// spb.h

VOID SPB_MULTI_SPI_WRITE_TRANSFER_INIT(
  SPB_MULTI_SPI_WRITE_TRANSFER *SpiTransfer,
  SPB_MULTI_SPI_TRANSFER_MODE  Mode,
  ULONG                        WritePhaseSingleSpiByteCount,
  ULONG                        WaitCycleByteCount
);
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Windows Driver Kit DDI reference (nf-spb-spb_multi_spi_write_transfer_init)

Description

The SPB_MULTI_SPI_WRITE_TRANSFER_INIT function initializes an SPB_MULTI_SPI_WRITE_TRANSFER structure.

Parameters

`SpiTransfer`

A pointer to the SPB_MULTI_SPI_WRITE_TRANSFER structure that is to be initialized.

`Mode`

An SPB_MULTI_SPI_TRANSFER_MODE enumeration value, specifying the line mode of the multi-SPI transfer to be used by a bus driver to communicate with a peripheral device.

`WritePhaseSingleSpiByteCount`

The count of bytes at the beginning of the write phase to be transferred in single-SPI mode, before line mode switch to the mode specified in the Mode member of this struct.

`WaitCycleByteCount`

The number of wait cycles represented as the number of bytes, between the write phase and read phase of the transfer. For a write operation, which is single phase, this should be set to 0.

Remarks

The SPB_MULTI_SPI_WRITE_TRANSFER_INIT function should be used to initialize multi-SPI write transfers. It initializes a SPB_MULTI_SPI_WRITE_TRANSFER structure with the single transfer phase required for a write operation.

SPB_MULTI_SPI_WRITE_TRANSFER_INIT - NtDoc