The Rockchip and the Allwinner SOC's have integrated microcontrollers
as well for software stepping at high speeds.
https://forum.linuxcnc.org/18-computer/39037-linuxcnc-orange-pi?start=30
On 6/19/20 2:55 PM, John Dammeyer wrote:
A Pi isn't the most suitable unit for that sort of thing. The BeagleBone has
two hardware QEI devices. Alternatively there are other processors out there
that have the hardware interface.
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