Pda Hardware And Software Platforms Based On Arm Design

In the civil and military realm the excellent PDA is greatly useful. The research on the PDA technology based on the opened platform has huge worthiness.The main research and development of this task is the PDA's hardware and software platform based on ARM and Linux.The CPU of its core module is S3C2410X embedded processor based on ARM920T core, around it has 64M SDRAM and 64M NAND Flash. The platform integrates some devices, such as the interface between human-machine (LCD and Touchpad), embedded GPS module. And it provides some extended interface such as USB Host, SD Card. The features of the platform are advanced, logical and extendable. It offers a dependable platform and an useful application to develop others embedded system.On this hardware platform, we deeply discussed and resolved the task and difficult problem be confronted with the course of Linux and embedded GUI porting. The paper firstly studies the development and implementation of the Bootloader (the Linux start-up guide code). Secondly, gives out the start-up analysis of the Linux and the course of porting the Linux 2.4 kernel and the YAFFS filesystem to the platform. And then, based on deeply graspes Linux device driver model, implementes the drivers sucu as LCD Framebuffer, Touchpad, USB Host. In the end, implementes the porting of the Qt/E GUI. Through porting of the Linux and the Qt/E GUI, the platform has been supported by graphics OS, so we can develop others PDA applications on this platform easily.Based on the platform, we givea out an application that is a personal map navigation system based on GPS. It provides a helpful application to integrated apply the source of the platform.