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Honored Contributor
Honored ContributorStrange Ethernet behaviour
We currently have a a design which is based heavily upon the Cyclone 3 FPGA dev kit. However, at this point it is very difficult to return to the Dev Kit to test the software some am hoping someone h...
Altera_ForumHonored Contributor
Honored ContributorYes, I had sometimes your same symptoms with the "No free buffers for rx" messages and crash.
This happened in the debug phase when my application couldn't store/process all the received data. This was typical in a situation where I had another high priority task that blocked the network task for a sensible amount of time. I think the crash was caused by sgdma which kept on loading incoming data into memory, so generated an overflow. In rare cases I had the same problem when application accepted the first connecion or when the debugger restarted the program after hitting a breakpoint. For these I didn't find an explanation. I never tried if the same problem is triggered by a rapid connect/disconnect.
