[Tinyos-help] Application loses packets when using Low Power Listening on TOSSIM

[Michael Schippling]

can't help with the main LPL question, but search back on the
list for a few weeks for "ACK". I periodically send out "advice"
on that...
MS


Vinai Sundaram wrote:
> Hi ,
> 
> I notice that when I put the CC1000Radio (in tos/platform/pc ) in low 
> power listening(LPL) mode, the application loses packets although lossy 
> radio model is not used. The event sendDone gets called on the sender 
> side but the receiver does not receive the packet. When I put debug 
> statements to observe radio operations, I found that receiver mote does 
> not get a chance to run until the sendDone is called on the sender mote. 
> I set both the listening mode and transmit mode to the same value as 
> explained in the CC1000Radio Manual ( 
> http://www.tinyos.net/tinyos-1.x/doc/mica2radio/CC1000.html ).  The same 
> behavior happens irrespective of the mode except "always on" mode. When 
> I use the radio on always on mode, no packets are lost and everything 
> works fine. Why does LPL makes packets to be lost?  Also, how to enable 
> ack on CC1000Radio ( tos/platform/pc )?  Any pointers are appreciated.
> 
> Thanks,
> Vinai.
> 
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