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rp: generalize adc inputs from pins to channels

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this lets us treat pins and the temperature sensor uniformly using the
same interface. uniformity in turn lets us add more adc features without
combinatorial explosion of methods and types needed to handle them all.
This commit is contained in:
pennae
2023-07-21 21:31:44 +02:00
parent 54d31c98fe
commit b166ed6b78
4 changed files with 66 additions and 70 deletions
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11
examples/rp/src/bin/adc.rs
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@ -7,7 +7,7 @@
use defmt::*;
use embassy_executor::Spawner;
use embassy_rp::adc::{Adc, Config, InterruptHandler, Pin};
use embassy_rp::adc::{Adc, Channel, Config, InterruptHandler};
use embassy_rp::bind_interrupts;
use embassy_rp::gpio::Pull;
use embassy_time::{Duration, Timer};
@ -22,9 +22,10 @@ async fn main(_spawner: Spawner) {
let p = embassy_rp::init(Default::default());
let mut adc = Adc::new(p.ADC, Irqs, Config::default());
let mut p26 = Pin::new(p.PIN_26, Pull::None);
let mut p27 = Pin::new(p.PIN_27, Pull::None);
let mut p28 = Pin::new(p.PIN_28, Pull::None);
let mut p26 = Channel::new_pin(p.PIN_26, Pull::None);
let mut p27 = Channel::new_pin(p.PIN_27, Pull::None);
let mut p28 = Channel::new_pin(p.PIN_28, Pull::None);
let mut ts = Channel::new_sensor(p.ADC_TEMP_SENSOR);
loop {
let level = adc.read(&mut p26).await.unwrap();
@ -33,7 +34,7 @@ async fn main(_spawner: Spawner) {
info!("Pin 27 ADC: {}", level);
let level = adc.read(&mut p28).await.unwrap();
info!("Pin 28 ADC: {}", level);
let temp = adc.read_temperature().await.unwrap();
let temp = adc.read(&mut ts).await.unwrap();
info!("Temp: {} degrees", convert_to_celsius(temp));
Timer::after(Duration::from_secs(1)).await;
}