[Tinyos-devel] TelosB as base station?

[Matt Welsh]

Good points - we'll try these and let you know.


On Thu, 2007-07-05 at 07:45 -0700, Philip Levis wrote:
> On Jul 5, 2007, at 5:58 AM, Matt Welsh wrote:
> 
> > Hi folks,
> >
> > We have been having continued problems with using a TelosB mote as a
> > base station and I'm wondering if there's something we're doing wrong.
> > Basically, using BaseStationCC2420 on a TelosB along with the C-based
> > serialforwarder is just incredibly unstable. It seems to hang after
> > bursts of packets and we usually have to restart the base station  
> > mote.
> > (The code in support/sdk/c/serialsource.c also prints the quite useful
> > error message 'foo' - apparently when no data is available on the  
> > serial
> > port - we commented that out long ago.)
> >
> > Not sure if this is a problem with the TelosB, the sf, or both. I
> > remember having similar problems with TinyOS 1.x and am somewhat
> > surprised this hasn't been resolved in 2.x - or maybe it has and we
> > don't know the fix?
> >
> > We do find that MicaZ motes are very stable as base stations (running
> > for weeks at a time without any hang).
> 
> Two simple questions:
> 
> 1) Does stability increase if you lower the telos speed to 57600?
> 2) Does stability increase if you use the Java serial forwarder?
> 
> Phil