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Diffstat (limited to 'examples/periodic-at.no_rs')
-rw-r--r-- | examples/periodic-at.no_rs | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/examples/periodic-at.no_rs b/examples/periodic-at.no_rs new file mode 100644 index 00000000..ca68ed5e --- /dev/null +++ b/examples/periodic-at.no_rs @@ -0,0 +1,49 @@ +//! examples/periodic-at.rs + +#![deny(unsafe_code)] +#![deny(warnings)] +#![no_main] +#![no_std] + +use panic_semihosting as _; + +#[rtic::app(device = lm3s6965, dispatchers = [SSI0])] +mod app { + use cortex_m_semihosting::{debug, hprintln}; + use systick_monotonic::*; + + #[monotonic(binds = SysTick, default = true)] + type MyMono = Systick<100>; // 100 Hz / 10 ms granularity + + #[shared] + struct Shared {} + + #[local] + struct Local {} + + #[init] + fn init(cx: init::Context) -> (Shared, Local, init::Monotonics) { + let systick = cx.core.SYST; + + // Initialize the monotonic (SysTick rate in QEMU is 12 MHz) + let mut mono = Systick::new(systick, 12_000_000); + + foo::spawn_after(1.secs(), mono.now()).unwrap(); + + (Shared {}, Local {}, init::Monotonics(mono)) + } + + #[task(local = [cnt: u32 = 0])] + fn foo(cx: foo::Context, instant: fugit::TimerInstantU64<100>) { + hprintln!("foo {:?}", instant).ok(); + *cx.local.cnt += 1; + + if *cx.local.cnt == 4 { + debug::exit(debug::EXIT_SUCCESS); // Exit QEMU simulator + } + + // Periodic every 100 milliseconds + let next_instant = instant + 100.millis(); + foo::spawn_at(next_instant, next_instant).unwrap(); + } +} |