rtic/examples/message.rs
2020-09-25 14:29:34 +00:00

52 lines
1.1 KiB
Rust

//! examples/message.rs
#![deny(unsafe_code)]
#![deny(warnings)]
#![no_main]
#![no_std]
use cortex_m_semihosting::{debug, hprintln};
use panic_semihosting as _;
#[rtic::app(device = lm3s6965)]
mod app {
#[init(spawn = [foo])]
fn init(c: init::Context) {
c.spawn.foo(/* no message */).unwrap();
}
#[task(spawn = [bar])]
fn foo(c: foo::Context) {
static mut COUNT: u32 = 0;
hprintln!("foo").unwrap();
c.spawn.bar(*COUNT).unwrap();
*COUNT += 1;
}
#[task(spawn = [baz])]
fn bar(c: bar::Context, x: u32) {
hprintln!("bar({})", x).unwrap();
c.spawn.baz(x + 1, x + 2).unwrap();
}
#[task(spawn = [foo])]
fn baz(c: baz::Context, x: u32, y: u32) {
hprintln!("baz({}, {})", x, y).unwrap();
if x + y > 4 {
debug::exit(debug::EXIT_SUCCESS);
}
c.spawn.foo().unwrap();
}
// RTIC requires that unused interrupts are declared in an extern block when
// using software tasks; these free interrupts will be used to dispatch the
// software tasks.
extern "C" {
fn SSI0();
}
}