[Tinyos-devel] CTP on eyesIFX

Philip Levis pal at cs.stanford.edu
Sat Sep 6 11:39:06 PDT 2008


On Sep 6, 2008, at 11:17 AM, Andreas Köpke wrote:

> Hi, I'm testing CTP on the eyesIFX platform and it kind of works.
> I just have one problem in conjunction with our testbed. As soon as  
> the
> radio modem starts up, all nodes start to send beacons like mad --
> I tried to adjust the time values but somehow it does not work. Any
> hints on which variables influence the beacon sending immediately  
> after
> the start of a node?

To some degree, they should send beacons like mad; they're trying to  
discover the topology and come up quickly. The beacon rate should slow  
over time.

The constants are currently set in CtpP.nc, as parameters to  
CtpRoutingEngineP. They should be enums defined in a header file (Om,  
can you fix this), but currently are just hardcoded constants (ugh).  
In the best case, they would be constants dependent on the expected  
packet time.

Phil





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