On Friday, 20 May 2022 14:52:42 EDT Peter C. Wallace wrote: > On Fri, 20 May 2022, gene heskett wrote: > > Date: Fri, 20 May 2022 14:41:53 -0400 > > From: gene heskett <[email protected]> > > Reply-To: "Enhanced Machine Controller (EMC)" > > > > <[email protected]> > > > > To: "Enhanced Machine Controller (EMC)" > > <[email protected]> Subject: Re: [Emc-users] For Peter > > > > On Friday, 20 May 2022 13:52:30 EDT Peter C. Wallace wrote: > >> On Fri, 20 May 2022, gene heskett wrote: > >>> Date: Fri, 20 May 2022 13:10:25 -0400 > >>> From: gene heskett <[email protected]> > >>> Reply-To: "Enhanced Machine Controller (EMC)" > >>> > >>> <[email protected]> > >>> > >>> To: "Enhanced Machine Controller (EMC)" > >>> <[email protected]> Subject: [Emc-users] For Peter > >>> > >>> Greetings Peter; > >>> > >>> Is there any way I can use pwmgen.00 in a 5i25-7i76 lashup while > >>> using > >>> stepgen_3 for a B axis? > >> > >> If you only use 4 axis total, yes, there is firmware that uses > >> the 7I76's stepgen4 outpus for PWM/DIR > >> > >>> Or do I have to use a pwmgen module, software IOW, and feed it to a > >>> gpio. This will make me use a much lower frequency. I had plans to > >>> use 4 kilohertz because I can't hear that due to Carhart notches > >>> 120+db deep in both ears. > >>> > >>> I only need 1 pin, the pwm output. No use of a dir for air > >>> compressing. > >>> > >>> Thank you Peter. > >> > >> Yes you would want a 5i25_7i76x1pd firmware. I see the source but > >> the > >> bitfile is not on the distribution. This firmware replaces stepgen 4 > >> outputs with PWM 0 outputs: > >> > >> http://freeby.mesanet.com/5i25_7i76x2_1pd.zip > >> > >> > >> Note that you may need to choose the -step output and invert the PWM > >> to get a PWM output that is low at startup or watchdog bite and has > >> the desired polarity > > > > Okaayy. > > > > Further playing, I've also enabled pwmgen.01, moving the enable and > > value settings to it, but I still can't find its outputs, which s/b > > on the BOB beside the 7i76. Where does its output go?. That zip > > has been installed on both of these 5i25-7i76 combo's. > > The output is on 7i76's Stepgen 4 > > 5I25 P3 (DB25) 7I76 stepgen 4 step/dir = PWM 0 PWM/dir > 5i25 P2 (HDR26) 7I76 Stepgen 4 step/dir = PWM 1 PWM/dir > Humm, can't see a signal > > You can verify this with: > > > sudo mesaflash --device 5i25 --dbname1 7i76 --dbname2 7i76
unknown option --dbname1 It also locked up the quit and I had to reboot that box. My mesaflash must be too old, link to new one? > > And on the GO704, which is what I am looking at to see how I did it, > > I am actually useing both pwmgens as I'm now useing 01 to drive the > > spindle and 00 to drive the A/B servo, so thats using stepgen-3's > > pins on the 7i76. But on this 6040 machine I'm useing stepgen-3 to > > run the 3 phase axis B. So it seems as if I ought to be able to use > > 01, which doesn't comeout of the 7i76, but should be findable on the > > BoB. But I can't find it with the halscope. > > > > So I'm obviously doing something wrong yet. But what? > > > > Thany you Peter. Take care & stay well. > > > > 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, 1940) > > If we desire respect for the law, we must first make the law > > respectable. - Louis D. Brandeis > > > > > > > > > > > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > Peter Wallace > Mesa Electronics > > (\__/) > (='.'=) This is Bunny. Copy and paste bunny into your > (")_(") signature to help him gain world domination. > > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > . 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, 1940) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
