Fix stepper cycles calc

2017-01-08 18:46:58 -05:00
parent d4cbac2a5c
commit 8a28b4d098
1 changed files with 1 additions and 1 deletions
--- a/grbl/stepper.c
+++ b/grbl/stepper.c
@@ -949,7 +949,7 @@ void st_prep_buffer()
    float inv_rate = dt/(last_n_steps_remaining - step_dist_remaining); // Compute adjusted step rate inverse

    // Compute CPU cycles per step for the prepped segment.
-    uint32_t cycles = ceil( (TICKS_PER_MICROSECOND*1000000*60)*inv_rate ); // (cycles/step)
+    uint32_t cycles = ceil( float(SystemCoreClock)*60*inv_rate ); // (cycles/step)

    #ifdef ADAPTIVE_MULTI_AXIS_STEP_SMOOTHING
      // Compute step timing and multi-axis smoothing level.