Re: [lwip-users] LPC1769 ethernet problem

[Fotis Panagiotopoulos]

Sergio can you suggest me such a switch with debugging port? Something you have tried maybe?....

My intention wasn't to change the WAN, but essentially the router, thinking it may block the traffic. I have followed the code extensively, I did tried to place various brakepoints, and to turn on the debugging functionality of LWIP, but it pointed me to nothing. Everything seemed absolutely normal. I am sure LWIP delivers the packet to the low-level driver, which in turn loads the data to the memory and starts the DMA engine of my MAC controller, but I can't figure out what happens next. As I stated I see no traffic, so I cannot be sure where the communication breaks.

Seems I need a debugging device.

Fotis Panagiotopoulos

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On Mon, Jul 25, 2016 at 10:13 PM, Sergio R. Caprile <address@hidden> wrote:

1: you need a hub or a switch with debugging/monitor port to see traffic from all ports. Connect your PC and your device to a hub or one of those switches (correctly configured) and you will see what happens in your network. If you need help, post a capture file.
2: trying different WANs does not make sense on lwIP. If you have a problem, try putting breakpoints and analyzing what you see. You should be able to follow the function calls and observe return codes. If you need help, post your piece of code and your result codes. you can also enable debug output and trace what lwIP does.

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