Apply #pragma once, misc cleanup (#12322)

* Apply #pragma once in headers
* Adjust some thermistors formatting
* Misc cleanup and formatting

Marlin/src/HAL/HAL_AVR/HAL.h

@@ -16,9 +16,7 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-
+#pragma once
-#ifndef _HAL_AVR_H_
-#define _HAL_AVR_H_
 
 // --------------------------------------------------------------------------
 // Includes
@@ -374,5 +372,3 @@ inline void HAL_adc_init(void) {
 
 // AVR compatibility
 #define strtof strtod
-
-#endif // _HAL_AVR_H_

Marlin/src/HAL/HAL_AVR/MarlinSerial.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * MarlinSerial.h - Hardware serial library for Wiring
@@ -30,9 +31,6 @@
  * Templatized 01 October 2018 by Eduardo José Tagle to allow multiple instances
  */
 
-#ifndef _MARLINSERIAL_H_
-#define _MARLINSERIAL_H_
-
 #include "../shared/MarlinSerial.h"
 
 #include <WString.h>
@@ -281,5 +279,3 @@
 #if defined(USBCON) && ENABLED(BLUETOOTH)
   extern HardwareSerial bluetoothSerial;
 #endif
-
-#endif // _MARLINSERIAL_H_

Marlin/src/HAL/HAL_AVR/SanityCheck.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef _SANITYCHECK_AVR_8_BIT_H_
-#define _SANITYCHECK_AVR_8_BIT_H_
 
 /**
  * Test AVR specific configuration values for errors at compile-time.
@@ -116,5 +114,3 @@
     || defined(E4_HARDWARE_SERIAL) )
   #error "Select hardware UART for TMC2208 to use both TMC2208 and ENDSTOP_INTERRUPTS_FEATURE."
 #endif
-
-#endif // _SANITYCHECK_AVR_8_BIT_H_

Marlin/src/HAL/HAL_AVR/ServoTimers.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * ServoTimers.h - Interrupt driven Servo library for Arduino using 16 bit timers- Version 2
@@ -39,9 +40,6 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
-#ifndef _SERVOTIMERS_H_
-#define _SERVOTIMERS_H_
-
 /**
  * Defines for 16 bit timers used with  Servo library
  *
@@ -91,5 +89,3 @@ typedef enum {
   #endif
   _Nbr_16timers
 } timer16_Sequence_t;
-
-#endif // _SERVOTIMERS_H_

Marlin/src/HAL/HAL_AVR/endstop_interrupts.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Endstop Interrupts
@@ -35,9 +36,6 @@
  * (Located in Marlin/buildroot/share/pin_interrupt_test/pin_interrupt_test.ino)
  */
 
-#ifndef _ENDSTOP_INTERRUPTS_H_
-#define _ENDSTOP_INTERRUPTS_H_
-
 #include "../../core/macros.h"
 #include <stdint.h>
 #include "../../module/endstops.h"
@@ -256,5 +254,3 @@ void setup_endstop_interrupts( void ) {
 
   // If we arrive here without raising an assertion, each pin has either an EXT-interrupt or a PCI.
 }
-
-#endif // _ENDSTOP_INTERRUPTS_H_

Marlin/src/HAL/HAL_AVR/fastio_1280.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Pin mapping for the 1280 and 2560
@@ -28,9 +29,6 @@
  *   Logical Pin   : 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx
  */
 
-#ifndef _FASTIO_1280_H_
-#define _FASTIO_1280_H_
-
 #include "fastio_AVR.h"
 
 // change for your board
@@ -1111,5 +1109,3 @@
 #define PL7_WPORT   PORTL
 #define PL7_DDR     DDRL
 #define PL7_PWM     NULL
-
-#endif // _FASTIO_1280_H_

Marlin/src/HAL/HAL_AVR/fastio_1281.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Pin mapping for the 1281 and 2561
@@ -27,9 +28,6 @@
  *   Port:        A0 A1 A2 A3 A4 A5 A6 A7 B0 B1 B2 B3 B4 B5 B6 B7 C0 C1 C2 C3 C4 C5 C6 C7 D0 D1 D2 D3 D4 D5 D6 D7 E0 E1 E2 E3 E4 E5 E6 E7 F0 F1 F2 F3 F4 F5 F6 F7 G0 G1 G2 G3 G4 G5
  */
 
-#ifndef _FASTIO_1281_H_
-#define _FASTIO_1281_H_
-
 #include "fastio_AVR.h"
 
 // change for your board
@@ -715,5 +713,3 @@
 #define PG5_WPORT   PORTG
 #define PG5_DDR     DDRG
 #define PG5_PWM     &OCR0B
-
-#endif // _FASTIO_1281_H_

Marlin/src/HAL/HAL_AVR/fastio_168.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Pin mapping for the 168, 328, and 328P
@@ -27,9 +28,6 @@
  *   Port:        B0 B1 B2 B3 B4 B5 C0 C1 C2 C3 C4 C5 C6 C7 D0 D1 D2 D3 D4 D5 D6 D7
  */
 
-#ifndef _FASTIO_168_H_
-#define _FASTIO_168_H_
-
 #include "fastio_AVR.h"
 
 #define DEBUG_LED   AIO5
@@ -357,5 +355,3 @@
 #define PD7_WPORT   PORTD
 #define PD7_DDR     DDRD
 #define PD7_PWM     NULL
-
-#endif // _FASTIO_168_H_

Marlin/src/HAL/HAL_AVR/fastio_644.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Pin mapping for the 644, 644p, 644pa, and 1284p
@@ -53,9 +54,6 @@
  *                        +--------+
  */
 
-#ifndef _FASTIO_644_H_
-#define _FASTIO_644_H_
-
 #include "fastio_AVR.h"
 
 #define DEBUG_LED   DIO0
@@ -552,5 +550,3 @@
 #define PD7_WPORT   PORTD
 #define PD7_DDR     DDRD
 #define PD7_PWM     OCR2A
-
-#endif // _FASTIO_644_H_

Marlin/src/HAL/HAL_AVR/fastio_AT90USB.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Pin mapping (Teensy) for AT90USB646, 647, 1286, and 1287
@@ -28,9 +29,6 @@
  *            The logical pins 46 and 47 are not supported by Teensyduino, but are supported below as E2 and E3
  */
 
-#ifndef _FASTIO_AT90USB_H_
-#define _FASTIO_AT90USB_H_
-
 #include "fastio_AVR.h"
 
 // change for your board
@@ -697,5 +695,3 @@
 #define TIMER3A 5
 #define TIMER3B 4
 #define TIMER3C 3
-
-#endif // _FASTIO_AT90USB_H_

Marlin/src/HAL/HAL_AVR/fastio_AVR.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Fast I/O Routines for AVR
@@ -26,9 +27,6 @@
  * Contributed by Triffid_Hunter and modified by Kliment, thinkyhead, Bob-the-Kuhn, et.al.
  */
 
-#ifndef _FASTIO_ARDUINO_H_
-#define _FASTIO_ARDUINO_H_
-
 #include <avr/io.h>
 #include "../../core/macros.h"
 
@@ -312,5 +310,3 @@ enum ClockSource2 : char {
 
 // finally - the macro that tells us if a pin is an available hardware PWM
 #define USEABLE_HARDWARE_PWM(p) (PWM_PINS(p) && !PWM_CHK(p))
-
-#endif // _FASTIO_ARDUINO_H_

Marlin/src/HAL/HAL_AVR/math_AVR.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef _MATH_AVR_H_
-#define _MATH_AVR_H_
 
 /**
  * Optimized math functions for AVR
@@ -113,5 +111,3 @@ static FORCE_INLINE uint16_t MultiU16X8toH16(uint8_t charIn1, uint16_t intIn2) {
   );
   return intRes;
 }
-
-#endif // _MATH_AVR_H_

Marlin/src/HAL/HAL_AVR/pinsDebug.h

@@ -19,14 +19,12 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * PWM print routines for Atmel 8 bit AVR CPUs
  */
 
-#ifndef _PINSDEBUG_AVR_8_BIT_
-#define _PINSDEBUG_AVR_8_BIT_
-
 #include "../../inc/MarlinConfig.h"
 
 #define NUMBER_PINS_TOTAL NUM_DIGITAL_PINS
@@ -406,5 +404,3 @@ static void pwm_details(uint8_t pin) {
 #endif
 
 #define PRINT_PIN(p) do {sprintf_P(buffer, PSTR("%3d "), p); SERIAL_ECHO(buffer);} while (0)
-
-#endif // _PINSDEBUG_AVR_8_BIT_

Marlin/src/HAL/HAL_AVR/pinsDebug_Teensyduino.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef _PINSDEBUG_TEENSYSUINO_H_
-#define _PINSDEBUG_TEENSYSUINO_H_
 
 //
 //  some of the pin mapping functions of the Teensduino extension to the Arduino IDE
@@ -111,5 +109,3 @@ const uint8_t PROGMEM digital_pin_to_port_PGM[] = {
                                              // disable the PWMs so we can use it as is
 
 // portModeRegister(pin) is OK
-
-#endif // _PINSDEBUG_TEENSYSUINO_H_

Marlin/src/HAL/HAL_AVR/pinsDebug_plus_70.h

@@ -20,14 +20,12 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Structures for 2560 family boards that use more than 70 pins
  */
 
-#ifndef _PINSDEBUG_PLUS_70_H_
-#define _PINSDEBUG_PLUS_70_H_
-
 #undef NUM_DIGITAL_PINS
 #if MB(BQ_ZUM_MEGA_3D)
   #define NUM_DIGITAL_PINS            85
@@ -336,6 +334,3 @@ const uint8_t PROGMEM digital_pin_to_timer_PGM_plus_70[] = {
  *  PCINT14 J5 76
  *  PCINT15 J6 77
  */
-
-
-#endif // _PINSDEBUG_PLUS_70_H_

Marlin/src/HAL/HAL_AVR/spi_pins.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef _SPI_PINS_H_
-#define _SPI_PINS_H_
 
 /**
  * Define SPI Pins: SCK, MISO, MOSI, SS
@@ -65,6 +63,3 @@
 #ifndef SS_PIN
   #define SS_PIN   AVR_SS_PIN
 #endif
-
-
-#endif // _SPI_PINS_H_

Marlin/src/HAL/HAL_AVR/watchdog_AVR.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef _WATCHDOG_AVR_H_
-#define _WATCHDOG_AVR_H_
 
 #include <avr/wdt.h>
 
@@ -31,5 +29,3 @@ void watchdog_init();
 // Reset watchdog. MUST be called at least every 4 seconds after the
 // first watchdog_init or AVR will go into emergency procedures.
 inline void watchdog_reset() { wdt_reset(); }
-
-#endif // _WATCHDOG_AVR_H_

Marlin/src/HAL/HAL_DUE/HAL.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Description: HAL for Arduino Due and compatible (SAM3X8E)
@@ -26,9 +27,6 @@
  * For ARDUINO_ARCH_SAM
  */
 
-#ifndef _HAL_DUE_H
-#define _HAL_DUE_H
-
 #define CPU_32_BIT
 
 #include <stdint.h>
@@ -189,5 +187,3 @@ char *dtostrf (double __val, signed char __width, unsigned char __prec, char *__
 #ifdef __cplusplus
   }
 #endif
-
-#endif // _HAL_DUE_H

Marlin/src/HAL/HAL_DUE/HAL_timers_Due.h

@@ -18,6 +18,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * HAL for Arduino Due and compatible (SAM3X8E)
@@ -25,9 +26,6 @@
  * For ARDUINO_ARCH_SAM
  */
 
-#ifndef _HAL_TIMERS_DUE_H
-#define _HAL_TIMERS_DUE_H
-
 // --------------------------------------------------------------------------
 // Includes
 // --------------------------------------------------------------------------
@@ -120,5 +118,3 @@ FORCE_INLINE static void HAL_timer_isr_prologue(const uint8_t timer_num) {
 }
 
 #define HAL_timer_isr_epilogue(TIMER_NUM)
-
-#endif // _HAL_TIMERS_DUE_H

Marlin/src/HAL/HAL_DUE/InterruptVectors_Due.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * InterruptVectors_Due.h
@@ -35,11 +36,6 @@
  * Copyright (c) 2017 Eduardo José Tagle. All right reserved
  */
 
-#ifndef INTERRUPTVECTORS_DUE_H
-#define INTERRUPTVECTORS_DUE_H
-
-#include "../../inc/MarlinConfig.h"
-
 #ifdef ARDUINO_ARCH_SAM
 
 // ISR handler type
@@ -49,4 +45,3 @@ typedef void (*pfnISR_Handler)(void);
 pfnISR_Handler install_isr(IRQn_Type irq, pfnISR_Handler newHandler);
 
