uart.py 文件源码

def connect(port, baudrate, application, loop=None):
    if loop is None:
        loop = asyncio.get_event_loop()

    connection_future = asyncio.Future()
    protocol = Gateway(application, connection_future)

    transport, protocol = yield from serial_asyncio.create_serial_connection(
        loop,
        lambda: protocol,
        url=port,
        baudrate=baudrate,
        parity=serial.PARITY_NONE,
        stopbits=serial.STOPBITS_ONE,
        xonxoff=True,
    )

    yield from connection_future

    return protocol