you need a sniffer trying to do this by getting somekind of tell tale from the code is very difficult.
you need to instrument the network. On Thu, Sep 12, 2013 at 2:55 PM, Srikanth Nori <[email protected]> wrote: > Hi Christian, > > In my experience at least, tracking down problems with ACKs has been > phenomenally difficult. I have no direct advice but a couple of > suggestions: > > On Fri, Aug 30, 2013 at 10:10 AM, Christian Renner > <[email protected]> wrote: > > > > We have 3 nodes: one receiver R and two senders A and B. Software ACKs > > are used. > > Have you tried with hardware ACK? Is there a reason you're using software > ACKs? > > > > > - I installed a sniffing node to see what really is on the channel: only > > the ACK from R to A (no ACK from R to B!) > > Just out of curiosity - what sniffer are you using? I used a cc2531emk > [1] and I know it missed some packets either because of radio > interference/losses (which makes sense) or potentially due to USB > issues (which doesn't, and can be very misleading). > > > The question now is if it is possible that a packet from the RXFIFO is > > obtained a second time and how this issue could be solved. > > Perhaps someone more knowledgeable than me should comment on this, but > my understanding is that this is very unlikely because of the nature > of the design. I believe the FIFO is emptied as it is read. > > > [1] http://www.ti.com/tool/cc2531emk > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > -- Eric B. Decker Senior (over 50 :-) Researcher
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