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#![no_std]
#![no_main]
use defmt::info;
use embassy_executor::Spawner;
use embassy_stm32::adc::{Adc, SampleTime};
use embassy_stm32::opamp::OpAmp;
use embassy_stm32::peripherals::ADC2;
use embassy_stm32::time::mhz;
use embassy_stm32::{adc, bind_interrupts, Config};
use embassy_time::Timer;
use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs {
ADC1_2 => adc::InterruptHandler<ADC2>;
});
#[embassy_executor::main]
async fn main(_spawner: Spawner) -> ! {
let mut config = Config::default();
{
use embassy_stm32::rcc::*;
config.rcc.hse = Some(Hse {
freq: mhz(8),
mode: HseMode::Bypass,
});
config.rcc.pll = Some(Pll {
src: PllSource::HSE,
prediv: PllPreDiv::DIV1,
mul: PllMul::MUL9,
});
config.rcc.sys = Sysclk::PLL1_P;
config.rcc.ahb_pre = AHBPrescaler::DIV1;
config.rcc.apb1_pre = APBPrescaler::DIV2;
config.rcc.apb2_pre = APBPrescaler::DIV1;
config.rcc.adc = AdcClockSource::Pll(AdcPllPrescaler::DIV1);
}
let mut p = embassy_stm32::init(config);
info!("create adc...");
let mut adc = Adc::new(p.ADC2, Irqs);
let mut opamp = OpAmp::new(p.OPAMP2);
adc.set_sample_time(SampleTime::CYCLES601_5);
info!("enable vrefint...");
let mut vrefint = adc.enable_vref();
let mut temperature = adc.enable_temperature();
let mut buffer = opamp.buffer_ext(p.PA7.reborrow(), p.PA6.reborrow());
loop {
let vref = adc.read(&mut vrefint).await;
info!("read vref: {} (should be {})", vref, vrefint.value());
let temp = adc.read(&mut temperature).await;
info!("read temperature: {}", temp);
let buffer = adc.read(&mut buffer).await;
info!("read buffer: {}", buffer);
let pin_mv = (buffer as u32 * vrefint.value() as u32 / vref as u32) * 3300 / 4095;
info!("computed pin mv: {}", pin_mv);
Timer::after_millis(500).await;
}
}
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