#![no_std]
#![no_main]
use core::cell::RefCell;
use critical_section::Mutex;
use esp32_hal::{
clock::ClockControl,
interrupt,
peripherals::{self, Peripherals},
prelude::*,
Rtc,
Rwdt,
};
use esp_backtrace as _;
static RWDT: Mutex<RefCell<Option<Rwdt>>> = Mutex::new(RefCell::new(None));
#[entry]
fn main() -> ! {
let peripherals = Peripherals::take();
let system = peripherals.SYSTEM.split();
let _clocks = ClockControl::boot_defaults(system.clock_control).freeze();
let mut rtc = Rtc::new(peripherals.LPWR);
rtc.rwdt.start(2000u64.millis());
rtc.rwdt.listen();
critical_section::with(|cs| RWDT.borrow_ref_mut(cs).replace(rtc.rwdt));
interrupt::enable(
peripherals::Interrupt::RTC_CORE,
interrupt::Priority::Priority1,
)
.unwrap();
loop {}
}
#[interrupt]
fn RTC_CORE() {
critical_section::with(|cs| {
esp_println::println!("RWDT Interrupt");
let mut rwdt = RWDT.borrow_ref_mut(cs);
let rwdt = rwdt.as_mut().unwrap();
rwdt.clear_interrupt();
esp_println::println!("Restarting in 5 seconds...");
rwdt.start(5000u64.millis());
rwdt.unlisten();
});
}