf_sqspi_xfer_t const *	p_xfer,
		size_t	xfer_count )

#include <softperipheral/sQSPI/include/nrf_sqspi.h>

Prepare the serial interface to transfer the data.

This function is an equivalent of nrf_sqspi_xfer with NRF_SQSPI_FLAG_HOLD_XFER flag set.

The start of the prepared transfer must be triggered outside of this function.

See also

nrf_sqspi_start_task_address_get

If the controller mode transfer is in progress, a new transfer can be requested. If the driver is capable of queueing the requested transfer, the function returns NRFX_SUCCESS. If not, it returns NRFX_ERROR_BUSY. If the target mode transfer is idle waiting for the remote controller, new transfer requests abort the idling transfer and the nrf_sqspi_callback_t is called to indicate aborted transfer. If the target mode transfer is activated by the remote controller, a new requested transfer can be queued by the driver. If the driver is capable of queuing the new transfer, the function returns NRFX_SUCCESS. Otherwise, it returns NRFX_ERROR_BUSY.

Parameters

[in]	p_qspi	Identifier of the QSPI instance transferring data.
[in]	p_xfer	Pointer to a structure describing the data transfer.
[in]	xfer_count	Number of transfers in the array pointed by p_xfer.

Return values

NRFX_SUCCESS	The transfer is prepared
NRFX_ERROR_BUSY	There is ongoing transfer