34.6.2.9 spi_s_sync_transfer

Write/read at the same time.

int32_t spi_s_sync_transfer(
    struct spi_s_sync_descriptor * spi,
    const struct spi_xfer * xfer
)

Parameters

spi

Type: struct spi_s_sync_descriptor Struct *

Pointer to the HAL SPI instance.

xfer

Type: const struct spi_xfer *

Pointer to the transfer information (spi_xfer).

Returns

Type: int32_t

Operation result.

<0

Error.

>=0

Number of characters transferred.