from machine import Pin
import time

green_led = Pin(14, Pin.OUT)
red_led = Pin(15, Pin.OUT)

while True:
    print("Green ON, Red OFF")
    green_led.value(1)
    red_led.value(0)
    time.sleep(1)

    print("Green OFF, Red ON")
    green_led.value(0)
    red_led.value(1)
    time.sleep(1)