Research On Kernel Transplantation And Wireless Sharing System Implementation Based On Embedded Linux System

With the popularization of the Internet and the high-speed technology,Internet technology is developing exponentially.Under the background of face recognition,big data,and machine learning,embedded systems represented by low-cost and highperformance have also been widely used.Embedded system as a platform for application realization undoubtedly brings great advantages to developers.The combination of open source,stability and high-performance Linux operating system and embedded system has given many industries opportunities for rapid development.However,the Linux kernel has problems such as powerful functions,complex source code,and long startup time.In order to thoroughly apply it to embedded systems,researchers have conducted a lot of indepth research on it,and now it has made great progress.Secondly,the traditional projection method is based on wired connection.The projection process requires installation and wiring,which consumes a lot of manpower and material resources in actual use.If a meeting or teaching scene requires multiple users to project,each user needs to connect his computer to the projector or copy files to the host in advance.This process invisibly reduces the security of the host and the efficiency of user projection.To better promote digital development,this thesis focuses on embedded research and program design.The main work of this thesis is as follows:1.Research on the basic theories of embedded systems,including the historical status of embedded system,the mode and instruction set of embedded ARM processor,and the basic necessary environment for embedded development,which lays the theoretical foundation for the following of this thesis.2.Research on the basic principles of U-Boot loader,root file system and Linux kernel.Based on the functional requirements of the wireless sharing system,the embedded kernel was tailored and compiled,and it was successfully transplanted to the i.MX6 Q target platform.Subsequently,many experiments were carried out on the boot time of the transplanted kernel,and the source code was further optimized and the kernel image file was recompiled for the problem of too long boot time of the kernel.The experiment proved that the boot time of the optimized embedded kernel was longer than the original kernel boot time shorter,it provides a stable operating environment for the wireless sharing system implemented in this thesis.3.Based on the existing embedded system theory and technology,in order to solve the problems of wiring trouble,time-consuming switching and file copy security during the PC projection process,this thesis proposes a wireless sharing system based on embedded Linux system.The application solution of the company has clear design ideas,complete system functions,and stable performance.It can solve the problems of teacherstudent interaction in the traditional classroom and the security problems caused by frequent copying of resource files in the meeting place.It has research to a certain extent value and practical application significance.