On Fri, 20 Sep 2019 at 07:03, John Dammeyer <jo...@autoartisans.com> wrote:
> > However the problem is that under MACH3 I can select which pin is the PWM > and which pin is the direction and I can't do that with the 7i92H. > It seems that the Smoothstepper has a utility that can map functions to individual pins, though pins are dedicated in direction (with some bidirectional) On the Mesa cards the IO pins can all be configured as input or output, but this is all set by the firmware rather than configured by a utility. (Or maybe the Smoothstepper utility creates a firmware on the fly?) To re-allocate pins on the Mesa card you need to create a different bit file. (so, once again, the LinuxCNC option is much more configurable, but much more difficult to configure...) It is possible to create custom bitfiles, I have done it, but it's not trivial and needs utilities from the FPGA manufacturer. (Xylinx) The pragmatic answer might be a couple of D-sub headers and some point-to-point wiring to make a pin-swapper. Which pin do you want the PWM to be on? You might find a firmware to suit by grep-ing (or using find-in-files in Geany or Notepad++) the .vhd files. I did once consider the idea of an Amazon VM that would build a custom bitfile on-demand (and got s far as setting up an instance that could build bitfiles, then stalled at the point where a web interface was needed) -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1916 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
