Dear all, I have observed an issue since I upgrade my project using lwIP 1.4.1, along with the update to SDK 15.2:
I have one application using UDP, one other using TCP. Both applications are having problems now, with frequent time-outs/reconnects. By using the former supplied lwIP version I did not experience something like that.
I can improve the behaviour by using a dedicated Ethernet adapter, without other traffic. Link speed in all cases is 1000Mbps.
I am using a standalone application without operating system. The application is doing nothing else then Ethernet handling at the moment, the main loop cycle time is always below 100µs, typical ~5us, in case messages are transmitted ~33us.
The Hardware I am using is the Avnet microzed board.
So far I didn't look into details of the problem, but now I need to fix this. I have the strong feeling it is related to the internals of the LwIP implementation, and I have no clue where to start at the moment.
Does someone have an advice how to start debugging on this?
I have seen more posts describing more or less similar issues,
Basically I have 3 facts for this Issue: - Before LwIP 1.4.1 or SDK 14.? this effect didn't occur (at least not noticeably frequent ) - Other Network Traffic has an Influence on this - TCP and UDP are effected
Hi Arne, I have noticed a similar problem when I have upgraded a project from SDK 2014.4 (using lwip 1.4.0 ver 2.3) to SDK 2015.3 (with lwip 1.4.1 ver. 1.2). With lwip 1.4.0 I have not problem. If I force SDK 2015.3 to use lwip 1.4.0 all is running good, but I don't know why. Did you have try lwip 1.4.0? Regards, Begos