Use serial shorthand

Marlin/src/MarlinCore.cpp

@@ -419,8 +419,7 @@ inline void manage_inactivity(const bool ignore_stepper_queue=false) {
   if (parked_or_ignoring) gcode.reset_stepper_timeout(ms);
 
   if (gcode.stepper_max_timed_out(ms)) {
-    SERIAL_ERROR_START();
-    SERIAL_ECHOLNPAIR(STR_KILL_INACTIVE_TIME, parser.command_ptr);
+    SERIAL_ERROR_MSG(STR_KILL_INACTIVE_TIME, parser.command_ptr);
     kill();
   }
 

Marlin/src/feature/binary_stream.h

@@ -352,8 +352,7 @@ public:
               }
             }
             else {
-              SERIAL_ECHO_START();
-              SERIAL_ECHOLNPAIR("Packet header(", packet.header.sync, "?) corrupt");
+              SERIAL_ECHO_MSG("Packet header(", packet.header.sync, "?) corrupt");
               stream_state = StreamState::PACKET_RESEND;
             }
           }
@@ -387,8 +386,7 @@ public:
               stream_state = StreamState::PACKET_PROCESS;
             }
             else {
-              SERIAL_ECHO_START();
-              SERIAL_ECHOLNPAIR("Packet(", packet.header.sync, ") payload corrupt");
+              SERIAL_ECHO_MSG("Packet(", packet.header.sync, ") payload corrupt");
               stream_state = StreamState::PACKET_RESEND;
             }
           }
@@ -406,8 +404,7 @@ public:
           if (packet_retries < MAX_RETRIES || MAX_RETRIES == 0) {
             packet_retries++;
             stream_state = StreamState::PACKET_RESET;
-            SERIAL_ECHO_START();
-            SERIAL_ECHOLNPAIR("Resend request ", int(packet_retries));
+            SERIAL_ECHO_MSG("Resend request ", int(packet_retries));
             SERIAL_ECHOLNPAIR("rs", sync);
           }
           else

Marlin/src/feature/cancel_object.cpp

@@ -67,8 +67,7 @@ void CancelObject::uncancel_object(const int8_t obj) {
 
 void CancelObject::report() {
   if (active_object >= 0) {
-    SERIAL_ECHO_START();
-    SERIAL_ECHOLNPAIR("Active Object: ", int(active_object));
+    SERIAL_ECHO_MSG("Active Object: ", int(active_object));
   }
 
   if (canceled) {

Marlin/src/feature/mmu/mmu2.cpp

@@ -514,8 +514,7 @@ static void mmu2_not_responding() {
         extruder = index; // filament change is finished
         active_extruder = 0;
         ENABLE_AXIS_E0();
-        SERIAL_ECHO_START();
-        SERIAL_ECHOLNPAIR(STR_ACTIVE_EXTRUDER, int(extruder));
+        SERIAL_ECHO_MSG(STR_ACTIVE_EXTRUDER, int(extruder));
       }
       ui.reset_status();
     }
@@ -602,8 +601,7 @@ static void mmu2_not_responding() {
       active_extruder = 0;
 
       ENABLE_AXIS_E0();
-      SERIAL_ECHO_START();
-      SERIAL_ECHOLNPAIR(STR_ACTIVE_EXTRUDER, int(extruder));
+      SERIAL_ECHO_MSG(STR_ACTIVE_EXTRUDER, int(extruder));
 
       ui.reset_status();
     }
@@ -698,8 +696,7 @@ static void mmu2_not_responding() {
       extruder = index; //filament change is finished
       active_extruder = 0;
       ENABLE_AXIS_E0();
-      SERIAL_ECHO_START();
-      SERIAL_ECHOLNPAIR(STR_ACTIVE_EXTRUDER, int(extruder));
+      SERIAL_ECHO_MSG(STR_ACTIVE_EXTRUDER, int(extruder));
       ui.reset_status();
     }
 

