Blinking a Led in Elixir on ESP32 with AtomVM

Blink.ex

defmodule Blink do

  @led_gpio 2

  def start() do
    gpio_driver = GPIO.open()
    GPIO.set_direction(gpio_driver, @led_gpio, :output)
    
    loop(gpio_driver, 0)
  end

  def loop(gpio_driver, level) do
    GPIO.set_level(gpio_driver, @led_gpio, level)
    :timer.sleep(1000)

    loop(gpio_driver, 1 - level)
  end

end