On Sunday 20 October 2019 22:00:39 Gene Heskett wrote: > On Saturday 19 October 2019 08:26:17 Gene Heskett wrote: > > On Friday 18 October 2019 17:21:21 andy pugh wrote: > > > On Fri, 18 Oct 2019 at 19:38, Gene Heskett <[email protected]> > > > > wrote: > > > > grep-ing thru the git checkout. there is only a units.h, no > > > > module. So it is looking like I will have to re-invent this > > > > wheel, > > > > > > Do you keep all your emails? Perhaps you can find where you got it > > > from by searching back through them. > > > > twouldn't do much good Andy. I didn't have to search, it was just > > there. I /THINK/ I saw it in the Ducumentation pdf, it scratched an > > itch I had at the time, and now its gone. Poof! I think, if I can > > find the right switching signals from axis, that I can re-invent > > that knob with a couple scales and a mux4. But I've not found the > > switch signal either in my checking while running on the table. The > > new docs are nice, but gained 100+ pages too. > > > > I'll need 2 status outputs, one from motion tallying machine g20-g21 > > mode, and one from axis, tallying view mode, inch or mm. > > > > Cheers, Gene Heskett > > As I posted on the lcnc forum just now, the rpi4 is now in the sheldon > control box as of about 16:30 this afternoon and running that lathe > well. Not w/o some mechanical and code drama though. Warm weather > promised for tomorrow and I should get the video working then. > Couldn't make the video work until I swapped monitors. I don't know what the rest of you think about HDMI, but I for one am damned sick and tired of how picky it can be, failing totally without even dotting an I in a log someplace to give us a clue why its failed.
Any way, some latency-test figures, using a servo thread only 1000000 period. With isolcpus=2,,3, about 46 microseconds, Using isolcpus=3, about 26 microseconds. Firing up glxgears runs it up to about 80 u-secs when pulled out to about 3/4 of a 1920x1080 screen. Beyond that size it does slow some by doing what looks like a skip frame, doing about 37 fps killing that and firing off the chromium & reading some news runs it to about 185 u-secs, but chromium has to set a new record for ssslllooowww... Installed FF-ESR and it peaked at about 190 u-secs. And ran noticeably faster playing a news story. Thats so much better than the pi3 could do that its not worth the effort to try and measure. So tomorrow I swap the AOC monitor for an ONN in the same bracket, same size. And I left linuxcnc-2.8.0 running just to see if it logs any overruns overnight. It hasn't yet. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
