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