说明：  sysfs处理模块，可以方便对linux的sysfs文件系统进行读写，直接可以用于项目的工业级代码，经过了项目的严格测试，测试覆盖率100
(Sysfs processing module, you can easily linux sysfs file system to read and write directly to the project can be used for industrial-grade code, after the project s rigorous testing, test coverage of 100 )