from machine import Pin, PWM
from utime import sleep, sleep_ms
import _thread
from neopixel import NeoPixel


np=NeoPixel(Pin(22),16)
buzzer=PWM(Pin(14))
for i in range(16):
    np[i]=255,0,0
np.write()

note = {
    'a': 392, 'a#': 415, 'b': 440, 'c': 466, 'C#': 494, 'd': 523, 'd#': 554, 'e': 587,
    'f': 622, 'f#': 659, 'g': 698, 'g#': 740 }
NOTES = {
    'a', 'a#', 'b', 'c', 'C#', 'd', 'd#', 'e','f', 'f#', 'g', 'g#'
}

def freq(note):
    if len(note)==3:
        octave=int(note[2])
    else:
        octave=int(note[1])
    key_no=NOTES.index(note[:-1])
    if key_no<3:
        key_no=key_no+12+((octave-1)*12)+1
    else:
        key_no=key_no+((octave-1)*12)+1
    return 440*(2**(key_no-49)/12)
def tone(pin,freq,time):
    buzzer=PWM(Pin(pin),freq=freq,duty=512)
    sleep_ms(time)
    buzzer.deinit()