Don't call __delay_4cycles for 0 cycle delay - takes a really long time. (#11586)

6 years ago · 00d24a8219
1 changed files with 4 additions and 4 deletions
--- a/Marlin/src/HAL/shared/Delay.h
+++ b/Marlin/src/HAL/shared/Delay.h
@ -75,8 +75,8 @@
      }
      #undef MAXNOPS
    }
-    else
-      __delay_4cycles(x / 4);
+    else if ((x >>= 2))
+      __delay_4cycles(x);
  }
  #undef nop

@ -114,8 +114,8 @@

      #undef MAXNOPS
    }
-    else
-      __delay_4cycles(x / 4);
+    else if ((x >>= 2))
+      __delay_4cycles(x);
  }
  #undef nop