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#![no_main]
#![no_std]
#![feature(type_alias_impl_trait)]
use panic_semihosting as _;
// NOTES:
//
// - Async tasks cannot have `#[lock_free]` resources, as they can interleve and each async
// task can have a mutable reference stored.
// - Spawning an async task equates to it being polled once.
#[rtic::app(device = lm3s6965, dispatchers = [SSI0, UART0], peripherals = true)]
mod app {
use cortex_m_semihosting::{debug, hprintln};
#[shared]
struct Shared {
a: u32,
}
#[local]
struct Local {}
#[init]
fn init(cx: init::Context) -> (Shared, Local) {
hprintln!("init").unwrap();
async_task::spawn().unwrap();
async_task2::spawn().unwrap();
(Shared { a: 0 }, Local {})
}
#[idle(shared = [a])]
fn idle(_: idle::Context) -> ! {
// debug::exit(debug::EXIT_SUCCESS);
loop {
// hprintln!("idle");
cortex_m::asm::wfi(); // put the MCU in sleep mode until interrupt occurs
}
}
#[task(binds = UART1, shared = [a])]
fn hw_task(cx: hw_task::Context) {
let hw_task::SharedResources { a, .. } = cx.shared;
hprintln!("hello from hw").ok();
}
#[task(shared = [a])]
async fn async_task(cx: async_task::Context) {
let async_task::SharedResources { a, .. } = cx.shared;
hprintln!("hello from async").ok();
debug::exit(debug::EXIT_SUCCESS);
}
#[task(priority = 2, shared = [a])]
async fn async_task2(cx: async_task2::Context) {
let async_task2::SharedResources { a, .. } = cx.shared;
hprintln!("hello from async2").ok();
}
}
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