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72 lines
1.4 KiB
Rust
72 lines
1.4 KiB
Rust
#![deny(warnings)]
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#![feature(const_fn)]
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#![feature(proc_macro)]
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#![no_std]
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#[macro_use(task)]
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extern crate cortex_m_rtfm as rtfm;
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extern crate stm32f103xx;
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use rtfm::{app, Resource, Threshold};
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app! {
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device: stm32f103xx,
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resources: {
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static STATE: bool = false;
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static MAX: u8 = 0;
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},
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tasks: {
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EXTI0: {
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enabled: true,
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priority: 1,
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resources: [MAX, STATE],
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},
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EXTI1: {
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enabled: true,
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priority: 2,
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resources: [STATE],
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},
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EXTI2: {
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enabled: true,
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priority: 16,
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resources: [MAX],
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},
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},
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}
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fn init(_p: init::Peripherals, _r: init::Resources) {}
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fn idle() -> ! {
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loop {}
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}
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task!(EXTI0, exti0);
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fn exti0(mut t: &mut Threshold, mut r: EXTI0::Resources) {
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// OK need to lock to access the resource
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if r.STATE.claim(&mut t, |state, _| **state) {}
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// OK can claim a resource with maximum ceiling
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r.MAX.claim_mut(&mut t, |max, _| **max += 1);
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}
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task!(EXTI1, exti1);
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fn exti1(mut t: &mut Threshold, r: EXTI1::Resources) {
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// ERROR no need to lock. Has direct access because priority == ceiling
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if (**r.STATE).claim(&mut t, |state, _| **state) {
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//~^ error no method named `claim` found for type
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}
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if **r.STATE {
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// OK
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}
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}
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task!(EXTI2, exti2);
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fn exti2(_t: &mut Threshold, _r: EXTI2::Resources) {}
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