Marlin/src/gcode/bedlevel/mbl/G29.cpp

@@ -142,8 +142,7 @@ void GcodeSuite::G29() {
       if (parser.seenval('I')) {
         ix = parser.value_int();
         if (!WITHIN(ix, 0, GRID_MAX_POINTS_X - 1)) {
-          SERIAL_ECHOPAIR("I out of range (0-", int(GRID_MAX_POINTS_X - 1));
-          SERIAL_ECHOLNPGM(")");
+          SERIAL_ECHOLNPAIR("I out of range (0-", int(GRID_MAX_POINTS_X - 1), ")");
           return;
         }
       }
@@ -153,8 +152,7 @@ void GcodeSuite::G29() {
       if (parser.seenval('J')) {
         iy = parser.value_int();
         if (!WITHIN(iy, 0, GRID_MAX_POINTS_Y - 1)) {
-          SERIAL_ECHOPAIR("J out of range (0-", int(GRID_MAX_POINTS_Y - 1));
-          SERIAL_ECHOLNPGM(")");
+          SERIAL_ECHOLNPAIR("J out of range (0-", int(GRID_MAX_POINTS_Y - 1), ")");
           return;
         }
       }
@@ -182,10 +180,8 @@ void GcodeSuite::G29() {
 
   } // switch(state)
 
-  if (state == MeshNext) {
-    SERIAL_ECHOPAIR("MBL G29 point ", _MIN(mbl_probe_index, GRID_MAX_POINTS));
-    SERIAL_ECHOLNPAIR(" of ", int(GRID_MAX_POINTS));
-  }
+  if (state == MeshNext)
+    SERIAL_ECHOLNPAIR("MBL G29 point ", _MIN(mbl_probe_index, GRID_MAX_POINTS), " of ", int(GRID_MAX_POINTS));
 
   report_current_position();
 }

Marlin/src/gcode/config/M281.cpp

@@ -34,7 +34,9 @@
  *  U<angle> - Stowed Angle
  */
 void GcodeSuite::M281() {
+
   if (!parser.seenval('P')) return;
+
   const int servo_index = parser.value_int();
   if (WITHIN(servo_index, 0, NUM_SERVOS - 1)) {
     #if ENABLED(BLTOUCH)
@@ -53,16 +55,14 @@ void GcodeSuite::M281() {
       angle_change = true;
     }
     if (!angle_change) {
-      SERIAL_ECHO_START();
-      SERIAL_ECHOLNPAIR(" Servo ", servo_index,
-                        " L", servo_angles[servo_index][0],
-                        " U", servo_angles[servo_index][1]);
+      SERIAL_ECHO_MSG(" Servo ", servo_index,
+                      " L", servo_angles[servo_index][0],
+                      " U", servo_angles[servo_index][1]);
     }
   }
-  else {
-    SERIAL_ERROR_START();
-    SERIAL_ECHOLNPAIR("Servo ", servo_index, " out of range");
-  }
+  else
+    SERIAL_ERROR_MSG("Servo ", servo_index, " out of range");
+
 }
 
 #endif // EDITABLE_SERVO_ANGLES

Marlin/src/gcode/config/M304.cpp

@@ -35,14 +35,15 @@
  *  D<dval> - Set the D value
  */
 void GcodeSuite::M304() {
+
   if (parser.seen('P')) thermalManager.temp_bed.pid.Kp = parser.value_float();
   if (parser.seen('I')) thermalManager.temp_bed.pid.Ki = scalePID_i(parser.value_float());
   if (parser.seen('D')) thermalManager.temp_bed.pid.Kd = scalePID_d(parser.value_float());
 
-  SERIAL_ECHO_START();
-  SERIAL_ECHOLNPAIR(" p:", thermalManager.temp_bed.pid.Kp,
-                    " i:", unscalePID_i(thermalManager.temp_bed.pid.Ki),
-                    " d:", unscalePID_d(thermalManager.temp_bed.pid.Kd));
+  SERIAL_ECHO_MSG(" p:", thermalManager.temp_bed.pid.Kp,
+                  " i:", unscalePID_i(thermalManager.temp_bed.pid.Ki),
+                  " d:", unscalePID_d(thermalManager.temp_bed.pid.Kd));
+
 }
 