 #endif // ARDUINO_ARCH_SAM
-#endif // INTERRUPTVECTORS_DUE_H

Marlin/src/HAL/HAL_DUE/MarlinSerialUSB_Due.h

@@ -19,15 +19,13 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * MarlinSerialUSB_Due.h - Hardware Serial over USB (CDC) library for Arduino DUE
  * Copyright (c) 2017 Eduardo José Tagle. All right reserved
  */
 
-#ifndef MARLINSERIALUSB_DUE_H
-#define MARLINSERIALUSB_DUE_H
-
 #include "../../inc/MarlinConfig.h"
 
 #if SERIAL_PORT == -1
@@ -92,4 +90,3 @@ private:
 extern MarlinSerialUSB customizedSerial1;
 
 #endif // SERIAL_PORT == -1
-#endif // MARLINSERIAL_DUE_H

Marlin/src/HAL/HAL_DUE/endstop_interrupts.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Endstop Interrupts
@@ -34,9 +35,6 @@
  * (Located in Marlin/buildroot/share/pin_interrupt_test/pin_interrupt_test.ino)
  */
 
-#ifndef _ENDSTOP_INTERRUPTS_H_
-#define _ENDSTOP_INTERRUPTS_H_
-
 #include "../../module/endstops.h"
 
 // One ISR for all EXT-Interrupts
@@ -82,5 +80,3 @@ void setup_endstop_interrupts(void) {
     attachInterrupt(digitalPinToInterrupt(Z_MIN_PROBE_PIN), endstop_ISR, CHANGE);
   #endif
 }
-
-#endif //_ENDSTOP_INTERRUPTS_H_

Marlin/src/HAL/HAL_DUE/fastio_Due.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Fast I/O Routines for SAM3X8E
@@ -36,9 +37,6 @@
  * leads to less efficient compiled code!!
  */
 
-#ifndef _FASTIO_DUE_H
-#define _FASTIO_DUE_H
-
 #include <pins_arduino.h>
 
 /**
@@ -495,5 +493,3 @@
   #define DIO100_PIN 11
   #define DIO100_WPORT PIOC
 #endif
-
-#endif // _FASTIO_DUE_H

Marlin/src/HAL/HAL_DUE/spi_pins.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef SPI_PINS_H_
-#define SPI_PINS_H_
 
 /**
  * Define SPI Pins: SCK, MISO, MOSI, SS
@@ -61,5 +59,3 @@
 
 /* A.28, A.29, B.21, C.26, C.29 */
 #define SS_PIN            SDSS
-
-#endif /* SPI_PINS_H_ */

Marlin/src/HAL/HAL_DUE/usb/arduino_due_x.h

@@ -40,15 +40,12 @@
  * \asf_license_stop
  *
  */
-/*
+#pragma once
+
+/**
  * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
  */
 
-#ifndef ARDUINO_DUE_X_H_INCLUDED
-#define ARDUINO_DUE_X_H_INCLUDED
-
-/* ------------------------------------------------------------------------ */
-
 /**
  *  \page arduino_due_x_opfreq "Arduino Due/X - Operating frequencies"
  *  This page lists several definition related to the board operating frequency
@@ -98,6 +95,3 @@
 /*! Active level of the USB_VBOF output pin. */
 #define USB_VBOF_ACTIVE_LEVEL       LOW
 /* ------------------------------------------------------------------------ */
-
-
-#endif /* ARDUINO_DUE_X_H_INCLUDED */

Marlin/src/HAL/HAL_DUE/watchdog_Due.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef WATCHDOG_DUE_H
-#define WATCHDOG_DUE_H
 
 // Arduino Due core now has watchdog support
 
@@ -33,5 +31,3 @@ void watchdog_init();
 // Reset watchdog. MUST be called at least every 4 seconds after the
 // first watchdog_init or AVR will go into emergency procedures.
 inline void watchdog_reset() { watchdogReset(); }
-
-#endif // WATCHDOG_DUE_H

Marlin/src/HAL/HAL_ESP32/HAL.h

@@ -16,14 +16,12 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
+#pragma once
 
 /**
  * Description: HAL for Espressif ESP32 WiFi
  */
 
-#ifndef _HAL_ESP32_H
-#define _HAL_ESP32_H
-
 #define CPU_32_BIT
 
 // --------------------------------------------------------------------------
@@ -123,5 +121,3 @@ void HAL_adc_start_conversion (uint8_t adc_pin);
 #define HAL_INIT 1
 void HAL_idletask(void);
 void HAL_init(void);
-
-#endif // _HAL_ESP32_H

Marlin/src/HAL/HAL_ESP32/HAL_timers_ESP32.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef _HAL_TIMERS_ESP32_H
-#define _HAL_TIMERS_ESP32_H
 
 // --------------------------------------------------------------------------
 // Includes
@@ -104,5 +102,3 @@ bool HAL_timer_interrupt_enabled(const uint8_t timer_num);
 
 #define HAL_timer_isr_prologue(TIMER_NUM)
 #define HAL_timer_isr_epilogue(TIMER_NUM)
-
-#endif // _HAL_TIMERS_ESP32_H

Marlin/src/HAL/HAL_ESP32/endstop_interrupts.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Endstop Interrupts
@@ -34,9 +35,6 @@
  * (Located in Marlin/buildroot/share/pin_interrupt_test/pin_interrupt_test.ino)
  */
 
-#ifndef _ENDSTOP_INTERRUPTS_H_
-#define _ENDSTOP_INTERRUPTS_H_
-
 #include "../../module/endstops.h"
 
 // One ISR for all EXT-Interrupts
@@ -77,5 +75,3 @@ void setup_endstop_interrupts(void) {
     attachInterrupt(digitalPinToInterrupt(Z_MIN_PROBE_PIN), endstop_ISR, CHANGE);
   #endif
 }
-
-#endif //_ENDSTOP_INTERRUPTS_H_

Marlin/src/HAL/HAL_ESP32/fastio_ESP32.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef _FASTIO_ESP32_H
-#define _FASTIO_ESP32_H
 
 /**
  * Utility functions
@@ -64,9 +62,3 @@
 // TWI (I2C)
 #define SCL        5
 #define SDA        4
-
-//
-// pins
-//
-
-#endif // _FASTIO_ESP32_H

Marlin/src/HAL/HAL_ESP32/ota.h

@@ -16,11 +16,7 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-
+#pragma once
-#ifndef _HAL_OTA_H
-#define _HAL_OTA_H
 
 void OTA_init();
 void OTA_handle();
-
-#endif

Marlin/src/HAL/HAL_ESP32/spi_pins.h

@@ -16,13 +16,9 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef SPI_PINS_H_
-#define SPI_PINS_H_
 
 #define SS_PIN    5
 #define SCK_PIN  18
 #define MISO_PIN 19
 #define MOSI_PIN 23
-
-#endif // SPI_PINS_H_

Marlin/src/HAL/HAL_ESP32/watchdog_ESP32.h

@@ -19,14 +19,10 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef WATCHDOG_ESP32_H
-#define WATCHDOG_ESP32_H
 
 // Initialize watchdog with a 4 second interrupt time
 void watchdog_init();
 
 // Reset watchdog.
-inline void watchdog_reset() {};
+inline void watchdog_reset() { }
-
-#endif // WATCHDOG_ESP32_H

Marlin/src/HAL/HAL_LPC1768/HAL.h

@@ -19,15 +19,13 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * HAL_LPC1768/HAL.h
  * Hardware Abstraction Layer for NXP LPC1768
  */
 
-#ifndef _HAL_LPC1768_H_
-#define _HAL_LPC1768_H_
-
 #define CPU_32_BIT
 #define HAL_INIT
 
@@ -156,5 +154,3 @@ int16_t PARSED_PIN_INDEX(const char code, const int16_t dval);
 
 #define HAL_IDLETASK 1
 void HAL_idletask(void);
-
-#endif // _HAL_LPC1768_H_

Marlin/src/HAL/HAL_LPC1768/HAL_timers.h

@@ -18,15 +18,13 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  *
  * HAL For LPC1768
  */
 
-#ifndef _HAL_TIMERS_H
-#define _HAL_TIMERS_H
-
 // --------------------------------------------------------------------------
 // Includes
 // --------------------------------------------------------------------------
@@ -166,5 +164,3 @@ FORCE_INLINE static void HAL_timer_isr_prologue(const uint8_t timer_num) {
 }
 
 #define HAL_timer_isr_epilogue(TIMER_NUM)
-
-#endif // _HAL_TIMERS_H

Marlin/src/HAL/HAL_LPC1768/MarlinSerial.h

@@ -19,9 +19,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
-#ifndef MARLINSERIAL_H
-#define MARLINSERIAL_H
 #include <HardwareSerial.h>
 #include <WString.h>
 
@@ -33,7 +32,6 @@
 #ifndef SERIAL_PORT
   #define SERIAL_PORT 0
 #endif
-
 #ifndef RX_BUFFER_SIZE
   #define RX_BUFFER_SIZE 128
 #endif
@@ -67,5 +65,3 @@ extern MarlinSerial MSerial;
 extern MarlinSerial MSerial1;
 extern MarlinSerial MSerial2;
 extern MarlinSerial MSerial3;
-
-#endif // MARLINSERIAL_H

Marlin/src/HAL/HAL_LPC1768/MarlinServo.h

@@ -38,6 +38,7 @@
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
+#pragma once
 
 /**
  * Based on "servo.h - Interrupt driven Servo library for Arduino using 16 bit timers -
@@ -47,9 +48,6 @@
  *
  */
 
-#ifndef SERVO_PRIVATE_H
-#define SERVO_PRIVATE_H
-
 #include <Servo.h>
 
 class MarlinServo: public Servo {
@@ -70,5 +68,3 @@ class MarlinServo: public Servo  {
 };
 
 #define HAL_SERVO_LIB MarlinServo
-
-#endif // SERVO_PRIVATE_H

Marlin/src/HAL/HAL_LPC1768/endstop_interrupts.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Endstop Interrupts
@@ -34,9 +35,6 @@
  * (Located in Marlin/buildroot/share/pin_interrupt_test/pin_interrupt_test.ino)
  */
 
-#ifndef _ENDSTOP_INTERRUPTS_H_
-#define _ENDSTOP_INTERRUPTS_H_
-
 #include "../../module/endstops.h"
 
 // One ISR for all EXT-Interrupts
@@ -104,5 +102,3 @@ void setup_endstop_interrupts(void) {
     attachInterrupt(digitalPinToInterrupt(Z_MIN_PROBE_PIN), endstop_ISR, CHANGE);
   #endif
 }
-
-#endif //_ENDSTOP_INTERRUPTS_H_

Marlin/src/HAL/HAL_LPC1768/fastio.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Fast I/O Routines for LPC1768/9
@@ -32,9 +33,6 @@
  * For TARGET LPC1768
  */
 
-#ifndef _FASTIO_LPC1768_H
-#define _FASTIO_LPC1768_H
-
 #include <Arduino.h>
 
 #define USEABLE_HARDWARE_PWM(pin) TRUE // all pins are PWM capable
@@ -123,5 +121,3 @@
 
 // Shorthand
 #define OUT_WRITE(IO,V)   do{ SET_OUTPUT(IO); WRITE(IO,V); }while(0)
-
-#endif // _FASTIO_LPC1768_H

Marlin/src/HAL/HAL_LPC1768/include/digipot_mcp4451_I2C_routines.h

@@ -19,13 +19,11 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 // adapted from  I2C/master/master.c example
 //   https://www-users.cs.york.ac.uk/~pcc/MCP/HAPR-Course-web/CMSIS/examples/html/master_8c_source.html
 
-#ifndef _DIGIPOT_MCP4451_I2C_ROUTINES_H_
-#define _DIGIPOT_MCP4451_I2C_ROUTINES_H_
-
 #define USEDI2CDEV_M  1  // use I2C1 controller
 
 #if USEDI2CDEV_M == 0
@@ -53,5 +51,3 @@ uint8_t digipot_mcp4451_send_byte(uint8_t data);
 #ifdef __cplusplus
   }
 #endif
-
-#endif // _DIGIPOT_MCP4451_I2C_ROUTINES_H_

Marlin/src/HAL/HAL_LPC1768/spi_pins.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef SPI_PINS_LPC1768_H
-#define SPI_PINS_LPC1768_H
 
 #include "src/core/macros.h"
 
@@ -54,5 +52,3 @@
   #undef SDSS
   #define SDSS              SS_PIN
 #endif
-
-#endif // SPI_PINS_LPC1768_H

Marlin/src/HAL/HAL_LPC1768/watchdog.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef WATCHDOG_LPC1768_H
-#define WATCHDOG_LPC1768_H
 
 #define RST_POWER_ON   1
 #define RST_EXTERNAL   2
@@ -34,5 +32,3 @@ void watchdog_init(void);
 void watchdog_reset(void);
 void HAL_clear_reset_source(void);
 uint8_t HAL_get_reset_source(void);
-
-#endif /* WATCHDOG_H */

