【作者】 闫慧琦；

【导师】 李世臣； 张均东；

【作者基本信息】 大连海事大学 ， 轮机工程， 2004， 硕士

【摘要】 随着网络时代的深入，Internet已成为重要的基础信息设施，越来越多的设备需要接入Internet，但目前嵌入式微处理器接入Internet的解决方案确有很多种。论文课题详述了根据系统设备特点采用的8位高性能单片机加精简TCP／IP协议栈接入以太网的方案。论文中系统总体设计采用了大多数嵌入式设备开发的体系结构，介绍了系统的硬件实现和软件框架。细述了硬件设计时需注意的几个问题。软件设计中，为了增加系统的可靠性使TCP／IP协议栈的更好运行，课题的程序设计引入了嵌入式实时操作系统μC／OS.Ⅱ。文中详细介绍了嵌入式实时操作系统μC／OS-Ⅱ的任务调度机制和移植其到51系列单片机W78E516的过程及需要注意的问题，以及如何在嵌入式操作系统μC／OS-Ⅱ上嵌入TCP／IP协议栈，并对嵌入式TCP／IP协议栈各层协议的实现、接口函数和数据包的流入流出机制作了详细的介绍。 本论文的研究课题经过几个月的软硬件设计和调试，已实现了最初的设计目标。课题的实现对于众多领域里需要接入Internet的嵌入式设备具有很好的参考价值，它的顺利完成是向其他适用系统移用该技术的良好基础。更多还原

【Abstract】 With the development of network era, Internet has become the most important foundational information establishment, so more and more devices need to be connected in Internet, but the solutions for such devices as embedded microprocessor vary a lot. The solution for connecting the eight-bit micro-controller and tidy TCP/IP protocol stack in Ethernet, which are selected according to the specification of the device, is described in detail in this thesis. We designed the framework which could be used for most embedded devices and introduce the hardware and software of the system. Problems which should be paid special attention to when designing the hardware is also written up. In order to increase reliability of the system and ensure the well running of, μC/OS-Ⅱ is introduced during software designing. In this paper, we describe the task scheduler mechanism of the realtime operating system uC/OS- II and discuss the problems which we can meet in transporting OS to W78E516, how to embed the TCP/IP protocol stack in μC/OS-Ⅱ in detail. Lastly, the realization of all layers of TCP/IP protocol stack, interface functions, flowin&flowout mechanism of data pack are described particularly.After several months’ design and test of hardware and software, we gain our ends. This project is a good refrence for connecting embedded device in Internet in many fields, and it establishes a good foundation on this technology.更多还原