I know it does not change - should not - so, it is either a hardware bug, or a "software feature" - whatever it is, it results in 1 milisecond updates, instead of 20 microseconds - my thought was that it could be the sudden change by 5% in the feed rate in zero time (not sure how this is applied in the code). If division by time would be involved, we could get large numbers... not sure if the system tick is set to 1ms or 0.5ms - if the former, my theory was it could be something around that.
One explanation is that moving the slider can cause more than just one write to the feed override rate, thus blocking some calculations or counters, depending on how is this done. I was looking now into HAL documentation, stepgen.0 does not have a feed override connection, but the update_freq() has some d/dT calculation from position-cmd. I need to learn how to use the probing utilities probably, right? If one could hook position-cmd input to stepgen, start recording and quickly jump on the override slider Or it can be something simpler? code from stepgen.c /* this periodns stuff is a little convoluted because we need to calculate some constants here in this relatively slow thread but the constants are based on the period of the much faster 'make_pulses()' thread. */ hmm, still not sure. On 12/24/06, Jeff Epler <[EMAIL PROTECTED]> wrote: > Moving the "feed override" slider does not modify the 'period' of the > HAL functions. 'period' is the approximate number of ns between > invocations of a realtime thread, and does not change during an emc2 > run. > > Jeff > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys - and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers > ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
