I'm sampling rssi values in my application, monitoring when a transmission occurs. However, I'm not sure of the time it takes to transmit a packet.
So far for a standard packet I believe: Preamble is 8 bytes Sync is 2 bytes Message is between 7 and 36 bytes. In the standard Mica2 stack, using CC1000RadioIntM 1.32 (latest version) does it only send the packet once? I may have the MAC implementations mixed up, but I recall reading about sending three copies back-to-back for low power listening, but I'm getting timings that would seem to indicate only one copy of the message. I want to make sure I'm measuring correctly. Am I also correct in thinking the ACK length is only two bytes? Finally, I'm using timestamps from SysTime. Am I correct in understanding that it increments at 921.6 KHz, because the prescaler part of the comment has me confused, and if I have this wrong, my timings would be off. (TinyOS 1.1.15/WindowsXP/Mica2 433/MIB500) -Ben -- The difference between the right word and the almost right word is really a large matter- it's the difference between a lightning bug and the lightning. -Twain _______________________________________________ Tinyos-help mailing list Tinyos-help@Millennium.Berkeley.EDU https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
