from machine import Pin
from utime import sleep, sleep_ms
import _thread

cero = Pin(15, Pin.OUT)
uno = Pin(2, Pin.OUT)
dos = Pin(4, Pin.OUT)
tres = Pin(5, Pin.OUT)
cuatro = Pin(18, Pin.OUT)
cinco = Pin(19, Pin.OUT)
seis = Pin(21, Pin.OUT)
siete = Pin(22, Pin.OUT)

leds = [cero, uno, dos, tres, cuatro, cinco, seis, siete]

def tarea_uno():

    while True:

        for i in leds[0:4:]:

            i.value(1)
            sleep_ms(100)

            i.value(0)
            sleep_ms(100)

_thread.start_new_thread(tarea_uno, ())

def tarea_dos():

    while True:

        for i in leds[7:3:-1]:

         i.value(1)
         sleep_ms(500)

         i.value(0)
         sleep_ms(500)


while True:
    
    tarea_dos()