#![no_std]
#![no_main]

use esp32_hal::{ clock::ClockControl,
                 pac::Peripherals,
                 prelude::*,
                 timer::TimerGroup,
                 Rtc,
                 spi::{Spi, SpiMode},
                 gpio::IO,
                 };
use esp_backtrace as _;
use xtensa_lx_rt::entry;

#[entry]
fn main() -> ! {
    let peripherals = Peripherals::take().unwrap();
    let mut system = peripherals.DPORT.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);
    let mut wdt0 = timer_group0.wdt;
    let timer_group1 = TimerGroup::new(peripherals.TIMG1, &clocks);
    let mut wdt1 = timer_group1.wdt;


    rtc.rwdt.disable();
    wdt0.disable();
    wdt1.disable();

    let io = IO::new(peripherals.GPIO, peripherals.IO_MUX);

    let mut spi = Spi::new(
        peripherals.SPI2,
        io.pins.gpio18,
        io.pins.gpio23,
        io.pins.gpio19,
        io.pins.gpio5,
        100u32.kHz(),
        SpiMode::Mode0,
        &mut system.peripheral_clock_control,
        &clocks,
    );

    loop {}
}