def next_band():
        global CURRENT_BAND
        CURRENT_BAND = next(band)
        counter = bands[CURRENT_BAND][0]
        print(counter)
        print(CURRENT_BAND)

        return counter

def prev_band():
        global CURRENT_BAND
        CURRENT_BAND = list(bands.keys())[list(bands.keys()).index(CURRENT_BAND)-1]
        print(CURRENT_BAND)
        counter = bands[CURRENT_BAND][0] + 1
        return counter

def main_loop():
    try:
            counter = next_band()
            while True:
                    clkState = GPIO.input(clk)
                    dtState = GPIO.input(dt)
                    swState = GPIO.input(sw)
                    if swState == GPIO.HIGH:
                        print("yeet")
                    if clkState != clkLastState:
                            if counter > bands[CURRENT_BAND][1]:
                                    counter = next_band() 
                            if counter < bands[CURRENT_BAND][0]:
                                    counter = prev_band() 
                            if dtState != clkState:
                                    counter += step
                            else:
                                    counter -= step
                            print(round(counter, 3))
                    clkLastState = clkState
                    sleep(0.01)
    except KeyboardInterrupt:
            print("\nBye")
    finally:
            print("AAAAA")
            GPIO.cleanup()