On Thursday 24 October 2019 22:24:10 Peter C. Wallace wrote: > On Thu, 24 Oct 2019, Gene Heskett wrote: > > Date: Thu, 24 Oct 2019 21:44:36 -0400 > > From: Gene Heskett <ghesk...@shentel.net> > > Reply-To: "Enhanced Machine Controller (EMC)" > > <emc-users@lists.sourceforge.net> > > To: "Enhanced Machine Controller (EMC)" > > <emc-users@lists.sourceforge.net> Subject: [Emc-users] hal syntax > > maybe? > > > > Greetings all; > > > > I have added two pwmgen's to the config strings of my 6040's 5i25 > > config strings, and they show up in the dmesg as > > > > hm2/hm2_5i25.0: IO Pin 008 (P3-05): PWMGen #0, pin Out1 (Dir or > > Down) (Output) > > hm2/hm2_5i25.0: IO Pin 009 (P3-06): PWMGen #0, pin Out0 (PWM or > > Up) (Output) > > > > These two above with a straight thru cable would show up on the > > 7i76D as dir4 and step4, which would be pretty handy using step4 to > > drive an IRF520 based motor switch. > > > > > > hm2/hm2_5i25.0: IO Pin 025 (P2-05): PWMGen #1, pin Out1 (Dir or > > Down) (Output > > hm2/hm2_5i25.0: IO Pin 026 (P2-06): PWMGen #1, pin Out0 (PWM or > > Up) (Output) > > > > And they now show in a halconfig as: > > 12 bit IN FALSE hm2_5i25.0.pwmgen.00.enable > > 12 float IN 0 hm2_5i25.0.pwmgen.00.value > > 12 bit IN FALSE hm2_5i25.0.pwmgen.01.enable > > 12 float IN 0 hm2_5i25.0.pwmgen.01.value > > which surprises me as there is not any associated addf's. And any > > attempt to add them is an error Can I assume they are ready to rock > > and roll? > > The PWM is a hardware device, not a component so no addf is needed > > > Now I see its default type=1, when I would rather its zero and not > > wasting a pin. where do I set that?? > > Its a parameter (listed in the hostmot2 man page), but the PWM gen > will always use the dir pin unless the firmware is changed > > > So I arrive at setting the first pwmgen.00.enable=true, its > > frequency to 10 hz, and its input value to .5, scale is default at > > 1.0 > > > > But now I can't find an output to watch with the halscope to see if > > its running. > > You can by finding the GPIO pin associated with the PWM output > I think you told me that once before Peter. But the gpio pins don't match the cable pins, so it takes a whole bunch of cross references to find it. According to my understanding of the 7i76 man pages, the pwm signal from pwmgen.00 is on pin 6 of the db25 headed to the 7i76, and that should show up on the 7i76D's step-4 outputs in whatever polarity you need. If thats correct?, I'm off to the races.
Or I can use the 2nd pwmgen, which feeds the same pins on p2, and that should come out as pin 6 on the Bob. But I didn't want to drag my new gigahertz sampler scope 6+ feet up in the air to verify it. These IRF520 kits don't have mounting screw holes in the pcb, so I need to find a way to box them for insulation in that rats nest of the interface box. Thanks Peter, take care now. > > Am I supposed to be able to? > > > > Thanks. > > > > 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 > > Emc-users@lists.sourceforge.net > > 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 > Emc-users@lists.sourceforge.net > 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) 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
