cortex-m-rtic 0.6.0-alpha.1

Real-Time Interrupt-driven Concurrency (RTIC): a concurrency framework for building real-time systems
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

//! examples/task.rs

#![deny(unsafe_code)]
#![deny(warnings)]
#![no_main]
#![no_std]

use panic_semihosting as _;

#[rtic::app(device = lm3s6965, dispatchers = [SSI0, QEI0])]
mod app {
    use cortex_m_semihosting::{debug, hprintln};

    #[init]
    fn init(_: init::Context) -> (init::LateResources, init::Monotonics) {
        foo::spawn().unwrap();

        (init::LateResources {}, init::Monotonics())
    }

    #[task]
    fn foo(_: foo::Context) {
        hprintln!("foo - start").unwrap();

        // spawns `bar` onto the task scheduler
        // `foo` and `bar` have the same priority so `bar` will not run until
        // after `foo` terminates
        bar::spawn().unwrap();

        hprintln!("foo - middle").unwrap();

        // spawns `baz` onto the task scheduler
        // `baz` has higher priority than `foo` so it immediately preempts `foo`
        baz::spawn().unwrap();

        hprintln!("foo - end").unwrap();
    }

    #[task]
    fn bar(_: bar::Context) {
        hprintln!("bar").unwrap();

        debug::exit(debug::EXIT_SUCCESS);
    }

    #[task(priority = 2)]
    fn baz(_: baz::Context) {
        hprintln!("baz").unwrap();
    }
}