Enum WpeCaravelUnplaceable 

pub enum WpeCaravelUnplaceable {
    PinNotUser {
        pin: u8,
    },
    PinShared {
        pin: u8,
    },
    BaudUnreachable {
        baud: u32,
        clks_per_bit: u64,
        error_ppm: u64,
    },
    ClockOutsideEdgeRange {
        engine_ps: u32,
        fastest_ps: u32,
        slowest_ps: u32,
    },
    ReadWindowShortOfHarness {
        half_sclk_ps: u64,
        round_trip_ps: u64,
    },
    Memory(OffchipUnplaceable),
}

Why the engine cannot be wired to Caravel as asked.

Variants

PinNotUser

A pin is a housekeeping pin or past the last GPIO.

Fields

pin: u8

PinShared

Two signals share a pin.

Fields

pin: u8

BaudUnreachable

The clock cannot make the baud rate within a UART’s tolerance.

Fields

baud: u32

clks_per_bit: u64

error_ppm: u64

ClockOutsideEdgeRange

The engine’s clock lies outside the range the PSRAM edge is timed for.

Fields

engine_ps: u32

fastest_ps: u32

slowest_ps: u32

ReadWindowShortOfHarness

Half an SCLK period at the engine’s clock does not cover a read’s round trip through the harness and the board: SCLK out to the part, the part’s tACLK, the data back in.

Fields

half_sclk_ps: u64

round_trip_ps: u64

Memory(OffchipUnplaceable)

The off-chip memories refuse the configuration or the UART.

Trait Implementations

impl Clone for WpeCaravelUnplaceable

fn clone(&self) -> WpeCaravelUnplaceable

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for WpeCaravelUnplaceable

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for WpeCaravelUnplaceable

fn eq(&self, other: &WpeCaravelUnplaceable) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for WpeCaravelUnplaceable

impl StructuralPartialEq for WpeCaravelUnplaceable