#[repr(C)]pub struct spi_device_interface_config_t {Show 15 fields
pub command_bits: u8,
pub address_bits: u8,
pub dummy_bits: u8,
pub mode: u8,
pub clock_source: spi_clock_source_t,
pub duty_cycle_pos: u16,
pub cs_ena_pretrans: u16,
pub cs_ena_posttrans: u8,
pub clock_speed_hz: c_int,
pub input_delay_ns: c_int,
pub spics_io_num: c_int,
pub flags: u32,
pub queue_size: c_int,
pub pre_cb: transaction_cb_t,
pub post_cb: transaction_cb_t,
}
Expand description
@brief This is a configuration for a SPI slave device that is connected to one of the SPI buses.
Fields§
§command_bits: u8
< Default amount of bits in command phase (0-16), used when SPI_TRANS_VARIABLE_CMD
is not used, otherwise ignored.
address_bits: u8
< Default amount of bits in address phase (0-64), used when SPI_TRANS_VARIABLE_ADDR
is not used, otherwise ignored.
dummy_bits: u8
< Amount of dummy bits to insert between address and data phase
mode: u8
< SPI mode, representing a pair of (CPOL, CPHA) configuration:
- 0: (0, 0)
- 1: (0, 1)
- 2: (1, 0)
- 3: (1, 1)
clock_source: spi_clock_source_t
< Select SPI clock source, SPI_CLK_SRC_DEFAULT
by default.
duty_cycle_pos: u16
< Duty cycle of positive clock, in 1/256th increments (128 = 50%/50% duty). Setting this to 0 (=not setting it) is equivalent to setting this to 128.
cs_ena_pretrans: u16
< Amount of SPI bit-cycles the cs should be activated before the transmission (0-16). This only works on half-duplex transactions.
cs_ena_posttrans: u8
< Amount of SPI bit-cycles the cs should stay active after the transmission (0-16)
clock_speed_hz: c_int
< SPI clock speed in Hz. Derived from clock_source
.
input_delay_ns: c_int
< Maximum data valid time of slave. The time required between SCLK and MISO valid, including the possible clock delay from slave to master. The driver uses this value to give an extra delay before the MISO is ready on the line. Leave at 0 unless you know you need a delay. For better timing performance at high frequency (over 8MHz), it’s suggest to have the right value.
spics_io_num: c_int
< CS GPIO pin for this device, or -1 if not used
flags: u32
< Bitwise OR of SPI_DEVICE_* flags
queue_size: c_int
< Transaction queue size. This sets how many transactions can be ‘in the air’ (queued using spi_device_queue_trans but not yet finished using spi_device_get_trans_result) at the same time
pre_cb: transaction_cb_t
< Callback to be called before a transmission is started.
This callback is called within interrupt context should be in IRAM for best performance, see “Transferring Speed” section in the SPI Master documentation for full details. If not, the callback may crash during flash operation when the driver is initialized with ESP_INTR_FLAG_IRAM.
post_cb: transaction_cb_t
< Callback to be called after a transmission has completed.
This callback is called within interrupt context should be in IRAM for best performance, see “Transferring Speed” section in the SPI Master documentation for full details. If not, the callback may crash during flash operation when the driver is initialized with ESP_INTR_FLAG_IRAM.
Trait Implementations§
source§impl Clone for spi_device_interface_config_t
impl Clone for spi_device_interface_config_t
source§fn clone(&self) -> spi_device_interface_config_t
fn clone(&self) -> spi_device_interface_config_t
1.0.0§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for spi_device_interface_config_t
impl Debug for spi_device_interface_config_t
source§impl Default for spi_device_interface_config_t
impl Default for spi_device_interface_config_t
impl Copy for spi_device_interface_config_t
Auto Trait Implementations§
impl Freeze for spi_device_interface_config_t
impl RefUnwindSafe for spi_device_interface_config_t
impl Send for spi_device_interface_config_t
impl Sync for spi_device_interface_config_t
impl Unpin for spi_device_interface_config_t
impl UnwindSafe for spi_device_interface_config_t
Blanket Implementations§
§impl<T> Any for Twhere
T: 'static + ?Sized,
impl<T> Any for Twhere
T: 'static + ?Sized,
§impl<T> Borrow<T> for Twhere
T: ?Sized,
impl<T> Borrow<T> for Twhere
T: ?Sized,
§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
§default unsafe fn clone_to_uninit(&self, dst: *mut T)
default unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)§impl<T> CloneToUninit for Twhere
T: Copy,
impl<T> CloneToUninit for Twhere
T: Copy,
§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)