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//! examples/resource.rs
#![deny(unsafe_code)]
#![deny(warnings)]
#![no_main]
#![no_std]
use cortex_m_semihosting::{debug, hprintln};
use lm3s6965::Interrupt;
use panic_semihosting as _;
#[rtic::app(device = lm3s6965)]
mod app {
#[resources]
struct Resources {
// A resource
#[init(0)]
shared: u32,
}
#[init]
fn init(_: init::Context) {
rtic::pend(Interrupt::UART0);
rtic::pend(Interrupt::UART1);
}
// `shared` cannot be accessed from this context
#[idle]
fn idle(_cx: idle::Context) -> ! {
debug::exit(debug::EXIT_SUCCESS);
// error: no `resources` field in `idle::Context`
// _cx.resources.shared += 1;
loop {
cortex_m::asm::nop();
}
}
// `shared` can be accessed from this context
#[task(binds = UART0, resources = [shared])]
fn uart0(cx: uart0::Context) {
let shared: &mut u32 = cx.resources.shared;
*shared += 1;
hprintln!("UART0: shared = {}", shared).unwrap();
}
// `shared` can be accessed from this context
#[task(binds = UART1, resources = [shared])]
fn uart1(cx: uart1::Context) {
*cx.resources.shared += 1;
hprintln!("UART1: shared = {}", cx.resources.shared).unwrap();
}
}
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