 #endif // PIDTEMPBED

Marlin/src/gcode/config/M305.cpp

@@ -49,10 +49,8 @@ void GcodeSuite::M305() {
   const bool do_set = parser.seen("BCRT");
 
   // A valid P index is required
-  if (t_index >= (USER_THERMISTORS) || (do_set && t_index < 0)) {
-    SERIAL_ECHO_START();
-    SERIAL_ECHOLNPAIR("!Invalid index. (0 <= P <= ", int(USER_THERMISTORS - 1), ")");
-  }
+  if (t_index >= (USER_THERMISTORS) || (do_set && t_index < 0))
+    SERIAL_ECHO_MSG("!Invalid index. (0 <= P <= ", int(USER_THERMISTORS - 1), ")");
   else if (do_set) {
     if (parser.seen('R')) // Pullup resistor value
       if (!thermalManager.set_pull_up_res(t_index, parser.value_float()))

Marlin/src/gcode/control/M280.cpp

@@ -31,7 +31,9 @@
  * M280: Get or set servo position. P<index> [S<angle>]
  */
 void GcodeSuite::M280() {
+
   if (!parser.seen('P')) return;
+
   const int servo_index = parser.value_int();
   if (WITHIN(servo_index, 0, NUM_SERVOS - 1)) {
     if (parser.seen('S')) {
@@ -41,15 +43,12 @@ void GcodeSuite::M280() {
       else
         MOVE_SERVO(servo_index, a);
     }
-    else {
-      SERIAL_ECHO_START();
-      SERIAL_ECHOLNPAIR(" Servo ", servo_index, ": ", servo[servo_index].read());
-    }
-  }
-  else {
-    SERIAL_ERROR_START();
-    SERIAL_ECHOLNPAIR("Servo ", servo_index, " out of range");
+    else
+      SERIAL_ECHO_MSG(" Servo ", servo_index, ": ", servo[servo_index].read());
   }
+  else
+    SERIAL_ERROR_MSG("Servo ", servo_index, " out of range");
+
 }
 
 #endif // HAS_SERVOS

Marlin/src/gcode/host/M113.cpp

@@ -32,14 +32,14 @@
  *   S<seconds> Optional. Set the keepalive interval.
  */
 void GcodeSuite::M113() {
+
   if (parser.seenval('S')) {
     host_keepalive_interval = parser.value_byte();
     NOMORE(host_keepalive_interval, 60);
   }
-  else {
-    SERIAL_ECHO_START();
-    SERIAL_ECHOLNPAIR("M113 S", (unsigned long)host_keepalive_interval);
-  }
+  else
+    SERIAL_ECHO_MSG("M113 S", (uint16_t)host_keepalive_interval);
+
 }
 
 #endif // HOST_KEEPALIVE_FEATURE

Marlin/src/gcode/motion/M290.cpp

@@ -42,14 +42,12 @@
   FORCE_INLINE void mod_probe_offset(const float &offs) {
     if (TERN1(BABYSTEP_HOTEND_Z_OFFSET, active_extruder == 0)) {
       probe.offset.z += offs;
-      SERIAL_ECHO_START();
-      SERIAL_ECHOLNPAIR(STR_PROBE_OFFSET " " STR_Z, probe.offset.z);
+      SERIAL_ECHO_MSG(STR_PROBE_OFFSET " " STR_Z, probe.offset.z);
     }
     else {
       #if ENABLED(BABYSTEP_HOTEND_Z_OFFSET)
         hotend_offset[active_extruder].z -= offs;
-        SERIAL_ECHO_START();
-        SERIAL_ECHOLNPAIR(STR_PROBE_OFFSET STR_Z ": ", hotend_offset[active_extruder].z);
+        SERIAL_ECHO_MSG(STR_PROBE_OFFSET STR_Z ": ", hotend_offset[active_extruder].z);
       #endif
     }
   }

Marlin/src/gcode/stats/M31.cpp

@@ -35,6 +35,5 @@ void GcodeSuite::M31() {
 
   ui.set_status(buffer);
 
-  SERIAL_ECHO_START();
-  SERIAL_ECHOLNPAIR("Print time: ", buffer);
+  SERIAL_ECHO_MSG("Print time: ", buffer);
 }

