@Sebastian Kuzminsky Thanks for those docs. @Charles Steinkuehler
How would you link an interrupt to linuxcnc? On Thu, Oct 13, 2016 at 9:15 PM, Charles Steinkuehler <char...@steinkuehler.net> wrote: > On 10/13/2016 8:01 PM, Chris Albertson wrote: >> >> For sophisticated motion control you really need both. (my internet is >> in robots, no as much CNC) One to run an OS and drive a user interface >> and screen and talk over a network and so on. and a smaller processor >> to make I/O lines go up and down and drive motors and read encoders. >> In LinuxCNC we sometimes have two processors a PC and a Mesa card. >> On an ARM based CNC, I think you'd see an "A" type perhaps it is a >> Raspberry Pi or perhaps it is an iPhone app. Then you'd have "M" >> types physically driving the hardware. > > This is what I like about the BeagleBone (the PRU substitutes for a > Cortex-M for hard-real-time bit-twiddling) and the Xilinx/Altera > SoC+FPGA combinations (where you can put the Mesa open-source VHDL > firmware in the FPGA). > > It works particularly well if you drive the servo-thread timing via > interrupts from the hardware (with position captured by the hardware > when it fires the interrupt), thus side-stepping the relatively poor > ARM Cortex-A interrupt latency and jitter. > > -- > Charles Steinkuehler > char...@steinkuehler.net > > > ------------------------------------------------------------------------------ > 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 > ------------------------------------------------------------------------------ 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
