Kevin O'Connor c9cb462f90 itersolve: Implement a step+dir+step filter
Some stepper motor drivers do not respond well to rapid "step +
direction change + step" events.  In particular, it is believed this
can cause "over current" events on the tmc2208 drivers when they are
in "stealthchop" mode.  Detect these events and remove them from the
generated step times.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2020-03-04 19:43:47 -05:00
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