On Monday 12 June 2017 14:02:28 Nicklas Karlsson wrote: > > Hello Peter; > > > > I have a problem trying to run linuxcnc on a pi 3b. > > > > I think it could be solved if somehow, I could generate a > > watchdog.has_bit=false coincident with enabling the machine, but > > hals parser refuses to allow even a tristate_bit module to access > > and reset the watchdog. > > I could vaguely remember a problem with the watchdog but can't > remember how I solved it. I run 2.8.x and there is now word watchdog > in neither the *.ini file nor the *.hal file. > > Do the real time threads work well on a raspberry?
Definite sometimes, Nicklass. latency-test actually shows less jitter with a stock kernel, but figures lie. I am getting joint following errors with the stock kernel and 15 minute maximum uptimes with what purports to be a realtime kernel. The stocker so far has just sat there and ducked everything I've thrown at it. So this particular rt build is a very fragile bust IMNSHO. This kernel is crap: rpi3-kernel-4.9.30-rt20-v7+.tar.gz, uptimes are as short as 30 seconds even with my air hose keeping everything at ambient. And latency-test results in the 2 millisecond jitter area. Ambinent in the garage is mid-70's F. unless I leave the big door open too long. 90F outside in the shade ATM. So what we need is an rtai patched kernel for armhf, that also see's all the mouse clicks and keyboard strokes. Most of these so-called rt kernels make me click the mouse 1-3 times, then miss the keyup, and the keyboard is even worse missing 75% of both the keydown's and worse yet, keyup's. I'd had the backspace key wipe out 4 lines of hal code before I can get it stopped. There's a good thing I don't have a tape running, some of the expletives are pretty incendiary when that happens for the 3rd time in the same minute. Thinking about breaking down and buying a udoo x86, but the kickstarter page looks like the only place. They keep ballyhooing the $89 price tag, but a buy button can't be found. Its also too big w/o starting over with an even bigger box. Has anyone here received theirs 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) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
