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UsbBuffers

hsm_firmware::usb

Struct UsbBuffers

pub(crate) struct UsbBuffers {
    pub(crate) config_descriptor: [u8; 256],
    pub(crate) bos_descriptor: [u8; 256],
    pub(crate) msos_descriptor: [u8; 256],
    pub(crate) control_buf: [u8; 64],
}

Expand description

Descriptor and control-transfer buffers borrowed by the embassy-usb builder for the lifetime of the device.

Held in a separate struct so the borrow checker sees one stable address for each buffer. Storing them as fields of a single static mut value is the idiomatic embassy-rp pattern for systems without an allocator.

Fields§

§config_descriptor: [u8; 256]

USB configuration descriptor buffer.

§bos_descriptor: [u8; 256]

USB BOS descriptor buffer.

§msos_descriptor: [u8; 256]

USB MSOS descriptor buffer (unused, kept for the Builder API).

§control_buf: [u8; 64]

Control transfer scratch buffer.

Implementations§

impl UsbBuffers

pub(crate) const fn new() -> Self

Build an empty set of buffers.

Trait Implementations§

impl Default for UsbBuffers

fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

impl Freeze for UsbBuffers

impl RefUnwindSafe for UsbBuffers

impl Send for UsbBuffers

impl Sync for UsbBuffers

impl Unpin for UsbBuffers

impl UnsafeUnpin for UsbBuffers

impl UnwindSafe for UsbBuffers

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Az for T

fn az<Dst>(self) -> Dst
where T: Cast<Dst>,

Casts the value.

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<Src, Dst> CastFrom<Src> for Dst
where Src: Cast<Dst>,

fn cast_from(src: Src) -> Dst

Casts the value.

impl<T> CheckedAs for T

fn checked_as<Dst>(self) -> Option<Dst>
where T: CheckedCast<Dst>,

Casts the value.

impl<Src, Dst> CheckedCastFrom<Src> for Dst
where Src: CheckedCast<Dst>,

fn checked_cast_from(src: Src) -> Option<Dst>

Casts the value.

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<Src, Dst> LosslessTryInto<Dst> for Src
where Dst: LosslessTryFrom<Src>,

fn lossless_try_into(self) -> Option<Dst>

Performs the conversion.

impl<Src, Dst> LossyInto<Dst> for Src
where Dst: LossyFrom<Src>,

fn lossy_into(self) -> Dst

Performs the conversion.

impl<T> OverflowingAs for T

fn overflowing_as<Dst>(self) -> (Dst, bool)
where T: OverflowingCast<Dst>,

Casts the value.

impl<Src, Dst> OverflowingCastFrom<Src> for Dst
where Src: OverflowingCast<Dst>,

fn overflowing_cast_from(src: Src) -> (Dst, bool)

Casts the value.

impl<T> Same for T

type Output = T

Should always be Self

impl<T> SaturatingAs for T

fn saturating_as<Dst>(self) -> Dst
where T: SaturatingCast<Dst>,

Casts the value.

impl<Src, Dst> SaturatingCastFrom<Src> for Dst
where Src: SaturatingCast<Dst>,

fn saturating_cast_from(src: Src) -> Dst

Casts the value.

impl<T> StrictAs for T

fn strict_as<Dst>(self) -> Dst
where T: StrictCast<Dst>,

Casts the value.

impl<Src, Dst> StrictCastFrom<Src> for Dst
where Src: StrictCast<Dst>,

fn strict_cast_from(src: Src) -> Dst

Casts the value.

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

impl<T> UnwrappedAs for T

fn unwrapped_as<Dst>(self) -> Dst
where T: UnwrappedCast<Dst>,

Casts the value.

impl<Src, Dst> UnwrappedCastFrom<Src> for Dst
where Src: UnwrappedCast<Dst>,

fn unwrapped_cast_from(src: Src) -> Dst

Casts the value.

impl<T> WrappingAs for T

fn wrapping_as<Dst>(self) -> Dst
where T: WrappingCast<Dst>,

Casts the value.

impl<Src, Dst> WrappingCastFrom<Src> for Dst
where Src: WrappingCast<Dst>,

fn wrapping_cast_from(src: Src) -> Dst

Casts the value.