Marlin/src/HAL/HAL_STM32F1/HAL.h

@@ -20,14 +20,12 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * HAL for stm32duino.com based on Libmaple and compatible (STM32F1)
  */
 
-#ifndef _HAL_STM32F1_H
-#define _HAL_STM32F1_H
-
 #define CPU_32_BIT
 #undef DEBUG_NONE
 
@@ -251,5 +249,3 @@ void HAL_enable_AdcFreerun(void);
 
 #define JTAG_DISABLE() afio_cfg_debug_ports(AFIO_DEBUG_SW_ONLY)
 #define JTAGSWD_DISABLE() afio_cfg_debug_ports(AFIO_DEBUG_NONE)
-
-#endif // _HAL_STM32F1_H

Marlin/src/HAL/HAL_STM32F1/HAL_Servo_Stm32f1.h

@@ -20,9 +20,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef HAL_SERVO_STM32F1_H
-#define HAL_SERVO_STM32F1_H
 
 // Pin number of unattached pins
 #define NOT_ATTACHED                    (-1)
@@ -53,5 +51,3 @@ class libServo {
     int32_t minAngle;
     int32_t maxAngle;
 };
-
-#endif // HAL_SERVO_STM32F1_H

Marlin/src/HAL/HAL_STM32F1/HAL_timers_Stm32f1.h

@@ -19,14 +19,12 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * HAL for stm32duino.com based on Libmaple and compatible (STM32F1)
  */
 
-#ifndef _HAL_TIMERS_STM32F1_H
-#define _HAL_TIMERS_STM32F1_H
-
 // --------------------------------------------------------------------------
 // Includes
 // --------------------------------------------------------------------------
@@ -167,5 +165,3 @@ FORCE_INLINE static void HAL_timer_isr_prologue(const uint8_t timer_num) {
 }
 
 #define HAL_timer_isr_epilogue(TIMER_NUM)
-
-#endif // _HAL_TIMERS_STM32F1_H

Marlin/src/HAL/HAL_STM32F1/endstop_interrupts.h

@@ -20,6 +20,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Endstop interrupts for Libmaple STM32F1 based targets.
@@ -46,9 +47,6 @@
  * (Located in Marlin/buildroot/share/pin_interrupt_test/pin_interrupt_test.ino)
  */
 
-#ifndef _ENDSTOP_INTERRUPTS_H_
-#define _ENDSTOP_INTERRUPTS_H_
-
 #include "../../module/endstops.h"
 
 // One ISR for all EXT-Interrupts
@@ -89,5 +87,3 @@ void setup_endstop_interrupts(void) {
     attachInterrupt(Z_MIN_PROBE_PIN, endstop_ISR, CHANGE);
   #endif
 }
-
-#endif //_ENDSTOP_INTERRUPTS_H_

Marlin/src/HAL/HAL_STM32F1/fastio_Stm32f1.h

@@ -20,15 +20,13 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Fast I/O interfaces for STM32F1
  * These use GPIO functions instead of Direct Port Manipulation, as on AVR.
  */
 
-#ifndef _FASTIO_STM32F1_H
-#define _FASTIO_STM32F1_H
-
 #include <libmaple/gpio.h>
 
 #define READ(IO)              (PIN_MAP[IO].gpio_device->regs->IDR & (1U << PIN_MAP[IO].gpio_bit) ? HIGH : LOW)
@@ -52,5 +50,3 @@
 
 #define PWM_PIN(p) true
 #define USEABLE_HARDWARE_PWM(p) PWM_PIN(p)
-
-#endif // _FASTIO_STM32F1_H

Marlin/src/HAL/HAL_STM32F1/spi_pins.h

@@ -16,14 +16,12 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * HAL for stm32duino.com based on Libmaple and compatible (STM32F1)
  */
 
-#ifndef SPI_PINS_H_
-#define SPI_PINS_H_
-
 /**
  * Define SPI Pins: SCK, MISO, MOSI, SS
  *
@@ -33,5 +31,3 @@
 #define MISO_PIN  PA6
 #define MOSI_PIN  PA7
 #define SS_PIN    PA4
-
-#endif // SPI_PINS_H_

Marlin/src/HAL/HAL_STM32F1/watchdog_Stm32f1.h

@@ -19,14 +19,12 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * HAL for stm32duino.com based on Libmaple and compatible (STM32F1)
  */
 
-#ifndef WATCHDOG_STM32F1_H
-#define WATCHDOG_STM32F1_H
-
 #include <libmaple/iwdg.h>
 
 #include "../../inc/MarlinConfig.h"
@@ -51,5 +49,3 @@ inline void watchdog_reset() {
   #endif
   iwdg_feed();
 }
-
-#endif // WATCHDOG_STM32F1_H

Marlin/src/HAL/HAL_STM32F4/EEPROM_Emul/eeprom_emul.h

@@ -45,10 +45,7 @@
   *
   ******************************************************************************
   */
-
+#pragma once
-/* Define to prevent recursive inclusion -------------------------------------*/
-#ifndef __EEEPROM_EMUL_H
-#define __EEEPROM_EMUL_H
 
 // --------------------------------------------------------------------------
 // Includes
@@ -112,6 +109,4 @@ uint16_t EE_Initialize(void);
 uint16_t EE_ReadVariable(uint16_t VirtAddress, uint16_t* Data);
 uint16_t EE_WriteVariable(uint16_t VirtAddress, uint16_t Data);
 
-#endif /* __EEEPROM_H */
-
 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

Marlin/src/HAL/HAL_STM32F4/HAL.h

@@ -20,9 +20,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef _HAL_STM32F4_H
-#define _HAL_STM32F4_H
 
 #define CPU_32_BIT
 #undef DEBUG_NONE
@@ -251,5 +249,3 @@ void HAL_enable_AdcFreerun(void);
 
 #define JTAG_DISABLE() afio_cfg_debug_ports(AFIO_DEBUG_SW_ONLY)
 #define JTAGSWD_DISABLE() afio_cfg_debug_ports(AFIO_DEBUG_NONE)
-
-#endif // _HAL_STM32F4_H

Marlin/src/HAL/HAL_STM32F4/HAL_Servo_STM32F4.h

@@ -20,9 +20,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef HAL_SERVO_STM32F4_H
-#define HAL_SERVO_STM32F4_H
 
 #include <Servo.h>
 
@@ -37,5 +35,3 @@ private:
     uint16_t max_ticks;
     uint8_t servoIndex;               // index into the channel data for this servo
 };
-
-#endif // HAL_SERVO_STM32F4_H

Marlin/src/HAL/HAL_STM32F4/HAL_timers_STM32F4.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef _HAL_TIMERS_STM32F4_H
-#define _HAL_TIMERS_STM32F4_H
 
 // --------------------------------------------------------------------------
 // Includes
@@ -130,5 +128,3 @@ FORCE_INLINE static hal_timer_t HAL_timer_get_compare(const uint8_t timer_num) {
 #endif
 
 #define HAL_timer_isr_epilogue(TIMER_NUM)
-
-#endif // _HAL_TIMERS_STM32F4_H

Marlin/src/HAL/HAL_STM32F4/endstop_interrupts.h

@@ -20,9 +20,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef _ENDSTOP_INTERRUPTS_H_
-#define _ENDSTOP_INTERRUPTS_H_
 
 #include "../../module/endstops.h"
 
@@ -64,5 +62,3 @@ void setup_endstop_interrupts(void) {
     attachInterrupt(Z_MIN_PROBE_PIN, endstop_ISR, CHANGE);
   #endif
 }
-
-#endif //_ENDSTOP_INTERRUPTS_H_

Marlin/src/HAL/HAL_STM32F4/fastio_STM32F4.h

@@ -20,15 +20,13 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Fast I/O interfaces for STM32F4
  * These use GPIO functions instead of Direct Port Manipulation, as on AVR.
  */
 
-#ifndef _FASTIO_STM32F4_H
-#define _FASTIO_STM32F4_H
-
 #undef _BV
 #define _BV(b) (1 << (b))
 
@@ -151,5 +149,3 @@
 #define PE13 _STM32_PIN(E, 13)
 #define PE14 _STM32_PIN(E, 14)
 #define PE15 _STM32_PIN(E, 15)
-
-#endif // _FASTIO_STM32F4_H

Marlin/src/HAL/HAL_STM32F4/watchdog_STM32F4.h

@@ -19,15 +19,9 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef WATCHDOG_STM32F4_H
-#define WATCHDOG_STM32F4_H
-
-#include "../../inc/MarlinConfig.h"
 
 extern IWDG_HandleTypeDef hiwdg;
 
 void watchdog_init();
 void watchdog_reset();
-
-#endif // WATCHDOG_STM32F1_H

Marlin/src/HAL/HAL_STM32F7/EEPROM_Emul/eeprom_emul.h

@@ -45,10 +45,7 @@
   *
   ******************************************************************************
   */
-
+#pragma once
-/* Define to prevent recursive inclusion -------------------------------------*/
-#ifndef __EEEPROM_EMUL_H
-#define __EEEPROM_EMUL_H
 
 // --------------------------------------------------------------------------
 // Includes
@@ -113,6 +110,4 @@ uint16_t EE_Initialize(void);
 uint16_t EE_ReadVariable(uint16_t VirtAddress, uint16_t* Data);
 uint16_t EE_WriteVariable(uint16_t VirtAddress, uint16_t Data);
 
-#endif /* __EEEPROM_H */
-
 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

Marlin/src/HAL/HAL_STM32F7/HAL.h

@@ -20,9 +20,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef _HAL_STM32F7_H
-#define _HAL_STM32F7_H
 
 #define CPU_32_BIT
 #undef DEBUG_NONE
@@ -234,5 +232,3 @@ void HAL_enable_AdcFreerun(void);
 #define GET_PIN_MAP_PIN(index) index
 #define GET_PIN_MAP_INDEX(pin) pin
 #define PARSED_PIN_INDEX(code, dval) parser.intval(code, dval)
-
-#endif // _HAL_STM32F7_H

Marlin/src/HAL/HAL_STM32F7/HAL_Servo_STM32F7.h

@@ -20,9 +20,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef HAL_SERVO_STM32F7_H
-#define HAL_SERVO_STM32F7_H
 
 #include <../../libraries/Servo/src/Servo.h>
 
@@ -37,5 +35,3 @@ private:
     uint16_t max_ticks;
     uint8_t servoIndex;               // index into the channel data for this servo
 };
-
-#endif // HAL_SERVO_STM32F7_H

Marlin/src/HAL/HAL_STM32F7/HAL_timers_STM32F7.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef _HAL_TIMERS_STM32F7_H
-#define _HAL_TIMERS_STM32F7_H
 
 // --------------------------------------------------------------------------
 // Includes
@@ -101,5 +99,3 @@ hal_timer_t HAL_timer_get_compare(const uint8_t timer_num);
 uint32_t HAL_timer_get_count(const uint8_t timer_num);
 void HAL_timer_isr_prologue(const uint8_t timer_num);
 #define HAL_timer_isr_epilogue(TIMER_NUM)
-
-#endif // _HAL_TIMERS_STM32F7_H

Marlin/src/HAL/HAL_STM32F7/TMC2660.h

@@ -24,12 +24,9 @@
  * THE SOFTWARE.
  *
  */
+#pragma once
 
-#include "../../inc/MarlinConfig.h"
+#include <stdint.h>
-
-// ensure this library description is only included once
-#ifndef _TMC26XSTEPPER_H_
-#define _TMC26XSTEPPER_H_
 
 //! return value for TMC26XStepper.getOverTemperature() if there is a overtemperature situation in the TMC chip
 /*!
@@ -601,5 +598,3 @@ class TMC26XStepper {
     // SPI sender
     inline void send262(uint32_t datagram);
 };
-
-#endif // _TMC26XSTEPPER_H_

Marlin/src/HAL/HAL_STM32F7/endstop_interrupts.h

@@ -20,11 +20,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-
-
-#ifndef _ENDSTOP_INTERRUPTS_H_
-#define _ENDSTOP_INTERRUPTS_H_
 
 #include "../../module/endstops.h"
 
@@ -66,5 +62,3 @@ void setup_endstop_interrupts(void) {
     attachInterrupt(Z_MIN_PROBE_PIN, endstop_ISR, CHANGE);
   #endif
 }
-
-#endif //_ENDSTOP_INTERRUPTS_H_

Marlin/src/HAL/HAL_STM32F7/fastio_STM32F7.h

@@ -20,15 +20,13 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Fast I/O interfaces for STM32F7
  * These use GPIO functions instead of Direct Port Manipulation, as on AVR.
  */
 
-#ifndef _FASTIO_STM32F7_H
-#define _FASTIO_STM32F7_H
-
 #define _BV(b) (1 << (b))
 
