基于ATmega128的触摸屏设计  

Design of Touch Screen Based on ATmega128

作　　者：吕佃顺[1] 王广柱[1] 

机构地区：[1]山东大学电气工程学院,山东济南250061

出　　处：《工业控制计算机》2007年第9期57-58,共2页Industrial Control Computer

摘　　要：主要论述了基于ATmega128的四线电阻触摸屏转换芯片ADS7843接口程序的设计方法。ADS7843通过SPI总线与ATmega128通讯,通过坐标转换程序得到体现LCD坐标的触摸屏位置,查找该位置是否有对应的按键,并进入相应的按键服务程序。This paper mainly describes apparatus design for Four-wire resistance touch screen interface chip ADS7843 based on ATmega128 single-chip microcomputer.ADS7843 communicates with ATmega128 by SPI bus,and then obtains positions of touch screen which can represent coordinates of LCD.If there is a defined key,the program will call the key_service functions.

关 键 词：触摸屏 ADS7843 ATMEGA128 接口程序 

分 类 号：TN873[电子电信—信息与通信工程]