[Tinyos-devel] TelosB as base station?

[David Moss]

We've seen something similar to this issue on linux, running a custom C++
serial forwarder.  We tried decreasing the baud rate and didn't see an
improvement.  I can't say whether or not we've seen the issue in Java or
even in Windows, but it's one data point anyway.

-David



-----Original Message-----
From: tinyos-devel-bounces at Millennium.Berkeley.EDU
[mailto:tinyos-devel-bounces at Millennium.Berkeley.EDU] On Behalf Of Matt
Welsh
Sent: Thursday, July 05, 2007 5:58 AM
To: TinyOS-Devel list
Subject: [Tinyos-devel] TelosB as base station?

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). 

Thanks -
Matt



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