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Make PIO IRQ IDs into ZSTs #723

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Nov 23, 2023
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Make PIO IRQ IDs into ZSTs #723

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21 changes: 15 additions & 6 deletions rp2040-hal/src/pio.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -123,20 +123,29 @@ impl<P: PIOExt> PIO<P> {
self.pio
}

/// This PIO's IRQ0 interrupt.
pub fn irq0(&self) -> Interrupt<'_, P, 0> {
/// This PIO's interrupt by index.
pub fn irq<const IRQ: usize>(&self) -> Interrupt<'_, P, IRQ> {
struct IRQSanity<const X: usize>;
impl<const IRQ: usize> IRQSanity<IRQ> {
const CHECK: () = assert!(IRQ <= 1, "IRQ index must be either 0 or 1");
}

#[allow(clippy::let_unit_value)]
let _ = IRQSanity::<IRQ>::CHECK;
Interrupt {
block: self.pio.deref(),
_phantom: core::marker::PhantomData,
}
}

/// This PIO's IRQ0 interrupt.
pub fn irq0(&self) -> Interrupt<'_, P, 0> {
self.irq()
}

/// This PIO's IRQ1 interrupt.
pub fn irq1(&self) -> Interrupt<'_, P, 1> {
Interrupt {
block: self.pio.deref(),
_phantom: core::marker::PhantomData,
}
self.irq()
}

/// Get raw irq flags.
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