摘要
介绍了四线式电阻触摸屏,分析了ADS7843触摸屏控制器原理,并设计整个硬件系统,通过两点定位法,详细描述了触摸屏的校准原理,结合ADS软件开发工具,实现了基于ARM7嵌入式系统的触摸屏的软件开发。实验表明,该系统操作方便、反应灵敏、人机交互能力强。
Four-resistanc touch screen is introduced.This paper analyzes the theory of the touch-screen controller ADS7843 and designs the hardware system.Through validating two points,the principle of calibration on touch-screen is described.Combining with software development tool of ADS,the development of the touch-screen software is implemented based on the ARM7 embedded system.A series of tests prove that this system features easy to use quick to react and better to interact.
出处
《电测与仪表》
北大核心
2008年第5期61-64,共4页
Electrical Measurement & Instrumentation
