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simplify api, more interesting example

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This commit is contained in:
Jacob Rosenthal 2021-10-29 16:39:41 -07:00
parent eb0bf1fd7a
commit 1d1d8a848e
2 changed files with 10 additions and 26 deletions
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22
embassy-nrf/src/pwm.rs
View file

@ -153,7 +153,6 @@ impl<'d, T: Instance> Pwm<'d, T> {
ch2: impl Unborrow<Target = impl GpioOptionalPin> + 'd,
ch3: impl Unborrow<Target = impl GpioOptionalPin> + 'd,
config: LoopingConfig,
count: u16,
) -> Result<Self, Error> {
slice_in_ram_or(config.sequence, Error::DMABufferNotInDataMemory)?;
@ -163,8 +162,6 @@ impl<'d, T: Instance> Pwm<'d, T> {
unborrow!(ch0, ch1, ch2, ch3);
let odd: bool = count & 1 == 1;
let r = T::regs();
if let Some(pin) = ch0.pin_mut() {
@ -224,25 +221,12 @@ impl<'d, T: Instance> Pwm<'d, T> {
.enddelay
.write(|w| unsafe { w.bits(config.enddelay) });
let mut loop_: u16 = count / 2;
if odd {
loop_ += 1;
}
r.loop_.write(|w| unsafe { w.cnt().bits(0x1) });
r.loop_.write(|w| unsafe { w.cnt().bits(loop_) });
if odd {
r.shorts.write(|w| w.loopsdone_seqstart1().set_bit());
} else {
r.shorts.write(|w| w.loopsdone_seqstart0().set_bit());
}
r.shorts.write(|w| w.loopsdone_seqstart1().set_bit());
// tasks_seqstart doesnt exist in all svds so write its bit instead
if odd {
r.tasks_seqstart[1].write(|w| unsafe { w.bits(0x01) });
} else {
r.tasks_seqstart[0].write(|w| unsafe { w.bits(0x01) });
}
r.tasks_seqstart[1].write(|w| unsafe { w.bits(0x01) });
Ok(Self {
phantom: PhantomData,

14
examples/nrf/src/bin/pwm_sequence.rs
View file

@ -7,26 +7,26 @@ mod example_common;
use defmt::*;
use embassy::executor::Spawner;
use embassy::time::{Duration, Timer};
use embassy_nrf::gpio::NoPin;
use embassy_nrf::pwm::{CounterMode, LoopingConfig, Prescaler, Pwm, SequenceLoad};
use embassy_nrf::Peripherals;
#[embassy::main]
async fn main(_spawner: Spawner, p: Peripherals) {
let seq_values: [u16; 2] = [0, 0x8000];
let seq_values: [u16; 16] = [
0x8000, 0, 0, 0, 0, 0x8000, 0, 0, 0, 0, 0x8000, 0, 0, 0, 0, 0x8000,
];
let config = LoopingConfig {
counter_mode: CounterMode::Up,
top: 31250,
top: 15625,
prescaler: Prescaler::Div128,
sequence: &seq_values,
sequence_load: SequenceLoad::Common,
repeats: 1,
sequence_load: SequenceLoad::Individual,
repeats: 0,
enddelay: 0,
};
let pwm = unwrap!(Pwm::simple_playback(
p.PWM0, p.P0_13, NoPin, NoPin, NoPin, config, 1
p.PWM0, p.P0_13, p.P0_15, p.P0_16, p.P0_14, config
));
info!("pwm started!");