Marlin/src/lcd/extui/lib/anycubic_i3mega/anycubic_i3mega_lcd.cpp

@@ -552,10 +552,8 @@ void AnycubicTFTClass::GetCommandFromTFT() {
         a_command = ((int)((strtod(&TFTcmdbuffer[TFTbufindw][TFTstrchr_pointer - TFTcmdbuffer[TFTbufindw] + 1], nullptr))));
 
         #if ENABLED(ANYCUBIC_LCD_DEBUG)
-          if ((a_command > 7) && (a_command != 20)) { // No debugging of status polls, please!
-            SERIAL_ECHOPGM("TFT Serial Command: ");
-            SERIAL_ECHOLN(TFTcmdbuffer[TFTbufindw]);
-          }
+          if ((a_command > 7) && (a_command != 20))   // No debugging of status polls, please!
+            SERIAL_ECHOLNPAIR("TFT Serial Command: ", TFTcmdbuffer[TFTbufindw]);
         #endif
 
         switch (a_command) {

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/ftdi_eve_lib/basic/commands.cpp

@@ -1074,7 +1074,7 @@ void CLCD::init() {
    uint8_t device_id = mem_read_8(REG::ID);            // Read Device ID, Should Be 0x7C;
    if (device_id == 0x7C) {
      #if ENABLED(TOUCH_UI_DEBUG)
-       SERIAL_ECHO_MSG("FTDI chip initialized ");
+       SERIAL_ECHO_MSG("FTDI chip initialized");
      #endif
      break;
    }
@@ -1082,11 +1082,10 @@ void CLCD::init() {
      delay(1);
 
    if (counter == 249) {
-     #if ENABLED(TOUCH_UI_DEBUG)
-       SERIAL_ECHO_START();
-       SERIAL_ECHOLNPAIR("Timeout waiting for device ID, should be 124, got ", device_id);
-     #endif
-   }
+      #if ENABLED(TOUCH_UI_DEBUG)
+        SERIAL_ECHO_MSG("Timeout waiting for device ID, should be 124, got ", int(device_id));
+      #endif
+    }
   }
 
   /* make sure that all units are in working conditions, usually the touch-controller needs a little more time */
@@ -1101,10 +1100,8 @@ void CLCD::init() {
     else
       delay(1);
 
-    if (ENABLED(TOUCH_UI_DEBUG) && counter == 99) {
-      SERIAL_ECHO_START();
-      SERIAL_ECHOLNPAIR("Timeout waiting for reset status. Should be 0x00, got ", reset_status);
-    }
+    if (ENABLED(TOUCH_UI_DEBUG) && counter == 99)
+      SERIAL_ECHO_MSG("Timeout waiting for reset status. Should be 0x00, got ", int(reset_status));
   }
 
   mem_write_8(REG::PWM_DUTY, 0);   // turn off Backlight, Frequency already is set to 250Hz default

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/ftdi_eve_lib/extended/event_loop.cpp

@@ -124,8 +124,7 @@ namespace FTDI {
       case UNPRESSED:
         if (tag != 0) {
           #if ENABLED(TOUCH_UI_DEBUG)
-            SERIAL_ECHO_START();
-            SERIAL_ECHOLNPAIR("Touch start: ", tag);
+            SERIAL_ECHO_MSG("Touch start: ", int(tag));
           #endif
 
           pressed_tag = tag;
@@ -186,8 +185,7 @@ namespace FTDI {
             if (UIData::flags.bits.touch_end_sound) sound.play(unpress_sound);
 
             #if ENABLED(TOUCH_UI_DEBUG)
-              SERIAL_ECHO_START();
-              SERIAL_ECHOLNPAIR("Touch end: ", pressed_tag);
+              SERIAL_ECHO_MSG("Touch end: ", int(pressed_tag));
             #endif
 
             const uint8_t saved_pressed_tag = pressed_tag;

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/ftdi_eve_lib/extended/screen_types.cpp

