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embassy_usb::class::hid

Struct HidWriter

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pub struct HidWriter<'d, D: Driver<'d>, const N: usize> { /* private fields */ }
Expand description

USB HID writer.

You can obtain a HidWriter using HidReaderWriter::split.

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impl<'d, D: Driver<'d>, const N: usize> HidWriter<'d, D, N>

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pub fn new( builder: &mut Builder<'d, D>, state: &'d mut State<'d>, config: Config<'d>, ) -> Self

Creates a new HidWriter.

This will allocate one IN endpoint only, so the host won’t be able to send reports to us. If you need that, consider using HidReaderWriter::new instead.

poll_ms configures how frequently the host should poll for reading/writing HID reports. A lower value means better throughput & latency, at the expense of CPU on the device & bandwidth on the bus. A value of 10 is reasonable for high performance uses, and a value of 255 is good for best-effort usecases.

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pub async fn ready(&mut self)

Waits for the interrupt in endpoint to be enabled.

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pub async fn write_serialize<IR: AsInputReport>( &mut self, r: &IR, ) -> Result<(), EndpointError>

Writes an input report by serializing the given report structure.

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pub async fn write(&mut self, report: &[u8]) -> Result<(), EndpointError>

Writes report to its interrupt endpoint.

Auto Trait Implementations§

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impl<'d, D, const N: usize> Freeze for HidWriter<'d, D, N>
where <D as Driver<'d>>::EndpointIn: Freeze,

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impl<'d, D, const N: usize> RefUnwindSafe for HidWriter<'d, D, N>
where <D as Driver<'d>>::EndpointIn: RefUnwindSafe,

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impl<'d, D, const N: usize> Send for HidWriter<'d, D, N>
where <D as Driver<'d>>::EndpointIn: Send,

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impl<'d, D, const N: usize> Sync for HidWriter<'d, D, N>
where <D as Driver<'d>>::EndpointIn: Sync,

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impl<'d, D, const N: usize> Unpin for HidWriter<'d, D, N>
where <D as Driver<'d>>::EndpointIn: Unpin,

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impl<'d, D, const N: usize> UnwindSafe for HidWriter<'d, D, N>
where <D as Driver<'d>>::EndpointIn: UnwindSafe,

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

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fn type_id(&self) -> TypeId

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

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.