from machine import Pin, ADC, PWM
from utime import sleep, sleep_ms

sonido = PWM(Pin(36))

do = Pin(18, Pin.IN, Pin.PULL_UP)   
re = Pin(17, Pin.IN, Pin.PULL_UP)   
mi = Pin(16, Pin.IN, Pin.PULL_UP)  
fa = Pin(15, Pin.IN, Pin.PULL_UP)


notas = [261, 293, 329, 349, 392, 440, 493, 523]

while True:
    print(do.value(),re.value(),mi.value(),fa.value())

    if do.value()==0:
        sonido.freq(261)
        sonido.duty(1023)
    
    elif re.value()==0:
        sonido.freq(293)
        sonido.duty(1023)

    elif mi.value()==0:
        sonido.freq(329)
        sonido.duty(1023)
    
    elif fa.value()==0:
        sonido.freq(349)
        sonido.duty(1023)
    
    else:
        sonido.freq(20)
        sonido.duty(0)