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5b8e6a22ab
Fmt Correct syntax crate UI test fix Fix build script Cleanup More cleanup
57 lines
1.3 KiB
Rust
57 lines
1.3 KiB
Rust
//! examples/task.rs
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#![deny(unsafe_code)]
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#![deny(warnings)]
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#![no_main]
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#![no_std]
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use cortex_m_semihosting::{debug, hprintln};
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use panic_semihosting as _;
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#[rtic::app(device = lm3s6965)]
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mod app {
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#[init]
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fn init(_: init::Context) -> init::LateResources {
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foo::spawn().unwrap();
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init::LateResources {}
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}
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#[task]
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fn foo(_: foo::Context) {
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hprintln!("foo - start").unwrap();
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// spawns `bar` onto the task scheduler
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// `foo` and `bar` have the same priority so `bar` will not run until
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// after `foo` terminates
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bar::spawn().unwrap();
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hprintln!("foo - middle").unwrap();
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// spawns `baz` onto the task scheduler
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// `baz` has higher priority than `foo` so it immediately preempts `foo`
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baz::spawn().unwrap();
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hprintln!("foo - end").unwrap();
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}
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#[task]
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fn bar(_: bar::Context) {
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hprintln!("bar").unwrap();
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debug::exit(debug::EXIT_SUCCESS);
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}
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#[task(priority = 2)]
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fn baz(_: baz::Context) {
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hprintln!("baz").unwrap();
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}
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// RTIC requires that unused interrupts are declared in an extern block when
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// using software tasks; these free interrupts will be used to dispatch the
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// software tasks.
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extern "C" {
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fn SSI0();
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fn QEI0();
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}
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}
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