rtic/examples/resource.rs
2019-07-10 22:42:44 +02:00

51 lines
1.1 KiB
Rust

//! 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 _;
#[rtfm::app(device = lm3s6965)]
const APP: () = {
struct Resources {
// A resource
#[init(0)]
shared: u32,
}
#[init]
fn init(_: init::Context) {
rtfm::pend(Interrupt::UART0);
rtfm::pend(Interrupt::UART1);
}
#[idle]
fn idle(_: idle::Context) -> ! {
debug::exit(debug::EXIT_SUCCESS);
// error: `shared` can't be accessed from this context
// shared += 1;
loop {}
}
// `shared` can be access from this context
#[task(binds = UART0, resources = [shared])]
fn uart0(c: uart0::Context) {
*c.resources.shared += 1;
hprintln!("UART0: shared = {}", c.resources.shared).unwrap();
}
// `shared` can be access from this context
#[task(binds = UART1, resources = [shared])]
fn uart1(c: uart1::Context) {
*c.resources.shared += 1;
hprintln!("UART1: shared = {}", c.resources.shared).unwrap();
}
};