嵌入式Linux通用GPS接口的设计与实现

伴随着GPS的广泛应用,基于PC机的GPS由于其价格及功耗较高已不能满足社会发展的需要,嵌入式定位技术迅速发展起来。结合ARM处理器及嵌入式Linux操作系统的优势,提出一种基于嵌入式Linux平台的通用GPS接口设计方案。首先介绍GPS系统的定位原理与通信格式,在此基础上较为详细地阐述基于串行接口的嵌入式Linux与GPS设备的通信方案,最后给出基于中断模式的GPS信号接收与提取方法。该方案具有较强的通用性,可广泛应用于便携式GPS系统中。

Design and Implementation of General GPS Interface Solution Based on Embedded Linux Operation System

With the widely deployment of GPS,the system based on desktop can not meet the application requirements due to its high prize and high energy consumption,and embedded GPS technology is more and more popular.In this paper,a new kind of GPS interface solution uniting the advantages of ARM processor and embedded Linux operation system is proposed,which is based on embedded Linux platform.The paper first introduces the position principle and communication protocol of GPS,and illuminates the new COM-based communication solution between embedded Linux operation system and GPS system.An interruption-based GPS signal receiving-resolving solution is also illustrated.The solution can be used in various packed GPS systems.