diff options
Diffstat (limited to 'examples/schedule.rs')
-rw-r--r-- | examples/schedule.rs | 44 |
1 files changed, 23 insertions, 21 deletions
diff --git a/examples/schedule.rs b/examples/schedule.rs index 5f73c500..d6d44998 100644 --- a/examples/schedule.rs +++ b/examples/schedule.rs @@ -5,45 +5,47 @@ #![no_main] #![no_std] -use panic_halt as _; +use panic_semihosting as _; // NOTE: does NOT work on QEMU! -#[rtic::app(device = lm3s6965, monotonic = rtic::cyccnt::CYCCNT, dispatchers = [SSI0])] +#[rtic::app(device = lm3s6965, dispatchers = [SSI0])] mod app { - use cortex_m::peripheral::DWT; use cortex_m_semihosting::hprintln; - use rtic::cyccnt::{Instant, U32Ext as _}; + use dwt_systick_monotonic::{ + consts::{U0, U8}, + DwtSystick, + }; + use rtic::time::duration::Seconds; + + #[monotonic(binds = SysTick, default = true)] + type MyMono = DwtSystick<U8, U0, U0>; // 8 MHz #[init()] - fn init(mut cx: init::Context) -> init::LateResources { - // Initialize (enable) the monotonic timer (CYCCNT) - cx.core.DCB.enable_trace(); - // required on Cortex-M7 devices that software lock the DWT (e.g. STM32F7) - DWT::unlock(); - cx.core.DWT.enable_cycle_counter(); + fn init(cx: init::Context) -> (init::LateResources, init::Monotonics) { + let mut dcb = cx.core.DCB; + let dwt = cx.core.DWT; + let systick = cx.core.SYST; - // semantically, the monotonic timer is frozen at time "zero" during `init` - // NOTE do *not* call `Instant::now` in this context; it will return a nonsense value - let now = cx.start; // the start time of the system + let mono = DwtSystick::new(&mut dcb, dwt, systick, 8_000_000); - hprintln!("init @ {:?}", now).unwrap(); + hprintln!("init").unwrap(); - // Schedule `foo` to run 8e6 cycles (clock cycles) in the future - foo::schedule(now + 8_000_000.cycles()).unwrap(); + // Schedule `foo` to run 1 second in the future + foo::spawn_after(Seconds(1_u32)).unwrap(); - // Schedule `bar` to run 4e6 cycles in the future - bar::schedule(now + 4_000_000.cycles()).unwrap(); + // Schedule `bar` to run 2 seconds in the future + bar::spawn_after(Seconds(2_u32)).unwrap(); - init::LateResources {} + (init::LateResources {}, init::Monotonics(mono)) } #[task] fn foo(_: foo::Context) { - hprintln!("foo @ {:?}", Instant::now()).unwrap(); + hprintln!("foo").unwrap(); } #[task] fn bar(_: bar::Context) { - hprintln!("bar @ {:?}", Instant::now()).unwrap(); + hprintln!("bar").unwrap(); } } |