Hi All, I discovered the versions confusion that I have. TEP 123 talks about a link estimator in the directory 'le'. Mehmet sent me a link to a link estimator in the directory '4bitle' which has the updated files. However, this doesn't solve the CVS update error that still occurs. A new question emerges. Now we have two sets of the same files providing the same interface name. How does CTP know which interface to use? 'le' or '4bitle'.
Regards Islam Hegazy From: Mehmet Akif Antepli Sent: Monday, March 08, 2010 1:38 PM To: Islam Hegazy Cc: TinyOS help Subject: Re: [Tinyos-help] unsatisfied statements in 4bit link estimator Hi Islam, Just go to the following link, copy the code (Rev 1.17), paste into your corresponding file; http://tinyos.cvs.sourceforge.net/viewvc/tinyos/tinyos-2.x/tos/lib/net/4bitle/LinkEstimatorP.nc?revision=1.17&view=markup It is just a file, u don't need to update via CVS. Regards, On Mon, Mar 8, 2010 at 9:57 PM, Islam Hegazy <[email protected]> wrote: Yes, I checked my version number. It is v1.16 but dated 2009/03/13. v1.16 on sourceforge has the date 2010/02/04. I tried to update my files but I got the following error: " cvs update: move away tos/lib/tosboot/tinynode/hardware.h; it is in the way C tos/lib/tosboot/tinynode/hardware.h Error, CVS operation failed Tortoise Tip: CVS tried to create a new file and discovered that the file already existed. There can be several causes for this: 1) You have created the file locally, and someone else added a file of the same name to CVS. 2) Your sandbox has become corrupted (possibly due to interference from antivirus programs). To solve the problem: Rename or delete the affected files, then perform a CVS Update. " I didn't change/modify/create any new files in the directory of TinyOS2.x I tried to rename the the file where the update stopped but with no use. I am using TortoiseCVS on WindowsXP. Regards Islam Hegazy From: Mehmet Akif Antepli Sent: Saturday, March 06, 2010 4:44 AM To: Islam Hegazy Cc: TinyOS help Subject: Re: [Tinyos-help] unsatisfied statements in 4bit link estimator I think you r not using the latest version of LinkEstimatorP.nc You can find Rev.1.17 (latest version) in the following link: http://tinyos.cvs.sourceforge.net/viewvc/tinyos/tinyos-2.x/tos/lib/net/4bitle/ Regards, 2010/3/6 Islam Hegazy <[email protected]> Hi I was tracing the code of 4bit link estimator in LinkEstimatorP.nc when I came to the following 2 statements which can'tbe satisfied. In the function updateNeighborEntryIdx the following if statement calls the function updateNeighborTableEst if (NeighborTable[idx].rcvcnt >= BLQ_PKT_WINDOW) { updateNeighborTableEst(NeighborTable[idx].ll_addr); } Inside the updateNeighborTableEst function we have the statements minPkt = BLQ_PKT_WINDOW; totalPkt = ne->rcvcnt + ne->failcnt; then we have the condition if (totalPkt < minPkt) { totalPkt = minPkt; //statement 1 } which will never be satisfied because, at least, rcvcnt = BLQ_PKT_WINDOW (from the if in updateNeighborEntryIdx) . So, always total >= BLQ_PKT_WINDOW 'minPkt' The second statement is right after statement 1 in updateNeighborTableEst if (totalPkt == 0) { ne->inquality = (ALPHA * ne->inquality) / 10; //statement 2 } This statement is never satisfied because statement 1 always set totalPkt > 0. Another main reason for not satisfying this statment, updateNeighborTableEst will never be called if rcvcnt < BLQ_PKT_WINDOW which means totalPkt > 0 (remember totalPkt = ne->rcvcnt + ne->failcnt). I searched the code for other calls to updateNeighborTableEst but I didn't find any. I'd appreciate it if someone can highlight the importance of these 2 statements. Regards Islam Hegazy _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help -- Mehmet Akif Antepli Telecommunications Lab. D-217 Dept. of EEE Middle East Technical University -- Mehmet Akif Antepli Telecommunications Lab. D-217 Dept. of EEE Middle East Technical University
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