Ethernet Shield, W5100 Errata, UDP

Projects Networking, Protocols, and Devices
1

Hello all,

The W5100 chip has a sort of alarming errata posted on their site regarding a lockup during closely timed UDP transmit/receives (link at the bottom).

Does antbody know if this is an ongoing issue with the W5100? (Or does the manufacturer fix issues like this when they discover them)?

If it hasn't been fixed, it seems like this would mean that this chip has a high likelyhood of failure in high-bandwitdh (or high crosstalk) UDP scenarios. Why would anybody tolerate this class of malfunction in a new, out of the box IC?

Also, does the UDP library account for/mitigate this issue?

The link:

Thank you all for this wonderful platform!

-Paul B. Davis

2

Why would anybody tolerate this class of malfunction in a new, out of the box IC?

Don't know. You going to get it fixed for us PDQ?

3

Don't know. You going to get it fixed for us PDQ?

Um, obviously not. I don't think I'd be posting these questions in this forum if I was in a position to do that.

Congrats, by the way, on being the helpful smartypants that's going to be sitting at the top of the Google results for "W5100 Errata" in a few days.

Does anybody have anything useful to contribute? I think all the original quations still stand.

-Paul B. Davis

4

Do you still have this problem? I'm currently working on code for W5100 and came accross this thread. I've introduced a workaround for the problem, but I'm still nowhere near a complete solution.

Reply if you're still interested in discussing this.

Regards.

5

I actually never ended up using UDP with the Ethernet Shield, so I'm afraid I can't really comment either way on the problem.

I've introduced a workaround for the problem, but I'm still nowhere near a complete solution.

I assume that you've read over the recommendation in the 2.3 errata document? It reads to me like your only option with this chip is to camp out in your SEND primitive and wait for things to normalize before returning control to the caller.

Is your solution hosted on an Arduino, or are you just working with a W5100?

-Paul B. Davis