import time
time.sleep(0.1) # Wait for USB to become ready
from machine import Pin, UART
import utime

led = Pin(5, Pin.OUT)

def callback(msg):
    print(msg)
    if msg == "ON":
        led.on()
    if msg == "OFF":
        led.off()


while True:        
    ent = input("Entrada de comando\n")
    callback(ent)