#![no_std]
#![no_main]
use esp32c3_hal::{clock::ClockControl, pac::Peripherals, prelude::*, timer::TimerGroup, Rtc, IO};
use esp_backtrace as _;
use riscv_rt::entry;
#[entry]
fn main() -> ! {
// Take Peripherals, Initialize Clocks, and Create a Handle for Each
let peripherals = Peripherals::take().unwrap();
let system = peripherals.SYSTEM.split();
let clocks = ClockControl::boot_defaults(system.clock_control).freeze();
// Instantiate and Create Handles for the RTC and TIMG watchdog timers
let mut rtc = Rtc::new(peripherals.RTC_CNTL);
let timer_group0 = TimerGroup::new(peripherals.TIMG0, &clocks);
let mut wdt0 = timer_group0.wdt;
let timer_group1 = TimerGroup::new(peripherals.TIMG1, &clocks);
let mut wdt1 = timer_group1.wdt;
// Disable the RTC and TIMG watchdog timers
rtc.swd.disable();
rtc.rwdt.disable();
wdt0.disable();
wdt1.disable();
let io = IO::new(peripherals.GPIO, peripherals.IO_MUX);
let mut led = io.pins.gpio4.into_push_pull_output();
let mut timer0 = timer_group0.timer0;
led.set_low().unwrap();
let mut dur = 2000_u32.millis();
loop {
timer0.start(dur);
while timer0.wait() != Ok(()) {}
led.toggle().unwrap();
}
}