lib.rs

#![no_std]

use core::sync::atomic::{AtomicUsize, Ordering};

use defmt_rtt as _; // global logger
use panic_probe as _;
use stm32f0xx_hal as _; // memory layout // panic handler

pub mod ps2;
pub mod speaker;
pub mod spi;

// same panicking *behavior* as `panic-probe` but doesn't print a panic message
// this prevents the panic message being printed *twice* when `defmt::panic` is invoked
#[defmt::panic_handler]
fn panic() -> ! {
	cortex_m::asm::udf()
}

static COUNT: AtomicUsize = AtomicUsize::new(0);
defmt::timestamp!("{=usize}", {
	// NOTE(no-CAS) `timestamps` runs with interrupts disabled
	let n = COUNT.load(Ordering::Relaxed);
	COUNT.store(n + 1, Ordering::Relaxed);
	n
});

/// Terminates the application and makes `probe-rs` exit with exit-code = 0
pub fn exit() -> ! {
	loop {
		cortex_m::asm::bkpt();
	}
}