On Monday 26 October 2020 00:27:31 Peter C. Wallace wrote: > On Sun, 25 Oct 2020, Gene Heskett wrote: > > Date: Sun, 25 Oct 2020 23:54:34 -0400 > > From: Gene Heskett <ghesk...@shentel.net> > > Reply-To: EMC developers <emc-developers@lists.sourceforge.net> > > To: emc-developers@lists.sourceforge.net > > Subject: Re: [Emc-developers] pwmgen, mesa version, man page is? > > > > On Sunday 25 October 2020 22:51:15 Peter C. Wallace wrote: > >> On Sun, 25 Oct 2020, Gene Heskett wrote: > >>> Date: Sun, 25 Oct 2020 21:50:25 -0400 > >>> From: Gene Heskett <ghesk...@shentel.net> > >>> Reply-To: EMC developers <emc-developers@lists.sourceforge.net> > >>> To: EMC developers <emc-developers@lists.sourceforge.net> > >>> Subject: [Emc-developers] pwmgen, mesa version, man page is? > >>> > >>> Greetings all; > >>> > >>> Some confusion about useing the mesa pwmgens in a 5i25 with the > >>> 5i25_7i76_1px2d.bit file loaded. this bitfile fails to wire up > >>> the dir output, but is as close to driveing a stock bob on p2 as > >>> there is. > >> > >> I dont think this is the case, Both PWMgens have direction outputs > > > > If my tracing is correct, pwmgen.01's dir s/b on the std bob at > > Zdir, adjacent to its output on Zstep from the pwmgen.01. Its dir > > is nowhere to be found that I can find. pwmgen.00 s/b step/dir4 in > > both polarities. These may be working but I'm haveing a hard time > > correlating the mouse clicks to check both and hold a meter or scope > > probe at the same time. > > I just tried the 7i76_1px2d pinfile source code on a 7I92 > and it works as expected: > > setting PWM 00 or 01 to a 0.5 value results in a 50 % duty cycle > waveform with DIR low > > setting PWM 00 or 01 to -0.5 value results in a 50 % duty cycle > waveform with DIR high
But. But. I don't have a 7i92, nor do I have a free ethernet port to drive it with. I have a std sainsmart bob on the 5i25's p2. The crimp on cable was bad at first but thats been repaired with new connectors. That pwmgen.01's dir output s/b on the 5i25.0.gpio.021, aka header pin5, aka YDIR. So I've edited the .hal slightly different, and I can now see the signals at the 5i25.0.gpio.006.in and gpio.007.in for axis A with a halmeter. And dittos for pwmgen.01 for gpio pins 25 & 26 for the spindle. Now to wire it that way since it isn't. These sainsmart BoB boards are cheap, well built and almost indestructable, but chasing a signal thru one that doesn't name outputs by pin # is a cast iron bitch. Thank you, Peter. [...] 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-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