@@ -43,8 +43,7 @@ void ScreenRef::setScreen(onRedraw_func_t onRedraw_ptr) {
   if (type != 0xFF) {
     setType(type);
     #if ENABLED(TOUCH_UI_DEBUG)
-      SERIAL_ECHO_START();
-      SERIAL_ECHOLNPAIR("New screen: ", type);
+      SERIAL_ECHO_MSG("New screen: ", int(type));
     #endif
   }
 }

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/screens/bio_printing_dialog_box.cpp

@@ -127,8 +127,7 @@ void BioPrintingDialogBox::setStatusMessage(const char* message) {
   storeBackground();
 
   #if ENABLED(TOUCH_UI_DEBUG)
-    SERIAL_ECHO_START();
-    SERIAL_ECHOLNPAIR("New status message: ", message);
+    SERIAL_ECHO_MSG("New status message: ", message);
   #endif
 
   if (AT_SCREEN(BioPrintingDialogBox))

Marlin/src/module/settings.cpp

@@ -2946,7 +2946,7 @@ void MarlinSettings::reset() {
   }
 
   #define CONFIG_ECHO_START()       do{ if (!forReplay) SERIAL_ECHO_START(); }while(0)
-  #define CONFIG_ECHO_MSG(STR)      do{ CONFIG_ECHO_START(); SERIAL_ECHOLNPGM(STR); }while(0)
+  #define CONFIG_ECHO_MSG(V...)     do{ CONFIG_ECHO_START(); SERIAL_ECHOLNPAIR(V); }while(0)
   #define CONFIG_ECHO_HEADING(STR)  config_heading(forReplay, PSTR(STR))
 
   #if HAS_TRINAMIC_CONFIG
@@ -3039,26 +3039,24 @@ void MarlinSettings::reset() {
       }
 
       #if EXTRUDERS == 1
-        CONFIG_ECHO_START();
-        SERIAL_ECHOLNPAIR("  M200 S", int(parser.volumetric_enabled)
-                              , " D", LINEAR_UNIT(planner.filament_size[0])
+        CONFIG_ECHO_MSG("  M200 S", int(parser.volumetric_enabled)
+                            , " D", LINEAR_UNIT(planner.filament_size[0])
+                            #if ENABLED(VOLUMETRIC_EXTRUDER_LIMIT)
+                              , " L", LINEAR_UNIT(planner.volumetric_extruder_limit[0])
+                            #endif
+                       );
+      #else
+        LOOP_L_N(i, EXTRUDERS) {
+          CONFIG_ECHO_MSG("  M200 T", int(i)
+                              , " D", LINEAR_UNIT(planner.filament_size[i])
                               #if ENABLED(VOLUMETRIC_EXTRUDER_LIMIT)
-                                , " L", LINEAR_UNIT(planner.volumetric_extruder_limit[0])
+                                , " L", LINEAR_UNIT(planner.volumetric_extruder_limit[i])
                               #endif
                          );
-      #else
-        LOOP_L_N(i, EXTRUDERS) {
-          CONFIG_ECHO_START();
-          SERIAL_ECHOLNPAIR("  M200 T", int(i)
-                                , " D", LINEAR_UNIT(planner.filament_size[i])
-                                #if ENABLED(VOLUMETRIC_EXTRUDER_LIMIT)
-                                  , " L", LINEAR_UNIT(planner.volumetric_extruder_limit[i])
-                                #endif
-                           );
         }
-        CONFIG_ECHO_START();
-        SERIAL_ECHOLNPAIR("  M200 S", int(parser.volumetric_enabled));
+        CONFIG_ECHO_MSG("  M200 S", int(parser.volumetric_enabled));
       #endif
+
     #endif // EXTRUDERS && !NO_VOLUMETRICS
 
     CONFIG_ECHO_HEADING("Steps per unit:");
@@ -3194,7 +3192,7 @@ void MarlinSettings::reset() {
 
