USB接口用户专用键盘快速检测模块的设计与实现

Design and Realization of Fast-testing Module for User Special Keyboard with USB Interface

针对USB接口用户专用键盘,设计了以51系列单片机和USB主机控制器芯片CH375为核心的快速检测模块,以实现专用键盘的快速检测。文章介绍了CH375芯片的工作原理、探讨了HID类规范,重点介绍了模块的硬件原理和软件流程。使用该模块进行用户专用键盘地调试、检测,取得了比较满意的效果。

For user special keyboard with USB interface,a fast-testing module based on 51 single chip microprocessor and USB-host controller CH375 is given to test the keyboard efficiently.The principle of CH375 is introduced and the standard of HID class is discussed.The paper puts more emphases on the module＇s hardware principle and software process.A satisfying result is achieved by using this module to test user special keyboard.