The Design & Realization Of Video Collection System Based On ARM

With the computer technology's development, ARM technology and embedded operating system appear. The area of embedded system is developing unceasingly, which includes industry control, consumption electron, network communication, scientific research, national defenses, medical treatment, navigation and spaceflight etc. This article combines the theory and the practice. By designing and debuging ARM system, we can master the embedded system design.This article adopted ARM920T chip as embedded system processor, and expatiated the design and development of the embedded system, including:Set up the cross compiling environment. The cross compiling environment is the name of all the embedded developing tools. In order to set up a cross compiling environment, we should compile and install the tool chains needed in development.Transplant of OS kernel: This is one of the main developing units of embedded system. In order to transplant the OS kernel, we should configure the kernel again to make it meet specific requirement, and then compile it again to generate the executable OS kernel image file.Transplant of file system: File system is the effective and necessary assistant of a operating system to manage the data. Transplant of file systems includes making file system's image, assigning the memory for them in a flash chip, and valid cooperate of file system and the embedded OS.Design of drivers: Driver is the bridge of OS and hardware to communicate. Design of drivers is to write functions which are used to read, write and control a specific hardware, and to offer a common interface for the OS.This article emphasizes on introduing the programmer of LCD drivers, compiling and transplant of USB camera drivers, and compiling the program of video display. In the end. compiling and transplant the webcam server application, realize the network camera.