rtic/examples/cfg.rs
2020-06-11 17:18:29 +00:00

64 lines
1.3 KiB
Rust

//! examples/cfg.rs
#![deny(unsafe_code)]
#![deny(warnings)]
#![no_main]
#![no_std]
use cortex_m_semihosting::debug;
#[cfg(debug_assertions)]
use cortex_m_semihosting::hprintln;
use panic_semihosting as _;
#[rtic::app(device = lm3s6965)]
const APP: () = {
struct Resources {
#[cfg(debug_assertions)] // <- `true` when using the `dev` profile
#[init(0)]
count: u32,
}
#[init(spawn = [foo])]
fn init(cx: init::Context) {
cx.spawn.foo().unwrap();
cx.spawn.foo().unwrap();
}
#[idle]
fn idle(_: idle::Context) -> ! {
debug::exit(debug::EXIT_SUCCESS);
loop {}
}
#[task(capacity = 2, resources = [count], spawn = [log])]
fn foo(_cx: foo::Context) {
#[cfg(debug_assertions)]
{
*_cx.resources.count += 1;
_cx.spawn.log(*_cx.resources.count).unwrap();
}
// this wouldn't compile in `release` mode
// *_cx.resources.count += 1;
// ..
}
#[cfg(debug_assertions)]
#[task(capacity = 2)]
fn log(_: log::Context, n: u32) {
hprintln!(
"foo has been called {} time{}",
n,
if n == 1 { "" } else { "s" }
)
.ok();
}
extern "C" {
fn UART0();
fn UART1();
}
};