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

Abstract

A hardware structure of LXI bus instruments based on NiosⅡ core is presented in this paper. By the translation of µC/OSⅡ operating system and the lwIP stack on the NiosⅡcore, 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 NiosⅡ 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.