39 lines
1.1 KiB
Rust
39 lines
1.1 KiB
Rust
#![no_std]
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#![no_main]
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#![feature(type_alias_impl_trait)]
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use defmt::*;
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use embassy_executor::Spawner;
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use embassy_stm32::rcc::{ClockSrc, Pll, PllMul, PllPreDiv, PllQDiv, PllRDiv, PllSource};
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use embassy_stm32::rng::Rng;
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use embassy_stm32::{bind_interrupts, peripherals, rng, Config};
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use {defmt_rtt as _, panic_probe as _};
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bind_interrupts!(struct Irqs {
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RNG => rng::InterruptHandler<peripherals::RNG>;
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});
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#[embassy_executor::main]
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async fn main(_spawner: Spawner) {
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let mut config = Config::default();
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config.rcc.mux = ClockSrc::PLL1_R;
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config.rcc.hsi = true;
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config.rcc.pll = Some(Pll {
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source: PllSource::HSI,
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prediv: PllPreDiv::DIV1,
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mul: PllMul::MUL18,
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divp: None,
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divq: Some(PllQDiv::DIV6), // 48Mhz (16 / 1 * 18 / 6)
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divr: Some(PllRDiv::DIV4), // sysclk 72Mhz clock (16 / 1 * 18 / 4)
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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 rng = Rng::new(p.RNG, Irqs);
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let mut buf = [0u8; 16];
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unwrap!(rng.async_fill_bytes(&mut buf).await);
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info!("random bytes: {:02x}", buf);
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}
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