__init__.py 文件源码

def _init():
    global _t_poll, _bus

    if _bus is not None:
        return

    _bus = smbus.SMBus(1)

    _bus.write_byte_data(ADDR, REG_CONFIG, 0b00011111)
    _bus.write_byte_data(ADDR, REG_POLARITY, 0b00000000)
    _bus.write_byte_data(ADDR, REG_OUTPUT, 0b00000000)

    _t_poll = Thread(target=_run)
    _t_poll.daemon = True
    _t_poll.start()

    set_pixel(0, 0, 0)

    atexit.register(_quit)