【摘要】 本文阐述了32位软核处理器NIOSII以太网接口的实现方法,结合SOPC可以灵活配置的特点,定制了硬件系统,给出了软件设计的主要流程及部分实现要点。在FPGA上构建SOPC系统,并在NIOSII上移植了操作系统uClinux,编写了软件驱动程序,通过PC向片上可编程系统发数据包,可以从以太网接口获得所有数据包的返回信息。实验表明,以NIOSII和DM9000A以太网控制器构成的网络化测控系统,结构简单、性能稳定可靠。更多还原

【Abstract】 The paper analyzed the technique to design the Ethernet interface for embedded device with 32-bit IP core NIOS II.With flexibility enabled by SOPC Builder,it built a Nios II hardware system.It also describes an overview of the architecture and software framework for the Ethernet interface.Build SOPC on FPGA,port OS uClinux on NIOS II,program Ethernet driver;receive all packets from Ethernet interface which was send from PC.It has been proved by the experiment that the embedded system which is implemented by NIOS II and DM9000A Ethernet controller is high reliable and simple architecture.更多还原