rtic/examples/t-resource.rs

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//! [compile-pass] Check code generation of resources
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#![deny(unsafe_code)]
#![deny(warnings)]
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#![no_main]
#![no_std]
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use panic_semihosting as _;
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#[rtic::app(device = lm3s6965)]
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mod app {
#[resources]
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struct Resources {
#[init(0)]
o1: u32, // init
#[init(0)]
o2: u32, // idle
#[init(0)]
o3: u32, // EXTI0
#[init(0)]
o4: u32, // idle
#[init(0)]
o5: u32, // EXTI1
#[init(0)]
o6: u32, // init
#[init(0)]
s1: u32, // idle & uart0
#[init(0)]
s2: u32, // uart0 & uart1
#[init(0)]
s3: u32, // idle & uart0
}
#[init]
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fn init(_: init::Context) -> (init::LateResources, init::Monotonics) {
(init::LateResources {}, init::Monotonics())
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}
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#[idle(resources = [o2, &o4, s1, &s3])]
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fn idle(mut c: idle::Context) -> ! {
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// owned by `idle` == `&'static mut`
let _: resources::o2 = c.resources.o2;
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// owned by `idle` == `&'static` if read-only
let _: &u32 = c.resources.o4;
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// shared with `idle` == `Mutex`
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c.resources.s1.lock(|_| {});
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// `&` if read-only
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let _: &u32 = c.resources.s3;
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loop {
cortex_m::asm::nop();
}
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}
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#[task(binds = UART0, resources = [o3, s1, s2, &s3])]
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fn uart0(c: uart0::Context) {
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// owned by interrupt == `&mut`
let _: resources::o3 = c.resources.o3;
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// no `Mutex` proxy when access from highest priority task
let _: resources::s1 = c.resources.s1;
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// no `Mutex` proxy when co-owned by cooperative (same priority) tasks
let _: resources::s2 = c.resources.s2;
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// `&` if read-only
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let _: &u32 = c.resources.s3;
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}
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#[task(binds = UART1, resources = [s2, &o5])]
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fn uart1(c: uart1::Context) {
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// owned by interrupt == `&` if read-only
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let _: &u32 = c.resources.o5;
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// no `Mutex` proxy when co-owned by cooperative (same priority) tasks
let _: resources::s2 = c.resources.s2;
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}
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}