def clr_range(num: number):
    global x_scrn
    for index in range(2):
        x_scrn = index + num
        for y_scrn in range(5):
            led.unplot(x_scrn, y_scrn)

def on_button_pressed_a():
    global value, xval, yval, range2
    value += 1
    if value > 8:
        value = -1
        xval = 0
        yval = -1
        clr_range(0)
    else:
        if value == 5:
            xval = 1
            yval = -1
        yval += 1
        led.plot(xval, Math.map(yval, 0, 4, 4, 0))
    range2 = 1 + value
    frequency()
input.on_button_pressed(Button.A, on_button_pressed_a)

def on_button_pressed_ab():
    global o_enable
    if o_enable == 0:
        o_enable = 1
        led.plot(2, 2)
    else:
        o_enable = 0
        led.unplot(2, 2)
input.on_button_pressed(Button.AB, on_button_pressed_ab)

def on_button_pressed_b():
    global scale, xsig, ysig, multiplier
    scale += 1
    if scale > 5:
        scale = -1
        xsig = 3
        ysig = -1
        clr_range(3)
    else:
        if scale == 5:
            xsig = 4
            ysig = -1
        ysig += 1
        led.plot(xsig, Math.map(ysig, 0, 4, 4, 0))
    if scale == -1:
        multiplier = 0
    else:
        multiplier = 10 ** scale + 0
    frequency()
input.on_button_pressed(Button.B, on_button_pressed_b)

def output():
    if o_enable == 0:
        music.ring_tone(0)
    else:
        if freq >= 4:
            music.ring_tone(freq)
        else:
            music.ring_tone(0)
def frequency():
    global freq
    freq = range2 * multiplier
    output()
def reset():
    global xval, yval, value, xsig, ysig, scale, freq, range2, multiplier, o_enable
    xval = 0
    yval = -1
    value = -1
    xsig = 3
    ysig = -1
    scale = -1
    freq = 0
    range2 = 0
    multiplier = 0
    o_enable = 0
    pins.analog_pitch(0, 0)
    music.ring_tone(0)
freq = 0
multiplier = 0
ysig = 0
xsig = 0
scale = 0
o_enable = 0
range2 = 0
yval = 0
xval = 0
value = 0
x_scrn = 0
# Needs to be included to ensure the output is off at start up otherwise it starts up at 44kHz
pins.analog_set_pitch_pin(AnalogPin.P0)
music.set_built_in_speaker_enabled(False)
basic.show_string("S_PGEN")
reset()

def on_forever():
    pass
basic.forever(on_forever)