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#![no_std]
#![no_main]
use defmt::*;
use embassy_executor::Spawner;
use embassy_stm32::adc::{Adc, AdcChannel as _, SampleTime};
use embassy_stm32::Config;
use embassy_time::Timer;
use {defmt_rtt as _, panic_probe as _};
static mut DMA_BUF: [u16; 2] = [0; 2];
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let mut read_buffer = unsafe { &mut DMA_BUF[..] };
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 p = embassy_stm32::init(config);
info!("Hello World!");
let mut adc = Adc::new(p.ADC1);
let mut dma = p.DMA1_CH1;
let mut vrefint_channel = adc.enable_vrefint().degrade_adc();
let mut pa0 = p.PA0.degrade_adc();
loop {
adc.read(
dma.reborrow(),
[
(&mut vrefint_channel, SampleTime::CYCLES247_5),
(&mut pa0, SampleTime::CYCLES247_5),
]
.into_iter(),
&mut read_buffer,
)
.await;
let vrefint = read_buffer[0];
let measured = read_buffer[1];
info!("vrefint: {}", vrefint);
info!("measured: {}", measured);
Timer::after_millis(500).await;
}
}
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