Abstract: The touchscreen device and embedded desktop system based on graphic library have been widely used on embedded developing platform based on 32-bit CPU as the interface between people and machine. The process of designing and developing the embedded Linux desktop system on the Total5200 developing platform based on PowerPC architecture is introduced, including developing the Linux touchscreen device driver program and porting the Qtopia desktop system. The common problems in the process are analyzed. Means of realizing the embedded desktop system on JFFS2 file system are given.

Key words: embedded Linux, device driver, touchscreen, Qtopia desktop system

摘要： 基于32位处理器的嵌入式开发平台已广泛使用触摸屏设备和基于图形库的嵌入式桌面系统作为人机交互接口。该文介绍了在基于PowerPC体系结构的Total5200开发平台上的嵌入式Linux桌面系统的设计与开发过程，包括Linux触摸屏设备驱动程序的开发与Qtopia桌面系统的移植，并就其中常见的问题进行了分析。给出了整个嵌入式桌面系统在JFFS2文件系统上的实现方式。

关键词: 嵌入式Linux, 设备驱动程序, 触摸屏, Qtopia桌面系统

CLC Number: 

• TP311