#####################################
###### IMPORT LIBRARIES
from machine import Pin
from utime import sleep

#####################################
###### PIN CONFIGURATIONS
# Configure the pins as output
red_pin = Pin(15, Pin.OUT)      # Red LED on GPIO 15
green_pin = Pin(16, Pin.OUT)    # Green LED on GPIO 14
blue_pin = Pin(19, Pin.OUT)     # Blue LED on GPIO 13

#####################################
###### SUBROUTINE FOR RGB LED
def sub_rgb_led():
    # 0 = Turn ON
    # 1 = Turn OFF

    # Red ON
    red_pin.value(0)
    green_pin.value(1)
    blue_pin.value(1)
    sleep(0.5)

    # Green ON
    red_pin.value(1)
    green_pin.value(0)
    blue_pin.value(1)
    sleep(0.5)

    # Blue ON
    red_pin.value(1)
    green_pin.value(1)
    blue_pin.value(0)
    sleep(0.5)

#####################################
###### MAIN ROUTINE
def main():
    while True:
        sub_rgb_led()

#####################################
###### EXECUTE MAIN ROUTINE
if __name__ == '__main__':
    main()