[Tinyos-devel] [Tinyos-help] testftsp problem

[Branislav Kusy]

hi john,

please look at the attached modified CC2420 files and let me know if it 
looks ok. this is a fix for the radio stack bug we discussed a while ago 
at the core meeting.

here is the bug description:
http://docs.tinyos.net/index.php/PacketTimeStamp_CC2420_bug

also, the following tinyos-devel discussion thread can provide more 
information on the how we tried to fixed the bug:
http://mail.millennium.berkeley.edu/pipermail/tinyos-devel/2008-August/003339.html

micaz now works fine, but there are still some problems with tmote. i 
believe, these are timer related, rather than radio stack related.

please, let me know if the code looks fine and i can commit it to the 
main tree.

janos, yi-tao. it'd be great if you could test your code with this new 
code (just copy the two files in your app directory) and see whether the 
problems you were seeing disappeared.

brano

Janos Sallai wrote:
> Brano,
> 
> Have you checked in the fix for the CC2420 timestamping to CVS already? 
> I have ported FloodRoutingSync to T2.1 and would need to get it working 
> on the telos.
> 
> Janos
> 
> On Mon, Nov 17, 2008 at 2:47 PM, Yi-Tao Wang <yitao at cs.ucla.edu 
> <mailto:yitao at cs.ucla.edu>> wrote:
> 
>     Hi everyone,
> 
>     I'm running into a weird problem for the testftsp application when I
>     run it on 5 tmotes. At random times, one of the motes would calculate
>     a huge skew value. Here's the full report from the application:
> 
>     1225993482936 3 9124 2276438 2276781 0 0 2 63 8
>     1225993482936 2 9124 2276775 2276779 0 0 2 64 4
>     1225993483170 3 9125 2276681 2277024 0 0 2 63 8
>     1225993483170 4 9125 2277000 2277024 0 0 2 63 8
>     1225993483170 5 9125 2273729 2277024 0 0 2 63 8
>     1225993483419 2 9126 2277271 2277275 0 0 2 65 4
>     1225993483419 4 9126 2277252 2277276 0 0 2 64 8
>     1225993483419 5 9126 2273981 373905981 2230228928 0 2 64 8
>     1225993483419 3 9126 2276933 2277275 0 0 2 64 8
>     1225993483653 5 9127 2274228 381883316 2230228928 0 2 64 8
>     1225993483653 2 9127 2277518 2277522 0 0 2 65 4
>     1225993483653 4 9127 2277499 2277523 0 0 2 64 8
>     1225993483653 3 9127 2277180 2277522 0 0 2 64 8
> 
>     It causes the global time to be calculated incorrectly. Does anyone
>     know what's going on and how I can fix it?
> 
>     Thank you,
> 
>     David
>     _______________________________________________
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>     Tinyos-help at millennium.berkeley.edu
>     <mailto:Tinyos-help at millennium.berkeley.edu>
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> 
> 
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