The solution of Ethernet interface based on the core of ATmega128 and its architecture of hardware was illustrated in this paper. The operating system of μC/OS-II was transplanted to the system and the improvement of TCP/IP protocol was implemented. The paper dwelled on the module structure of TCP protocol which based on message and function of μC/OS-II. Finally, the test of systemic performance was presented.
This paper describes the design and implementation of an ARM based embedded operating system micro kernel developed on Linux platform with GNU tool chain in technical details, including the three-layer architecture of the kernel (boot layer, core layer and task layer), multi-task schedule (priority for real-time and round-robin for time-sharing), IRQ handler, SWI handler, system calls, and inter-task communication based on which the micro-kernel architecture is constructed. On the foundation of this micro kernel, more components essential to a practical operating system, such as file system and TCP/IP processing, can be added in order to form a real and practical multi-task micro-kernel embedded operating system.
Operating system support, protocol stack with key concerns and testbed facilities for IoT: A case study perspective
