36 lines
883 B
Rust
36 lines
883 B
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::rng::{self, Rng};
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use embassy_stm32::{bind_interrupts, pac, peripherals};
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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 = embassy_stm32::Config::default();
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config.rcc.mux = embassy_stm32::rcc::ClockSrc::HSE32;
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config.rcc.rtc_mux = embassy_stm32::rcc::RtcClockSource::LSI;
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let p = embassy_stm32::init(config);
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pac::RCC.ccipr().modify(|w| {
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w.set_rngsel(0b01);
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});
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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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loop {}
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}
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