def joystickLoop(eventFile):
    FORMAT = 'llHHI'
    EVENT_SIZE = struct.calcsize(FORMAT)
    with open(eventFile, 'rb') as infile:
        while True:
            event = infile.read(EVENT_SIZE)
            _, _, t, c, v = struct.unpack(FORMAT, event)
            print(t, c, v)
            if t == 3 and v == 4294967295:
                if c == 17:
                    # press UP:
                elif c == 16:
                    # press LEFT
            elif t == 3 and v == 1:
                if c == 17:
                    # press DOWN:
                elif c == 16:
                    # press RIGHT
            elif t == 3 and v == 0:
                if c == 17 or c == 16:
                    # pass
            elif t == 1 and v == 1:
                if c == 307:
                    # Camera up
                if c == 305:
                    # Cameta down
                if c == 304:
                    # Cameta right
                if c == 308:
                    # Camera left
            elif t == 1 and v == 1:
                pass