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//! This example shows TRNG usage
#![no_std]
#![no_main]
use defmt::*;
use embassy_executor::Spawner;
use embassy_rp::bind_interrupts;
use embassy_rp::gpio::{Level, Output};
use embassy_rp::peripherals::TRNG;
use embassy_rp::trng::Trng;
use embassy_time::Timer;
use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs {
TRNG_IRQ => embassy_rp::trng::InterruptHandler<TRNG>;
});
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let peripherals = embassy_rp::init(Default::default());
// Initialize the TRNG with default configuration
let mut trng = Trng::new(peripherals.TRNG, Irqs, embassy_rp::trng::Config::default());
// A buffer to collect random bytes in.
let mut randomness = [0u8; 58];
let mut led = Output::new(peripherals.PIN_25, Level::Low);
loop {
trng.fill_bytes(&mut randomness).await;
info!("Random bytes async {}", &randomness);
trng.blocking_fill_bytes(&mut randomness);
info!("Random bytes blocking {}", &randomness);
let random_u32 = trng.blocking_next_u32();
let random_u64 = trng.blocking_next_u64();
info!("Random u32 {} u64 {}", random_u32, random_u64);
// Random number of blinks between 0 and 31
let blinks = random_u32 % 32;
for _ in 0..blinks {
led.set_high();
Timer::after_millis(20).await;
led.set_low();
Timer::after_millis(20).await;
}
Timer::after_millis(1000).await;
}
}
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