//! 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::{
    delay::Delay,
    gpio::{Level, Output, OutputConfig},
    main,
};
use log::info;

// 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());
    esp_println::logger::init_logger_from_env();

    let mut led = Output::new(peripherals.GPIO4, Level::High, OutputConfig::default());
    let delay = Delay::new();

    info!("Hello world!");
    loop {
        info!("Toggling LED...");
        led.toggle();
        delay.delay_millis(500);
    }
}