Sebastian Kuzminsky wrote: >Eric H. Johnson wrote: > > >>The good news is, the patch seems to work. The bad news is that at other >>than very slow speeds (25-50 IPM) I keep getting following errors. I have >>played with the MAX_ACCELERATION and STEPGEN_MAXACCEL (which I suspect does >>not apply with Hostmot2), but that seems to have almost no effect. >> >> > >The hostmot2 stepgen driver does not yet support maxaccel or maxvel. >The stepgen code is very simplistic, I'm planning to fix it up and make >it feature-complete (for step/dir and up/down) in the next few days. > Note that the software step generator does step rate changes in the "make_pulses" function. If the hm2 driver only runs once per servo cycle, then mimicing that behavior requires the rate slewing to be in the FPGA. That functionality may not be critical but it would certainly provide smoother motion, since the motors won't snap from one rate to the next instantly.
It shouldn't be too hard to make it work, but I don't know what nasty details may show up to make it "interesting" ;) - Steve ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
