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