Miscellaneous cleanup

Marlin/src/feature/Max7219_Debug_LEDs.cpp

 
 static uint8_t LEDs[8] = { 0 };
 
+#ifdef CPU_32_BIT
+  #define MS_DELAY() delayMicroseconds(5)  // 32-bit processors need a delay to stabilize the signal
+#else
+  #define MS_DELAY() NOOP
+#endif
+
 void Max7219_PutByte(uint8_t data) {
   CRITICAL_SECTION_START
   for (uint8_t i = 8; i--;) {
-    #ifdef CPU_32_BIT                    // The 32-bit processors are so fast, a small delay in the code is needed
-      delayMicroseconds(5);              // to let the signal wires stabilize.
-      WRITE(MAX7219_CLK_PIN, LOW);       // tick
-      delayMicroseconds(5);
-      WRITE(MAX7219_DIN_PIN, (data & 0x80) ? HIGH : LOW);  // send 1 or 0 based on data bit
-      delayMicroseconds(5);
-      WRITE(MAX7219_CLK_PIN, HIGH);      // tock
-      delayMicroseconds(5);
-    #else
-      WRITE(MAX7219_CLK_PIN, LOW);       // tick
-      WRITE(MAX7219_DIN_PIN, (data & 0x80) ? HIGH : LOW);  // send 1 or 0 based on data bit
-      WRITE(MAX7219_CLK_PIN, HIGH);      // tock
-    #endif
-
+    MS_DELAY();
+    WRITE(MAX7219_CLK_PIN, LOW);       // tick
+    MS_DELAY();
+    WRITE(MAX7219_DIN_PIN, (data & 0x80) ? HIGH : LOW);  // send 1 or 0 based on data bit
+    MS_DELAY();
+    WRITE(MAX7219_CLK_PIN, HIGH);      // tock
+    MS_DELAY();
     data <<= 1;
   }
   CRITICAL_SECTION_END
 }
 
 void Max7219(const uint8_t reg, const uint8_t data) {
-  #ifdef CPU_32_BIT
-    delayMicroseconds(5);
-  #endif
+  MS_DELAY();
   CRITICAL_SECTION_START
   WRITE(MAX7219_LOAD_PIN, LOW);  // begin
-  #ifdef CPU_32_BIT              // The 32-bit processors are so fast, a small delay in the code is needed
-    delayMicroseconds(5);        // to let the signal wires stabilize.
-  #endif
+  MS_DELAY();
   Max7219_PutByte(reg);          // specify register
-  #ifdef CPU_32_BIT
-    delayMicroseconds(5);
-  #endif
+  MS_DELAY();
   Max7219_PutByte(data);         // put data
-  #ifdef CPU_32_BIT
-    delayMicroseconds(5);
-  #endif
+  MS_DELAY();
   WRITE(MAX7219_LOAD_PIN, LOW);  // and tell the chip to load the data
-  #ifdef CPU_32_BIT
-    delayMicroseconds(5);
-  #endif
+  MS_DELAY();
   WRITE(MAX7219_LOAD_PIN, HIGH);
   CRITICAL_SECTION_END
-  #ifdef CPU_32_BIT
-    delayMicroseconds(5);
-  #endif
+  MS_DELAY();
 }
 
 void Max7219_LED_Set(const uint8_t row, const uint8_t col, const bool on) {

Marlin/src/gcode/geometry/M206_M428.cpp

       set_home_offset((AxisEnum)i, parser.value_linear_units());
 
   #if ENABLED(MORGAN_SCARA)
-    if (parser.seen('T')) set_home_offset(A_AXIS, parser.value_linear_units()); // Theta
-    if (parser.seen('P')) set_home_offset(B_AXIS, parser.value_linear_units()); // Psi
+    if (parser.seen('T')) set_home_offset(A_AXIS, parser.value_float()); // Theta
+    if (parser.seen('P')) set_home_offset(B_AXIS, parser.value_float()); // Psi
   #endif
 
   report_current_position();

Marlin/src/gcode/motion/M290.cpp

   #if ENABLED(BABYSTEP_XY)
     for (uint8_t a = X_AXIS; a <= Z_AXIS; a++)
       if (parser.seenval(axis_codes[a]) || (a == Z_AXIS && parser.seenval('S'))) {
-        const float offs = constrain(parser.value_axis_units(a), -2, 2);
+        const float offs = constrain(parser.value_axis_units((AxisEnum)a), -2, 2);
         #if ENABLED(BABYSTEP_ZPROBE_OFFSET)
           if (a == Z_AXIS) {
             zprobe_zoffset += offs;
             refresh_zprobe_zoffset(true); // 'true' to not babystep
           }
         #endif
-        thermalManager.babystep_axis(a, offs * planner.axis_steps_per_mm[a]);
+        thermalManager.babystep_axis((AxisEnum)a, offs * planner.axis_steps_per_mm[a]);
       }
   #else
     if (parser.seenval('Z') || parser.seenval('S')) {

Marlin/src/module/planner.cpp

 }
 
 inline float calculate_volumetric_multiplier(const float &diameter) {
-  if (!parser.volumetric_enabled || diameter == 0) return 1.0;
-  return 1.0 / CIRCLE_AREA(diameter * 0.5);
+  return (parser.volumetric_enabled && diameter) ? 1.0 / CIRCLE_AREA(diameter * 0.5) : 1.0;
 }
 
 void Planner::calculate_volumetric_multipliers() {