 #define READ(IO)                digitalRead(IO)
@@ -186,5 +184,3 @@
 #define PG13 _STM32_PIN(G, 13)
 #define PG14 _STM32_PIN(G, 14)
 #define PG15 _STM32_PIN(G, 15)
-
-#endif // _FASTIO_STM32F7_H

Marlin/src/HAL/HAL_STM32F7/watchdog_STM32F7.h

@@ -19,15 +19,9 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef WATCHDOG_STM32F7_H
-#define WATCHDOG_STM32F7_H
-
-#include "../../inc/MarlinConfig.h"
 
 extern IWDG_HandleTypeDef hiwdg;
 
 void watchdog_init();
 void watchdog_reset();
-
-#endif // WATCHDOG_STM32F1_H

Marlin/src/HAL/HAL_TEENSY35_36/HAL.h

@@ -19,14 +19,12 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Description: HAL for Teensy 3.5 and Teensy 3.6
  */
 
-#ifndef _HAL_TEENSY_H
-#define _HAL_TEENSY_H
-
 #define CPU_32_BIT
 
 // --------------------------------------------------------------------------
@@ -167,9 +165,3 @@ uint16_t HAL_adc_get_result(void);
 #define GET_PIN_MAP_PIN(index) index
 #define GET_PIN_MAP_INDEX(pin) pin
 #define PARSED_PIN_INDEX(code, dval) parser.intval(code, dval)
-
-// --------------------------------------------------------------------------
-//
-// --------------------------------------------------------------------------
-
-#endif // _HAL_TEENSY_H

Marlin/src/HAL/HAL_TEENSY35_36/HAL_Servo_Teensy.h

@@ -1,5 +1,25 @@
-#ifndef _HAL_SERVO_TEENSY_H_
+/**
-#define _HAL_SERVO_TEENSY_H_
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
 
 #include <Servo.h>
 
@@ -14,5 +34,3 @@ class libServo : public Servo {
      uint16_t max_ticks;
      uint8_t servoIndex;               // index into the channel data for this servo
 };
-
-#endif // _HAL_SERVO_TEENSY_H_

Marlin/src/HAL/HAL_TEENSY35_36/HAL_timers_Teensy.h

@@ -1,23 +1,23 @@
-/* **************************************************************************
+/**
-
+ * Marlin 3D Printer Firmware
- Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
- Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
- Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
+ *
-
+ * This program is free software: you can redistribute it and/or modify
- This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
- it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
- the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
- (at your option) any later version.
+ *
-
+ * This program is distributed in the hope that it will be useful,
- This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
- GNU General Public License for more details.
+ *
-
+ * You should have received a copy of the GNU General Public License
- You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
-****************************************************************************/
+#pragma once
 
 /**
  * Description: HAL for
@@ -25,9 +25,6 @@
  * Teensy3.6 (__MK66FX1M0__)
  */
 
-#ifndef _HAL_TIMERS_TEENSY_H
-#define _HAL_TIMERS_TEENSY_H
-
 // --------------------------------------------------------------------------
 // Includes
 // --------------------------------------------------------------------------
@@ -108,5 +105,3 @@ bool HAL_timer_interrupt_enabled(const uint8_t timer_num);
 
 void HAL_timer_isr_prologue(const uint8_t timer_num);
 #define HAL_timer_isr_epilogue(TIMER_NUM)
-
-#endif // _HAL_TIMERS_TEENSY_H

Marlin/src/HAL/HAL_TEENSY35_36/endstop_interrupts.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Endstop Interrupts
@@ -34,9 +35,6 @@
  * (Located in Marlin/buildroot/share/pin_interrupt_test/pin_interrupt_test.ino)
  */
 
-#ifndef _ENDSTOP_INTERRUPTS_H_
-#define _ENDSTOP_INTERRUPTS_H_
-
 #include "../../module/endstops.h"
 
 // One ISR for all EXT-Interrupts
@@ -81,5 +79,3 @@ void setup_endstop_interrupts( void ) {
     attachInterrupt(digitalPinToInterrupt(Z_MIN_PROBE_PIN), endstop_ISR, CHANGE);
   #endif
 }
-
-#endif //_ENDSTOP_INTERRUPTS_H_

Marlin/src/HAL/HAL_TEENSY35_36/fastio_Teensy.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Fast I/O Routines for Teensy 3.5 and Teensy 3.6
@@ -26,9 +27,6 @@
  * Contributed by Triffid_Hunter and modified by Kliment, thinkyhead, Bob-the-Kuhn, et.al.
  */
 
-#ifndef _FASTIO_TEENSY_H
-#define _FASTIO_TEENSY_H
-
 #ifndef MASK
   #define MASK(PIN) (1 << PIN)
 #endif
@@ -91,5 +89,3 @@
  */
 
 #define DIO0_PIN 8
-
-#endif  /* _FASTIO_TEENSY_H */

Marlin/src/HAL/HAL_TEENSY35_36/spi_pins.h

@@ -19,13 +19,9 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef SPI_PINS_H_
-#define SPI_PINS_H_
 
 #define SCK_PIN   13
 #define MISO_PIN  12
 #define MOSI_PIN  11
 #define SS_PIN    20 // SDSS // A.28, A.29, B.21, C.26, C.29
-
-#endif /* SPI_PINS_H_ */

Marlin/src/HAL/HAL_TEENSY35_36/watchdog_Teensy.h

@@ -19,13 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef WATCHDOG_TEENSY_H
-#define WATCHDOG_TEENSY_H
-
-#include "HAL.h"
-
-// Arduino Due core now has watchdog support
 
 void watchdog_init();
 
@@ -34,5 +28,3 @@ inline void watchdog_reset() {
   WDOG_REFRESH = 0xA602;
   WDOG_REFRESH = 0xB480;
 }
-
-#endif // WATCHDOG_TEENSY_H

Marlin/src/HAL/platforms.h

@@ -1,7 +1,25 @@
-#ifndef _HAL_PLATFORMS_H_
+/**
-#define _HAL_PLATFORMS_H_
+ * Marlin 3D Printer Firmware
-
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
-#ifndef HAL_PLATFORM
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
 
 #ifdef __AVR__
   #define HAL_PLATFORM HAL_AVR
@@ -27,10 +45,6 @@
   #error "Unsupported Platform!"
 #endif
 
-#endif // HAL_PLATFORM
-
 #define XSTR_(M) #M
 #define XSTR(M) XSTR_(M)
 #define HAL_PATH(PATH, NAME) XSTR(PATH/HAL_PLATFORM/NAME)
-
-#endif // _HAL_PLATFORMS_H_

Marlin/src/HAL/shared/HAL_SPI.h

@@ -19,15 +19,13 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * HAL/HAL_SPI.h
  * Core Marlin definitions for SPI, implemented in the HALs
  */
 
-#ifndef _HAL_SPI_H_
-#define _HAL_SPI_H_
-
 #include <stdint.h>
 
 /**
@@ -78,5 +76,3 @@ void spiRead(uint8_t* buf, uint16_t nbyte);
 void spiSendBlock(uint8_t token, const uint8_t* buf);
 /** Begin SPI transaction, set clock, bit order, data mode */
 void spiBeginTransaction(uint32_t spiClock, uint8_t bitOrder, uint8_t dataMode);
-
-#endif // _HAL_SPI_H_

Marlin/src/HAL/shared/backtrace/backtrace.h

@@ -19,11 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef _BACKTRACE_H_
-#define _BACKTRACE_H_
 
 // Perform a backtrace to the serial port
 void backtrace(void);
-
-#endif

Marlin/src/HAL/shared/backtrace/unwarm.h

@@ -11,8 +11,7 @@
  * File Description: Internal interface between the ARM unwinding sub-modules.
  **************************************************************************/
 
-#ifndef UNWARM_H
+#pragma once
-#define UNWARM_H
 
 #include "unwinder.h"
 
@@ -139,5 +138,3 @@ bool UnwReportRetAddr(UnwState * const state, uint32_t addr);
 bool UnwMemWriteRegister(UnwState * const state, const uint32_t addr, const RegData * const reg);
 bool UnwMemReadRegister(UnwState * const state, const uint32_t addr, RegData * const reg);
 void UnwMemHashGC(UnwState * const state);
-
-#endif // UNWARM_H

Marlin/src/HAL/shared/backtrace/unwarmbytab.h

@@ -12,8 +12,7 @@
  * File Description: Interface to the memory tracking sub-system.
  **************************************************************************/
 
-#ifndef UNWARMBYTAB_H
+#pragma once
-#define UNWARMBYTAB_H
 
 #include "unwarm.h"
 
@@ -30,5 +29,3 @@ typedef struct {
 } UnwTabEntry;
 
 UnwResult UnwindByTableStart(UnwindFrame* frame, const UnwindCallbacks *cb, void *data);
-
-#endif // UNWARMBYTAB_H

Marlin/src/HAL/shared/backtrace/unwarmmem.h

@@ -12,14 +12,10 @@
  * File Description: Interface to the memory tracking sub-system.
  **************************************************************************/
 
-#ifndef UNWARMMEM_H
+#pragma once
-#define UNWARMMEM_H
 
 #include "unwarm.h"
 
 bool UnwMemHashRead(MemData * const memData, uint32_t addr, uint32_t * const data, bool * const tracked);
 bool UnwMemHashWrite(MemData * const memData, uint32_t addr, uint32_t val, bool valValid);
 void UnwMemHashGC(UnwState * const state);
-
-#endif
-

Marlin/src/HAL/shared/backtrace/unwinder.h

@@ -13,8 +13,7 @@
  * Interface to the ARM stack unwinding module.
  **************************************************************************/
 
-#ifndef UNWINDER_H
+#pragma once
-#define UNWINDER_H
 
 #include <stdint.h>
 
@@ -171,5 +170,3 @@ typedef struct {
  * get function names in the traceback. Otherwise, you will not.
  */
 UnwResult UnwindStart(UnwindFrame* frame, const UnwindCallbacks *cb, void *data);
-
-#endif /* UNWINDER_H */

Marlin/src/HAL/shared/backtrace/unwmemaccess.h

@@ -12,8 +12,7 @@
  * File Description: Utility functions to access memory
  **************************************************************************/
 
-#ifndef UNWMEMACCESS_H
+#pragma once
-#define UNWMEMACCESS_H
 
 #include "unwarm.h"
 #include <stdint.h>
@@ -21,6 +20,3 @@
 bool UnwReadW(const uint32_t a, uint32_t *v);
 bool UnwReadH(const uint32_t a, uint16_t *v);
 bool UnwReadB(const uint32_t a, uint8_t *v);
-
-#endif
-

Marlin/src/HAL/shared/math_32bit.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef MATH_32BIT_H
-#define MATH_32BIT_H
 
 #include "../../core/macros.h"
 
@@ -31,5 +29,3 @@
 static FORCE_INLINE uint32_t MultiU32X24toH32(uint32_t longIn1, uint32_t longIn2) {
   return ((uint64_t)longIn1 * longIn2 + 0x00800000) >> 24;
 }
-
-#endif // MATH_32BIT_H

Marlin/src/HAL/shared/servo_private.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * servo_private.h - Interrupt driven Servo library for Arduino using 16 bit timers- Version 2
@@ -39,9 +40,6 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
-#ifndef SERVO_PRIVATE_H
-#define SERVO_PRIVATE_H
-
 #include <stdint.h>
 
 // Architecture specific include
@@ -98,5 +96,3 @@ extern ServoInfo_t servo_info[MAX_SERVOS];
 
 extern void initISR(timer16_Sequence_t timer);
 extern void finISR(timer16_Sequence_t timer);
-
-#endif // SERVO_PRIVATE_H

Marlin/src/Marlin.h

@@ -19,8 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-#ifndef __MARLIN_H__
+#pragma once
-#define __MARLIN_H__
 
 #include "inc/MarlinConfig.h"
 
@@ -242,5 +241,3 @@ void protected_pin_err();
 #if HAS_SUICIDE
   inline void suicide() { OUT_WRITE(SUICIDE_PIN, LOW); }
 #endif
-
-#endif // __MARLIN_H__

Marlin/src/core/boards.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef BOARDS_H
-#define BOARDS_H
 
 #define BOARD_UNKNOWN -1
 
@@ -247,5 +245,3 @@
 #define BOARD_ESP32            1900
 
 #define MB(board) (defined(BOARD_##board) && MOTHERBOARD==BOARD_##board)
-
-#endif // __BOARDS_H

Marlin/src/core/enum.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef __ENUM_H__
-#define __ENUM_H__
 
 /**
  * Axis indices as enumerated constants
@@ -68,5 +66,3 @@ typedef enum {
   TEMPUNIT_K,
   TEMPUNIT_F
 } TempUnit;
-
-#endif // __ENUM_H__

Marlin/src/core/serial.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef __SERIAL_H__
-#define __SERIAL_H__
 
