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//! examples/mutlilock.rs
//!
//! The multi-lock feature example.
#![deny(unsafe_code)]
#![deny(warnings)]
#![no_main]
#![no_std]
use panic_semihosting as _;
#[rtic::app(device = lm3s6965)]
mod app {
use cortex_m_semihosting::{debug, hprintln};
use lm3s6965::Interrupt;
#[resources]
struct Resources {
#[init(0)]
shared1: u32,
#[init(0)]
shared2: u32,
#[init(0)]
shared3: u32,
}
#[init]
fn init(_: init::Context) -> init::LateResources {
rtic::pend(Interrupt::GPIOA);
init::LateResources {}
}
// when omitted priority is assumed to be `1`
#[task(binds = GPIOA, resources = [shared1, shared2, shared3])]
fn locks(c: locks::Context) {
let mut s1 = c.resources.shared1;
let mut s2 = c.resources.shared2;
let mut s3 = c.resources.shared3;
hprintln!("Multiple single locks").unwrap();
s1.lock(|s1| {
s2.lock(|s2| {
s3.lock(|s3| {
*s1 += 1;
*s2 += 1;
*s3 += 1;
hprintln!(
"Multiple single locks, s1: {}, s2: {}, s3: {}",
*s1,
*s2,
*s3
)
.unwrap();
})
})
});
hprintln!("Multilock!").unwrap();
(s1, s2, s3).lock(|s1, s2, s3| {
*s1 += 1;
*s2 += 1;
*s3 += 1;
hprintln!(
"Multiple single locks, s1: {}, s2: {}, s3: {}",
*s1,
*s2,
*s3
)
.unwrap();
});
debug::exit(debug::EXIT_SUCCESS);
}
}
|
