Although I believe 802.15.4 says broadcast packets can be ack'd (to tell your transmitter that at least one other node received the packet), LPL disables PacketAcknowledgements before transmitting to the broadcast address. Ignoring acknowledgements, this allows it to deliver the broadcast packet for a full receive check period, allowing all receivers in the area to detect and receive the packet.
-David -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ravi Prasad Sent: Sunday, August 12, 2007 8:12 PM To: [email protected] Subject: [Tinyos-help] ACK in broadcast for CC2420LPL???? Hi, Can anybody comment on how does ACK mechanism work if a packet is broadcasted rather then Unicasted? CC2420LPL waits for ACK after sending a packet. After receiving ACK it goes to sleep again. In Unicast mode it can wait for ACK from the destination specified in the sent packet. But what will happen if packet is sent to Broadcast Address?? Regards Ravi ____________________________________________________________________________ ________ Luggage? GPS? Comic books? Check out fitting gifts for grads at Yahoo! Search http://search.yahoo.com/search?fr=oni_on_mail&p=graduation+gifts&cs=bz _______________________________________________ Tinyos-help mailing list [email protected] https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help _______________________________________________ Tinyos-help mailing list [email protected] https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
