Greetings everybody, including Peter; Just now powering up my lathe with a new spindle driver, one of Jon's 20 amp pwm servo models.
In my hal file, I have this: (line wrap off) # give me pin 17 to control Jon's driver setp hm2-5i25.0.gpio.007.is_output true setp hm2_5i25.0.gpio.007.invert_output true # now send the driver init anytime motion.spindle-on goes true net spindle-on motion.spindle-on boot.0.enable hm2_5i25.0.pwmgen.00.enable net spindle-on hm2_5i25.0.gpio.007.out # is early enable signal for Jon's driver on J3 pin 17 Now, this boot module is, and I have it in the halscope, sending the two enabling pulses shortly after boot.0.enable hits. Looks all well and good till the driver doesn't work because it never sees the to pulses boot sends it because hm2_5i25.0.pwmgen.00.enable never changes state indicating the pwmgen should be enabled. Even when I zoom way out timewise, I never see a state change at that pin. BUT! the pwmgen becomes active and does generate active + pulses at the BOB output... But its not active in time to send the direction signals that enable the driver. Direction logic does work if I tap the CCW button. I can only think of one thing to try, and that is to put the servo-thread back down to 1 kilohertz. Or possibly modify boot.comp to kill more time. Its current running just shy of 4khz. Is this a known problem? PS: because the server is slow, I'll just append to the previous msg. Item 1, slowing the servo-thread to 1 khz made no detectable difference, but I am getting schmardter, I think. The hal_meter CAN read the pwmgen.enable state AND the pwmgen.value, but the hal_scope cannot. So in the most recent 2.6.2, hal_scope seems to be in need of some TLC. So now I am going to have to concoct some sort of a way to see if I can capture this startup dir twiddling on a non-storage scope. Doing it 10x a second, I may be able to get the trace bright enough to be able to see the direction twiddling bits at the BOB output. Fun & games. 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) Genes Web page <http://geneslinuxbox.net:6309/gene> US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS ------------------------------------------------------------------------------ Slashdot TV. Video for Nerds. Stuff that matters. http://tv.slashdot.org/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
