Making progress. Scope shows PWM and DIR on correct pin. Buttons work. + button however increases speed reported value above 3000 RPM when examined with HAL meter even though PWM reached 100% at 3000 RPM. (50 RPS) Still missing something. #(JCD) Add PWM Spindle control # ################ # Spindle # ################ # This output is on DB25-14 setp hpg.pwmgen.00.pwm_period 100000 setp hpg.pwmgen.00.out.00.pin 813 setp hpg.pwmgen.00.out.00.enable 1 setp hpg.pwmgen.00.out.00.scale 50.0 setp hpg.pwmgen.00.out.00.value 0 net spindle-enable <= motion.spindle-on net spindle-vel-cmd-rps <= motion.spindle-speed-out-rps net spindle-vel-cmd-rpm <= motion.spindle-speed-out net spindle-vel-cmd-rpm-abs <= motion.spindle-speed-out-abs net spindle-cw <= motion.spindle-forward net spindle-ccw <= motion.spindle-reverse net spindle-brake <= motion.spindle-brake net spindle-revs => motion.spindle-revs net spindle-enable => hpg.pwmgen.00.out.00.enable net spindle-vel-cmd-rps => hpg.pwmgen.00.out.00.value # This output is on DB25-16 and is Spindle Direction. net spindle-ccw => bb_gpio.p8.out-19 # This output is on DB25-17 net charge-pump => bb_gpio.p9.out-14 > -----Original Message----- > From: machinekit@googlegroups.com [mailto:machinekit@googlegroups.com] On > Behalf Of John Dammeyer > Sent: April-13-21 7:46 PM > To: 'Charles Steinkuehler'; machinekit@googlegroups.com > Subject: RE: [Machinekit] BBB and charge pump > > That's what I'm trying to get going now. Actually first the PWM for spindle > speed and then I'll create the second PWM for charge > pump. > > Having a lot of trouble with the PWM for the spindle. I've added what I > think are the correct motion.spindle- ... but all I can get on > the AXIS screen are the +/- and STOP button along with the BRAKE checkbox. > And the +/- buttons do flip the DB25-16 port pin so > that's all working. > > But the set speed button is missing and I can't seem to link to the PWM > value. Which means I'm missing something. I'm using my > MESA 7i92H as a guide although it's complicated by the extra ramping stuff I > have in there. > > What makes the speed button show up on the screen? > Thanks > John > > > > -----Original Message----- > > From: <mailto:machinekit@googlegroups.com> machinekit@googlegroups.com [ > > <mailto:machinekit@googlegroups.com> mailto:machinekit@googlegroups.com] On > > Behalf Of Charles Steinkuehler > > Sent: April-13-21 6:50 PM > > To: <mailto:machinekit@googlegroups.com> machinekit@googlegroups.com > > Subject: Re: [Machinekit] BBB and charge pump > > > > If you just need a charge pump signal, use the PWM function on the PRU > > (alternately, you could use a stepgen instance, but that's more code > > overhead). > > > > On 4/13/2021 11:56 AM, John Dammeyer wrote: > > > Just an update. I have a 501.9 Hz square wave now coming out DB25-17. > > > The simple answer was that I needed to change to > > > > > > addf charge_pump.0 servo-thread > > > > > > The .0 was the issue. > > > > > > The next issue, and I'm not sure how to get around this is the servo > > > thread is too slow and doing something like this: > > > loadrt threads name1= fast-thread period1=100000 > > > > > > is not allowed. Probably because > > > loadrt [EMCMOT]EMCMOT servo_period_nsec=[EMCMOT]SERVO_PERIOD > > > num_joints=[TRAJ]AXES tp=tp kins=trivkins > > > > > > loads 'motmod' which does what 'threads' does. > > > > > > I can try the standard parallel port generated version like: > > > loadrt [EMCMOT]EMCMOT base_period_nsec=[EMCMOT]BASE_PERIOD > > > servo_period_nsec=[EMCMOT]SERVO_PERIOD > > num_joints=[TRAJ]AXES > > > > > > But I'll have to dig deeper to see why that may or may not work. Unless > > > someone has a better suggestion like doing it the way the > > MESA does with an extra step/dir interface. > > > > > > Next part is I also want 1kHz PWM. The MESA does this with hardware > > > again. Can the BBB can do it with the PRU? If not it will > have > > to also be done with a base thread of about 10KHz. > > > > > > John > > > > > > > > > > > >> -----Original Message----- > > >> From: <mailto:machinekit@googlegroups.com> machinekit@googlegroups.com > > >> [ <mailto:machinekit@googlegroups.com> > > >> mailto:machinekit@googlegroups.com] On Behalf Of John Dammeyer > > >> Sent: April-12-21 8:52 PM > > >> To: 