[Tinyos-help] [reduce power]

[vazoumana fofana]

Hello,

i ve succeded in reducing power. I ve got a precision to ask : what s the 
meaning of the value 1. Which unit does it correpond ?

>From: Urs Hunkeler <uhu at gmx.ch>
>To: vazoumana fofana <zoumlander at hotmail.com>,  
>tinyos-help at Millennium.Berkeley.EDU
>Subject: Re: [Tinyos-help] [reduce power]
>Date: Fri, 13 Jul 2007 16:13:47 +0200
>
>Hi,
>
>This is what I previously wrote about reducing TX power:
>
>In Tinyos 2 with a platform with the cc2420 (such as MicaZ and the
>Tmotes), you can use either a flag in the makefile:
>
>CFLAGS += "-DCC2420_DEF_RFPOWER=1"
>
>or you can dynamically change the tx power at runtime (individually for
>every packet) with something like (wire in the CC2420PacketC module):
>
>call CC2420Packet.setPower(&rpacket, 1);
>
>You'll have to issue that call for every packet prior to sending it.
>
>Reducing the TX power to its minimum I get a maximum transmission range
>of roughly 3 meters under ideal conditions.
>
>Cheers,
>Urs
>
>
>vazoumana fofana schrieb:
> > Hello
> > *
> > I ve seen mails exchanged about this field but  i lost it.
> > Does somebpdy how i can  reduce power transmission on telos mote under
> > tinyos 2.x.
> > I want to experiment multi hop network so i need to reduce trhe range of
> > each mote.
> >
> > Thanks for any help.

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