In T2, on of the ways to set xmit power is by using the cc2420Packet interface.
CC2420Packet.setPower(msg, xmit_power); This sets the txmit power for the message you are sending. The value for the xmit_power depends on the radio you are using. For CC2420 it ranges from 1 to 31. HTH cheers chetan On Fri, Sep 12, 2008 at 1:55 AM, Michael Schippling <[EMAIL PROTECTED]>wrote: > Yes, you said that... > > Check the antenna connections (you should have gotten a 4" length > of wire with a MMCX connector on the end). Make sure it is firmly > plugged into the 'Z board. They snap in with a little pressure. > > Then make sure you have turned up the transmit power during compile > with a define. In T1 contrib/xbow/MakeXbowlocal this is: > CFLAGS +=-DCC2420_TXPOWER=TXPOWER_MAX > and that all your motes have the same radio channel setting, using > another define in the makefile (again in T1). I'm sorry but I don't > know how to do that in T2 so you'll have to do a little exploring. > It should be set to MAX by default, but who knows... > > If this still fails, then perhaps you will have to try some different > motes. There could be a hardware problem. > > MS > > > jiang chen wrote: > > The hardware is just two micazs,I want to make a communication between > > the two motes,one embedded the program 'BlinkToRadio' in > > cygwin\opt\tinyos-2.x\apps\tutorials\BlinkToRadio,one embedded the > > program 'BaseStation' in cygwin\opt\tinyos-2.x\apps\BaseStation,but i > > found the communication distance is just 0.5m~1m,do you know why ?Thank > > you for you patience. > > > > 2008/9/9 Michael Schippling <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED] > >> > > > > Assuming you have an antenna attached to each mote and are using > > something other than minimal transmit power, you should get upwards > > of 50meters under good conditions. The xmit power can be set in the > > makefiles...some study is necessary to figure out what define to use, > > based on TOS version and your hardware. > > > > MS > > > > jiang chen wrote: > > > > recently,i am working on using micaz to send and receive message > > in wireless,but i found the distance is too short,just about > > 0.5m,if the diatance is more than 0.5m,the packet loss a lot > > so i want to know is there any way in tinyos can change the > > transmit distance,or is there any way can increase the transmit > > power? > > > > to all ,thank you for you patience. > > > > > > > > > Johnson > > > > > sep,11 > > > > > > > ------------------------------------------------------------------------ > > > > _______________________________________________ > > Tinyos-help mailing list > > [email protected] > > <mailto:[email protected]> > > > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > > > > > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > -- Live the sunshine, swim the sea, drink wild air, be free. ---------- * --------------- * ------------ * --------------
_______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
