Hello all : 2008/6/3 Miklos Maroti <[EMAIL PROTECTED]>:
> 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. i understand , when use the TimeSyncAMSend interface to send a packet , it also performs sender-receiver time synchronization besides send the packet. but i still have some puzzles . if the sender and receiver are turned on all the time and sleep periodically , there is no need of time synchronzation and the information of time have no significance to the motes. am i right ? what is the aim when you implement the driver ? do you want to use it for lowpowerlistening ? because the current implementation of lowpower listening is asynchronous , not synchronous (the sender know when the receiver wake up , and there is no need to send the wake up packet before send the useful data ) . i see the lpl of rf230 has been implemented , which kind does it belong to ? do it use time synchronization in implementation of LPL ? > > > 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). i think you have implemented the time synchronization , so i want to know the arithmetic of time synchronization you use . Do you know which implementation of time synchronization suppose rf230 ? > > > > 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. is rf230 supposed by CTP ? > > > Best, > Miklos > -- zhang jiwen
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