[Tinyos-help] small RSSI reading

Razvan Musaloiu-E. razvanm at cs.jhu.edu
Mon Feb 4 07:57:16 PST 2008


Hi!

On Mon, 4 Feb 2008, Daria Wotzka (Geb. Zmarzly) wrote:

> Dear Tiny OS Profs,
>
> following situation using tinyos 2.0 (one of the old release):
> One sender and two receivers are placed very close to each other (~0.5
> meter).
> Sender transmit packets. Both receivers read rssi values. In general
> values are ok and correlate, but sometimes and it is not a singular case
> following happens:
> one receiver read ~240 the other ~6.

The RSSI is represented in 2's complement:
 	http://en.wikipedia.org/wiki/2%27s_complement
240 and 6 are not that far apart in this representation.

--
Razvan ME


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