import time # librería delay
import array # vector
import math # funciones matemáticas
import audioio # audio
import board # librería de placas
import digitalio # librería entrada y salida digital

button = digitalio.DigitalInOut(board.A2) # definir pin boton
button.switch_to_input(pull=digitalio.Pull.UP)

tone_volume = 0.1  # Incrementar valor para aumentar volumen
frequency = 440  # Cambiar frecuencia
length = 8000 // frequency
sine_wave = array.array("H", [0] * length)
for i in range(length):
    sine_wave[i] = int((1 + math.sin(math.pi * 2 * i / length)) * tone_volume * (2 ** 15 - 1)) # Largo de onda

audio = audioio.AudioOut(board.A0) # definir pin de salida de audio
sine_wave_sample = audioio.RawSample(sine_wave) # Forma de tono
while True:
    if not button.value:
        audio.play(sine_wave_sample, loop=True)
        time.sleep(1)
        audio.stop()