On 03/28/2021 04:50 PM, Bari wrote:
On 3/28/21 1:39 PM, Jon Elson wrote:
I was wondering if there was any possibility that
LinuxCNC could support the Beagle Bone and Charles
Steinkuehler's driver for the PRU. This does software
stepping with quite decent
performance by moving the "base thread" into the PRU
processors (200 MHz 32-bit RISC attached CPUs). This has
been shown to work nicely for small stepper-driven machines.
Not sure why the OrangePi LCNC project didn't just try to
get this going on the Allwinners since they have an
integrated micro for high speed stepping and a GPU to
support a HD res 30+ fps GUI.
https://orangecnc.gitlab.io/
Tom P did just post this work for Rpi and Opi's to do
double stepping using the GPIO from the main CPU cores.
Well, that's nothing like the PRU "driver" that Charles put
together. It looks about the same as an X86 with at least a
20 KHz base thread. The Pi definitely has better graphics
support than the Bone,
but it is mostly tolerable.
Jon
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