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//! examples/destructure.rs
#![deny(unsafe_code)]
#![deny(warnings)]
#![no_main]
#![no_std]
#![feature(type_alias_impl_trait)]
use panic_semihosting as _;
#[rtic::app(device = lm3s6965, dispatchers = [UART0])]
mod app {
use cortex_m_semihosting::{debug, hprintln};
#[shared]
struct Shared {
a: u32,
b: u32,
c: u32,
}
#[local]
struct Local {}
#[init]
fn init(_: init::Context) -> (Shared, Local) {
foo::spawn().unwrap();
bar::spawn().unwrap();
(Shared { a: 0, b: 1, c: 2 }, Local {})
}
#[idle]
fn idle(_: idle::Context) -> ! {
debug::exit(debug::EXIT_SUCCESS); // Exit QEMU simulator
loop {}
}
// Direct destructure
#[task(shared = [&a, &b, &c])]
async fn foo(cx: foo::Context) {
let a = cx.shared.a;
let b = cx.shared.b;
let c = cx.shared.c;
hprintln!("foo: a = {}, b = {}, c = {}", a, b, c).unwrap();
}
// De-structure-ing syntax
#[task(shared = [&a, &b, &c])]
async fn bar(cx: bar::Context) {
let bar::SharedResources { a, b, c, .. } = cx.shared;
hprintln!("bar: a = {}, b = {}, c = {}", a, b, c).unwrap();
}
}
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