from machine import Pin, PWM
from time import sleep_ms


class BUZZER:
    def __init__(self, sig_pin):
        self.pwm = PWM(Pin(sig_pin, Pin.OUT))
        
    def play(self, melodies, wait, duty):
        for note in melodies:
            if note == 0:
                self.pwm.duty(0)
            else:
                self.pwm.freq(note)
                self.pwm.duty(duty)
            sleep_ms(wait)
        self.pwm.duty(0)

    


#notes and its equivalent frequency
B0=31
C1=33
CS1=35
D1=37
DS1=39
E1=41
F1=44
FS1=46
G1=49
GS1=52
A1=55
AS1=58
B1=62
C2=65
CS2=78
E2=82
F2=87
FS2=93
G2=98
GS2=104
A2=110
AS2=117
B2=123
C3=131
CS3=139
D3=147
DS3=156
E3=165
F3=175
FS3=185
G3=196
GS3=208
A3=220
AS3=233
B3=247
C4=262
CS4=277
D4=294
DS4=311
E4=330
F4=349
FS4=370
G4=392
GS4=415
A4=440
AS4=466
B4=494
C5=523
CS5=554
D5=587
DS5=622
E5=659
F5=698
FS5=740
G5=784
GS5=831
A5=880
AS5=932
B5=988
C6=1047
CS6=1109
D6=1175
DS6=1245
E6=1319
F6=1397
FS6=1480
G6=1568
GS6=1661
A6=1760
AS6=1865
B6=1976
C7=2093
CS7=2217
D7=2349
DS7=2489
E7=2637
F7=2794
FS7=2960
G7=3136
GS7=3322
A7=3520
AS7=3729
B7=3951
C8=4186
CS8=4435
D8=4699
DS8=4978

birthday = [
    C5, C5, 0, C5, 0,  D5, D5, 0, C5, C5, C5, 0, 0, F5, F5,0, E5, E5, E5,
    0, 0, 0, 0, C5, C5, 0, C5, 0,  D5, D5, 0, C5, C5, C5, 0, 0, G5, G5,0, F5, F5, F5,
    0, 0, 0, 0, C5, C5, 0, C5, 0,  A5, A5, 0, F5, F5, 0, 0, E5, E5, 0,E5, E5, 0, D5, D5, D5,
    0, 0, 0, 0, AS5, AS5, 0, AS5, 0,  A5, A5, 0, F5, F5, F5, 0, 0, G5, G5, 0, F5, F5, F5,
]


button = Pin(12, Pin.IN, Pin.PULL_DOWN)

b = BUZZER(23)
last_click = 0
duty_c = 0

def switchVelocity(btn):
    global duty_c
    global last_click
    current = last_click
    if current == 0:
        duty_c = 130
        last_click = 1
    elif current == 1:
        duty_c = 50
        last_click = 0
    
    b.play(birthday,duty_c,512)


button.irq(handler=switchVelocity, trigger=Pin.IRQ_RISING)