🐛 Prevent BABYSTEP freeze

See #22830, #13300
2 years ago · 99252cf0cd
1 changed files with 6 additions and 1 deletions
--- a/Marlin/src/module/stepper.cpp
+++ b/Marlin/src/module/stepper.cpp
@ -2979,7 +2979,12 @@ void Stepper::report_positions() {
  #else
    #define CYCLES_EATEN_BABYSTEP 0
  #endif
-  #define EXTRA_CYCLES_BABYSTEP (STEP_PULSE_CYCLES - (CYCLES_EATEN_BABYSTEP))
+
+  #if CYCLES_EATEN_BABYSTEP < STEP_PULSE_CYCLES
+    #define EXTRA_CYCLES_BABYSTEP (STEP_PULSE_CYCLES - (CYCLES_EATEN_BABYSTEP))
+  #else
+    #define EXTRA_CYCLES_BABYSTEP 0
+  #endif

  #if EXTRA_CYCLES_BABYSTEP > 20
    #define _SAVE_START() const hal_timer_t pulse_start = HAL_timer_get_count(MF_TIMER_PULSE)