[Tinyos-help] why Oscilloscope readings are always zero?

[vaasu]

the straight line is the voltage value of the mote batteries...and ofcourse
the value will be constant .... run the oscilloscope for sufficient time...
you will see a drop in the voltage level.....

zoom the voltage range of y-axis.. you might see little fluctuations....
but voltage level cant rise unless you change batteries...

On Thu, Apr 3, 2008 at 11:39 AM, Hazem Al- Ojeh <
hazem.alojeh at student.adelaide.edu.au> wrote:

> Hi all,
>
> I am up to lesson 5 for tinyos 2.0 tutorials. Anyway I followed all the
> steps
> and everything seems to working find, however, when I actually ./run the
> Oscilloscope program, the results are always 0! like i get a straight line
> for
> all the connected sensors, where in the figure in lesson 5, shows some
> fluctuation going on. Is it supposed to be like that? Given that I
> followed the
> lesson instructions without changing anything.
>
> -I installed the program on 3 motes.
> -BaseStation on another mote which is sitting on the board.
> -started a SerialForwarder
>   $ java net.tinyos.sf.SerialForwarder -comm serial at COM1:57600
> -and i also opened another window to read the messages being sent and so
> on
>   $ java net.tinyos.tools.MsgReader -comm sf at localhost:9002
> OscillosocopeMsg
> and it was sending the right everything I suppose, however the readings
> array
> contained similar readings most of the time, i.e
> [readigs=0x8a 0x89 0x8a 0x8a .....], so I thought maybe thats the reason
> why i
> am getting a straight line at value 0 on the y access.
>
> So anyone knows why I am getting straight lines for all the sensors
> readings at
> 0?
>
> thank you all.
> _______________________________________________
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>
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