style tweak

Author: thinkyhead

Marlin/Configuration_adv.h

@@ -4042,17 +4042,17 @@
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
-  #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_PLANNER_HEAD  2  // Show the planner queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_PLANNER_TAIL  4  // Show the planner queue tail position on this and the next LED matrix row
-
-  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
-                                         // If you experience stuttering, reboots, etc. this option can reveal how
-                                         // tweaks made to the configuration are affecting the printer in real-time.
-  #define MAX7219_DEBUG_PROFILE       6  // Display the fraction of CPU time spent in profiled code on this LED matrix
-                                         // row. By default idle() is profiled so this shows how "idle" the processor is.
-                                         // See class CodeProfiler.
-  //#define MAX7219_DEBUG_MULTISTEPPING 6// Show multistepping 1 to 128 on this LED matrix row.
+  #define MAX7219_DEBUG_PRINTER_ALIVE     // Blink corner LED of 8x8 matrix to show that the firmware is functioning
+  #define MAX7219_DEBUG_PLANNER_HEAD  2   // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  4   // Show the planner queue tail position on this and the next LED matrix row
+
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0   // Show the current planner queue depth on this and the next LED matrix row
+                                          // If you experience stuttering, reboots, etc. this option can reveal how
+                                          // tweaks made to the configuration are affecting the printer in real-time.
+  #define MAX7219_DEBUG_PROFILE       6   // Display the fraction of CPU time spent in profiled code on this LED matrix
+                                          // row. By default idle() is profiled so this shows how "idle" the processor is.
+                                          // See class CodeProfiler.
+  //#define MAX7219_DEBUG_MULTISTEPPING 6 // Show multistepping 1 to 128 on this LED matrix row.
 #endif
 
 /**

Marlin/src/feature/max7219.cpp

@@ -731,11 +731,11 @@ void Max7219::idle_tasks() {
 
   #ifdef MAX7219_DEBUG_MULTISTEPPING
     static uint8_t last_multistepping = 0;
-    uint8_t multistepping = Stepper::steps_per_isr;
-    if (last_multistepping != multistepping) {
+    const uint8_t multistepping = Stepper::steps_per_isr;
+    if (multistepping != last_multistepping) {
       static uint8_t log2_old = 0;
       uint8_t log2_new = 0;
-      for (uint8_t val = multistepping; val > 1; val >>= 1, log2_new++);
+      for (uint8_t val = multistepping; val > 1; val >>= 1) log2_new++;
       mark16(MAX7219_DEBUG_MULTISTEPPING, log2_old, log2_new, &row_change_mask);
       last_multistepping = multistepping;
       log2_old = log2_new;

Marlin/src/module/stepper.cpp

@@ -1890,7 +1890,7 @@ void Stepper::pulse_phase_isr() {
         PULSE_PREP(E);
 
         #if ENABLED(LIN_ADVANCE)
-          if (step_needed.e && la_active) {
+          if (la_active && step_needed.e) {
             // don't actually step here, but do subtract movements steps
             // from the linear advance step count
             step_needed.e = false;
@@ -2070,17 +2070,9 @@ void Stepper::pulse_phase_isr() {
 // Get the timer interval and the number of loops to perform per tick
 hal_timer_t Stepper::calc_timer_interval(uint32_t step_rate, uint8_t loops) {
   #if DISABLED(DISABLE_MULTI_STEPPING)
-    if (loops >= 16) {
-      step_rate >>= 4;
-      loops >>= 4;
-    }
-    if (loops >= 4) {
-      step_rate >>= 2;
-      loops >>= 2;
-    }
-    if (loops >= 2) {
-      step_rate >>= 1;
-    }
+    if (loops >= 16) { step_rate >>= 4; loops >>= 4; }
+    if (loops >=  4) { step_rate >>= 2; loops >>= 2; }
+    if (loops >=  2) { step_rate >>= 1; }
   #else
     NOMORE(step_rate, uint32_t(MAX_STEP_ISR_FREQUENCY_1X));
   #endif
@@ -2110,7 +2102,7 @@ hal_timer_t Stepper::calc_timer_interval(uint32_t step_rate, uint8_t loops) {
     }
     else {
       step_rate = 0;
-      uintptr_t table_address = (uintptr_t)&speed_lookuptable_slow[0][0];
+      const uintptr_t table_address = (uintptr_t)&speed_lookuptable_slow[0][0];
       return uint16_t(pgm_read_word(table_address));
     }
   }
@@ -2591,7 +2583,7 @@ hal_timer_t Stepper::block_phase_isr() {
           if (stepper_extruder != last_moved_extruder) la_advance_steps = 0;
         #endif
         if (la_active) {
-          // apply LA scaling and discount the effect of frequency scaling
+          // Apply LA scaling and discount the effect of frequency scaling
           la_dividend = (advance_dividend.e << current_block->la_scaling) << oversampling_factor;
         }
       #endif