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Adventurer
Adventurer
4,900 Views
Registered: ‎05-24-2013

Lwip connection established, but can not Ping

Hello,

 

I am working on a custom board with ZYNQ, which has a Marvell 88E1111 chip for ethernet. Now I want to test if our PCB is okay. For that I adapted the ZC702 Ethernet Design and ran the lwip Echo Server example. This is giving me the following output:

 

lwipEcho.png

 

The green light of the network card on my PC also blinks periodically, when I let the program run. However I can not ping my board or connect to it through TeraTerm for getting the letters echoed back.

 

My question is, can I say that the hardware is working at least? Or do I have to invest more time to get the Lwip echo server example work properly?

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3 Replies
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Scholar
Scholar
4,861 Views
Registered: ‎09-05-2011

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Adventurer
Adventurer
4,851 Views
Registered: ‎05-24-2013

Hello sampatd,

 

Thanks for the answer. I checked my xtopology_g.c file, but I already have:

 

               struct xtopology_t xtopology[] =

               {

                {

                                0xE000B000,

                                xemac_type_emacps,

                                0x0,

                                0x0,

                                0xF8F00100,

                                0x36,

                },

 

I am using the Planahead 14.7 and then I just choose the "lwip echo server" standard example in SDK. Are there any known issues with this version of tool or do you have other suggestions?

 

In addition to that, I try to telnet my board through "telnet 192.168.1.10 7" after the PHY autonegotiation is completed. When I then analyze the outcome of this command in Wireshark, I see that my network card frequently tries to access my FPGA through the ARP. As the result of this telnet, it sends out a broadcast and asks "Who has 192.168.1.10?". However it does not get a response back and then asks the gateway, however the attempt also remains responseless. I also turned on the debug options for the lwip in SDK, so that I can see the packets. Indeed I can see the arriving packets in the console. I guess there is a problem in my TX path, since the board does not respond to the ARP packets and the RX path is okay, since I can receive packets. Could you please confim this or provide some more insight on this issue for me?   

 

 

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Visitor
Visitor
2,662 Views
Registered: ‎06-27-2013

Hi Conanind,

  Have you solved this problem? And how to solve the problem? I account the same problem.

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