import board
import touchio
from adafruit_debouncer import Debouncer
import pwmio

speaker = pwmio.PWMOut(board.GP16, variable_frequency=True)
volume = 32768
speaker.duty_cycle = 0

pads = [board.GP0, board.GP1, board.GP2, board.GP3, board.GP4, board.GP5, board.GP6, board.GP7, board.GP8, board.GP9, board.GP10, board.GP11]
notes = ['C', 'Db', 'D', 'Eb', 'E', 'F', 'F#', 'G', 'Ab', 'A', 'Bb', 'B']
freqs = [262, 277, 294, 311, 330, 349, 370, 392, 410, 440, 466, 494]
btns = []
n_btns = 0

for pad in pads:
    print(pad)
    touchin = touchio.TouchIn(pad)
    btns.append(Debouncer(touchin))
    n_btns += 1

def play(freq):
    speaker.duty_cycle = volume
    speaker.frequency = freq

def stop():
    speaker.duty_cycle = 0

while True:
    for i in range(n_btns):
        btn = btns[i]
        btn.update()
        if btn.rose:
            print(f"{notes[i]} pressed!")
            play(freqs[i])
        if btn.fell:
            print(f"{notes[i]} released!")
            stop()