#!/usr/bin/env ruby

require 'rubygems' # Tells ruby that we want to be able to import libraries from Rubygems
require 'pi_piper' # This gem allows us to control our Raspberry PI GPIO Ports.

# Tell Ruby that we want to create a new variable called 'red_pin'
# ':pin => 17' tells Ruby that the pin is on GPIO 17
# ':direction' tells the system that we want to make the pin an output

red_pin = PiPiper::Pin.new(:pin => 17, :direction => :out)
green_pin = PiPiper::Pin.new(:pin => 27, :direction => :out)
blue_pin = PiPiper::Pin.new(:pin => 22, :direction => :out)

# We're now going to create a simple loop.
loop do
  red_pin.on     # Turn the Red LED on
  sleep 1        # Wait for 1 second
  red_pin.off    # Turn the Red LED off
  green_pin.on   # Turn the Green LED on
  sleep 1        # Wait for 1 second
  green_pin.off  # Turn off the Green LED
  blue_pin.on    # Turn on the Blue LED
  sleep 1        # Wait for one second
  blue_pin.off   # Turn off the Blue LED

  # This loop will continue on infinitely until you kill the program.
  # You can kill the program by typing the shortcut CTL(control)+c

end