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config: Document motor_power pin in skr2 config (#4677) 

This is just a short inline comment about Bigtreetech's implementation of the "anti-reversal stepper protection" and the way it should be handled in the Klipper printer configuration.

Signed-off-by: Jerry Chapman <truckershitch@hambone.e4ward.com>
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truckershitch 2021-09-15 18:58:30 -04:00 committed by GitHub
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config/generic-bigtreetech-skr-2.cfg
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@ -88,6 +88,10 @@ pin: PB7
#[heater_fan fan2] #[heater_fan fan2]
#pin: PB5 #pin: PB5
# Due to BTT implementing a Marlin-specific safety feature,
# "anti-reversal stepper protection", this pin needs pulling
# high to pass power to stepper drivers and most FETs
[output_pin motor_power] [output_pin motor_power]
pin: PC13 pin: PC13
value: 1 value: 1