[Tinyos-help] time synchronization

[Miklos Maroti]

Hi Zhang,

> Hello all :
>    i see some files in chips/rf230 , i see some words like TimeSyncPacket ,
> so i think maybe the time synchronization is implementated in rf230 , am i
> right ?

Yes. The PacketTimeStamp interface is used to access the transmit or
receive time of the packet. If you want to embed a time stamp inside
the packet then you need to use the TimeSyncAMSend and TimeSyncPacket
interfaces of the SimSyncSend component.

>    if yes , i want to know which arithmetic does it use ?

What do you mean? The time resolution is currently 1 millisecond
(continnuous) and 1 microsecond (stops of the mote stops).

> maybe there are a corresponding paper , can someone give me a reference ?

Not yet. a TEP is coming out soon. You should have no problem using
the components I pointed out. The interface files have the necessary
documentations.

Best,
Miklos