Forum Discussion
Occasional ContributorReading HPS EMAC counters not reliable
Final answer... Set the PR bit, not the RA bit. One does not need both, but the PR bit is the correct one if one wants counters to work. No documentation on this, sadly, but that's what we've deduced.
Occasional ContributorI guess I don't understand why that link is useful. First, it's for Stratix 10 devices, and I'm using Cyclone V. But assuming the EMAC designs are identical, that document is about how to integrate the PHY and configure the system.
My system "works." That is, I can send and receive millions of packets, at line rate (100 Mb/s in my case) with no issues. The only problem I seem to have is that when I read the counters in EMAC0, I see obviously wrong numbers. EMAC1 counters seem correct, however.
Is there a known issue with EMAC0 counters? What are some configuration issues with it that I may have overlooked repeated to the counters. The both seem to work very well in TX/RX, otherwise. I use the same configuration code for both devices. One works and the other doesn't.
