Embedded System Architecture Research And Development

This thesis discusses the Embedded System Architecture Reseach and Development, especially about the principle and method of developing RTOS-based Embedded System. It is easy to understand the concept of embedded system, but difficult to develop an embedded system successfully. The development is a complicated project.The development involves both hardware and software development tasks.The hardware of an embedded system includes the microprocessor (or microcontroller), memory and peripherals (AD/DA, clock, USB, network interface etc.). The hardware design includes the schematics, PCB layout design and hardware debugging. The result of hardware design is to have the particular function of, stable electric circuit.The software design is the major part of system development. And the software engineering crisis found in the software world will also appear in the embedded system world.In this thesis, the embedded system is based on RTOS. So, the point of the thesis is about operate system, especially the RTOS theories studies, answering to how to apply the RTOS into embedded system.By researching different operating systems such as uC/OS-II, Windows, Windows CE, FreeBSD. Minix. Linux, Lineo, Windriver, QNX, Mach, OSE, L4 etc., this thesis makes out the the development trend of the current operating system. These basic methods have the very important value to builid our own operating system.This thesis takes μC/OS-II v2.51 as example, porting it to ARM7TDMI processor and makes an sample app on Evaluator-7T board shipped from ARM Ltd.Also aμC/OS-II v2.51 8051 port is done and tested on the EasyPack.The above porting work can illustrate the process to develop a RTOS-based embedded system. And it is a good reference for embedded system developers to use this port in their project.