【作者】 苏宁；

【导师】 荆涛；

【作者基本信息】 北京交通大学 ， 通信与信息系统， 2008， 硕士

【摘要】 在嵌入式操作系统中，Windows CE.net因其对多种平台的支持以及在应用开发方面的便利特点在便携设备设计中被广泛采用。嵌入式产品的开发，包含的内容众多，其中驱动程序的开发是非常重要的一部分。本文结合实际项目，对基于Windows CE.net操作系统的车载导航PDA显示驱动程序进行了设计：根据S3C2440ALCD控制器的特性，设计了CPU与显示屏的接口电路；针对LCD显示器的特点，设计了背光驱动电路；并通过定时器的脉冲宽度调制，对背光亮度进行控制；在显示驱动程序中，采用GPE C++类处理默认的绘图工作，在此基础上，驱动程序的开发人员只需要编写与硬件相关的特定代码即可，简化了显示驱动程序的开发过程；针对不同分辨率的LCD显示屏，给出了驱动程序的修改方法。本文从Windows CE.net的平台结构和其驱动程序的架构入手，根据Samsung公司的LTE400WQ-F02 4寸LCD液晶屏的性能特性，实现了分辨率为480×272像素的液晶屏的显示驱动。测试表明：所设计的驱动程序运行稳定，可支持应用软件运行。论文最后总结了显示驱动程序设计过程中所做的工作，并展望了显示驱动程序今后需要改进的地方。更多还原

【Abstract】 Among the embedded OS, Windows CE.net is adopted in portable equipment widely because of its multiple platform support capability and easy programming method. The development of embedded product relates to many contents and writing drivers is the most important part.According to the practical project, this paper designs the display driver of vehicle navigation PDA based on Windows CE.net: The interface circuit between CPU and LCD is designed based on the characteristics of S3C2440A LCD controller; A back-light driver circuit is presented based on the performances of LCD; Pulse width modulation function of timer0 is used to control the brightness of back-light; GPE C++ classes are adopted to simplify display driver development, so developers of display drivers only have to write codes related to hardware layers; Then we analyze how to amend codes faced to different color modes.We start from the platform structure of Windows CE.net and its driver structure. And then, realize the display driver of 480×272 dots LCD according to characteristics of LTE400WQ-F02 TFT-LCD produced by Samsung. Testing results show that the display driver designed in this paper runs steadily and supports application software running.In the end, we summarize the design work of display driver in this paper, and describe the prospect to improve the display driver in the future.更多还原