基于arm的嵌入式软硬件系统设计与实现-通信与信息系统专业论文.docxVIP

ABSTRACTABSTRACT ABSTRACT ABSTRACT With the development of communication technology,computer technology and microprocessor technology,embedded system are widely applied to many fields，such as national defense，communication，medical treatment and people’S daily lives． Embedded system has become a popular industry in nowadays．In order to study and research embedded system，many universities are planning to teach embedded system． For this purpose，this paper introduces the design of embedded platform based on ARM， which is mainly used in teaching and further developping． In this thesis，the architecture，feature，background of the embedded system and ARM microprocessor are introduced at first．Then by analyzing the requirements of the system，this paper introduces the design proposal of this embedded platform．After that， the design and debug of the hardware and software system iS introduced，which includes the development of BootLoader,the transplantation of the Linux embedded operation system and the development of root filesystem．Then，this paper introduces the development and debugging of the LCD driver and touchscreen driver in Linux operation system and describes the principle and architecture of the drivers．At last，the implement of embedded GUI on this platform is introduced． Through the research of this topic，the embedded platform has achieved our goals． The experimental system for teaching embedded system is implemented．The test results show that the embedded platform call run successfully and stably．And also the embedded platform provides most of the common interface，it Can be used in many field for the future development． Keywords：ARM，Embeded System，BootLoader,Linux Device Driver,QT Ⅱ 图目录图目录 图目录 图目录 图2．1嵌入式系统架构 ．．6 图2．2硬件平台布局图 ．．9 图2．3嵌入式软件开发流程 ．．9 图3．1$3C2440结构框图 9 图3．2硬件平台框图 ．．9 图3．3 CPU子板结构框图 ．9 图3．4 3V3转1V2电路 ．9 图3．5晶振电路 ．．9 图3．6 SDRAM接口电路 9 图3．7 NAND Flash接口电路 9 图3．8子母板接口电路 9 图3．9兼容母板结构框图 ．．9 图3．1 0 5V转3V3电路 ．9 图3．11复位电路 ．9 图3．12以太网接口电路 ．9 图3．13 RS232串行接口电路 ．9 图3