34.1.5.6 spi_m_async_set_mode

Set SPI mode.

int32_t spi_m_async_set_mode(
    struct spi_m_async_descriptor * spi,
    const enum spi_transfer_mode mode
)
Set the SPI transfer mode (spi_transfer_mode), which controls the clock polarity and clock phase:

  • Mode 0: leading edge is rising edge, data sample on leading edge.

  • Mode 1: leading edge is rising edge, data sample on trailing edge.

  • Mode 2: leading edge is falling edge, data sample on leading edge.

  • Mode 3: leading edge is falling edge, data sample on trailing edge.

Parameters

spi

Type: struct spi_m_async_descriptor Struct *

Pointer to the HAL SPI instance.

mode

Type: const enum spi_transfer_mode

The mode (spi_transfer_mode).

Returns

Type: int32_t

Operation status.

ERR_NONE

Success.

ERR_BUSY

Busy, CS activated.