#![no_std] #![no_main] #![feature(type_alias_impl_trait)] use defmt::*; use embassy_executor::Spawner; use embassy_stm32::rng::{self, Rng}; use embassy_stm32::time::Hertz; use embassy_stm32::{bind_interrupts, peripherals}; use {defmt_rtt as _, panic_probe as _}; bind_interrupts!(struct Irqs{ RNG => rng::InterruptHandler; }); #[embassy_executor::main] async fn main(_spawner: Spawner) { let mut config = embassy_stm32::Config::default(); { use embassy_stm32::rcc::*; config.rcc.hse = Some(Hse { freq: Hertz(32_000_000), mode: HseMode::Bypass, prescaler: HsePrescaler::DIV1, }); config.rcc.mux = ClockSrc::PLL1_R; config.rcc.pll = Some(Pll { source: PLLSource::HSE, prediv: PllPreDiv::DIV2, mul: PllMul::MUL6, divp: None, divq: Some(PllQDiv::DIV2), // PLL1_Q clock (32 / 2 * 6 / 2), used for RNG divr: Some(PllRDiv::DIV2), // sysclk 48Mhz clock (32 / 2 * 6 / 2) }); } let p = embassy_stm32::init(config); info!("Hello World!"); let mut rng = Rng::new(p.RNG, Irqs); let mut buf = [0u8; 16]; unwrap!(rng.async_fill_bytes(&mut buf).await); info!("random bytes: {:02x}", buf); loop {} }