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#![deny(warnings)]
#![feature(proc_macro)]
#![feature(proc_macro_gen)]
#![no_main]
#![no_std]
#[macro_use]
extern crate cortex_m;
#[macro_use]
extern crate cortex_m_rt as rt;
extern crate cortex_m_rtfm as rtfm;
extern crate panic_abort;
extern crate stm32f103xx;
use cortex_m::peripheral::{DWT, ITM};
use rt::ExceptionFrame;
use rtfm::app;
app! {
device: stm32f103xx,
resources: {
static ITM: ITM;
},
free_interrupts: [EXTI1],
tasks: {
exti0: {
interrupt: EXTI0,
schedule_after: [a],
resources: [ITM],
},
a: {
resources: [ITM],
},
},
}
const S: u32 = 8_000_000;
#[inline(always)]
fn init(ctxt: init::Context) -> init::LateResources {
rtfm::_impl::trigger(stm32f103xx::Interrupt::EXTI0);
init::LateResources { ITM: ctxt.core.ITM }
}
fn exti0(mut ctxt: exti0::Context) {
let now = DWT::get_cycle_count();
iprintln!(
&mut ctxt.resources.ITM.stim[0],
"exti0(st={}, now={})",
ctxt.start_time,
now
);
let t = &mut ctxt.priority;
ctxt.tasks.a.schedule_after(t, 1 * S).ok();
}
fn a(ctxt: a::Context) {
let now = DWT::get_cycle_count();
iprintln!(
&mut ctxt.resources.ITM.stim[0],
"a(st={}, now={})",
ctxt.scheduled_time,
now
);
}
exception!(HardFault, hard_fault);
#[inline(always)]
fn hard_fault(ef: &ExceptionFrame) -> ! {
panic!("HardFault at {:#?}", ef);
}
exception!(*, default_handler);
#[inline(always)]
fn default_handler(irqn: i16) {
panic!("Unhandled exception (IRQn = {})", irqn);
}
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