On Tue, 6 Sept 2022 at 22:34, Bari <bari00...@gmail.com> wrote: > So it looks like an RTAI bug with 2.8 at least about the encoders > signals to spindle RPM GUI in Axis. > > Will go back and trace why preempt_rt has issues with LPT encoders in > LCNC 2.9.
If there is a difference between the realtime versions then I would be looking in the rtapi code for different implementations of rtapi_inb https://linuxcnc.org/docs/stable/html/man/man3/rtapi_inb.3rtapi.html -- 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, 1912 _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers