Thanks again, Philip. May I ask you another question: in genealogy of tinyos protocols, what MAC protocols are used in each platform by default? Several people asked this question in the forum, but no one give an accurate answer.
Thanks in advance! -----Original Message----- From: Philip Levis [mailto:[EMAIL PROTECTED] Sent: Friday, June 09, 2006 9:58 AM To: Adam Cc: 'TinyOS Help' Subject: Re: [Tinyos-help] How does CC2420 ACK implemented On Jun 8, 2006, at 9:39 AM, Adam wrote: > Philip, thanks for help. I was reading one paper from David Culler > regarding the immediate ACK in TinyOS. Just curious, was it actually a > packet, or through certain correlated signals or something? From your > email, it seems like a packet is actually sent out. Correct me if I > understand wrong. Depends on which platform. On the mica, it was not a packet, just a bit sequence. That is, it did not have any header fields. (MicaHighSpeedRadioM.nc:272 for ack tx, MicaHighSpeedRadioM.nc:366 for ack rx). On the mica2 and mica2 dot, this was the case as well (CC1000RadioIntM.nc:150). On the micaZ/telos families (CC2420 radios), the acks are part of the 802.15.4 specification, and are proper packets. Phil _______________________________________________ Tinyos-help mailing list [email protected] https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