 #include "../inc/MarlinConfigPre.h"
 #include HAL_PATH(../HAL, HAL.h)
@@ -246,5 +244,3 @@ void serial_error_start();
   void print_xyz(PGM_P prefix, PGM_P suffix, const float xyz[]);
   #define DEBUG_POS(SUFFIX,VAR) do { print_xyz(PSTR("  " STRINGIFY(VAR) "="), PSTR(" : " SUFFIX "\n"), VAR); } while(0)
 #endif
-
-#endif // __SERIAL_H__

Marlin/src/core/utility.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef __UTILITY_H__
-#define __UTILITY_H__
 
 #include "../inc/MarlinConfigPre.h"
 
@@ -102,5 +100,3 @@ void safe_delay(millis_t ms);
 #if ENABLED(DEBUG_LEVELING_FEATURE)
   void log_machine_info();
 #endif
-
-#endif // __UTILITY_H__

Marlin/src/feature/I2CPositionEncoder.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef I2CPOSENC_H
-#define I2CPOSENC_H
 
 #include "../inc/MarlinConfig.h"
 
@@ -331,5 +329,3 @@ class I2CPositionEncodersMgr {
 };
 
 extern I2CPositionEncodersMgr I2CPEM;
-
-#endif //I2CPOSENC_H

Marlin/src/feature/baricuda.h

@@ -19,11 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef __BARICUDA_H__
-#define __BARICUDA_H__
 
 extern uint8_t baricuda_valve_pressure,
                baricuda_e_to_p_pressure;
-
-#endif // __BARICUDA_H__

Marlin/src/feature/bedlevel/abl/abl.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef __ABL_H__
-#define __ABL_H__
 
 #include "../../../inc/MarlinConfig.h"
 
@@ -47,5 +45,3 @@
   #endif
 
 #endif // AUTO_BED_LEVELING_BILINEAR
-
-#endif // __ABL_H__

Marlin/src/feature/bedlevel/bedlevel.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef __BEDLEVEL_H__
-#define __BEDLEVEL_H__
 
 #include "../../inc/MarlinConfigPre.h"
 
@@ -85,5 +83,3 @@ void reset_bed_level();
 #elif HAS_ABL
   #include "abl/abl.h"
 #endif
-
-#endif // __BEDLEVEL_H__

Marlin/src/feature/bedlevel/mbl/mesh_bed_leveling.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef _MESH_BED_LEVELING_H_
-#define _MESH_BED_LEVELING_H_
 
 #include "../../../inc/MarlinConfig.h"
 
@@ -120,5 +118,3 @@ public:
 };
 
 extern mesh_bed_leveling mbl;
-
-#endif // _MESH_BED_LEVELING_H_

Marlin/src/feature/bedlevel/ubl/ubl.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef UNIFIED_BED_LEVELING_H
-#define UNIFIED_BED_LEVELING_H
 
 //#define UBL_DEVEL_DEBUGGING
 
@@ -372,5 +370,3 @@ class unified_bed_leveling {
 }; // class unified_bed_leveling
 
 extern unified_bed_leveling ubl;
-
-#endif // UNIFIED_BED_LEVELING_H

Marlin/src/feature/caselight.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef __CASELIGHT_H__
-#define __CASELIGHT_H__
 
 extern uint8_t case_light_brightness;
 extern bool case_light_on;
@@ -29,5 +27,3 @@ extern uint8_t case_light_brightness_sav;   // saves brighness info when case_li
 extern bool case_light_arg_flag;  // flag to notify if S or P argument type
 
 void update_case_light();
-
-#endif // __CASELIGHT_H__

Marlin/src/feature/controllerfan.h

@@ -19,10 +19,6 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef __CONTROLLERFAN_H__
-#define __CONTROLLERFAN_H__
 
 void controllerfan_update();
-
-#endif // __CONTROLLERFAN_H__

Marlin/src/feature/dac/dac_dac084s085.h

@@ -1,5 +1,25 @@
-#ifndef DAC084S085_H
+/**
-#define DAC084S085_H
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
 
 class dac084s085 {
   public:
@@ -9,5 +29,3 @@ class dac084s085 {
   private:
     static void cshigh();
 };
-
-#endif // DAC084S085_H

Marlin/src/feature/dac/dac_mcp4728.h

@@ -19,14 +19,12 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Arduino library for MicroChip MCP4728 I2C D/A converter.
  */
 
-#ifndef DAC_MCP4728_H
-#define DAC_MCP4728_H
-
 #include <Wire.h>
 
 #define defaultVDD     DAC_STEPPER_MAX //was 5000 but differs with internal Vref
@@ -57,5 +55,3 @@ uint8_t mcp4728_fastWrite();
 uint8_t mcp4728_simpleCommand(byte simpleCommand);
 uint8_t mcp4728_getDrvPct(uint8_t channel);
 void mcp4728_setDrvPct(uint8_t pct[XYZE]);
-
-#endif // DAC_MCP4728_H

Marlin/src/feature/dac/stepper_dac.h

@@ -19,31 +19,12 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * stepper_dac.h   - To set stepper current via DAC
- *
- * Part of Marlin
- *
- * Copyright (c) 2016 MarlinFirmware
- *
- * Marlin is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Marlin is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Marlin.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef STEPPER_DAC_H
-#define STEPPER_DAC_H
-
 #include "dac_mcp4728.h"
 
 int dac_init();
@@ -53,5 +34,3 @@ void dac_print_values();
 void dac_commit_eeprom();
 uint8_t dac_current_get_percent(AxisEnum axis);
 void dac_current_set_percents(const uint8_t pct[XYZE]);
-
-#endif // STEPPER_DAC_H

Marlin/src/feature/digipot/digipot.h

@@ -19,11 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef __DIGIPOT_H__
-#define __DIGIPOT_H__
 
 void digipot_i2c_set_current(const uint8_t channel, const float current);
 void digipot_i2c_init();
-
-#endif // __DIGIPOT_H__

Marlin/src/feature/fanmux.h

@@ -19,15 +19,11 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * feature/fanmux.h - Cooling Fan Multiplexer support functions
  */
 
-#ifndef _FANMUX_H_
-#define _FANMUX_H_
-
 extern void fanmux_switch(const uint8_t e);
 extern void fanmux_init(void);
-
-#endif // _FANMUX_H_

Marlin/src/feature/filwidth.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef __FILWIDTH_H__
-#define __FILWIDTH_H__
 
 #include "../inc/MarlinConfig.h"
 
@@ -31,5 +29,3 @@ extern float filament_width_nominal,                        // Nominal filament
 extern uint8_t meas_delay_cm;                               // Distance delay setting
 extern int8_t measurement_delay[MAX_MEASUREMENT_DELAY + 1], // Ring buffer to delayed measurement. Store extruder factor after subtracting 100
               filwidth_delay_index[2];                      // Indexes into ring buffer
-
-#endif // __FILWIDTH_H__

Marlin/src/feature/leds/blinkm.h

@@ -19,17 +19,13 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * blinkm.h - Control a BlinkM over i2c
  */
 
-#ifndef _BLINKM_H_
-#define _BLINKM_H_
-
 struct LEDColor;
 typedef LEDColor LEDColor;
 
 void blinkm_set_led_color(const LEDColor &color);
-
-#endif // _BLINKM_H_

Marlin/src/feature/leds/neopixel.h

@@ -19,14 +19,12 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Neopixel support
  */
 
-#ifndef __NEOPIXEL_H__
-#define __NEOPIXEL_H__
-
 #include "../../inc/MarlinConfig.h"
 
 #include <Adafruit_NeoPixel.h>
@@ -46,5 +44,3 @@ void set_neopixel_color(const uint32_t color);
 //bool neopixel_set_led_color(const uint8_t r, const uint8_t g, const uint8_t b, const uint8_t w, const uint8_t p);
 
 extern Adafruit_NeoPixel pixels;
-
-#endif // __NEOPIXEL_H__

Marlin/src/feature/leds/pca9632.h

@@ -19,18 +19,14 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Driver for the Philips PCA9632 LED driver.
  * Written by Robert Mendon Feb 2017.
  */
 
-#ifndef __PCA9632_H__
-#define __PCA9632_H__
-
 struct LEDColor;
 typedef LEDColor LEDColor;
 
 void pca9632_set_led_color(const LEDColor &color);
-
-#endif // __PCA9632_H__

Marlin/src/feature/leds/tempstat.h

@@ -19,14 +19,10 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Marlin general RGB LED support
  */
 
-#ifndef __TEMPSTAT_H__
-#define __TEMPSTAT_H__
-
 void handle_status_leds(void);
-
-#endif // __TEMPSTAT_H__

Marlin/src/feature/snmm.h

@@ -19,10 +19,6 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef __SNMM_H__
-#define __SNMM_H__
 
 void select_multiplexed_stepper(const uint8_t e);
-
-#endif // __SNMM_H__

Marlin/src/feature/solenoid.h

@@ -19,12 +19,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef __SOLENOID_H__
-#define __SOLENOID_H__
 
 void enable_solenoid_on_active_extruder();
 void disable_all_solenoids();
 void enable_solenoid(const uint8_t num);
-
-#endif // __SOLENOID_H__

Marlin/src/feature/tmc_util.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef _TMC_UTIL_H_
-#define _TMC_UTIL_H_
 
 #include "../inc/MarlinConfig.h"
 #if HAS_TRINAMIC
@@ -179,5 +177,3 @@ void monitor_tmc_driver();
 #if TMC_HAS_SPI
   void tmc_init_cs_pins();
 #endif
-
-#endif // _TMC_UTIL_H_

Marlin/src/feature/twibus.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef TWIBUS_H
-#define TWIBUS_H
 
 #include "../core/macros.h"
 
@@ -238,5 +236,3 @@ class TWIBus {
 
     #endif
 };
-
-#endif // TWIBUS_H

Marlin/src/gcode/gcode.h

@@ -251,9 +251,7 @@
  * T0-T3 - Select an extruder (tool) by index: "T<n> F<units/min>"
  *
  */
-
+#pragma once
-#ifndef _GCODE_H_
-#define _GCODE_H_
 
 #include "../inc/MarlinConfig.h"
 #include "parser.h"
@@ -829,5 +827,3 @@ private:
 };
 
 extern GcodeSuite gcode;
-
-#endif // _GCODE_H_

Marlin/src/gcode/queue.h

@@ -19,15 +19,13 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * queue.h - The G-code command queue, which holds commands before they
  *           go to the parser and dispatcher.
  */
 
-#ifndef GCODE_QUEUE_H
-#define GCODE_QUEUE_H
-
 #include "../inc/MarlinConfig.h"
 
 /**
@@ -125,5 +123,3 @@ void get_available_commands();
  * Get the next command in the queue, optionally log it to SD, then dispatch it
  */
 void advance_command_queue();
-
-#endif // GCODE_QUEUE_H

Marlin/src/inc/Conditionals_adv.h

@@ -19,15 +19,13 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Conditionals_adv.h
  * Defines that depend on advanced configuration.
  */
 
-#ifndef CONDITIONALS_ADV_H
-#define CONDITIONALS_ADV_H
-
 #if !defined(__AVR__) || !defined(USBCON)
   // Define constants and variables for buffering serial data.
   // Use only 0 or powers of 2 greater than 1
@@ -44,5 +42,3 @@
   // SERIAL_XON_XOFF not supported on USB-native devices
   #undef SERIAL_XON_XOFF
 #endif
-
-#endif // CONDITIONALS_ADV_H

Marlin/src/inc/Conditionals_post.h

@@ -19,15 +19,13 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Conditionals_post.h
  * Defines that depend on configuration but are not editable.
  */
 
-#ifndef CONDITIONALS_POST_H
-#define CONDITIONALS_POST_H
-
 #define AVR_ATmega2560_FAMILY_PLUS_70 ( \
      MB(BQ_ZUM_MEGA_3D)                 \
   || MB(MIGHTYBOARD_REVE)               \
@@ -1637,5 +1635,3 @@
 #else
   #define Z_STEPPER_COUNT 1
 #endif
-
-#endif // CONDITIONALS_POST_H

Marlin/src/lcd/language/language_an.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Aragonese
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_AN_H
-#define LANGUAGE_AN_H
 
 #define DISPLAY_CHARSET_ISO10646_1
 #define NOT_EXTENDED_ISO10646_1_5X7
@@ -256,5 +255,3 @@
 #define MSG_FILAMENT_CHANGE_LOAD_2          _UxGT("cargar filamento")
 #define MSG_FILAMENT_CHANGE_RESUME_1        _UxGT("Aguardando impre.")
 #define MSG_FILAMENT_CHANGE_RESUME_2        _UxGT("pa continar")
-
-#endif // LANGUAGE_AN_H

Marlin/src/lcd/language/language_bg.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Bulgarian
@@ -27,9 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_BG_H
-#define LANGUAGE_BG_H
-
 #define DISPLAY_CHARSET_ISO10646_5
 #define CHARSIZE 2
 
