embedded-trainings-2020/down-the-stack/apps/src/lib.rs

#![no_std]
// ⚠️ ⚠️ ⚠️ Don't change this file! ⚠️ ⚠️ ⚠️
use panic_probe as _;

// 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()
}