Hi,
I have some questions regarding the calculation of the time offset in FTSP:
"async event void PacketLastTouch.touch(message_t* msg)
{ [...]
footer->time_offset = local->event_time - call
PacketTimeStamp.get(msg);
[...] }"
local->event_time is the time of giving the Send-command in FTSP.
PacketTimeStamp is the time at the end of the MAC-SYNC at sender. Am I
right? Then, the calculation results in a negative value for an unsigned
integer. And that wouldn't make sense to me.
"command uint32_t TimeSyncEvent32khz.getTime(message_t* msg)
{ [...]
return (uint32_t)(footer->time_offset) + call PacketTimeStamp.get(msg);
}"
footer->time_offset is the time calculated at sender (see question
above). PacketTimeStamp is the time at the end of the MAC-SYNC at
receiver. Why should I add these times?
Thank you!
Regards, Marco
--
. Marco Langerwisch, B.Sc.
. ICQ 48125065
. www.web96.de
_______________________________________________
Tinyos-help mailing list
[email protected]
https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
