不占用串口，使用过滤驱动来做。在此基础上增加了自动保存日志功能,程序启用后自动转入监听状态-Off the serial port, use the filter driver to do. On this basis, an increase of automatically save the log function, the program automatically transferred to monitor the opening of the state

串口过滤驱动程序，没有编译，给各位参考，有问题M我：huahuliang163@163.com -Serial filter driver, no compilation, to give you a reference, if there are problems M I: huahuliang163@163.com