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stm32/adc: add async conversion

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This commit is contained in:
xoviat
2023-09-18 16:31:20 -05:00
parent daeb497045
commit e640933e2f
3 changed files with 109 additions and 18 deletions
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23
examples/stm32f334/src/bin/adc.rs
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@ -4,13 +4,18 @@
use defmt::info;
use embassy_executor::Spawner;
use embassy_stm32::adc::{Adc, SampleTime, VREF_INT};
use embassy_stm32::adc::{Adc, SampleTime};
use embassy_stm32::peripherals::ADC1;
use embassy_stm32::rcc::AdcClockSource;
use embassy_stm32::time::mhz;
use embassy_stm32::Config;
use embassy_stm32::{adc, bind_interrupts, Config};
use embassy_time::{Delay, Duration, Timer};
use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs {
ADC1_2 => adc::InterruptHandler<ADC1>;
});
#[embassy_executor::main]
async fn main(_spawner: Spawner) -> ! {
let mut config = Config::default();
@ -24,7 +29,7 @@ async fn main(_spawner: Spawner) -> ! {
info!("create adc...");
let mut adc = Adc::new(p.ADC1, &mut Delay);
let mut adc = Adc::new(p.ADC1, Irqs, &mut Delay);
adc.set_sample_time(SampleTime::Cycles601_5);
@ -34,18 +39,18 @@ async fn main(_spawner: Spawner) -> ! {
let mut temperature = adc.enable_temperature();
loop {
let vref = adc.read(&mut vrefint);
info!("read vref: {}", vref);
let vref = adc.read(&mut vrefint).await;
info!("read vref: {} (should be {})", vref, vrefint.value());
let temp = adc.read(&mut temperature);
let temp = adc.read(&mut temperature).await;
info!("read temperature: {}", temp);
let pin = adc.read(&mut p.PA0);
let pin = adc.read(&mut p.PA0).await;
info!("read pin: {}", pin);
let pin_mv = pin as u32 * VREF_INT as u32 / vref as u32;
let pin_mv = (pin as u32 * vrefint.value() as u32 / vref as u32) * 3300 / 4095;
info!("computed pin mv: {}", pin_mv);
Timer::after(Duration::from_secs(1)).await;
Timer::after(Duration::from_millis(500)).await;
}
}