diff --git a/examples/stm32u5/src/bin/adc.rs b/examples/stm32u5/src/bin/adc.rs new file mode 100644 index 000000000..f97facf9e --- /dev/null +++ b/examples/stm32u5/src/bin/adc.rs @@ -0,0 +1,69 @@ +#![no_std] +#![no_main] + + +use defmt::{*}; +use defmt_rtt as _; + +use embassy_stm32::adc; +use embassy_stm32::adc::adc4; +use panic_probe as _; + + +#[embassy_executor::main] +async fn main(spawner: embassy_executor::Spawner) { + let mut config = embassy_stm32::Config::default(); + { + use embassy_stm32::rcc::*; + config.rcc.hsi = true; + + config.rcc.pll1 = Some(Pll { + source: PllSource::HSI, // 16 MHz + prediv: PllPreDiv::DIV1, // 16 MHz + mul: PllMul::MUL10, // 160 MHz + divp: Some(PllDiv::DIV1), // don't care + divq: Some(PllDiv::DIV1), // don't care + divr: Some(PllDiv::DIV1), // 160 MHz + }); + + config.rcc.sys = Sysclk::PLL1_R; + config.rcc.voltage_range = VoltageScale::RANGE1; + config.rcc.hsi48 = Some(Hsi48Config { sync_from_usb: true }); // needed for USB + config.rcc.mux.iclksel = mux::Iclksel::HSI48; // USB uses ICLK + + } + + let p = embassy_stm32::init(config); + info!("Hello World!"); + + let mut adc = adc::Adc::new(p.ADC1); + let mut adc_pin = p.PA3; + adc.set_resolution(adc::Resolution::BITS14); + adc.set_averaging(adc::Averaging::Samples1024); + adc.set_sample_time(adc::SampleTime::CYCLES1_5); + + let mut adc2 = adc::Adc::new(p.ADC2); + let mut adc_pin2 = p.PA5; + adc2.set_resolution(adc::Resolution::BITS14); + adc2.set_averaging(adc::Averaging::Samples1024); + adc2.set_sample_time(adc::SampleTime::CYCLES1_5); + + let mut adc4 = adc4::Adc4::new(p.ADC4); + let mut adc_pin4 = p.PD11; + adc4.set_resolution(adc4::Resolution::BITS12); + adc4.set_averaging(adc4::Averaging::Samples256); + adc4.set_sample_time(adc4::SampleTime::CYCLES1_5); + + loop { + embassy_time::Timer::after_millis(100).await; + let raw :u16 = adc.blocking_read(&mut adc_pin); + let max = adc::resolution_to_max_count(adc::Resolution::BITS14); + let volt: f32 = 3.3 * raw as f32 / max as f32; + info!("Read ADC1 {}", volt); + + let raw4 :u16 = adc4.blocking_read(&mut adc_pin4); + let max4 = adc4::resolution_to_max_count(adc4::Resolution::BITS12); + let volt4: f32 = 3.3 * raw4 as f32 / max4 as f32; + info!("Read ADC4 {}", volt4); + } +} \ No newline at end of file