musiccode.py

import time
import array
import math
import board
import digitalio

try:
    from audiocore import RawSample
except ImportError:
    from audioio import RawSample

try:
    from audioio import AudioOut
except ImportError:
    try:
        from audiopwmio import PWMAudioOut as AudioOut
    except ImportError:
        pass  # not always supported by every board!

SAMPLERATE = 8000  # 8000 samples/second, recommended!

def generate_sine(frequency):
    length = SAMPLERATE // frequency
    sine_wave = array.array("H", [0] * length)
    for i in range(length):
        sine_wave[i] = int(math.sin(math.pi * 2 * i / 18) * (2 ** 15) + 2 ** 15)
    return RawSample(sine_wave, sample_rate=SAMPLERATE)

def generate_square(frequency):
    length = SAMPLERATE // frequency
    square_wave = array.array("H", [0] * length)
    for i in range(length):
        if i < length / 2:
            square_wave[i] = 0
        else:
            square_wave[i] = 20000
    return RawSample(square_wave, sample_rate=SAMPLERATE)
    
def generate_triangle(frequency):
    length = SAMPLERATE // frequency
    triangle_wave = array.array("H", [0] * length)
    max_val = 65000
    for i in range(length):
        if i < length / 2:
            triangle_wave[i] = math.floor((i/(length/2))*max_val)
        else:
            triangle_wave[i] = max_val - math.floor(((i-(length/2))/(length/2))*max_val)
    print(triangle_wave)
    return RawSample(triangle_wave, sample_rate=SAMPLERATE)

def one_sec(note):
    audio.play(note, loop=True)
    time.sleep(1)
    audio.stop()

sine_A = generate_sine(440)
sine_B = generate_sine(494)

square_A = generate_square(440)
square_B = generate_square(494)

triangel_A = generate_triangle(440)
triangel_B = generate_triangle(494)

# Enable the speaker
speaker_enable = digitalio.DigitalInOut(board.SPEAKER_ENABLE)
speaker_enable.direction = digitalio.Direction.OUTPUT
speaker_enable.value = True

audio = AudioOut(board.SPEAKER)

one_sec(sine_A)
one_sec(square_A)
one_sec(triangel_A)
one_sec(sine_B)
one_sec(square_B)
one_sec(triangel_B)