http://forums.leaflabs.com/topic.php?id=656 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:23:10 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=656#post-3722 Wed, 23 Feb 2011 23:24:32 +0000 mbolivar 3722@http://forums.leaflabs.com/ <p>Stephen,</p> <p>Glad to hear of your success, and I hope (as seems to be the case, based on the other threads going on on this topic) that the fixed implementation is fast enough for your purposes.</p> <p>Also, while I merged the new code into master, I didn't write it; poslathian is the one who deserves your thanks. </p> http://forums.leaflabs.com/topic.php?id=656#post-3676 Fri, 18 Feb 2011 20:27:12 +0000 StephenFromNYC 3676@http://forums.leaflabs.com/ <p>Hello everyone,</p> <p>My last few hours have been very productive.</p> <p>A few months ago I started the thread 'Possible "hesitation" bug revealed using strcmp()' ( <a href="http://forums.leaflabs.com/topic.php?id=209">http://forums.leaflabs.com/topic.php?id=209</a> ).</p> <p>I was trying to create a sketch which would allow National Instrument's LabVIEW application to talk to the Maple (I have the older Rev 3 summer 2010 board). I was using the Maple's SerialUSB.println() and analogRead() function.</p> <p>Code which allows communication between LabVIEW 2009 and an Arduino Duemilanove board did not work on the Maple. I nicknamed the problem "21n" because the data transmission would halt at 21n intervals. The exact details are not important, because I am happy to report that the latest Maple IDE snapshot ( described in <a href="http://forums.leaflabs.com/topic.php?id=651#post-3635" rel="nofollow">http://forums.leaflabs.com/topic.php?id=651#post-3635</a> ) fixes the problem!</p> <p>LabVIEW 2009 and Maple are talking to teach other.</p> <p>The data transfer is really slow (about 120 data points a second), but at least I now have a system I can try to optimize. I have not used any of the bit shifting code recommended by others to transfer data using SerialUSB more efficiently:</p> <p><a href="http://forums.leaflabs.com/topic.php?id=639" rel="nofollow">http://forums.leaflabs.com/topic.php?id=639</a></p> <p>Thanks again, mbolivar for giving us a working implementation. Now that the SerialUSB code is working are speed optimizations low on the priority list or something which we will see in Maple IDE 0.1.0?</p> <p>Working on other code (not related to SerialUSB) might be good for the LeafLabs maple crew. The SerialUSB bug has taken a long time to solve.</p> <p>Have a great weekend.</p> <p>Stephen from NYC</p> <p>P.S. - I am using Windows XP SP3 on a Pentium III laptop </p>