#![no_std]
#![no_main]

use core::io;

use esp32c3_hal::{clock::clockControl, pac::Peripherals,prelude::*,timer::TimerGroup, Rtc, IO};
use esp_backtrace as _;
use esp_hal::peripheral;
use riscv_rt::entry;
use xtensa_lx_rt::exception::ExceptionFrame;

#[entry]
fn main() -> ! {
    let peripherals = Peripherals::take().unwrap();
    let mut system = peripherals.SYSTEM.split();
    let clocks = ClockControl::boot_defaults(system.clocks_config());
    let mut rtc = Rtc::new(peripherals.RTC_CNTL);
    let mut timer_group0 = TimerGroup::new(peripherals.TIMG0, &clocks);
    let mut wdt0 = timer_group0.wdt;wdto.disable();
    let io = IO::new(peripherals.GPIO,peripherals.IO_MUX);
    let mut led = io.gpio2.into_push_pull_output();

    loop {
        led.set_high().unwrap();
        timer_group0.timer0.start(500_000u64);
        nb::block!(timer_group0.timer0.wait()).unwrap();
        led.set_low().unwrap();
        timer_group0.timer0.start(500_000u64);
        nb::block!(timer_group0.timer0.wait()).unwrap();
    }
}

#[exception]
fn default_handler(_frame: &ExceptionFrame) -> ! {
    loop {}
}