from machine import Pin, PWM
import time 
key = Pin(27, Pin.IN, Pin.PULL_DOWN)
num = 0
beep = PWM(Pin(2), freq = 1,  duty = 128)
Do = 523
Re = 587
Mi = 659
Fa = 698
Sol = 784
La = 880
Si = 988
Do1 = 1046

def play(freq, duty_time):
    beep.freq(freq)
    beep.duty(128)
    time.sleep(duty_time)
    beep.duty(0)
    time.sleep(0.05)
duty_time = 0.8
while True:
    if key.value() == 1:
        time.sleep_ms(100)
        if key.value() == 1:
            num += 1
            print(num)
            if num == 1:
                play(Do, duty_time)
            elif num == 2:
                play(Re, duty_time)
            elif num == 3:
                play(Mi, duty_time)                
            elif num == 4:
                play(Fa, duty_time)
            elif num == 5:
                play(Sol, duty_time)
            elif num == 6:
                play(La, duty_time)
            elif num == 7:
                play(Si, duty_time)
            else:
                play(Do1, duty_time)
                num = 0