@@ -146,5 +144,3 @@
 #define MSG_DELTA_CALIBRATE_Y               _UxGT("Калибровка Y")
 #define MSG_DELTA_CALIBRATE_Z               _UxGT("Калибровка Z")
 #define MSG_DELTA_CALIBRATE_CENTER          _UxGT("Калибровка Център")
-
-#endif // LANGUAGE_BG_H

Marlin/src/lcd/language/language_ca.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Catalan
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_CA_H
-#define LANGUAGE_CA_H
 
 #define CHARSIZE 2
 
@@ -261,5 +260,3 @@
   #define MSG_FILAMENT_CHANGE_LOAD_1          _UxGT("Carregant...")
   #define MSG_FILAMENT_CHANGE_RESUME_1        _UxGT("Reprenent...")
 #endif // LCD_HEIGHT < 4
-
-#endif // LANGUAGE_CA_H

Marlin/src/lcd/language/language_cz.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Czech
@@ -32,8 +33,6 @@
  * http://www.zahradniksebavi.cz
  *
  */
-#ifndef LANGUAGE_CZ_UTF_H
-#define LANGUAGE_CZ_UTF_H
 
 #define DISPLAY_CHARSET_ISO10646_CZ
 #define CHARSIZE 2
@@ -406,5 +405,3 @@
   #define MSG_FILAMENT_CHANGE_PURGE_1         _UxGT("Vytlačování...")
   #define MSG_FILAMENT_CHANGE_RESUME_1        _UxGT("Pokračování...")
 #endif // LCD_HEIGHT < 4
-
-#endif // LANGUAGE_CZ_UTF_H

Marlin/src/lcd/language/language_da.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Danish
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_DA_H
-#define LANGUAGE_DA_H
 
 #define DISPLAY_CHARSET_ISO10646_1
 #define CHARSIZE 2
@@ -250,5 +249,3 @@
   #define MSG_FILAMENT_CHANGE_LOAD_1          _UxGT("Indtager...")
   #define MSG_FILAMENT_CHANGE_RESUME_1        _UxGT("Fortsætter...")
 #endif // LCD_HEIGHT < 4
-
-#endif // LANGUAGE_DA_H

Marlin/src/lcd/language/language_de.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * German
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_DE_H
-#define LANGUAGE_DE_H
 
 #define CHARSIZE 2
 
@@ -427,5 +426,3 @@
   #define MSG_FILAMENT_CHANGE_PURGE_1         _UxGT("Entleeren...")
   #define MSG_FILAMENT_CHANGE_RESUME_1        _UxGT("Fortsetzen...")
 #endif // LCD_HEIGHT < 4
-
-#endif // LANGUAGE_DE_H

Marlin/src/lcd/language/language_el-gr.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Greek (Greece)
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_EL_GR_H
-#define LANGUAGE_EL_GR_H
 
 #define DISPLAY_CHARSET_ISO10646_GREEK
 #define CHARSIZE 2
@@ -186,5 +185,3 @@
 #define MSG_DELTA_CALIBRATE_Y               _UxGT("Βαθμονόμηση Y")
 #define MSG_DELTA_CALIBRATE_Z               _UxGT("Βαθμονόμηση Z")
 #define MSG_DELTA_CALIBRATE_CENTER          _UxGT("Βαθμονόμηση κέντρου")
-
-#endif // LANGUAGE_EL_GR_H

Marlin/src/lcd/language/language_el.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Greek
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_EL_H
-#define LANGUAGE_EL_H
 
 #define DISPLAY_CHARSET_ISO10646_GREEK
 #define CHARSIZE 2
@@ -187,5 +186,3 @@
 #define MSG_DELTA_CALIBRATE_Y               _UxGT("Βαθμονόμηση Y")
 #define MSG_DELTA_CALIBRATE_Z               _UxGT("Βαθμονόμηση Z")
 #define MSG_DELTA_CALIBRATE_CENTER          _UxGT("Βαθμονόμηση κέντρου")
-
-#endif // LANGUAGE_EL_H

Marlin/src/lcd/language/language_en.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * English
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_EN_H
-#define LANGUAGE_EN_H
 
 #define en 1234
 #if LCD_LANGUAGE == en
@@ -1149,5 +1148,3 @@
     #define MSG_FILAMENT_CHANGE_RESUME_1        _UxGT("Resuming...")
   #endif
 #endif // LCD_HEIGHT < 4
-
-#endif // LANGUAGE_EN_H

Marlin/src/lcd/language/language_es.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Spanish
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_ES_UTF_H
-#define LANGUAGE_ES_UTF_H
 
 #define DISPLAY_CHARSET_ISO10646_1
 #define CHARSIZE 2
@@ -262,5 +261,3 @@
 #define MSG_FILAMENT_CHANGE_HEAT_2          _UxGT("Calentar la boquilla")
 #define MSG_FILAMENT_CHANGE_HEATING_1       _UxGT("Calentando boquilla")
 #define MSG_FILAMENT_CHANGE_HEATING_2       _UxGT("Espere por favor")
-
-#endif // LANGUAGE_ES_UTF_H

Marlin/src/lcd/language/language_eu.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Basque-Euskera
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_EU_H
-#define LANGUAGE_EU_H
 
 #define DISPLAY_CHARSET_ISO10646_1
 #define NOT_EXTENDED_ISO10646_1_5X7
@@ -387,5 +386,3 @@
   //#define MSG_FILAMENT_CHANGE_PURGE_1       _UxGT("Purging...")
   //#define MSG_FILAMENT_CHANGE_RESUME_1      _UxGT("Resuming...")
 #endif // LCD_HEIGHT < 4
-
-#endif // LANGUAGE_EU_H

Marlin/src/lcd/language/language_fi.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Finnish
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_FI_H
-#define LANGUAGE_FI_H
 
 #define DISPLAY_CHARSET_ISO10646_1
 #define CHARSIZE 2
@@ -169,5 +168,3 @@
 #define MSG_DELTA_CALIBRATE_Y               _UxGT("Kalibroi Y")
 #define MSG_DELTA_CALIBRATE_Z               _UxGT("Kalibroi Z")
 #define MSG_DELTA_CALIBRATE_CENTER          _UxGT("Kalibroi Center")
-
-#endif // LANGUAGE_FI_H

Marlin/src/lcd/language/language_fr.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * French
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_FR_UTF_H
-#define LANGUAGE_FR_UTF_H
 
 #define DISPLAY_CHARSET_ISO10646_1
 #define CHARSIZE 2
@@ -392,5 +391,3 @@
   #define MSG_FILAMENT_CHANGE_LOAD_1        _UxGT("Chargement...")
   #define MSG_FILAMENT_CHANGE_RESUME_1      _UxGT("Reprise...")
 #endif // LCD_HEIGHT < 4
-
-#endif // LANGUAGE_FR_UTF_H

Marlin/src/lcd/language/language_gl.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Galician language (ISO "gl")
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_GL_H
-#define LANGUAGE_GL_H
 
 #define DISPLAY_CHARSET_ISO10646_1
 #define NOT_EXTENDED_ISO10646_1_5X7
@@ -251,5 +250,3 @@
   #define MSG_FILAMENT_CHANGE_LOAD_1          _UxGT("Cargando...")
   #define MSG_FILAMENT_CHANGE_RESUME_1        _UxGT("Seguindo...")
 #endif // LCD_HEIGHT < 4
-
-#endif // LANGUAGE_GL_H

Marlin/src/lcd/language/language_hr.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Croatian (Hrvatski)
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_HR_H
-#define LANGUAGE_HR_H
 
 #define DISPLAY_CHARSET_ISO10646_1 // use the better font on full graphic displays.
 #define CHARSIZE 2
@@ -250,5 +249,3 @@
   #define MSG_FILAMENT_CHANGE_LOAD_1          _UxGT("Loading...")
   #define MSG_FILAMENT_CHANGE_RESUME_1        _UxGT("Nastavljam...")
 #endif // LCD_HEIGHT < 4
-
-#endif // LANGUAGE_HR_H

Marlin/src/lcd/language/language_it.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Italian
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_IT_H
-#define LANGUAGE_IT_H
 
 #define DISPLAY_CHARSET_ISO10646_1
 
@@ -423,5 +422,3 @@
   #define MSG_FILAMENT_CHANGE_PURGE_1       _UxGT("Spurgo filamento")
   #define MSG_FILAMENT_CHANGE_RESUME_1      _UxGT("Ripresa...")
 #endif // LCD_HEIGHT < 4
-
-#endif // LANGUAGE_IT_H

Marlin/src/lcd/language/language_jp-kana.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Japanese (Kana)
@@ -29,9 +30,6 @@
  *
  */
 
-#ifndef LANGUAGE_KANA_UTF_H
-#define LANGUAGE_KANA_UTF_H
-
 #define DISPLAY_CHARSET_ISO10646_KANA
 #define CHARSIZE 3
 
@@ -221,5 +219,3 @@
 #define MSG_FILAMENT_CHANGE_LOAD_2          _UxGT("シバラクオマチクダサイ")            // "filament load"
 #define MSG_FILAMENT_CHANGE_RESUME_1        _UxGT("プリントヲサイカイシマス")           // "Wait for print"
 #define MSG_FILAMENT_CHANGE_RESUME_2        _UxGT("シバラクオマチクダサイ")            // "to resume"
-
-#endif // LANGUAGE_KANA_UTF_H

Marlin/src/lcd/language/language_ko_KR.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Korean
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_KO_KR_H
-#define LANGUAGE_KO_KR_H
 
 #define CHARSIZE 1
 
@@ -412,5 +411,3 @@
   #define MSG_FILAMENT_CHANGE_PURGE_1         _UxGT("Purging...")
   #define MSG_FILAMENT_CHANGE_RESUME_1        _UxGT("Resuming...")
 #endif // LCD_HEIGHT < 4
-
-#endif // LANGUAGE_KO_KR_H

Marlin/src/lcd/language/language_nl.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Dutch
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_NL_H
-#define LANGUAGE_NL_H
 
 #define DISPLAY_CHARSET_ISO10646_1
 #define NOT_EXTENDED_ISO10646_1_5X7
@@ -281,5 +280,3 @@
   #define MSG_FILAMENT_CHANGE_RESUME_1        _UxGT("Wacht voor")
   #define MSG_FILAMENT_CHANGE_RESUME_2        _UxGT("printing...")
 #endif // LCD_HEIGHT < 4
-
-#endif // LANGUAGE_NL_H

Marlin/src/lcd/language/language_pl.h

@@ -19,14 +19,12 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Polish for DOGM display - includes accented characters
  */
 
-#ifndef LANGUAGE_PL_DOGM_H
-#define LANGUAGE_PL_DOGM_H
-
 #define DISPLAY_CHARSET_ISO10646_PL
 
 #define CHARSIZE 2
@@ -253,5 +251,3 @@
   #define MSG_FILAMENT_CHANGE_LOAD_1          _UxGT("Ładowanie...")
   #define MSG_FILAMENT_CHANGE_RESUME_1        _UxGT("Wznowienie...")
 #endif // LCD_HEIGHT < 4
-
-#endif  // LANGUAGE_PL_DOGM_H

Marlin/src/lcd/language/language_pt-br.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Portuguese (Brazil)
@@ -28,8 +29,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_PT_BR_UTF_H
-#define LANGUAGE_PT_BR_UTF_H
 
 // Put characters here that should be displayed with M117
 //_UxGT("áãàçÉéêíóõ")
@@ -382,5 +381,3 @@
   #define MSG_FILAMENT_CHANGE_EXTRUDE_1     _UxGT("Extrusando...")
   #define MSG_FILAMENT_CHANGE_RESUME_1      _UxGT("Continuando...")
 #endif
-
-#endif // LANGUAGE_PT_BR_UTF_H

Marlin/src/lcd/language/language_pt.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Portuguese
@@ -28,8 +29,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_PT_UTF_H
-#define LANGUAGE_PT_UTF_H
 
 #define DISPLAY_CHARSET_ISO10646_1
 #define CHARSIZE 2
@@ -186,5 +185,3 @@
 #define MSG_DELTA_CALIBRATE_CENTER          _UxGT("Calibrar Centro")
 
 #define MSG_LCD_ENDSTOPS                    _UxGT("Fim de curso")
-
-#endif // LANGUAGE_PT_UTF_H

Marlin/src/lcd/language/language_ru.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Russian
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_RU_H
-#define LANGUAGE_RU_H
 
 #define DISPLAY_CHARSET_ISO10646_5
 #define CHARSIZE 2
@@ -399,5 +398,3 @@
   #define MSG_FILAMENT_CHANGE_PURGE_1       _UxGT("Выдавливание...")
   #define MSG_FILAMENT_CHANGE_RESUME_1      _UxGT("Возобновление...")
 #endif // LCD_HEIGHT < 4
-
-#endif // LANGUAGE_RU_H

