基于AT91RM9200的触摸屏驱动及三点校正算法  

The Touch Screen Driver Based On AT91RM9200 and Three-Points Calibration Algorithm

作　　者：徐杨[1,2] 乔卫民[1] 赵中[1] 

机构地区：[1]中国科学院近代物理研究所 [2]100039北京中国科学院研究生院

出　　处：《微计算机信息》2007年第02Z期73-74,215,共3页Control & Automation

摘　　要：凭借Internet的优势,随着性能的提高和价格的下降,嵌入式系统的应用也更加的普及和广泛.本文介绍了在ARM-Linux操作系统下,基于USB接口的五线电阻触摸屏的嵌入式驱动程序和一种可用于纠正一些常见机械性误差的触摸屏三点校准算法,驱动的编译配置和算法的实现。由于校准算法简单、灵活,用软件实现,可降低嵌入式系统中的成本,提高产品质量。By right of advantage of Internet and with the advance of performance and decline of price, the application of embedded system is more and more widely and popularly. This article introduces a 5-wire touch screen device driver with USB interface under ARM-Linux operation system as well as three-Points calibration algorithm which is capable of correcting for common mechanical errors.h also make mention of configuration and compilation of device driver as well as implementation of algorithm.The three-Points calibration algorithm could reduce the price of embedded system and enhance the qualities of products in terms of flexibility.

关 键 词：AT91RM9200 三点校准算法 驱动程序 触摸屏 

分 类 号：TP316.89[自动化与计算机技术—计算机软件与理论]