基于StrongARM SA1100的嵌入式系统中触摸屏驱动设计  

Touch-screen Driver Design in StrongARM SA1100 Embedded System

作　　者：李波[1] 吴光敏[1] 

机构地区：[1]昆明理工大学,云南昆明650093

出　　处：《现代电子技术》2006年第21期151-153,共3页Modern Electronics Technique

摘　　要：触摸屏控制器简化了对触摸屏的控制,但他采用串行通信,这样触摸屏控制器的转换精度越高,从他读出触摸点坐标值所花的时间就越多。为了减少这种时间,以一个基于StrongARM SA1100的嵌入式系统应用实例介绍了一种典型的电阻式触摸屏并行通信硬件驱动电路以及在此基础上的软件驱动程序设计方法和流程。有利于操作系统对触摸屏的控制。Touch - screen controller simplifies the control of touch -screen, but the controller uses serial communication,so the higher precision of the controller needs more time to obtain coordinate. In order to limit this time consuming,this paper uses an embedded system example based on StrongARM SA1100 to show one parallel communication hardware driver of resistance type touch - screen and the design method and procedure of the software about this hardware circuit. It is useful for OS.

关 键 词：嵌入式系统 电阻式触摸屏 模拟信号选择器 模/数转换 

分 类 号：TP391.8[自动化与计算机技术—计算机应用技术]