'Machinekit' > > >> Subject: [Machinekit] BBB and charge pump > > >> > > >> I'm using the Xylotex DB25 cape for the BBB. I've been trying to add > > >> the charge pump component without much luck. > > >> In the HAL file I can do a > > >> loadrt charge_pump > > >> but an > > >> addf charge_pump > > >> fails with > > >> function 'charge_pump' not found. > > >> > > >> If I leave that out and run MachineKit on the Beagle I do see > > >> charge-pump.0.enable > > >> charge-pump.0.out > > >> charge-pump.0.out-2 > > >> charge-pump.0.out-4 > > >> charge-pump.0.func.time > > >> charge-pump.0.func.tmax > > >> charge-pump.0.func.tmax-inc > > >> > > >> But since the this HAL file only has a servo thread and no base thread > > >> is there a way to get this to work? > > >> > > >> Ultimately I want the ChargePump output on DB25-17 working in the same > > >> way I have the PC with MESA 7i92H > > >> # DB25-10 actvive low ESTOP signal mapped to 7i92 pin 13 > > >> # Pin# I/O Pri. func Sec. func Chan Pin func Pin > > >> Dir > > >> # 10 13 IOPort QCount 0 Quad-A > > >> (In) estop-external-in (input) > > >> > > >> # MESA 7i92H P2 connections mapped to estop-external-in > > >> net estop-external-in <= hm2_7i92.0.gpio.013.in_not > > >> > > >> # Stepper #4 is the charge pump on the MESA card and is enabled with the > > >> estop-external -in > > >> net estop-external-in => hm2_7i92.0.stepgen.04.enable > > >> > > >> which is output on DB25-17 from the MESA pin 7. > > >> # 17 7 IOPort StepGen 4 Step/Table1 > > >> (Out) Charge Pump frequency (output) > > >> > > >> > > >> -- > > >> website: <http://www.machinekit.io> http://www.machinekit.io blog: > > >> <http://blog.machinekit.io> http://blog.machinekit.io github: > > >> <https://github.com/machinekit> https://github.com/machinekit > > >> --- > > >> You received this message because you are subscribed to the Google > > >> Groups "Machinekit" group. > > >> To unsubscribe from this group and stop receiving emails from it, send > > >> an email to <mailto:machinekit+unsubscr...@googlegroups.com> > > >> machinekit+unsubscr...@googlegroups.com. > > >> To view this discussion on the web visit > > >> > > >> <https://groups.google.com/d/msgid/machinekit/0a0a01d73018%245f04d6e0%241d0e84a0%24%40autoartisans.com> > > >> > > >> https://groups.google.com/d/msgid/machinekit/0a0a01d73018%245f04d6e0%241d0e84a0%24%40autoartisans.com. > > > > > > > -- > > Charles Steinkuehler > > <mailto:char...@steinkuehler.net> char...@steinkuehler.net > > > > -- > > website: <http://www.machinekit.io> http://www.machinekit.io blog: > > <http://blog.machinekit.io> http://blog.machinekit.io github: > > <https://github.com/machinekit> https://github.com/machinekit > > --- > > You received this message because you are subscribed to the Google Groups > > "Machinekit" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to <mailto:machinekit+unsubscr...@googlegroups.com> > > machinekit+unsubscr...@googlegroups.com. > > To view this discussion on the web visit > > <https://groups.google.com/d/msgid/machinekit/ed9b13ab-776c-8edf-0e25-> > > https://groups.google.com/d/msgid/machinekit/ed9b13ab-776c-8edf-0e25- > > 6393ff289bd3%40steinkuehler.net. > > -- > website: <http://www.machinekit.io> http://www.machinekit.io blog: > <http://blog.machinekit.io> http://blog.machinekit.io github: > <https://github.com/machinekit> https://github.com/machinekit > --- > You received this message because you are subscribed to the Google Groups > "Machinekit" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to <mailto:machinekit+unsubscr...@googlegroups.com> > machinekit+unsubscr...@googlegroups.com. > To view this discussion on the web visit > > <https://groups.google.com/d/msgid/machinekit/0b3501d730d8%245b69d290%24123d77b0%24%40autoartisans.com> > > https://groups.google.com/d/msgid/machinekit/0b3501d730d8%245b69d290%24123d77b0%24%40autoartisans.com.
-- website: http://www.machinekit.io blog: http://blog.machinekit.io github: https://github.com/machinekit --- You received this message because you are subscribed to the Google Groups "Machinekit" group. To unsubscribe from this group and stop receiving emails from it, send an email to machinekit+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/machinekit/0b4601d730dd%24ee043dc0%24ca0cb940%24%40autoartisans.com.
