#![no_std]
#![no_main]

use esp_backtrace as _;
use esp_println::println;
use hal::{clock::ClockControl, peripherals::Peripherals, prelude::*, timer::TimerGroup, Rtc,IO}; 
#[entry]
fn main() -> ! {
    let peripherals = Peripherals::take();
    let mut system = peripherals.SYSTEM.split();
    let clocks = ClockControl::boot_defaults(system.clock_control).freeze();

    // Disable the RTC and TIMG watchdog timers
    let mut rtc = Rtc::new(peripherals.RTC_CNTL);
    let timer_group0 = TimerGroup::new(
        peripherals.TIMG0,
        &clocks,
        &mut system.peripheral_clock_control,
    );
    let mut wdt0 = timer_group0.wdt;
    let timer_group1 = TimerGroup::new(
        peripherals.TIMG1,
        &clocks,
        &mut system.peripheral_clock_control,
    );
    let mut wdt1 = timer_group1.wdt;
    rtc.swd.disable();
    rtc.rwdt.disable();
    wdt0.disable();
    wdt1.disable();
    println!("Hello world!");

   // Set GPIO7 as an output, and set its state high initially.
   let io = IO::new(peripherals.GPIO, peripherals.IO_MUX);
   let mut led = io.pins.gpio7.into_push_pull_output();
   let button = io.pins.gpio8.into_pull_up_input();

   loop {
       if button.is_high().unwrap() {
           led.set_high().unwrap();
       } else {
           led.set_low().unwrap();
       }
   }
}