//! examples/hardware.rs #![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 { #[task_local] #[init(0)] times: u32, } #[init] fn init(_: init::Context) -> (init::LateResources, init::Monotonics) { // Pends the UART0 interrupt but its handler won't run until *after* // `init` returns because interrupts are disabled rtic::pend(Interrupt::UART0); // equivalent to NVIC::pend hprintln!("init").unwrap(); (init::LateResources {}, init::Monotonics()) } #[idle] fn idle(_: idle::Context) -> ! { // interrupts are enabled again; the `UART0` handler runs at this point hprintln!("idle").unwrap(); rtic::pend(Interrupt::UART0); debug::exit(debug::EXIT_SUCCESS); loop { cortex_m::asm::nop(); } } #[task(binds = UART0, resources = [times])] fn uart0(cx: uart0::Context) { let times = cx.resources.times; // Safe access to local `static mut` variable *times += 1; hprintln!( "UART0 called {} time{}", *times, if *times > 1 { "s" } else { "" } ) .unwrap(); } }