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nrf/saadc: add type-erased AnyInput.

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This commit is contained in:
Dario Nieuwenhuis 2022-07-21 16:42:46 +02:00
parent 26fdfdb00a
commit 424f6ffadb
1 changed files with 26 additions and 1 deletions
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27
embassy-nrf/src/saadc.rs
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@ -119,6 +119,25 @@ impl sealed::Input for VddhDiv5Input {
#[cfg(any(feature = "_nrf5340-app", feature = "nrf52833", feature = "nrf52840"))]
impl Input for VddhDiv5Input {}
pub struct AnyInput {
channel: InputChannel,
}
unsafe impl Unborrow for AnyInput {
type Target = AnyInput;
unsafe fn unborrow(self) -> Self::Target {
self
}
}
impl sealed::Input for AnyInput {
fn channel(&self) -> InputChannel {
self.channel
}
}
impl Input for AnyInput {}
impl<'d> ChannelConfig<'d> {
/// Default configuration for single ended channel sampling.
pub fn single_ended(input: impl Unborrow<Target = impl Input> + 'd) -> Self {
@ -670,7 +689,13 @@ pub(crate) mod sealed {
}
/// An input that can be used as either or negative end of a ADC differential in the SAADC periperhal.
pub trait Input: sealed::Input + Unborrow<Target = Self> {}
pub trait Input: sealed::Input + Unborrow<Target = Self> + Sized {
fn degrade_saadc(self) -> AnyInput {
AnyInput {
channel: self.channel(),
}
}
}
macro_rules! impl_saadc_input {
($pin:ident, $ch:ident) => {