Transplantation And Cutting Experiment Research Of ECos Embedded Operating System Based On Arca GT2000

Embedded operating system eCos (embedded Configurable operating system) is a source code of public and configurable real-time operating system . It is stable and reliable with the advantages of the perfect functional architecture and the low development costs in operation system. At the same time, it possesses the advantages of highly configurable, extensible, portable and compatible third-party software etc. Embedded operating system eCos hardware abstraction layer of transplantation is the foundation of eCos system development. According to the target platform the underlying hardware abstraction layer (HAL) source code is to be write and modified in transplantation.At the same time necessary external device driver code is to be modified and transplanted in main job.The topic first is summarized in this paper, the background material is introduced and eCos system application development environment for embedded operating system is set up. Based on the analysis of the embedded operating system eCos start-up process and of embedded operating system eCos kernel source code, the main part of eCos Interrupt handling and exception handling, memory management and operation mechanism is discussed and an overview Redboot system application is introduced. At the same time, the application development environment is build. The system structure is expound based on Arca hardware abstraction layer (HAL) and the transplantation and configuration principle of the embedded operating system eCos is declared. Account of the Arca GT2000 processor, the eCos'transplantation process and problem is explained, and real-time testing for eCos is implemented, the device driver test procedures is designed and tested based on eCos system.Based on the study of the embedded technology and the actual research of eCos real-time operating system structure and component frame, though the transplantation of eCos real-time operating system hardware abstraction layer and the device driver code, embedded system application based on eCos has been developped with certain practical significance.