Add stepper driver DIR delay configuration option

...and recommended pulse width configuration for A4988

Marlin/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/default/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/AlephObjects/TAZ4/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Anet/A6/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Anet/A8/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Azteeg/X5GT/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/BIBO/TouchX/cyclops/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/BIBO/TouchX/default/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/BQ/Hephestos/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/BQ/Hephestos_2/Configuration_adv.h

@@ -840,9 +840,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/BQ/WITBOX/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Cartesio/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Creality/CR-10/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Creality/CR-10S/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Creality/CR-10mini/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Creality/CR-8/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Creality/Ender-2/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Creality/Ender-3/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Creality/Ender-4/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Felix/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/FolgerTech/i3-2020/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Geeetech/Prusa i3 Pro C/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Geeetech/Prusa i3 Pro W/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Infitary/i3-M508/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/JGAurora/A5/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/MakerParts/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Malyan/M150/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Malyan/M200/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Micromake/C1/enhanced/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Mks/Sbase/Configuration_adv.h

@@ -840,9 +840,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/RigidBot/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/SCARA/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Sanguinololu/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/TheBorg/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/TinyBoy2/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/UltiMachine/Archim2/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Velleman/K8200/Configuration_adv.h

@@ -835,9 +835,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Velleman/K8400/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/Wanhao/Duplicator 6/Configuration_adv.h

@@ -834,9 +834,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/delta/FLSUN/auto_calibrate/Configuration_adv.h

@@ -834,9 +834,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/delta/FLSUN/kossel/Configuration_adv.h

@@ -834,9 +834,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/delta/FLSUN/kossel_mini/Configuration_adv.h

@@ -834,9 +834,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/delta/generic/Configuration_adv.h

@@ -834,9 +834,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/delta/kossel_mini/Configuration_adv.h

@@ -834,9 +834,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/delta/kossel_pro/Configuration_adv.h

@@ -839,9 +839,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/delta/kossel_xl/Configuration_adv.h

@@ -834,9 +834,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/gCreate/gMax1.5+/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/makibox/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/tvrrug/Round2/Configuration_adv.h

@@ -832,9 +832,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/config/examples/wt150/Configuration_adv.h

@@ -833,9 +833,22 @@
 // Moves (or segments) with fewer steps than this will be joined with the next move
 #define MIN_STEPS_PER_SEGMENT 6
 
+/**
+ * Minimum delay after setting the stepper DIR (in ns)
+ *    0 : No delay (Expect at least 10µS since one Stepper ISR must transpire)
+ *   20 : Minimum for TMC2xxx drivers
+ *  200 : Minimum for A4988 drivers
+ *  500 : Minimum for LV8729 drivers (guess, no info in datasheet)
+ *  650 : Minimum for DRV8825 drivers
+ * 1500 : Minimum for TB6600 drivers (guess, no info in datasheet)
+ *15000 : Minimum for TB6560 drivers (guess, no info in datasheet)
+ */
+#define MINIMUM_STEPPER_DIR_DELAY 0
+
 /**
  * Minimum stepper driver pulse width (in µs)
  *   0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
+ *   1 : Minimum for A4988 stepper drivers
  *   1 : Minimum for LV8729 stepper drivers
  *   2 : Minimum for DRV8825 stepper drivers
  *   3 : Minimum for TB6600 stepper drivers

Marlin/src/module/stepper.cpp

@@ -332,6 +332,11 @@ void Stepper::set_directions() {
       }
     #endif
   #endif // !LIN_ADVANCE
+
+  // A small delay may be needed after changing direction
+  #if MINIMUM_STEPPER_DIR_DELAY > 0
+    DELAY_NS(MINIMUM_STEPPER_DIR_DELAY);
+  #endif
 }
 
 #if ENABLED(S_CURVE_ACCELERATION)