Struct Changes 

pub struct Changes<T: Clone + 'static, const WAITERS: usize = DEFAULT_WAITERS> { /* private fields */ }

Available on crate feature async only.

A handle that resolves each time the configuration is replaced.

Runtime-agnostic, because it is a Future and nothing more: Embassy, RTIC and a hand-written poll loop all drive it.

The configuration current when this was created counts as already seen, so the first changed waits for the next one.

Implementations

impl<T: Clone + 'static, const WAITERS: usize> Changes<T, WAITERS>

pub fn changed(&mut self) -> impl Future<Output = T> + '_

Resolves with the configuration installed by the next change.

Changes that land while nothing is awaiting are not queued: waking up to the latest configuration is what a reader wants, and a queue would hand it stale ones first — which on a device means acting on a setting that has already been superseded.

pub const fn seen(&self) -> u32

The generation this handle has already observed.

Trait Implementations

impl<T: Clone + 'static, const WAITERS: usize> Debug for Changes<T, WAITERS>

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

Formats the value using the given formatter.