from machine import Pin, PWM
from time import sleep

# Initialize the buzzer and buttons
buzzer = PWM(Pin(15))
button_A = Pin(16, Pin.IN, Pin.PULL_UP)
button_B = Pin(17, Pin.IN, Pin.PULL_UP)
button_C = Pin(18, Pin.IN, Pin.PULL_UP)
button_D = Pin(19, Pin.IN, Pin.PULL_UP)

# Define the frequencies for the notes
notes = {
    'C7': 2093,
    'D7': 2349,
    'E7': 2637,
    'F7': 2794
}

# Function to play a note
def play_note(note, duration=0.5):
    freq = notes[note]
    buzzer.freq(freq)
    buzzer.duty_u16(int(65535 * (freq / 440)))
    sleep(duration)
    buzzer.duty_u16(0)

# Main loop
while True:
    if button_A.value() == 0:
        play_note('C7')
        print('Botton A')
    elif button_B.value() == 0:
        play_note('D7')
        print('Botton B')
    elif button_C.value() == 0:
        play_note('E7')
        print('Botton C')
    elif button_D.value() == 0:
        play_note('F7')
        print('Botton D')