Marlin/src/lcd/language/language_sk.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Slovak
@@ -31,8 +32,6 @@
  * http://www.facebook.com/farmamam
  *
  */
-#ifndef LANGUAGE_SK_UTF_H
-#define LANGUAGE_SK_UTF_H
 
 // Put characters here that should be displayed with M117
 //_UxGT("aäAÄaáAÁeéEÉiíIÍlĺLĹ")
@@ -437,5 +436,3 @@
   #define MSG_FILAMENT_CHANGE_PURGE_1         _UxGT("Vytlačovanie...")
   #define MSG_FILAMENT_CHANGE_RESUME_1        _UxGT("Pokračovanie...")
 #endif // LCD_HEIGHT < 4
-
-#endif // LANGUAGE_SK_UTF_H

Marlin/src/lcd/language/language_test.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * TEST
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_TEST_H
-#define LANGUAGE_TEST_H
 
 // Select ONE of the following Mappers.
 // They decide what to do with a symbol in the area of [0x80:0xFF]. They take a symbol of this language file and make them point
@@ -226,5 +225,3 @@
   #define MSG_PID_P                           STRG_OKTAL_e
   #define MSG_PID_I                           STRG_OKTAL_f
 #endif
-
-#endif // LANGUAGE_TEST_H

Marlin/src/lcd/language/language_tr.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Turkish
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_TR_H
-#define LANGUAGE_TR_H
 
 #define DISPLAY_CHARSET_ISO10646_TR
 #define CHARSIZE 2
@@ -266,5 +265,3 @@
   #define MSG_FILAMENT_CHANGE_LOAD_1          _UxGT("Yüklüyor...")                                      // Yüklüyor...
   #define MSG_FILAMENT_CHANGE_RESUME_1        _UxGT("Sürdürülüyor...")                                  // Sürdürülüyor...
 #endif // LCD_HEIGHT < 4
-
-#endif // LANGUAGE_TR_H

Marlin/src/lcd/language/language_uk.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Ukrainian
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_UK_H
-#define LANGUAGE_UK_H
 
 #define DISPLAY_CHARSET_ISO10646_5
 #define CHARSIZE 2
@@ -240,5 +239,3 @@
   #define MSG_FILAMENT_CHANGE_LOAD_1          _UxGT("Ввід...")
   #define MSG_FILAMENT_CHANGE_RESUME_1        _UxGT("Відновлення...")
 #endif // LCD_HEIGHT < 4
-
-#endif // LANGUAGE_UK_H

Marlin/src/lcd/language/language_zh_CN.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Simplified Chinese
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_ZH_CN_H
-#define LANGUAGE_ZH_CN_H
 
 #define CHARSIZE 3
 
@@ -384,5 +383,3 @@
   #define MSG_FILAMENT_CHANGE_PURGE_1       _UxGT("清除中 ...") // "Purging..."
   #define MSG_FILAMENT_CHANGE_RESUME_1      _UxGT("恢复中 ...")  //"Resuming..."
 #endif // LCD_HEIGHT < 4
-
-#endif // LANGUAGE_ZH_CN_H

Marlin/src/lcd/language/language_zh_TW.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Traditional Chinese
@@ -27,8 +28,6 @@
  * See also http://marlinfw.org/docs/development/lcd_language.html
  *
  */
-#ifndef LANGUAGE_ZH_TW_H
-#define LANGUAGE_ZH_TW_H
 
 #define CHARSIZE 3
 
@@ -384,5 +383,3 @@
   #define MSG_FILAMENT_CHANGE_PURGE_1       _UxGT("清除中 ...") // "Purging..."
   #define MSG_FILAMENT_CHANGE_RESUME_1      _UxGT("恢復中 ...")  //"Resuming..."
 #endif // LCD_HEIGHT < 4
-
-#endif // LANGUAGE_ZH_TW_H

Marlin/src/libs/buzzer.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef __BUZZER_H__
-#define __BUZZER_H__
 
 #include "../inc/MarlinConfig.h"
 
@@ -123,5 +121,3 @@ class Buzzer {
   #define BUZZ(d,f) NOOP
 
 #endif
-
-#endif

Marlin/src/libs/circularqueue.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef __CIRCULARQUEUE_H__
-#define __CIRCULARQUEUE_H__
 
 #include <stdint.h>
 
@@ -141,5 +139,3 @@ class CircularQueue {
       return this->buffer.count;
     }
 };
-
-#endif

Marlin/src/libs/hex_print_routines.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef HEX_PRINT_ROUTINES_H
-#define HEX_PRINT_ROUTINES_H
 
 #include <stdint.h>
 
@@ -46,5 +44,3 @@ void print_hex_address(const void * const w);
 #else
   typedef uint16_t ptr_int_t;
 #endif
-
-#endif // HEX_PRINT_ROUTINES_H

Marlin/src/libs/least_squares_fit.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Incremental Least Squares Best Fit  By Roxy and Ed Williams
@@ -32,9 +33,6 @@
  *
  */
 
-#ifndef _LEAST_SQUARES_FIT_H_
-#define _LEAST_SQUARES_FIT_H_
-
 #include "../inc/MarlinConfig.h"
 #include <math.h>
 
@@ -83,5 +81,3 @@ void inline incremental_LSF(struct linear_fit_data *lsf, const float &x, const f
 }
 
 int finish_incremental_LSF(struct linear_fit_data *);
-
-#endif // _LEAST_SQUARES_FIT_H_

Marlin/src/libs/nozzle.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef __NOZZLE_H__
-#define __NOZZLE_H__
 
 #include "../inc/MarlinConfig.h"
 #include "point_t.h"
@@ -90,5 +88,3 @@ class Nozzle {
 
   #endif
 };
-
-#endif // __NOZZLE_H__

Marlin/src/libs/private_spi.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef __PRIVATE_SPI_H__
-#define __PRIVATE_SPI_H__
 
 #include "softspi.h"
 #include <stdint.h>
@@ -53,5 +51,3 @@ class SPIclass<MISO_PIN, MOSI_PIN, SCK_PIN> {
     }
 
 };
-
-#endif // __PRIVATE_SPI_H__

Marlin/src/libs/stopwatch.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef STOPWATCH_H
-#define STOPWATCH_H
 
 // Print debug messages with M111 S2 (Uses 156 bytes of PROGMEM)
 //#define DEBUG_STOPWATCH
@@ -116,5 +114,3 @@ class Stopwatch {
 
     #endif
 };
-
-#endif // STOPWATCH_H

Marlin/src/module/configuration_store.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef CONFIGURATION_STORE_H
-#define CONFIGURATION_STORE_H
 
 #include "../inc/MarlinConfig.h"
 
@@ -120,5 +118,3 @@ extern MarlinSettings settings;
 
 #undef PORTINIT_SOLO
 #undef PORTINIT_AFTER
-
-#endif // CONFIGURATION_STORE_H

Marlin/src/module/endstops.h

@@ -19,14 +19,12 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * endstops.h - manages endstops
  */
 
-#ifndef __ENDSTOPS_H__
-#define __ENDSTOPS_H__
-
 #include "../inc/MarlinConfig.h"
 #include <stdint.h>
 
@@ -173,5 +171,3 @@ class Endstops {
 };
 
 extern Endstops endstops;
-
-#endif // __ENDSTOPS_H__

Marlin/src/module/planner_bezier.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * planner_bezier.h
@@ -27,10 +28,8 @@
  *
  */
 
-#ifndef PLANNER_BEZIER_H
+#include <stdint.h>
-#define PLANNER_BEZIER_H
+#include "../core/macros.h"
-
-#include "../inc/MarlinConfig.h"
 
 void cubic_b_spline(
               const float position[NUM_AXIS], // current position
@@ -39,5 +38,3 @@ void cubic_b_spline(
               float fr_mm_s,
               uint8_t extruder
             );
-
-#endif // PLANNER_BEZIER_H

Marlin/src/module/printcounter.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef PRINTCOUNTER_H
-#define PRINTCOUNTER_H
 
 #include "../libs/stopwatch.h"
 #include "../libs/duration_t.h"
@@ -193,5 +191,3 @@ class PrintCounter: public Stopwatch {
 #else
   extern Stopwatch print_job_timer;
 #endif
-
-#endif // PRINTCOUNTER_H

Marlin/src/module/probe.h

@@ -19,14 +19,12 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * probe.h - Move, deploy, enable, etc.
  */
 
-#ifndef PROBE_H
-#define PROBE_H
-
 #include "../inc/MarlinConfig.h"
 
 #if HAS_BED_PROBE
@@ -73,5 +71,3 @@
     set_bltouch_deployed(false);
   }
 #endif
-
-#endif // PROBE_H

Marlin/src/module/servo.h

@@ -19,14 +19,12 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * module/servo.h
  */
 
-#ifndef _SERVO_H_
-#define _SERVO_H_
-
 #include "../inc/MarlinConfig.h"
 #include "../HAL/shared/servo.h"
 
@@ -40,5 +38,3 @@ extern void servo_init();
   #define DEPLOY_Z_SERVO() MOVE_SERVO(Z_PROBE_SERVO_NR, servo_angles[Z_PROBE_SERVO_NR][0])
   #define STOW_Z_SERVO() MOVE_SERVO(Z_PROBE_SERVO_NR, servo_angles[Z_PROBE_SERVO_NR][1])
 #endif
-
-#endif // _SERVO_H_

Marlin/src/module/speed_lookuptable.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef SPEED_LOOKUPTABLE_H
-#define SPEED_LOOKUPTABLE_H
 
 #if F_CPU == 16000000
 
@@ -168,5 +166,3 @@
   };
 
 #endif
-
-#endif // SPEED_LOOKUPTABLE_H

Marlin/src/module/stepper.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * stepper.h - stepper motor driver: executes motion plans of planner.c using the stepper motors
@@ -40,9 +41,6 @@
  * along with Grbl.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef STEPPER_H
-#define STEPPER_H
-
 #include "../inc/MarlinConfig.h"
 
 // Disable multiple steps per ISR
@@ -559,5 +557,3 @@ class Stepper {
 };
 
 extern Stepper stepper;
-
-#endif // STEPPER_H

Marlin/src/module/stepper_indirection.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * stepper_indirection.h - stepper motor driver indirection macros
@@ -41,9 +42,6 @@
  * along with Marlin.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef STEPPER_INDIRECTION_H
-#define STEPPER_INDIRECTION_H
-
 #include "../inc/MarlinConfig.h"
 
 // TMC26X drivers have STEP/DIR on normal pins, but ENABLE via SPI
@@ -615,5 +613,3 @@ void reset_stepper_drivers();    // Called by settings.load / settings.reset
   #define   NORM_E_DIR(E)   E0_DIR_WRITE(!INVERT_E0_DIR)
   #define    REV_E_DIR(E)   E0_DIR_WRITE( INVERT_E0_DIR)
 #endif
-
-#endif // STEPPER_INDIRECTION_H

Marlin/src/module/temperature.h

@@ -19,14 +19,12 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * temperature.h - temperature controller
  */
 
-#ifndef TEMPERATURE_H
-#define TEMPERATURE_H
-
 #include "thermistor/thermistors.h"
 #include "../inc/MarlinConfig.h"
 
@@ -660,5 +658,3 @@ class Temperature {
 };
 
 extern Temperature thermalManager;
-
-#endif // TEMPERATURE_H

Marlin/src/module/thermistor/thermistor_1010.h

@@ -22,17 +22,17 @@
 
 // Pt1000 with 1k0 pullup
 const short temptable_1010[][2] PROGMEM = {
-  PtLine(  0, 1000, 1000)
+  PtLine(  0, 1000, 1000),
-  PtLine( 25, 1000, 1000)
+  PtLine( 25, 1000, 1000),
-  PtLine( 50, 1000, 1000)
+  PtLine( 50, 1000, 1000),
-  PtLine( 75, 1000, 1000)
+  PtLine( 75, 1000, 1000),
-  PtLine(100, 1000, 1000)
+  PtLine(100, 1000, 1000),
-  PtLine(125, 1000, 1000)
+  PtLine(125, 1000, 1000),
-  PtLine(150, 1000, 1000)
+  PtLine(150, 1000, 1000),
-  PtLine(175, 1000, 1000)
+  PtLine(175, 1000, 1000),
-  PtLine(200, 1000, 1000)
+  PtLine(200, 1000, 1000),
-  PtLine(225, 1000, 1000)
+  PtLine(225, 1000, 1000),
-  PtLine(250, 1000, 1000)
+  PtLine(250, 1000, 1000),
-  PtLine(275, 1000, 1000)
+  PtLine(275, 1000, 1000),
   PtLine(300, 1000, 1000)
 };

