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better u5 adc example

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This commit is contained in:
klownfish 2024-12-18 01:46:26 +01:00
parent 7b45577704
commit 8eeff8502d
1 changed files with 43 additions and 22 deletions
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65
examples/stm32u5/src/bin/adc.rs
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@ -6,6 +6,7 @@ use defmt::{*};
use defmt_rtt as _;
use embassy_stm32::adc;
use embassy_stm32::adc::AdcChannel;
use embassy_stm32::adc::adc4;
use panic_probe as _;
@ -33,37 +34,57 @@ async fn main(spawner: embassy_executor::Spawner) {
}
let p = embassy_stm32::init(config);
info!("Hello World!");
let mut p = embassy_stm32::init(config);
let mut adc = adc::Adc::new(p.ADC1);
let mut adc_pin = p.PA3;
let mut adc_pin1 = p.PA3; // A0 on nucleo u5a5
let mut adc_pin2 = p.PA2; // A1 on nucleo u5a5
adc.set_resolution(adc::Resolution::BITS14);
adc.set_averaging(adc::Averaging::Samples1024);
adc.set_sample_time(adc::SampleTime::CYCLES1_5);
let mut adc2 = adc::Adc::new(p.ADC2);
let mut adc_pin2 = p.PA5;
adc2.set_resolution(adc::Resolution::BITS14);
adc2.set_averaging(adc::Averaging::Samples1024);
adc2.set_sample_time(adc::SampleTime::CYCLES1_5);
adc.set_sample_time(adc::SampleTime::CYCLES160_5);
let max = adc::resolution_to_max_count(adc::Resolution::BITS14);
let mut adc4 = adc4::Adc4::new(p.ADC4);
let mut adc_pin4 = p.PD11;
let mut adc4_pin1 = p.PD11;
let mut adc4_pin2 = p.PC0;
adc4.set_resolution(adc4::Resolution::BITS12);
adc4.set_averaging(adc4::Averaging::Samples256);
adc4.set_sample_time(adc4::SampleTime::CYCLES1_5);
let max4 = adc4::resolution_to_max_count(adc4::Resolution::BITS12);
loop {
embassy_time::Timer::after_millis(100).await;
let raw :u16 = adc.blocking_read(&mut adc_pin);
let max = adc::resolution_to_max_count(adc::Resolution::BITS14);
let volt: f32 = 3.3 * raw as f32 / max as f32;
info!("Read ADC1 {}", volt);
let raw: u16 = adc.blocking_read(&mut adc_pin1);
let volt: f32 = 3.3 * raw as f32 / max as f32;
info!("Read 1 pin 1 {}", volt);
let raw: u16 = adc.blocking_read(&mut adc_pin2);
let volt: f32 = 3.3 * raw as f32 / max as f32;
info!("Read 1 pin 2 {}", volt);
let raw4: u16 = adc4.blocking_read(&mut adc4_pin1);
let volt4: f32 = 3.3 * raw4 as f32 / max4 as f32;
info!("Read 4 pin 1 {}", volt4);
let raw4: u16 = adc4.blocking_read(&mut adc4_pin2);
let volt4: f32 = 3.3 * raw4 as f32 / max4 as f32;
info!("Read 4 pin 2 {}", volt4);
let mut degraded1 = adc_pin1.degrade_adc();
let mut degraded2 = adc_pin2.degrade_adc();
let mut measurements = [0u16; 2];
adc.read(
&mut p.GPDMA1_CH0,
[
(&mut degraded2, adc::SampleTime::CYCLES160_5),
(&mut degraded1, adc::SampleTime::CYCLES160_5),
]
.into_iter(),
&mut measurements,
).await;
let volt1: f32 = 3.3 * measurements[1] as f32 / max as f32;
let volt2: f32 = 3.3 * measurements[0] as f32 / max as f32;
info!("Async read 1 pin 1 {}", volt1);
info!("Async read 1 pin 2 {}", volt2);
let raw4 :u16 = adc4.blocking_read(&mut adc_pin4);
let max4 = adc4::resolution_to_max_count(adc4::Resolution::BITS12);
let volt4: f32 = 3.3 * raw4 as f32 / max4 as f32;
info!("Read ADC4 {}", volt4);
}
}