The Realization of the LXI Bus Instruments´ Network Protocols Based on Nios II

A hardware structure of LXI bus instruments based on Nios II core is presented in this paper. By the translation of muC/OS II operating system and the lwIP stack on the Nios II core, the TCP and IP protocols are realized. The Web server and the Ethernet protocols are also realized by the programming interface supplied by the lwIP stack. Finally the paper tests the network protocols on the LXI module instrument for 1553B bus communication. By using the Nios II to realize the Network protocols of the LXI instruments, the processor and the peripherals can be embedded in one FPGA chip. The method makes it easy to design and upgrade the LXI instruments. At the same time the small instruments can be achieved.