The GPS Orientation Software Programming Based On ARM 9

Nowadays,automobiles act as one of the most important vehicles in society. According to statistics,there are 32,000,000 cars in China,and the number will reach 55,600,000 in 2010.But the number of cars which use GPS(Global Positioning System) for navigation is still rather low.Therefore,the navigation for cars will become one of the biggest potential markets for GPS.This subject designs an embedded GPS orientation system which is based on ARM 9 and used Windows CE as Operating system.This subject is divided into three parts:the design of hardware platform,the design of GPS orientation software,the design of digital entertainment.This paper's main task is to design a GPS orientation system,which includes:1.The transplantation of Windows CE:WinCE 4.2 is selected in this paper, Transplanting WinCE to the platform is needed2.Construct a platform for software development:Select eVC(Embedded Visual C++) as complier to develop software.Besides installing eVC,install several development tools in a particular order to insure that the software's design and debugging can be carried out smoothly.3.The hardware design of serial communication between GPS module and platform,and the hardware design of power supply for GPS module.4.The software design for serial communication between GPS module and platform(using MFC):GPS module uses serial communication to send geographic information,therefore use eVC to design a serial communication program,and control serial port by using serial API.5.The software design for processing information received from GPS module,and displaying real-time orientation information by using MFC:use eVC to design a information processing program,and display orientation information in both numeric and graphic format.6.The software design for GPS orientation program(using standard C interface): use eVC to design a GPS orientation software with graphicalinterface.As this program uses standard C interface rather than MFC,this makes the program more transplantable.Its main function include:the serial communication between GPS module and embedded system,the processing of geographic information received from GPS module,the display of real-time orientation information.7.Breakpoint debugging the program and debug the program in platform to make sure that the program can operate regularly and achieve function expectably.