from machine import Pin, ADC
from time import sleep_ms
from neopixel import NeoPixel

freio = Pin(6, Pin.IN, Pin.PULL_DOWN)
re    = Pin(2, Pin.IN, Pin.PULL_DOWN)

led = NeoPixel (Pin(5), 5)

pot = ADC(Pin(3), atten= ADC.ATTN_11DB)

while True:
  if freio.value() == 1:
    for p in range(len(led)):
      led[p] = (255, 0, 0)
    led.write()
  elif re.value() == 1:
    for p in range(len(led)):
      led[p] = (255, 255, 255)
    led.write()
  else:
    valor = pot.read_u16()
    if valor < 25000:
      for p in range(len(led)):
        led[p] = (255, 255, 0)
        led.write()
        sleep_ms(150)
      for p in range(len(led)):
        led[p] = (0, 0, 0)
      led.write()
      sleep_ms(50)

    elif valor > 39000:
      for p in range(len(led)-1, -1, -1):
        led[p] = (255, 255, 0)
        led.write()
        sleep_ms(150)
      for p in range(len(led)):
        led[p] = (0, 0, 0)
      led.write()
      sleep_ms(50)
    else:
      for p in range(len(led)):
        led[p] = (0, 0, 0)
        led.write()