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Diffstat (limited to '')
-rw-r--r-- | examples/async-task.rs | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/examples/async-task.rs b/examples/async-task.rs new file mode 100644 index 00000000..4d25ec44 --- /dev/null +++ b/examples/async-task.rs @@ -0,0 +1,61 @@ +#![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}; + use systick_monotonic::*; + + #[shared] + struct Shared {} + + #[local] + struct Local {} + + #[monotonic(binds = SysTick, default = true)] + type MyMono = Systick<100>; + + #[init] + fn init(cx: init::Context) -> (Shared, Local, init::Monotonics) { + hprintln!("init").unwrap(); + + normal_task::spawn().ok(); + async_task::spawn().ok(); + + ( + Shared {}, + Local {}, + init::Monotonics(Systick::new(cx.core.SYST, 12_000_000)), + ) + } + + #[idle] + 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] + fn normal_task(_cx: normal_task::Context) { + hprintln!("hello from normal").ok(); + } + + #[task] + async fn async_task(_cx: async_task::Context) { + hprintln!("hello from async").ok(); + + debug::exit(debug::EXIT_SUCCESS); + } +} |