两台计算机间用串口传输文件的例子，含发送端和接收端的源代码。 文件按包一个一个传输，每传个包等待对方应答后再继续传下一个包，传输稳定可靠。多次发大文件长时间测试未发现问题-Serial port between two computers, send files using the example of the sender and the receiver with the source code. File transfer according to package one by one,