Marlin/src/module/thermistor/thermistor_1047.h

@@ -23,11 +23,11 @@
 // Pt1000 with 4k7 pullup
 const short temptable_1047[][2] PROGMEM = {
   // only a few values are needed as the curve is very flat
-  PtLine(  0, 1000, 4700)
+  PtLine(  0, 1000, 4700),
-  PtLine( 50, 1000, 4700)
+  PtLine( 50, 1000, 4700),
-  PtLine(100, 1000, 4700)
+  PtLine(100, 1000, 4700),
-  PtLine(150, 1000, 4700)
+  PtLine(150, 1000, 4700),
-  PtLine(200, 1000, 4700)
+  PtLine(200, 1000, 4700),
-  PtLine(250, 1000, 4700)
+  PtLine(250, 1000, 4700),
   PtLine(300, 1000, 4700)
 };

Marlin/src/module/thermistor/thermistor_110.h

@@ -23,11 +23,11 @@
 // Pt100 with 1k0 pullup
 const short temptable_110[][2] PROGMEM = {
   // only a few values are needed as the curve is very flat
-  PtLine(  0, 100, 1000)
+  PtLine(  0, 100, 1000),
-  PtLine( 50, 100, 1000)
+  PtLine( 50, 100, 1000),
-  PtLine(100, 100, 1000)
+  PtLine(100, 100, 1000),
-  PtLine(150, 100, 1000)
+  PtLine(150, 100, 1000),
-  PtLine(200, 100, 1000)
+  PtLine(200, 100, 1000),
-  PtLine(250, 100, 1000)
+  PtLine(250, 100, 1000),
   PtLine(300, 100, 1000)
 };

Marlin/src/module/thermistor/thermistor_147.h

@@ -23,11 +23,11 @@
 // Pt100 with 4k7 pullup
 const short temptable_147[][2] PROGMEM = {
   // only a few values are needed as the curve is very flat
-  PtLine(  0, 100, 4700)
+  PtLine(  0, 100, 4700),
-  PtLine( 50, 100, 4700)
+  PtLine( 50, 100, 4700),
-  PtLine(100, 100, 4700)
+  PtLine(100, 100, 4700),
-  PtLine(150, 100, 4700)
+  PtLine(150, 100, 4700),
-  PtLine(200, 100, 4700)
+  PtLine(200, 100, 4700),
-  PtLine(250, 100, 4700)
+  PtLine(250, 100, 4700),
   PtLine(300, 100, 4700)
 };

Marlin/src/module/thermistor/thermistors.h

@@ -19,9 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
+#pragma once
-#ifndef THERMISTORS_H_
-#define THERMISTORS_H_
 
 #include "../../inc/MarlinConfig.h"
 
@@ -38,7 +36,7 @@
 #define PtB -5.775E-7
 #define PtRt(T,R0) ((R0) * (1.0 + (PtA) * (T) + (PtB) * (T) * (T)))
 #define PtAdVal(T,R0,Rup) (short)(1024 / (Rup / PtRt(T, R0) + 1))
-#define PtLine(T,R0,Rup) { OV(PtAdVal(T,R0,Rup)), T },
+#define PtLine(T,R0,Rup) { OV(PtAdVal(T, R0, Rup)), T }
 
 #if ANY_THERMISTOR_IS(1) // beta25 = 4092 K, R25 = 100 kOhm, Pull-up = 4.7 kOhm, "EPCOS"
   #include "thermistor_1.h"
@@ -276,5 +274,3 @@ static_assert(HEATER_0_TEMPTABLE_LEN < 256 && HEATER_1_TEMPTABLE_LEN < 256 && HE
     #define HEATER_CHAMBER_RAW_LO_TEMP 0
   #endif
 #endif
-
-#endif // THERMISTORS_H_

Marlin/src/sd/Sd2Card.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * \file
@@ -31,8 +32,6 @@
  *
  * This file is part of the Arduino Sd2Card Library
  */
-#ifndef _SD2CARD_H_
-#define _SD2CARD_H_
 
 #include "SdFatConfig.h"
 #include "SdInfo.h"
@@ -202,5 +201,3 @@ class Sd2Card {
   bool waitNotBusy(const millis_t timeout_ms);
   bool writeData(uint8_t token, const uint8_t* src);
 };
-
-#endif  // _SD2CARD_H_

Marlin/src/sd/SdBaseFile.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * \file
@@ -31,9 +32,6 @@
  *
  * This file is part of the Arduino Sd2Card Library
  */
-#ifndef _SDBASEFILE_H_
-#define _SDBASEFILE_H_
-
 
 #include "SdFatConfig.h"
 #include "SdVolume.h"
@@ -387,5 +385,3 @@ class SdBaseFile {
   bool openCachedEntry(uint8_t cacheIndex, uint8_t oflags);
   dir_t* readDirCache();
 };
-
-#endif // _SDBASEFILE_H_

Marlin/src/sd/SdFatConfig.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * SdFatConfig.h
@@ -28,12 +29,8 @@
  * This file is part of the Arduino Sd2Card Library
  */
 
-#ifndef _SDFATCONFIG_H_
-#define _SDFATCONFIG_H_
-
 #include "../inc/MarlinConfig.h"
 
-
 /**
  * To use multiple SD cards set USE_MULTIPLE_CARDS nonzero.
  *
@@ -113,5 +110,3 @@
 
 // Total bytes needed to store a single long filename
 #define LONG_FILENAME_LENGTH (FILENAME_LENGTH * MAX_VFAT_ENTRIES + 1)
-
-#endif // _SDFATCONFIG_H_

Marlin/src/sd/SdFatStructs.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * \file
@@ -31,8 +32,6 @@
  *
  * This file is part of the Arduino Sd2Card Library
  */
-#ifndef SDFATSTRUCTS_H
-#define SDFATSTRUCTS_H
 
 #include <stdint.h>
 
@@ -613,5 +612,3 @@ static inline uint8_t DIR_IS_SUBDIR(const dir_t* dir) {
 static inline uint8_t DIR_IS_FILE_OR_SUBDIR(const dir_t* dir) {
   return (dir->attributes & DIR_ATT_VOLUME_ID) == 0;
 }
-
-#endif // SDFATSTRUCTS_H

Marlin/src/sd/SdFatUtil.cpp

@@ -32,6 +32,7 @@
 #if ENABLED(SDSUPPORT)
 
 #include "SdFatUtil.h"
+#include <string.h>
 
 /**
  * Amount of free RAM

Marlin/src/sd/SdFatUtil.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Arduino SdFat Library
@@ -26,10 +27,6 @@
  *
  * This file is part of the Arduino Sd2Card Library
  */
-#ifndef _SDFATUTIL_H_
-#define _SDFATUTIL_H_
-
-#include <string.h>
 
 /**
  * \file
@@ -41,5 +38,3 @@ namespace SdFatUtil {
 }
 
 using namespace SdFatUtil;  // NOLINT
-
-#endif // _SDFATUTIL_H_

Marlin/src/sd/SdFile.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * \file
@@ -31,8 +32,6 @@
  *
  * This file is part of the Arduino Sd2Card Library
  */
-#ifndef _SDFILE_H_
-#define _SDFILE_H_
 
 #include "SdBaseFile.h"
 
@@ -58,5 +57,3 @@ class SdFile : public SdBaseFile/*, public Print*/ {
   void write_P(PGM_P str);
   void writeln_P(PGM_P str);
 };
-
-#endif // _SDFILE_H_

Marlin/src/sd/SdInfo.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * Arduino Sd2Card Library
@@ -26,8 +27,6 @@
  *
  * This file is part of the Arduino Sd2Card Library
  */
-#ifndef _SDINFO_H_
-#define _SDINFO_H_
 
 #include <stdint.h>
 
@@ -264,5 +263,3 @@ union csd_t {
   csd1_t v1;
   csd2_t v2;
 };
-
-#endif // _SDINFO_H_

Marlin/src/sd/SdVolume.h

@@ -19,6 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * \file
@@ -31,8 +32,6 @@
  *
  * This file is part of the Arduino Sd2Card Library
  */
-#ifndef _SDVOLUME_H_
-#define _SDVOLUME_H_
 
 #if ENABLED(USB_FLASH_DRIVE_SUPPORT)
   #include "usb_flashdrive/Sd2Card_FlashDrive.h"
@@ -195,5 +194,3 @@ class SdVolume {
   bool readBlock(uint32_t block, uint8_t* dst) { return sdCard_->readBlock(block, dst); }
   bool writeBlock(uint32_t block, const uint8_t* dst) { return sdCard_->writeBlock(block, dst); }
 };
-
-#endif // _SDVOLUME_H_

Marlin/src/sd/usb_flashdrive/Sd2Card_FlashDrive.h

@@ -19,15 +19,13 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * \file
  * \brief Sd2Card class for V2 SD/SDHC cards
  */
 
-#ifndef _SD2CARD_FLASHDRIVE_H_
-#define _SD2CARD_FLASHDRIVE_H_
-
 /* Uncomment USB_DEBUG to enable debugging.
  *    1 - basic debugging and bounds checking
  *    2 - print each block access
@@ -99,5 +97,3 @@ class Sd2Card {
     uint32_t cardSize();
     static bool isInserted();
 };
-
-#endif  // _SD2CARD_FLASHDRIVE_H_

Marlin/src/sd/usb_flashdrive/lib/UsbCore.h

@@ -26,8 +26,7 @@ e-mail   :  support@circuitsathome.com
   #error "Never include UsbCore.h directly; include Usb.h instead"
 #endif
 
-#ifndef USBCORE_H
+#pragma once
-#define USBCORE_H
 
 // Not used anymore? If anyone uses this, please let us know so that this may be
 // moved to the proper place, settings.h.
@@ -310,5 +309,3 @@ inline uint8_t USB::setConf(uint8_t addr, uint8_t ep, uint8_t conf_value) {
 }
 
 #endif // defined(USB_METHODS_INLINE)
-
-#endif /* USBCORE_H */

Marlin/src/sd/usb_flashdrive/lib/macros.h

@@ -26,8 +26,7 @@ e-mail   :  support@circuitsathome.com
   #error "Never include macros.h directly; include Usb.h instead"
 #endif
 
-#ifndef MACROS_H
+#pragma once
-#define MACROS_H
 
 ////////////////////////////////////////////////////////////////////////////////
 // HANDY MACROS
@@ -85,5 +84,3 @@ e-mail   :  support@circuitsathome.com
 #define USBTRACE1(s,l) (Notify(PSTR(s), l))
 #define USBTRACE2(s,r) (Notify(PSTR(s), 0x80), D_PrintHex((r), 0x80), Notify(PSTR("\r\n"), 0x80))
 #define USBTRACE3(s,r,l) (Notify(PSTR(s), l), D_PrintHex((r), l), Notify(PSTR("\r\n"), l))
-
-#endif /* MACROS_H */

Marlin/src/sd/usb_flashdrive/lib/masstorage.h

@@ -22,8 +22,7 @@ Web      :  http://www.circuitsathome.com
 e-mail   :  support@circuitsathome.com
  */
 
-#if !defined(__MASSTORAGE_H__)
+#pragma once
-#define __MASSTORAGE_H__
 
 // Cruft removal, makes driver smaller, faster.
 #ifndef MS_WANT_PARSER
@@ -499,6 +498,7 @@ protected:
   virtual uint8_t OnInit() {
     return 0;
   };
+
 public:
   BulkOnly(USB *p);
 
@@ -574,5 +574,3 @@ private:
   uint8_t HandleSCSIError(uint8_t status);
 
 };
-
-#endif // __MASSTORAGE_H__

Marlin/src/sd/usb_flashdrive/lib/settings.h

@@ -22,8 +22,7 @@ Web      :  http://www.circuitsathome.com
 e-mail   :  support@circuitsathome.com
  */
 
-#ifndef USB_HOST_SHIELD_SETTINGS_H
+#pragma once
-#define USB_HOST_SHIELD_SETTINGS_H
 
 #include "../../../inc/MarlinConfig.h"
 
@@ -232,5 +231,3 @@ e-mail   :  support@circuitsathome.com
 #ifdef ARDUINO_ESP8266_WIFIO
   #error "This board is currently not supported"
 #endif
-
-#endif /* SETTINGS_H */

Marlin/src/sd/usb_flashdrive/usb_host.h

@@ -19,8 +19,7 @@
  *   location: <http://www.gnu.org/licenses/>.                              *
  ****************************************************************************/
 
-#ifndef _USB_HOST_H_
+#pragma once
-#define _USB_HOST_H_
 
 /* This the following comes from "lib/usbhost.h", but has been rewritten
  * to use the SPI functions from Marlin's HAL */
@@ -57,5 +56,3 @@ class MAX3421e {
 #if defined(__SAM3X8E__) && !defined(ARDUINO_SAM_DUE)
   #define ARDUINO_SAM_DUE // Spoof the USB library that this is a DUE
 #endif
-
-#endif // _USB_HOST_H_

buildroot/share/fonts/getline.h

@@ -1,6 +1,5 @@
-
 #ifndef MYGETLINE_H
-#define MYGETLINE_H 1
+#define MYGETLINE_H
 
 //#include "config.h"