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diff --git a/Marlin/src/HAL/DUE/HAL.h b/Marlin/src/HAL/DUE/HAL.h
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+/**
+ * Marlin 3D Printer Firmware
+ *
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+/**
+ * HAL for Arduino Due and compatible (SAM3X8E)
+ */
+
+#define CPU_32_BIT
+
+#include "../shared/Marduino.h"
+#include "../shared/eeprom_if.h"
+#include "../shared/math_32bit.h"
+#include "../shared/HAL_SPI.h"
+#include "fastio.h"
+#include "watchdog.h"
+
+#include <stdint.h>
+
+#include "../../core/serial_hook.h"
+typedef ForwardSerial0Type< decltype(Serial) > DefaultSerial;
+extern DefaultSerial MSerial;
+
+typedef ForwardSerial0Type< decltype(Serial1) > DefaultSerial1;
+typedef ForwardSerial0Type< decltype(Serial2) > DefaultSerial2;
+typedef ForwardSerial0Type< decltype(Serial3) > DefaultSerial3;
+extern DefaultSerial1 MSerial1;
+extern DefaultSerial2 MSerial2;
+extern DefaultSerial3 MSerial3;
+
+#define _MSERIAL(X) MSerial##X
+#define MSERIAL(X) _MSERIAL(X)
+#define MSerial0 MSerial
+
+// Define MYSERIAL0/1 before MarlinSerial includes!
+#if SERIAL_PORT == -1 || ENABLED(EMERGENCY_PARSER)
+  #define MYSERIAL0 customizedSerial1
+#elif WITHIN(SERIAL_PORT, 0, 3)
+  #define MYSERIAL0 MSERIAL(SERIAL_PORT)
+#else
+  #error "The required SERIAL_PORT must be from -1 to 3. Please update your configuration."
+#endif
+
+#ifdef SERIAL_PORT_2
+  #if SERIAL_PORT_2 == -1 || ENABLED(EMERGENCY_PARSER)
+    #define MYSERIAL1 customizedSerial2
+  #elif WITHIN(SERIAL_PORT_2, 0, 3)
+    #define MYSERIAL1 MSERIAL(SERIAL_PORT_2)
+  #else
+    #error "SERIAL_PORT_2 must be from -1 to 3. Please update your configuration."
+  #endif
+#endif
+
+#ifdef MMU2_SERIAL_PORT
+  #if WITHIN(MMU2_SERIAL_PORT, 0, 3)
+    #define MMU2_SERIAL MSERIAL(MMU2_SERIAL_PORT)
+  #else
+    #error "MMU2_SERIAL_PORT must be from 0 to 3. Please update your configuration."
+  #endif
+#endif
+
+#ifdef LCD_SERIAL_PORT
+  #if LCD_SERIAL_PORT == -1
+    #define LCD_SERIAL lcdSerial
+  #elif WITHIN(LCD_SERIAL_PORT, 0, 3)
+    #define LCD_SERIAL MSERIAL(LCD_SERIAL_PORT)
+  #else
+    #error "LCD_SERIAL_PORT must be from -1 to 3. Please update your configuration."
+  #endif
+#endif
+
+#include "MarlinSerial.h"
+#include "MarlinSerialUSB.h"
+
+// On AVR this is in math.h?
+#define square(x) ((x)*(x))
+
+typedef int8_t pin_t;
+
+#define SHARED_SERVOS HAS_SERVOS
+#define HAL_SERVO_LIB Servo
+
+//
+// Interrupts
+//
+#define CRITICAL_SECTION_START()  uint32_t primask = __get_PRIMASK(); __disable_irq()
+#define CRITICAL_SECTION_END()    if (!primask) __enable_irq()
+#define ISRS_ENABLED() (!__get_PRIMASK())
+#define ENABLE_ISRS()  __enable_irq()
+#define DISABLE_ISRS() __disable_irq()
+
+void cli();                     // Disable interrupts
+void sei();                     // Enable interrupts
+
+void HAL_clear_reset_source();  // clear reset reason
+uint8_t HAL_get_reset_source(); // get reset reason
+
+inline void HAL_reboot() {}  // reboot the board or restart the bootloader
+
+//
+// ADC
+//
+extern uint16_t HAL_adc_result;     // result of last ADC conversion
+
+#ifndef analogInputToDigitalPin
+  #define analogInputToDigitalPin(p) ((p < 12U) ? (p) + 54U : -1)
+#endif
+
+#define HAL_ANALOG_SELECT(ch)
+
+inline void HAL_adc_init() {}//todo
+
+#define HAL_ADC_VREF         3.3
+#define HAL_ADC_RESOLUTION  10
+#define HAL_START_ADC(ch)   HAL_adc_start_conversion(ch)
+#define HAL_READ_ADC()      HAL_adc_result
+#define HAL_ADC_READY()     true
+
+void HAL_adc_start_conversion(const uint8_t ch);
+uint16_t HAL_adc_get_result();
+
+//
+// Pin Map
+//
+#define GET_PIN_MAP_PIN(index) index
+#define GET_PIN_MAP_INDEX(pin) pin
+#define PARSED_PIN_INDEX(code, dval) parser.intval(code, dval)
+
+//
+// Tone
+//
+void toneInit();
+void tone(const pin_t _pin, const unsigned int frequency, const unsigned long duration=0);
+void noTone(const pin_t _pin);
+
+// Enable hooks into idle and setup for HAL
+#define HAL_IDLETASK 1
+void HAL_idletask();
+void HAL_init();
+
+//
+// Utility functions
+//
+void _delay_ms(const int delay);
+
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic push
+  #pragma GCC diagnostic ignored "-Wunused-function"
+#endif
+
+int freeMemory();
+
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic pop
+#endif
+
+#ifdef __cplusplus
+  extern "C" {
+#endif
+char *dtostrf(double __val, signed char __width, unsigned char __prec, char *__s);
+#ifdef __cplusplus
+  }
+#endif