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We must allow the run handler to mutate state

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The handler may well need to close over and mutate state
This commit is contained in:
huntc 2021-10-15 17:44:23 +11:00
parent 34e9e85819
commit 3be274dc2a
2 changed files with 19 additions and 4 deletions
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4
embassy-nrf/src/saadc.rs
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@ -262,9 +262,9 @@ impl<'d, const N: usize> Saadc<'d, N> {
&mut self,
bufs: &mut [[i16; N0]; 2],
mode: Mode,
sampler: S,
mut sampler: S,
) where
S: Fn(&[i16]) -> SamplerState,
S: FnMut(&[i16]) -> SamplerState,
{
let r = Self::regs();

19
examples/nrf/src/bin/saadc_continuous.rs
View File

@ -40,9 +40,24 @@ async fn main(_spawner: Spawner, mut p: Peripherals) {
timer.start();
let mut bufs = [[0; 3 * 500]; 2]; // Each buffer of the double buffer has to be large enough for all channels.
let mut c = 0;
let mut a: i32 = 0;
saadc
.run_sampler(&mut bufs, Mode::Task, |buf| {
info!("sample len={}", buf.len());
.run_sampler(&mut bufs, Mode::Task, move |buf| {
for (i, b) in buf.iter().enumerate() {
if i % 3 == 0 {
a += *b as i32;
c += 1;
}
}
if c > 10000 {
a = a / c as i32;
info!("sample: {=i32}", a);
c = 0;
a = 0;
}
SamplerState::Sampled
})
.await;