61 lines
1.5 KiB
Rust
61 lines
1.5 KiB
Rust
#![no_std]
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#![no_main]
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use defmt::*;
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use embassy_executor::Spawner;
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use embassy_stm32::adc::{Adc, AdcChannel as _, SampleTime};
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use embassy_stm32::Config;
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use embassy_time::Timer;
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use {defmt_rtt as _, panic_probe as _};
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static mut DMA_BUF: [u16; 2] = [0; 2];
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#[embassy_executor::main]
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async fn main(_spawner: Spawner) {
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let mut read_buffer = unsafe { &mut DMA_BUF[..] };
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let mut config = Config::default();
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{
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use embassy_stm32::rcc::*;
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config.rcc.pll = Some(Pll {
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source: PllSource::HSI,
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prediv: PllPreDiv::DIV4,
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mul: PllMul::MUL85,
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divp: None,
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divq: None,
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// Main system clock at 170 MHz
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divr: Some(PllRDiv::DIV2),
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});
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config.rcc.mux.adc12sel = mux::Adcsel::SYS;
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config.rcc.sys = Sysclk::PLL1_R;
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}
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let p = embassy_stm32::init(config);
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info!("Hello World!");
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let mut adc = Adc::new(p.ADC1);
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let mut dma = p.DMA1_CH1;
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let mut vrefint_channel = adc.enable_vrefint().degrade_adc();
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let mut pa0 = p.PA0.degrade_adc();
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loop {
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adc.read(
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&mut dma,
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[
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(&mut vrefint_channel, SampleTime::CYCLES247_5),
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(&mut pa0, SampleTime::CYCLES247_5),
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]
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.into_iter(),
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&mut read_buffer,
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)
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.await;
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let vrefint = read_buffer[0];
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let measured = read_buffer[1];
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info!("vrefint: {}", vrefint);
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info!("measured: {}", measured);
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Timer::after_millis(500).await;
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}
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}
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