On Sun, 10 Mar 2019 11:57:53 -0500 Jon Elson <el...@pico-systems.com> wrote:
> On 03/10/2019 05:18 AM, Nicklas Karlsson wrote: > >> Hey Chris, > >> > >> AFAIK, the Pi has better HDMI support compared to the Beagle but then it > >> was designed more for multimedia. The Beagle PRUs have the advantage that > >> they have access to some of the Beagle Processor RAM. That gives them a > >> bit of an advantage over the PI/32 bit hybrid using SPI. > >> > The PRUs are 200 MHz 32-bit RISC processors. There are 3 > shared RAM data sections between the PRUs and the ARM. The > PRUs have a limited number of direct IO pads that bypass all > the ARM high-level I/O fabric, and so can be read/written at > the 5 ns rate of the PRU, which is a big plus for various > special bit-fiddling I/O tasks. > > Charles Steinkuehler wrote a general driver for Machinekit > that uses the PRU for step generation, PWM and encoder input. But why use a PRU then this kind of hardware is usually part of the micro controller and very cheap? > Jon > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users -- Nicklas Karlsson <nicklas.karlsso...@gmail.com> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
