[Tinyos-help] oscilloscope

Joe Polastre joe.polastre at gmail.com
Tue Mar 8 16:13:37 PST 2005


You should use tinyos-1.x/contrib/moteiv/apps/Oscilloscope

It samples all the sensors, sends them out, and has a README for how
to convert to SI units.

-Joe


On Tue, 08 Mar 2005 17:08:45 -0700, Matt Stacey <mstacey01 at gmail.com> wrote:
> Like most other people you get emails from, I am a new tinyos user. I
> am using the oscilloscope example on a telosb mote. Here are some of
> the readings I get
> 
> 1A 01 08 93 FF FF FF FF 0A 7D 01 00 E4 02 00 00 72 03 72 03 72 03 73
> 03 73 03 73 03 74 03 74 03 74 03 74 03
> 1A 01 08 94 FF FF FF FF 0A 7D 01 00 E4 02 01 00 7A 1A 2B 1A 2B 1A 2B
> 1A 2B 1A 2A 1A 2A 1A 2A 1A 2A 1A 2A 1A
> 1A 01 08 95 FF FF FF FF 0A 7D 01 00 EE 02 00 00 74 03 74 03 74 03 74
> 03 74 03 74 03 74 03 74 03 74 03 75 03
> 1A 01 08 96 FF FF FF FF 0A 7D 01 00 EE 02 01 00 7A 1A 2A 1A 29 1A 2B
> 1A 2A 1A 2A 1A 2A 1A 2A 1A 2A 1A 2A 1A
> 
> Now I believe I can distinguish between the temperature and humidity
> (I've taken out all of the other readings), but I can't seem to
> understand how I get the temperature and humidity. I am using both of
> the formulas (temp = -39.6 + .01*SOt, but that would be -39.6 +
> .01*(0x7A1A), which turns out to be over 100 degrees celsius. I know
> that isn't possible so I am assuming I am doing something wrong.
> 
> Can I get help understanding this?
> 
> Thanks
> Matt
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