2011/11/2 zhengxiangwei <[email protected]> > Hi, > I am reading the code of CC2420. > I do not understand the difference between hardware and software > ack. And also I am wondering which part in CC2420 responsible for > generating ack frame. >
I haven't looked at the implementation details but I am familiar with the cc2420 and cc2520 chips. These chips have the capability of doing autonomous acknowledgments. I have heard there are problems when using h/w asks. But I haven't studied the issue. These asks are enabled by setting particular configuration bits in the chips. The most likely issue is for proper functioning of the protocols, s/w state machines need to have visibility of ack events. It isn't clear if TI provided this information or if the chips are programmed to issue these events. There are provisions for letting the software get visibility and respond appropriately. Those are s/w asks. eric. > Thank you. > > >  ! > ; Napoleon. > > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > -- Eric B. Decker Senior (over 50 :-) Researcher
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