Research And Implementation Of Embedded Graphic User Interface

In recent years,with application of embedded systems keeping expanding,embedded graphical user interface GUI(Graphical User Interface),as an important component of embedded real-time operating system,it is becoming more and more important.Embedded GUI has characteristics of terseness,elegant and convenient.When designing human machine interface with embedded GUI,it can improve efficiency,lower maintenance cost and enrich information of human machine interface.Thus,it has been used in most of the field.In this thesis,a project entitled "electronic order system" is studied.It is an application platform of embedded GUI which based on S3C2410A processor and embedded real-time operating systemμC/OS-Ⅱ.Firstly,this thesis introduces the design of hardware system,circuits and process of debugging,which consist of the three main aspects of hardware disign.At the same time,this thesis reserachs various functional modules of S3C2410A processor which based on ARM920T and ensure that the hardware interface circuits are under right and stable status.Secondly,in the area of software design,embedded real-time operating systemμC/OS-Ⅱand embedded GUI softwareμC/GUI are chosen,they ensure the funtion of real-time of system.We analyze core program ofμC/OS-Ⅱand introduce synchronization and communication mechanism,then focus on the process of transplanting embedded real-time operating systemμC/OS-Ⅱto hardware platform. Finally,we analyze the principle of transplanting process and the corresponding code ofμC/GUI,then configurate embedded graphical user interfaceμC/GUI and investigate several key factors such as 2-D graphical library and the output of Chinese characters etc.The experiment result shows that this embedded GUIμC/GUI application platform is definitely feasible.Compared with the design scheme of traditional human machine interface system,this application platform is a new attempt and has numerous advantages,such as lowering costs,high reliability and expanding function.In all,it has extremely potential applications.