import machine
import time

buzzer = machine.PWM(machine.Pin(13))  # Create PWM object on Pin 13

# Define note frequencies (in Hz)
notes = {
    'C4': 262,
    'D4': 294,
    'E4': 330,
    'F4': 349,
    'G4': 392,
    'A4': 440,
    'B4': 494,
    'C5': 523,
    ' ': 0  # Silence
}

# Define the melody (notes + beats)
melody = [
    ('C4', 0.5), ('D4', 0.5), ('E4', 0.5), ('F4', 0.5),
    ('G4', 0.5), ('A4', 0.5), ('B4', 0.5), ('C5', 1.0),
    (' ', 0.5)  # Short pause at the end
]

# Play the melody
for note, duration in melody:
    if notes[note] == 0:
        buzzer.duty_u16(0)  # Silence
    else:
        buzzer.freq(notes[note])  # Set frequency
        buzzer.duty_u16(30000)    # Set volume (0-65535)

    time.sleep(duration)

buzzer.deinit()  # Turn off PWM when done