       CONFIG_ECHO_START();
       SERIAL_ECHOLNPAIR_P(
-        PSTR("  M420 S"), planner.leveling_active ? 1 : 0
+        PSTR("  M420 S"), int(planner.leveling_active)
         #if ENABLED(ENABLE_LEVELING_FADE_HEIGHT)
           , SP_Z_STR, LINEAR_UNIT(planner.z_fade_height)
         #endif
@@ -3260,8 +3258,7 @@ void MarlinSettings::reset() {
           #elif ENABLED(BLTOUCH) || (HAS_Z_SERVO_PROBE && defined(Z_SERVO_ANGLES))
             case Z_PROBE_SERVO_NR:
           #endif
-            CONFIG_ECHO_START();
-            SERIAL_ECHOLNPAIR("  M281 P", int(i), " L", servo_angles[i][0], " U", servo_angles[i][1]);
+            CONFIG_ECHO_MSG("  M281 P", int(i), " L", servo_angles[i][0], " U", servo_angles[i][1]);
           default: break;
         }
       }
@@ -3382,8 +3379,7 @@ void MarlinSettings::reset() {
       #endif // PIDTEMP
 
       #if ENABLED(PIDTEMPBED)
-        CONFIG_ECHO_START();
-        SERIAL_ECHOLNPAIR(
+        CONFIG_ECHO_MSG(
             "  M304 P", thermalManager.temp_bed.pid.Kp
           , " I", unscalePID_i(thermalManager.temp_bed.pid.Ki)
           , " D", unscalePID_d(thermalManager.temp_bed.pid.Kd)
@@ -3400,16 +3396,14 @@ void MarlinSettings::reset() {
 
     #if HAS_LCD_CONTRAST
       CONFIG_ECHO_HEADING("LCD Contrast:");
-      CONFIG_ECHO_START();
-      SERIAL_ECHOLNPAIR("  M250 C", ui.contrast);
+      CONFIG_ECHO_MSG("  M250 C", ui.contrast);
     #endif
 
     TERN_(CONTROLLER_FAN_EDITABLE, M710_report(forReplay));
 
     #if ENABLED(POWER_LOSS_RECOVERY)
       CONFIG_ECHO_HEADING("Power-Loss Recovery:");
-      CONFIG_ECHO_START();
-      SERIAL_ECHOLNPAIR("  M413 S", int(recovery.enabled));
+      CONFIG_ECHO_MSG("  M413 S", int(recovery.enabled));
     #endif
 
     #if ENABLED(FWRETRACT)
@@ -3424,8 +3418,7 @@ void MarlinSettings::reset() {
       );
 
       CONFIG_ECHO_HEADING("Recover: S<length> F<units/m>");
-      CONFIG_ECHO_START();
-      SERIAL_ECHOLNPAIR(
+      CONFIG_ECHO_MSG(
           "  M208 S", LINEAR_UNIT(fwretract.settings.retract_recover_extra)
         , " W", LINEAR_UNIT(fwretract.settings.swap_retract_recover_extra)
         , " F", LINEAR_UNIT(MMS_TO_MMM(fwretract.settings.retract_recover_feedrate_mm_s))
@@ -3434,8 +3427,7 @@ void MarlinSettings::reset() {
       #if ENABLED(FWRETRACT_AUTORETRACT)
 
         CONFIG_ECHO_HEADING("Auto-Retract: S=0 to disable, 1 to interpret E-only moves as retract/recover");
-        CONFIG_ECHO_START();
-        SERIAL_ECHOLNPAIR("  M209 S", fwretract.autoretract_enabled ? 1 : 0);
+        CONFIG_ECHO_MSG("  M209 S", int(fwretract.autoretract_enabled));
 
       #endif // FWRETRACT_AUTORETRACT
 
@@ -3780,13 +3772,10 @@ void MarlinSettings::reset() {
     #if ENABLED(LIN_ADVANCE)
       CONFIG_ECHO_HEADING("Linear Advance:");
       #if EXTRUDERS < 2
-        CONFIG_ECHO_START();
-        SERIAL_ECHOLNPAIR("  M900 K", planner.extruder_advance_K[0]);
+        CONFIG_ECHO_MSG("  M900 K", planner.extruder_advance_K[0]);
       #else
-        LOOP_L_N(i, EXTRUDERS) {
-          CONFIG_ECHO_START();
-          SERIAL_ECHOLNPAIR("  M900 T", int(i), " K", planner.extruder_advance_K[i]);
-        }
+        LOOP_L_N(i, EXTRUDERS)
+          CONFIG_ECHO_MSG("  M900 T", int(i), " K", planner.extruder_advance_K[i]);
       #endif
     #endif
 
