From c631049efcadca8b07940c794cce2be58fa48444 Mon Sep 17 00:00:00 2001 From: Jorge Aparicio Date: Sat, 3 Nov 2018 17:02:41 +0100 Subject: v0.4.0 closes #32 closes #33 --- examples/periodic.rs | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 examples/periodic.rs (limited to 'examples/periodic.rs') diff --git a/examples/periodic.rs b/examples/periodic.rs new file mode 100644 index 0000000..0fb8bdf --- /dev/null +++ b/examples/periodic.rs @@ -0,0 +1,43 @@ +//! examples/periodic.rs + +#![deny(unsafe_code)] +#![deny(warnings)] +#![no_main] +#![no_std] + +extern crate panic_semihosting; + +use rtfm::{app, Instant}; + +macro_rules! println { + ($($tt:tt)*) => { + if let Ok(mut stdout) = cortex_m_semihosting::hio::hstdout() { + use core::fmt::Write; + + writeln!(stdout, $($tt)*).ok(); + } + }; +} + +const PERIOD: u32 = 8_000_000; + +// NOTE: does NOT work on QEMU! +#[app(device = lm3s6965)] +const APP: () = { + #[init(schedule = [foo])] + fn init() { + schedule.foo(Instant::now() + PERIOD.cycles()).unwrap(); + } + + #[task(schedule = [foo])] + fn foo() { + let now = Instant::now(); + println!("foo(scheduled = {:?}, now = {:?})", scheduled, now); + + schedule.foo(scheduled + PERIOD.cycles()).unwrap(); + } + + extern "C" { + fn UART0(); + } +}; -- cgit v1.2.3