#![no_std]
#![no_main]

use esp_hal::clock::ClockControl;
use esp_hal::delay::Delay;
use esp_hal::gpio::IO;
use esp_hal::peripherals::Peripherals;
use esp_hal::prelude::*;

use panic_halt as _;

#[entry]
fn main() -> ! {
    let p = Peripherals::take();
    let sys = p.SYSTEM.split();
    let clocks = ClockControl::boot_defaults(sys.clock_control).freeze();

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

    let mut r = io.pins.gpio5.into_push_pull_output();
    let mut g = io.pins.gpio6.into_push_pull_output();
    let mut b = io.pins.gpio7.into_push_pull_output();

    let _btn = io.pins.gpio9.into_pull_up_input();

    let delay = Delay::new(&clocks);

    for [r_state, g_state, b_state] in [
        [true, false, false],
        [true, true, false],
        [false, true, false],
        [false, true, true],
        [false, false, true],
        [true, false, true],
    ]
    .iter()
    .cycle()
    {
        r.set_state(*r_state);
        g.set_state(*g_state);
        b.set_state(*b_state);

        delay.delay_millis(200u32);
    }

    loop {}
}