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Zigbee module, buffer ovrflw message

Aug 7, 2013 at 5:54 AM
There is an issue with the receive data in the ZIGBEE module. I am running the code on a Fez Cobra 2 board and after a few hours, anything from 1 to 48 there is a buffer ovrflw issue.

When I get the overflow, if I stop the debugger in the receive handler, the number of bytes returned is 16384 and it retrieves the same data each time. It never recovers from this state.

I am still working out why this happens and looking for a fix.
Aug 7, 2013 at 1:56 PM
Hi WeegieBoy,

what kind of ZIGBEE module are you using, manufacturing name, model? And if you check the bytes returned for the first requests, are they always ok?

Aug 7, 2013 at 5:16 PM
I am using the Series 2 modules.

I have not yet started to debug this at the code level but a quick check shows it is receiving the data most of the time. I have 2 Zigbee modules transmitting every second and I get the data for hours but eventually it gets this buffer overflow error. I know it is from the Zigbee as I disable all my other handlers and code and leave the Zigbee running on it's own it eventually gives this error. I can then see in the receive handler the 16384 bytes read.
Aug 7, 2013 at 5:20 PM
Edited Aug 7, 2013 at 5:20 PM
It looks for me that something doesn't get cleared, 16384 *2 positive int range. Could you try to send a larger payload to see if it happens then more frequently?

Maybe you can send me parts of your code? What methods are you using?