from machine import Pin, ADC
from time import sleep

led_verde = Pin(15, Pin.OUT)
led_amarillo = Pin(4, Pin.OUT)
led_rojo = Pin(5, Pin.OUT)

adc_pin = ADC(Pin(13))

adc_pin.width(ADC.WIDTH_12BIT)

adc_pin.atten(ADC.ATTN_11DB)


resolucion_adc = 4095  
tension_referencia = 3.3  

while True:
    adc_valor = adc_pin.read()
    
    tension = (adc_valor / resolucion_adc) * tension_referencia
    
    print('Valor ADC:', adc_valor, '- Tension:', tension, 'V')

    if 0 <= adc_valor <= 500:
        led_amarillo.off()
        led_rojo.off()
        led_verde.off()
    if 500 < adc_valor <= 2000:
        led_amarillo.off()
        led_rojo.off()
        led_verde.on()
    if 2000 < adc_valor <= 3000:
        led_amarillo.on()
        led_rojo.off()
        led_verde.on()
    if 3000 < adc_valor <= 4095:
        led_amarillo.on()
        led_rojo.on()
        led_verde.on()

    
    sleep(0.5)