1 可以动态修改串口的参数 2 采用线程方式来发送文件 3 用循环队列来接收数据，同时用线程来显示数据，避免接收大量数据时程序无响应-1 can dynamically modify the parameters of the serial using threads to send the file with the circular queue to receive data at the same time to display data using threads to avoi