Hi, Are you sure it's 2.45GHz? It should be 2.48GHz (channel 26, 2.45 is channel 20) - that can be a problem.
Andris On Thu, Mar 26, 2015 at 5:23 PM, jobishjohn ips <jobishjohn....@gmail.com> wrote: > Hi, > > Sorry for the inconvenience due to a lengthy mail. Requesting you to > spent 2 minutes on this issue. > > I have assembled a telosB board with the help of layout given in > http://www.tinyos.net/scoop/special/hardware to continue with my research > studies. > > Let me call this as “test telosb board”. I also have some other working > telosb boards which are purchased from a local distributor. > > The “test telosb” does not work either as transmitter or receiver. > Please give me some directions to debug this board. My trials as listed > below (I use tinyos 2.1.2 on Ubuntu). > > *Debugging method**1 * > > I have programmed one *purchased telosb as **transmitter* and the *“**test > telosb board” **as receiver**.* > > The transmitter is programmed to broadcast periodic AM messages. > > The receiver is programmed with the standard “Basestation” application. > But the receiver is not receiving any data. > > While debugging, I could find that the “SFD” pin of the cc2420 in the > test board is NOT going into active state (high) at all. > > The nesC program running on the transmitter & the receiver are tested > using purchased telosb boards. In this case everything works fine. > > *Debugging method2:* > > I have a *transmitter (test telosb board)* and a *receiver **(purchased > telosb**)*. > > Receiver is programmed with “Basesation” application. The transmitter is > programmed to broadcast some periodic AM messages. > > The nesC program running on the transmitter signals the event > “AMSend.sendDone” > with success. > > In this case , the “SFD pin ” works as expected (Fig 15 in cc2420 > data-sheet). Also I am able to measure a transmission power of approx. 0 > dBm around 2.45GHz band using a spectrum analyzer. > > But the receiver does not receive any data. > > Other than radio, everything works fine in the test telosb board. > > Thanks for your valuable time. > > Regards > > John J > > > > > > _______________________________________________ > Tinyos-help mailing list > Tinyos-help@millennium.berkeley.edu > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help >
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