#![no_std]
#![no_main]
#![deny(
    clippy::mem_forget,
    reason = "mem::forget is generally not safe to do with esp_hal types, especially those \
    holding buffers for the duration of a data transfer."
)]

use defmt::{info, println};
use embassy_executor::Spawner;
use embassy_time::{Duration, Timer};
use esp_hal::clock::CpuClock;
use esp_hal::gpio::Level;
use esp_hal::rmt::{PulseCode, Rmt, TxChannelAsync, TxChannelConfig, TxChannelCreatorAsync};
use esp_hal::time::Rate;
use esp_hal::timer::systimer::SystemTimer;
use panic_rtt_target as _;

extern crate alloc;

    #[esp_hal_embassy::main]
async fn main(spawner: Spawner) {
    // generator version: 0.3.1

    rtt_target::rtt_init_defmt!();

    let config = esp_hal::Config::default().with_cpu_clock(CpuClock::max());
    let peripherals = esp_hal::init(config);

    esp_alloc::heap_allocator!(size: 72 * 1024);

    let timer0 = SystemTimer::new(peripherals.SYSTIMER);
    esp_hal_embassy::init(timer0.alarm0);

    info!("Embassy initialized!");

    let output = peripherals.GPIO4;
    let rate = Rate::from_mhz(80);
    let carrier = Rate::from_hz(32768);
    let rmt = Rmt::new(peripherals.RMT, rate)
        .expect("RMT Failed to new")
        .into_async();
    println!("Carrier: {}", (rate / carrier));
    let mut channel = rmt
        .channel0
        .configure(
            output,
            TxChannelConfig::default()
                .with_carrier_high((rate / carrier / 2).try_into().unwrap()) // half the duty cycle high
                .with_carrier_low((rate / carrier / 2).try_into().unwrap()) // and the other half to low
                .with_carrier_modulation(true) // and enable carrier
                .into(),
        )
        .unwrap();
    // setup a test dataset
    let mut data = [<u32 as PulseCode>::new(Level::High, 3000, Level::Low, 1000); 20];

    // TODO: Spawn some tasks
    let _ = spawner;

    loop {
        info!("Hello world!");
        channel.transmit(&data).await.unwrap();
        Timer::after(Duration::from_secs(1)).await;
    }

    // for inspiration have a look at the examples at https://github.com/esp-rs/esp-hal/tree/esp-hal-v1.0.0-beta.0/examples/src/bin
}