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#![no_std]
#![no_main]
use defmt::*;
use embassy_executor::Spawner;
use embassy_stm32::rcc::{Pll, PllMul, PllPreDiv, PllQDiv, PllRDiv, PllSource, Sysclk};
use embassy_stm32::rng::Rng;
use embassy_stm32::{bind_interrupts, peripherals, rng, Config};
use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs {
RNG => rng::InterruptHandler<peripherals::RNG>;
});
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let mut config = Config::default();
config.rcc.sys = Sysclk::PLL1_R;
config.rcc.hsi = true;
config.rcc.pll = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV1,
mul: PllMul::MUL18,
divp: None,
divq: Some(PllQDiv::DIV6), // 48Mhz (16 / 1 * 18 / 6)
divr: Some(PllRDiv::DIV4), // sysclk 72Mhz clock (16 / 1 * 18 / 4)
});
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);
}
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