[Tinyos-devel] Copying directly from RxFIFO to TxFIFO of CC2420

[Philip Levis]

On Aug 13, 2008, at 2:15 PM, Razvan Musaloiu-E. wrote:

> Hi!
>
> On Thu, 14 Aug 2008, Sagar Bijwe wrote:
>
>> I should have elaborated more. I just needed to know whether there  
>> exists a
>> control command (i could not find in CC2420 datasheet)  to transfer  
>> data
>> directly from rxbuffer to txbuffer. I don't want to use any  
>> external kit for
>> the purpose of programming CC2420. Driver level modifications can  
>> be handled
>> once i know that such a command exists. According to current  
>> implemenation,
>> we have to first copy pkt from rxbuffer to msp & then to txbuffer  
>> (this
>> makes spi bus bottleneck). I want to remove this critical path.  
>> Thanks for
>> your response anyway.
>
> If this is what you want to do then you'll probably find relevant this
> paper:
> 	http://www.sics.se/~adam/osterlind08approaching.pdf

Double-buffering still requires buffering.

Phil