基于uClinux的手持设备GUI应用系统的设计

Design of GUI System for Handheld Equipment Based on uClinux

手持设备现已被广泛应用于通讯、仪器、仪表、消费类产品等众多领域。如何快速开发手持设备的图形用户界面成为嵌入式系统开发中的一个热门课题。本文以uClinux操作系统和华恒HHDREZ328开发板为开发环境,介绍了一个手持设备的GUI应用系统的设计方法。文章首先分析了uClinux操作系统中的LCD设备驱动程序和LCD库函数,然后讨论了在LCD上显示汉字的方法。为了方便用户进行开发,文章提出并实现了一个脚本执行引擎,并给出了使用脚本来开发嵌入式系统的GUI应用程序的方法。

The handheld equipment becomes popular in the fields of communication, instruments and consumer products. So how to fast develop a handhold equipment＇s graphics user interface becomes a very hot research topic in embedded system development. Ihe article introduces how to.design a handheld equipment＇s graphics user interface based on uClinux and HHDREZ328 developing platform. The article analyses LCD driver and library functions in uClinux, then discusses how to realize Chinese character display on LCD. In order to make development easy, the article puts forward and implements a script executing engine, and expounds how to develop GU/applications by script in embedded system.