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-rw-r--r--examples/schedule.rs44
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();
}
}