STEPPERS_DISABLE_PINoption. This should be used like
#define STEPPERS_DISABLE_PIN GPIO_NUM_2.
#define DEFAULT_INVERT_ST_ENABLE 1. My board needed the enable signal to not be inverted (that's what A4988/Trinamic TMC2208 drivers need), so I set it to 0.
$Stepper/IdleTime=255. That's the maximum timeout and will always keep them enabled.
Last updated on February 15, 2021. For any questions/feedback, email me at firstname.lastname@example.org.