FPGA-Based for Implementation of Multi-Serials to Ethernet Gateway

The Unmanned Aerial Vehicle (UAV) data link is composed of ground control station and airborne data terminal, all of which communicate in UART mode. In order to achieve multi-serials communication between UAV and ground control station, a method of multi-serials to Ethernet Gateway based on field programmable gate array (FPGA) +network interface chip is given. Firstly, this paper introduced the structure and working principle of system. Then the design of system´s hardware and software programming were described, as well analyzed configuration of every module and communication of serial ports in detail. The modules of transfer and receiver were completed by state machine. Finally, the timing simulation of two serial ports was shown. Compared with traditional methods, it possesses the characters of high-integration, low-power, and flexibility. It has been proved in the real test that the design can communicate with computer and work well, and achieve the prospective purpose. It is of much great practical significance and operational benefits.