NetBurner Community Forum

A final update on this problem. It seems to have been caused by a bug in the arp code, which I am told will be fixed in the next release. It will only bite you if your code occasionally initiates sending a stream of packets to a unicast address. In our case we were using SysLog to send log messages....

On reflection, when the problem is occurring, the Netburner sends a LOT of ARP requests. Would it be normal to send out a continual stream of ARP requests if no response had been received? If not, is it possible that somehow an ARP request is getting stuck and being continually transmitted, and this...

Posting an update to this problem. We have updated to the latest NNDK (2.4) and the problem still exists. The symptom is that the ethernet receive interrupt function stops being called (as indicated by the counter RxIsr not incrementing, also frames_rx not incrementing) so that no ethernet frames ar...

Thanks all for your suggestions, I will look into them. For the record, we are using Rev 2.2 so we will upgrade to 2.4 ASAP. When hung the unit does not respond to pings nor Autosetup, nor can it ping other addresses. It can not open a TCP socket to another unit. I have not tried pinging itself but ...

Hi, We have an application in a solar power plant with around 150 Netburner Mod5270s installed on a network. Every so often, unpredictably, but maybe two or three times a week, one of the units will stop responding to Network traffic. The only way to restore communication is to restart the unit. Whe...

Mathieu, I tried your NTP setting tip on my Windows XP PC too, with a MOD5270. I am getting the same failure (although it worked a few times). I found the source for SetNTPTime in Nburn/system/ntpclient.cpp Stepping through this, the function GetNTPTime failes on the line: if(prNtp->Stratum==0) retu...

Thanks. The thing I had misunderstood was the lack of difference between pin number and interupt level. I had thought that these were two independent things, however it seems that EPORT pin n is hardwired to interrupt level n. That means pin 5 is a level 5 interrupt and pin 7 is a level 7 interrupt....

Oops, that stuff about the EPORT EPPAR register is wrong, it is actually 0 at startup as expected.

But the rest of the question still stands. Is there a trick to using IRQ5 and IRQ7?

Thanks

Matthew

Hi, We are developing a Netburner application for the MOD5270 that requires 4 external hardware interrupt signals. I have been developing using just two on EPORT pins IRQ1 and IRQ3 and everything works OK. When I try to run the same code using IRQ5 and/or IRQ7, whenever an interrupt is generated the...