基于PXA255微处理器的液晶显示驱动设计  

Design of LCD display drive based on PXA255 microprocessor

作　　者：姚胜兴[1] 

机构地区：[1]湖南工学院电气与信息工程系,湖南衡阳421008

出　　处：《计算机工程与应用》2007年第7期101-103,107,共4页Computer Engineering and Applications

基　　金：湖南省教育厅科研项目(the Research Project of Department of Education of Hunan Province; China under Grant No.02B026)

摘　　要：介绍了嵌入式微处理器PXA255及其集成的LCD控制器,分析了TFT-LCD的基本原理,结合它们的特点和工作时序,设计了LCD的硬件驱动接口电路,以Linux为嵌入式操作系统,设计了相应的驱动程序,能显示清晰稳定的画面,由于Linux平台下的驱动程序具有很强的移植性,因而该显示驱动不仅适用于楼宇自动化系统,略作变化后还可应用于其它嵌入式系统中。The embedded microprocessor PXA255 and its integrated LCD controller are introduced,the basic principle of TFTLCD is also analyzed.Combining with their characteristics and the timing sequence,the hardware drive interface circuits are designed,then making Linux as embedded operation system,the correspond drive software is designed.As the result,the clear and stable pictures can be shown on the LCD.Because the software can be well transplanted,the display drive can be used in not only the building automation system,but also the other embedded systems with a few changes.

关 键 词：PXA255 嵌入式系统 LCD 显示驱动 

分 类 号：TN141.9[电子电信—物理电子学] TP368[自动化与计算机技术—计算机系统结构]