Struct opentitanlib::transport::ultradebug::spi::UltradebugSpi

pub struct UltradebugSpi {
    pub device: Rc<RefCell<Context>>,
    /* private fields */
}

Represents the Ultradebug SPI device.

Fields

device: Rc<RefCell<Context>>

Implementations

impl UltradebugSpi

pub const PIN_CLOCK: u8 = 0u8

pub const PIN_MOSI: u8 = 1u8

pub const PIN_MISO: u8 = 2u8

pub const PIN_CHIP_SELECT: u8 = 3u8

pub const MASK_CHIP_SELECT: u8 = 8u8

pub const PIN_SPI_ZB: u8 = 4u8

pub fn open(ultradebug: &Ultradebug) -> Result<Self>

Trait Implementations

impl Target for UltradebugSpi

fn get_transfer_mode(&self) -> Result<TransferMode>

Gets the current SPI transfer mode.

fn set_transfer_mode(&self, mode: TransferMode) -> Result<()>

Sets the current SPI transfer mode.

fn get_bits_per_word(&self) -> Result<u32>

Gets the current number of bits per word.

fn set_bits_per_word(&self, bits_per_word: u32) -> Result<()>

Sets the current number of bits per word.

fn get_max_speed(&self) -> Result<u32>

Gets the maximum allowed speed of the SPI bus.

fn set_max_speed(&self, frequency: u32) -> Result<()>

Sets the maximum allowed speed of the SPI bus.

fn supports_bidirectional_transfer(&self) -> Result<bool>

Indicates whether Transfer::Both() is supported.

fn get_max_transfer_count(&self) -> Result<usize>

Returns the maximum number of transfers allowed in a single transaction.

fn get_max_transfer_sizes(&self) -> Result<MaxSizes>

Maximum Read and Write data size for run_transaction().

fn run_transaction(&self, transaction: &mut [Transfer<'_, '_>]) -> Result<()>

Runs a SPI transaction composed from the slice of Transfer objects. Will assert the CS for the duration of the entire transactions.

fn assert_cs(self: Rc<Self>) -> Result<AssertChipSelect>

Assert the CS signal. Uses reference counting, will be deasserted when each and every returned AssertChipSelect object have gone out of scope.

fn set_pins( &self, _serial_clock: Option<&Rc<dyn GpioPin>>, _host_out_device_in: Option<&Rc<dyn GpioPin>>, _host_in_device_out: Option<&Rc<dyn GpioPin>>, _chip_select: Option<&Rc<dyn GpioPin>> ) -> Result<()>

Sets which pins should be used for SPI communication. None value means use the same pin as previously, or the implementation default if never before specified. This call is not supported by most backend transports, and ones that do support it may still have restrictions on which set of pins can be used in which roles.

fn set_voltage(&self, _voltage: Voltage) -> Result<()>

fn get_eeprom_max_transfer_sizes(&self) -> Result<MaxSizes>

Maximum payload size of Read and Write elements for run_eeprom_transactions().

fn run_eeprom_transactions( &self, transactions: &mut [Transaction<'_, '_>] ) -> Result<()>

Runs a number of EEPROM/FLASH protocol SPI transactions. Will assert and deassert CS for each transaction.

impl TargetChipDeassert for UltradebugSpi

fn deassert_cs(&self)