@@ -3851,8 +3840,7 @@ void MarlinSettings::reset() {
 
     #if HAS_FILAMENT_SENSOR
       CONFIG_ECHO_HEADING("Filament runout sensor:");
-      CONFIG_ECHO_START();
-      SERIAL_ECHOLNPAIR(
+      CONFIG_ECHO_MSG(
         "  M412 S", int(runout.enabled)
         #if HAS_FILAMENT_RUNOUT_DISTANCE
           , " D", LINEAR_UNIT(runout.runout_distance())

Marlin/src/module/temperature.cpp

@@ -1037,8 +1037,7 @@ void Temperature::min_temp_error(const heater_id_t heater_id) {
 
     #if ENABLED(PID_BED_DEBUG)
     {
-      SERIAL_ECHO_START();
-      SERIAL_ECHOLNPAIR(
+      SERIAL_ECHO_MSG(
         " PID_BED_DEBUG : Input ", temp_bed.celsius, " Output ", pid_output,
         #if DISABLED(PID_OPENLOOP)
           STR_PID_DEBUG_PTERM, work_pid.Kp,

Marlin/src/module/tool_change.cpp

@@ -1196,8 +1196,7 @@ void tool_change(const uint8_t new_tool, bool no_move/*=false*/) {
         gcode.process_subcommands_now_P(PSTR(EVENT_GCODE_AFTER_TOOLCHANGE));
     #endif
 
-    SERIAL_ECHO_START();
-    SERIAL_ECHOLNPAIR(STR_ACTIVE_EXTRUDER, int(active_extruder));
+    SERIAL_ECHO_MSG(STR_ACTIVE_EXTRUDER, int(active_extruder));
 
   #endif // HAS_MULTI_EXTRUDER
 }

Marlin/src/sd/cardreader.cpp

@@ -270,10 +270,9 @@ void CardReader::printListing(SdFile parent, const char * const prepend/*=nullpt
       // Get a new directory object using the full path
       // and dive recursively into it.
       SdFile child;
-      if (!child.open(&parent, dosFilename, O_READ)) {
-        SERIAL_ECHO_START();
-        SERIAL_ECHOLNPAIR(STR_SD_CANT_OPEN_SUBDIR, dosFilename);
-      }
+      if (!child.open(&parent, dosFilename, O_READ))
+        SERIAL_ECHO_MSG(STR_SD_CANT_OPEN_SUBDIR, dosFilename);
+
       printListing(child, path);
       // close() is done automatically by destructor of SdFile
     }
@@ -594,8 +593,7 @@ void CardReader::openFileRead(char * const path, const uint8_t subcall_type/*=0*
         filespos[file_subcall_ctr] = sdpos;
 
         // For sub-procedures say 'SUBROUTINE CALL target: "..." parent: "..." pos12345'
-        SERIAL_ECHO_START();
-        SERIAL_ECHOLNPAIR("SUBROUTINE CALL target:\"", path, "\" parent:\"", proc_filenames[file_subcall_ctr], "\" pos", sdpos);
+        SERIAL_ECHO_MSG("SUBROUTINE CALL target:\"", path, "\" parent:\"", proc_filenames[file_subcall_ctr], "\" pos", sdpos);
         file_subcall_ctr++;
         break;
 
@@ -941,10 +939,8 @@ void CardReader::cd(const char * relpath) {
       workDirParents[workDirDepth++] = workDir;
     TERN_(SDCARD_SORT_ALPHA, presort());
   }
-  else {
-    SERIAL_ECHO_START();
-    SERIAL_ECHOLNPAIR(STR_SD_CANT_ENTER_SUBDIR, relpath);
-  }
+  else
+    SERIAL_ECHO_MSG(STR_SD_CANT_ENTER_SUBDIR, relpath);
 }
 
 int8_t CardReader::cdup() {