> > There ARM M is tiny and dirt cheap and is very good for real-time > > work. I have a robot with four motors and encoders and get 44,000 > > interrupts per second > > and much better real time latencies then from any Linux based solution > > on any platform. > > > > My solution for robot control is a hierarchy with ARM M for the lowest > > level, then > > Raspberry Pi 3 connected by high speed serial.
Right now I am at this point with high speed serial communication to ARM for the lowest level. > I did succeed in building a fully rt-preempt 4.9 kernel on it today, took > about 4 hours, but I've not yet attempted to boot it as I saw some stuff > go by during the build (when I wasn't checking my eyelids for leaks :) > that I yet need to turn off. I think, other than fine tuning the kernel > build, that convincing the hm2_rpspi driver that it should run on the > rock's rk3328, arm64 quad core SoC, running at up to 1.5GHz should be > the last major hurdle to making linuxcnc run on it, ... Happen to know how many SPI ports there may be? Regards Nicklas Karlsson ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
