The length of this timeout is radio stack specific. It's approximately 800us on the IRIS. It's actually hard-coded into RF230ActiveMessageP.nc. I suggest that you do not change it, unless you know what you're doing.
Janos -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Andrey Gursky Sent: Tuesday, July 22, 2008 4:21 PM To: Michael Schippling Cc: [email protected] Subject: Re: [Tinyos-help] Event sendDone done after the message is received? Hello! Janos has pointed me to the appropriate interface in T2. Michael, thanks for the information about ACK in T1. Interesting how long is this timeout in T2 by default and whether it can be simply changed? Andrey Michael Schippling wrote: > I can't opine on T2 because I don't use it. > I would hope that the semantics are similar, > in which case, with ACKs enabled, you should > see true/false on the indicator where false > would be a timeout. In T1 this increases the > time between send and done by the timeout length. > > MS > > Andrey Gursky wrote: >> >>>> If you have ACKs enabled and are sending point-to-point messages >>>> then sendDone() is signaled after the ACK is received or times out. >>>> Otherwise, w/o ACKs, and for BCAST messages, sendDone() is signaled >>>> when the transmitter is finished sending. >>> >>> Is it hopefully possible to distinguish between received ACK and >>> timeout? With value in error definitely not. But maybe there is some >>> function (for CC2420 and RF230), could be called in sendDone to get >>> the answer whether it was ACK or timeout? >>> >> >> Michael, I've seen your answer regarding ack, but it was for T1. I've >> forgotten to mention I use T2. It should be something like >> msg->..?..->cc2420.ack in sendDone() for MicaZ? And is there also ack >> for IRIS? >> >> Andrey > > _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
