[Tinyos Core WG] packet time stamping/sync for CC2420

[Philip Levis]

On Jun 16, 2008, at 1:28 PM, Miklos Maroti wrote:

>> By default, nodes will use I-Frames. If T-Frames are being used,  
>> there will
>> be a #define for the variable
>>
>> TFRAMES_ENABLED
>>
>> I'm checking in CC2420.h and tframe.extra now, take a look.
>
> I had 6LOWPAN support for IRIS, but only if you define the
> IEEE154_6LOWPAN variable. I am suprized that the I-frames are the
> default, do people really use them? The TEP does not say a thing about
> TRFAMES_ENABLED!
>
> Ok, so the expected behaviour should be:
>
> Outgoing messages should set the NALP network code for tinyos: 63
>
> Incoming messages should be checked, if the NALP code is incorrect
> then you drop them, right? No snooping in this case.

Correct. Well, you can dispatch on them if you want. Take a look at  
chips/cc2420/lowpan. You might even just be able to for the most part  
copy this code.

When do you think you'll have this checked in? I'd rather hold off on  
the code freeze until you have.

Phil