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