from machine import Pin, PWM
from time import sleep

# Buzzer pin
buzzer = PWM(Pin(15))

# Mario melody notes (frequency in Hz)
MELODY = [
    (659, 0.15),  # E5
    (659, 0.15),
    (0,   0.15),
    (659, 0.15),
    (0,   0.15),
    (523, 0.15),  # C5
    (659, 0.15),
    (0,   0.15),
    (784, 0.15),  # G5
    (0,   0.45),
    (392, 0.15),  # G4

    (0,   0.45),

    (523, 0.15),
    (392, 0.15),
    (330, 0.15),

    (440, 0.15),
    (494, 0.15),
    (466, 0.15),
    (440, 0.15),

    (392, 0.15),
    (659, 0.15),
    (784, 0.15),
    (880, 0.15),

    (698, 0.15),
    (784, 0.15),
    (0,   0.15),
    (659, 0.15),
    (523, 0.15),
    (587, 0.15),
    (494, 0.15),
]

def play_tone(freq, duration):
    if freq == 0:
        buzzer.duty_u16(0)
    else:
        buzzer.freq(freq)
        buzzer.duty_u16(30000)  # Volume

    sleep(duration)
    buzzer.duty_u16(0)
    sleep(0.02)

# Play melody
while True:
    for note, duration in MELODY:
        play_tone(note, duration)

    sleep(2)