How did you get the G540 to work with the bbb? Been looking all over the place on how to get a parallel port out of it.
On Wednesday, February 1, 2017 at 12:10:49 AM UTC-6, Tom M wrote: > > > We almost almost finished configuring our cnc build at the makerspace I > belong to. > > Since the G540 has a charge pump, we thought we would take advantage of it. > (We we're debating if we even need to since we don't think the bbb has the > start issues that a pc parallel port does. > > My understanding is that the G540 needs a charge pump frequency of 10Khz > > It seems that config files that we started with was only setup with a > 500hz servo-thread > > I suspect the servo thread is setup within the calls made at this line.. > > https://github.com/Workshop88/machinekit/blob/OptimizePru/configs/ARM/BeagleBone/RosettaBoneGecko/RosettaBoneGecko.hal#L43 > ) > Is this correct? > > We tried setting up a 10Khz thread here: > https://github.com/Workshop88/machinekit/blob/OptimizePru/configs/ARM/BeagleBone/RosettaBoneGecko/RosettaBoneGecko.hal#L31 > When we put a scope on the charge pump signal it was very erratic and the > gecko faulted. (I was fine when it was on the servo thread but too slow) > (When we had the charge pump hooked to the 500Hz servo thread we got a > very nice signal. > > Are there any technical issues regarding the BBB that I'm not taking > account? > Thanks, > Tom > > > http://wiki.linuxcnc.org/cgi-bin/wiki.pl?About_Charge_Pumps > -- 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. Visit this group at https://groups.google.com/group/machinekit. For more options, visit https://groups.google.com/d/optout.
