What kind of max step rates (and other IO features/limitations) can be expected with the current BBB/PRU/Linuxcnc that is currently available? Sorry if this has been talked about already, I haven't been following this closely for a while, so feel free to redirect me if it is documented somewhere. I didn't see it mentioned on the install page (http://wiki.linuxcnc.org/cgi-bin/wiki.pl?BeagleboneDevsetup)... Thanks, Tom
On Oct 14, 2013, at 8:18 AM, Charles Steinkuehler <[email protected]> wrote: > On 10/14/2013 6:51 AM, andy pugh wrote: >> On 14 October 2013 05:16, Jared Turner <[email protected]> wrote: >>> I’m trying to resurrect a small CNC mill using a BBB. I have machine kit >>> installed but I would like to run the stepconf wizard to simplify setup of >>> the stepper motors. Is this possible? or do I have to edit the ini and hal >>> files manually? Thanks in advance for the help! >> >> The answer is probably "both". You can use Stepconf to create a setup >> that matches your hardware, except you will have to pretend to have a >> parallel port. You will then need to go through the HAL file by hand >> modifying all parallel port lines to point to the correct BBB pins. >> >> You also probably want to swap the software stepgens for PRU stepgens. > > I haven't tried running stepconf, so I'm not sure that it even runs > (although I don't know why it shouldn't). In reality, the PRU > configurations are really much more similar to a Mesa config than to a > software step setup. As far as LinuxCNC on the ARM is concerned, > something _else_ is doing the step generation (the PRU in this instance) > and I've tried to make the pins and parameters on the PRU step generator > component match up well with the hm2 driver. > > So if you have a good hostmot2 setup, it's fairly straight-forward to > convert it to the BBB with the PRU driver. > > -- > Charles Steinkuehler > [email protected] > > ------------------------------------------------------------------------------ > October Webinars: Code for Performance > Free Intel webinars can help you accelerate application performance. > Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from > the latest Intel processors and coprocessors. See abstracts and register > > http://pubads.g.doubleclick.net/gampad/clk?id=60134071&iu=/4140/ostg.clktrk_______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60135031&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
