摘 要:随着信息技术日新月异的发展,嵌入式系统在信息终端上的应用越来越广泛。由于嵌入式系统在硬件方面的限制,需要GUI平台具有短小精悍、可靠稳定、方便移植、可裁减等特性,因此需要一个轻量级的通用图形用户接口,提供给终端的用户使用,从而加速终端设备的普及和发展。因为MiniGUI具有轻型,占用资源少,高性能,高可靠性等特点,所以MiniGUI能够好的提供一个满足需要的开发基础平台。与此同时,随着家用电器的增多,使得人们需要一个方便的智能终端进行统一操控。本论文研究在嵌入式Linux下基于MiniGUI信息终端软件开发的一个智能家居信息终端。
本论文详细介绍了整个系统的开发过程,从交叉编译开发环境的搭建,MiniGUI库和资源文件的移植,ramdisk.gz制作,到Flash的烧制以及终端图形化界面的设计与实现。
系统实现采用JXARM9-2410嵌入式开发板作硬件平台,在Linux操作系统下利用MiniGUI作为图形用户界面软件开发平台,实现智能家居系统的主界面显示、智能家居系统开关控制显示、智能家居系统定时控制显示等功能。最后,本文对智能家居终端开发进行了总结,并对需要进一步解决的问题进行了讨论。
关键词:嵌入式Linux,开发板,MiniGUI,智能家居,信息终端
MiniGUI –Based Embedded Linux Information Terminal Software Development
ABSTRACT :With the rapid development of information technology, the embedded system is more and more frequently used in information terminal. Because the embedded system has some limitations on hardware, its GUI platform should be short and pithy, reliable and steady, convenient to transplant and able to reduce, thus it needs a lightweight common graphical user interface to be provided for the terminal user. The need accelerates the popularization and development of the terminal appliance. MiniGUI have these advantages, such as take up fewer resources, high performance, high reliability, etc. So can MiniGUI meet the needs of the development platform. Meanwhile, with the increase in household appliances, we need to make an intelligent terminal for the unified control. This paper introduces with detail an information terminal software-brainpower household system which is developed on the base embedded Linux and MiniGUI.
This paper introduces the development process of the system, the development environment’s construction of cross translation, the transplant of MiniGUI storeroom and resource, the fire of Flash, the design and realization of terminal graphical user interface.
In practice, the paper adopts JXARM9-2410 embedded development board as software platform, and it also takes MiniGUI which belongs to Linux operating system as software development platform of graphical user interface, which, aims at realizing the functions of display the main interface, switch control and timing control of the brainpower household system.In the end, the paper summarizes the development of the brainpower household terminal and discusses problems which need to be solved in implementations.
Key words: embedded Linux, development board, MiniGUI, brainpower household, information terminal
1绪论
1.1 基本概念及国内外研究现状
随着信息技术日新月异的发展,在以计算机技术、信息通讯技术相结合的信息时代的快速发展和互联网的广泛应用的形式下,人们对信息的需求越来越大,对获取信息速度和便捷性的要求也越来越高,普通的无操作系统的终端设备己无法满足人们在信息时代对通信方式的要求。业界普遍认识到终端发展的最终结果将是3C合一,即集Computer, Communication, Consumer为一体。于是,嵌入式设备应运而生。
嵌入式设备是指应用嵌入式系统应用技术设计和开发的针对具体应用背景的嵌入式计算机设备,它将操作系统和功能软件集成于计算机硬件系统之中,简单的说就是系统的应用软件与系统的硬件一体化,类似于BIOS的工作方式。由于嵌入式设备与通用计算机设备相比具有成本更低、能耗更小、可靠性更高、功能针对性更强、资源利用率更高、体积更小、重量更轻、维护使用更为方便等等众多优势,更加适合作为通信终端,近年来异军突起,己经渗透到了社会生活的各个角落。同时,由于去除了系统中不必要的部分,大大提高了系统的整体性能,并采用了专用的处理器,所以对于具体的应用,嵌入式设备的运行性能并不输给配置较高的通用计算机设备。