嵌入式Linux中对触摸屏驱动的设计  

Design of touch screen driver in embedded Linux

作　　者：李春萍 李颉思[2] 

机构地区：[1]江西应用工程职业学院,江西萍乡337042 [2]江西理工大学机电工程分院,江西赣州341000

出　　处：《计算机工程与设计》2007年第6期1387-1389,共3页Computer Engineering and Design

摘　　要：触摸屏设备需要经过特定的硬件与软件驱动处理后才能够进行连续和稳定的工作。详细介绍了一种用arm9处理器s3c2410和驱动芯片ADS7846构成的触摸屏控制系统。给出了具体的连接方法和工作原理,并在嵌入式Linux系统中,根据SPI的工作时序分析和设计了关键部分的驱动程序。实践证明该方案对输入操作具有响应迅速、采样精确的优点。Touch screen only worked continuously and steadily through driven disposal based on specifically hardware and software. A touch pannel control system, which is composed ofarm9 processor s3c2410 and driven chip ADS7846, is introduced in detail; moreover, the material connection and principle of this system is presented and the pivotal driver is analyzed and designed in the light of the SPI clock in embedded Linux. Application showed that this strategy has advantages of rapid response and precise sampling for input operation.

关 键 词：触摸屏 同步串行外部接口 嵌入式操作系统 驱动程序 数据采样 

分 类 号：TP316[自动化与计算机技术—计算机软件与理论] TP368[自动化与计算机技术—计算机科学与技术]