//! Blinks an LED
//!
//! This assumes that a LED is connected to the pin assigned to `led`. (GPIO4)

#![no_std]
#![no_main]

use esp_backtrace as _;
use esp_hal::{
    rmt::{PulseCode, Rmt, TxChannelConfig, TxChannel, TxChannelCreator}
    delay::Delay,
    gpio::{Level, Output, OutputConfig},
    main,
};

// This creates a default app-descriptor required by the esp-idf bootloader.
// For more information see: <https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/app_image_format.html#application-description>
esp_bootloader_esp_idf::esp_app_desc!();

#[main]
fn main() -> ! {
    let peripherals = esp_hal::init(esp_hal::Config::default());

    let rmt_driver = Rmt::new(peripherals.RMT, Rate::from_hz(80)).unwrap();
    let tx_config = TxChannelConfig::default();
    let delay = Delay::new();
    let mut count = 0;

    let mut channel = rmt_driver
      .channel0
      .configure(peripherals.GPIO12, tx_config)
      .unwrap();

    let mut white = [PulseCode::new(Level::High, 700, Level::Low, 600); 24];
    loop {
        while count < 4 {
          let transaction = channel.transmit(&white).unwrap();
          channel = transaction.wait().unwrap();

          count += 1;
        }
        delay.delay_millis(500);
      }
}