摘要
在一些特殊应用场合,需要设计一种满足USB接口HID类协议自定义按键功能键盘,按照应用场合可扩充或裁剪按键数目,系统应用程序根据接收的按键码调用相应的功能子函数。研究的是基于带有USB接口控制器的ARM芯片——LPC2478设计实现的HID类自定义按键功能键盘操控模块,通过编写ARM芯片控制程序,把操控模块映射为Windows系统标准HID类设备,Windows应用程序接收按键码,回复并发送控制信息给操控模块。实验分析表明,设计合理、系统适应性强、硬件构造模块化,可扩展至其他应用场合如工业现场控制、海军水面显示控制台使用。
In some special application situations,need to design a kind of user-defined key function keyboard with USB interface and HID class protocol,according to applying situation it can enlarge or cut key numbers,the system application execute sub-function according to the key code receiving.This paper research is according to the ARM chip-LPC2478 that with USB control interface to design a HID of user-defined key function keyboard operation module,programing the ARM chip control procedure,reflect the operation module of a windows system standard HID equipment,the windows application procedure receives key code and reply and send a control information to operation module.
出处
《工业控制计算机》
2011年第5期14-15,18,共3页
Industrial Control Computer
