stm32/adc: add async conversion

1 files changed, 14 insertions, 9 deletions

diff --git a/examples/stm32f334/src/bin/adc.rs b/examples/stm32f334/src/bin/adc.rs
index e8b2cd8a7..ed246a7db 100644
--- a/examples/stm32f334/src/bin/adc.rs
+++ b/examples/stm32f334/src/bin/adc.rs
@@ -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;
     }
 }