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//! adc differential mode example
//!
//! This example uses adc1 in differential mode
//! p:pa0 n:pa1
#![no_std]
#![no_main]
use defmt::*;
use embassy_executor::Spawner;
use embassy_stm32::adc::{Adc, SampleTime};
use embassy_stm32::Config;
use embassy_time::Timer;
use {defmt_rtt as _, panic_probe as _};
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let mut config = Config::default();
{
use embassy_stm32::rcc::*;
config.rcc.pll = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4,
mul: PllMul::MUL85,
divp: None,
divq: None,
// Main system clock at 170 MHz
divr: Some(PllRDiv::DIV2),
});
config.rcc.mux.adc12sel = mux::Adcsel::SYS;
config.rcc.sys = Sysclk::PLL1_R;
}
let mut p = embassy_stm32::init(config);
let mut adc = Adc::new(p.ADC1);
adc.set_sample_time(SampleTime::CYCLES247_5);
adc.set_differential(&mut p.PA0, true); //p:pa0,n:pa1
// can also use
// adc.set_differential_channel(1, true);
info!("adc initialized");
loop {
let measured = adc.blocking_read(&mut p.PA0);
info!("data: {}", measured);
Timer::after_millis(500).await;
}
}
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