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Hello, So I just followed the tutorial https://reference.digilentinc.com/learn/programmable-logic/tutorials/nexys-4-getting-started-with-microblaze-servers/start and generated a bit stream . The server starts as expected because this is displayed on the sdk terminal -----lwIP TCP echo server ------ TCP packets sent to port 6001 will be echoed back link speed: 100 DHCP Timeout Configuring default IP of 192.168.1.10 Board IP: 192.168.1.10 Netmask : 255.255.255.0 Gateway : 192.168.1.1 TCP echo server started @ port 7 However,there is unknown network detected at the level of Ethernet on my PC and the packets never received. The IP address and netmask at the level of my pc are shown below: 192.168.1.11 255.255.255.0 What could be the issue?
A UDP echo-server design uses on-board Ethernet port to create a data-link between FPGA board Nexys 4 DDR and MatLAB. Echo-server is capable of reception and transmission data packets using ARP and UDP/IP protocols. MAC address of FPGA board: 00:18:3e:01:ff:71 IP4 address of FPGA board: 192.168.1.10 Port number of the board, used in the design, is 58210. The echo-server will reply back to any data server, which uses correct IP4 address and Port number of the board. MAC address of the board is made discoverable for the data server via ARP protocol. This echo-server design doesn't use any input or output FIFO's as elesticity buffers,both in- and outgoing data packets are parsed/assembled in parallel with Rx/Tx processes, which allows better resource utilisation at the price of, probably, more complex design architecture. Design is implemented in VHDL using ISE by Xilinx. Below there are the source files for the echo-server projects along with .m file to transmit/receive data using MatLAB. Figure "wireshark_capture" illustrates the data traffic between FPGA board and data server (MatLAB); Figure "TxRx_Error" compares transmitted data against the data received from the board. UDP echo-server manual.7z UDP echo-server.7z