rtic/examples/message.rs

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//! examples/message.rs
#![deny(unsafe_code)]
#![deny(warnings)]
#![no_main]
#![no_std]
use panic_semihosting as _;
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#[rtic::app(device = lm3s6965, dispatchers = [SSI0])]
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mod app {
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use cortex_m_semihosting::{debug, hprintln};
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#[shared]
struct Shared {}
#[local]
struct Local {}
#[init]
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fn init(_: init::Context) -> (Shared, Local, init::Monotonics) {
foo::spawn(/* no message */).unwrap();
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(Shared {}, Local {}, init::Monotonics())
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}
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#[task(local = [count: u32 = 0])]
fn foo(cx: foo::Context) {
hprintln!("foo").unwrap();
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bar::spawn(*cx.local.count).unwrap();
*cx.local.count += 1;
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}
#[task]
fn bar(_: bar::Context, x: u32) {
hprintln!("bar({})", x).unwrap();
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baz::spawn(x + 1, x + 2).unwrap();
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}
#[task]
fn baz(_: baz::Context, x: u32, y: u32) {
hprintln!("baz({}, {})", x, y).unwrap();
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if x + y > 4 {
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debug::exit(debug::EXIT_SUCCESS); // Exit QEMU simulator
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}
foo::spawn().unwrap();
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}
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}