import machine
import time
LED1_PIN = 5 # D1
LED2_PIN = 4 # D2
LED3_PIN = 0 # D3
LED4_PIN = 2 # D4
def setup():
led1 = machine.Pin(LED1_PIN, machine.Pin.OUT)
led2 = machine.Pin(LED2_PIN, machine.Pin.OUT)
led3 = machine.Pin(LED3_PIN, machine.Pin.OUT)
led4 = machine.Pin(LED4_PIN, machine.Pin.OUT)
return led1, led2, led3, led4
def blink(led, duration):
led.on()
time.sleep_ms(duration)
led.off()
time.sleep_ms(duration)
def main():