ARM11嵌入式系统Linux下LCD的驱动设计  

Design of LCD Driving in Linux Based on ARM11 Embedded System

作　　者：张伽伟[1] 周安栋[1] 罗勇[1] 

机构地区：[1]海军工程大学电子工程学院,湖北武汉430033

出　　处：《液晶与显示》2011年第5期660-664,共5页Chinese Journal of Liquid Crystals and Displays

摘　　要：对ARM11嵌入式系统Linux下的LCD驱动设计进行了研究,分析了在Framebuffer基础上编写LCD驱动的方法和两种直接读写GPIO的LCD驱动方法,通过测试归纳出3种LCD驱动方法的优缺点。在比较Framebuffer和两种直接读写GPIO的LCD驱动方法优劣的基础上,实现了Framebuffer与直接读写GPIO驱动结合的LCD控制方式。实际应用表明:用该方法控制LCD显示,具有显示速度快、驱动简单、移植性强的优点。The LCD driver in Linux based on ARM11 embedded system was studied.A method of LCD driving design on the basis of the framebuffer,and two methods on the basis of reading and writing GPIO directly were analyzed.The advantages and disadvantages of the three LCD drivers were summarized by testing.A LCD control mode was implemented by combining the framebuffer and direct both reading and writing GPIO driver.The application indicates that this method can obtain following advantages：faster speed,simpler driver and stronger transplantation.

关 键 词：Linux ARM11 LCD驱动 FRAMEBUFFER GPIO 

分 类 号：TN27[电子电信—物理电子学] TP399[自动化与计算机技术—计算机应用技术]