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diff --git a/Marlin/src/HAL/LPC1768/HAL.h b/Marlin/src/HAL/LPC1768/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_LPC1768/HAL.h
+ * Hardware Abstraction Layer for NXP LPC1768
+ */
+
+#define CPU_32_BIT
+
+void HAL_init();
+
+#include <stdint.h>
+#include <stdarg.h>
+#include <algorithm>
+
+extern "C" volatile uint32_t _millis;
+
+#include "../shared/Marduino.h"
+#include "../shared/math_32bit.h"
+#include "../shared/HAL_SPI.h"
+#include "fastio.h"
+#include "watchdog.h"
+#include "MarlinSerial.h"
+
+#include <adc.h>
+#include <pinmapping.h>
+#include <CDCSerial.h>
+
+//
+// Default graphical display delays
+//
+#ifndef ST7920_DELAY_1
+  #define ST7920_DELAY_1 DELAY_NS(600)
+#endif
+#ifndef ST7920_DELAY_2
+  #define ST7920_DELAY_2 DELAY_NS(750)
+#endif
+#ifndef ST7920_DELAY_3
+  #define ST7920_DELAY_3 DELAY_NS(750)
+#endif
+
+typedef ForwardSerial0Type< decltype(UsbSerial) > DefaultSerial;
+extern DefaultSerial USBSerial;
+
+#define _MSERIAL(X) MSerial##X
+#define MSERIAL(X) _MSERIAL(X)
+#define MSerial0 MSerial
+
+#if SERIAL_PORT == -1
+  #define MYSERIAL0 USBSerial
+#elif WITHIN(SERIAL_PORT, 0, 3)
+  #define MYSERIAL0 MSERIAL(SERIAL_PORT)
+#else
+  #error "SERIAL_PORT must be from -1 to 3. Please update your configuration."
+#endif
+
+#ifdef SERIAL_PORT_2
+  #if SERIAL_PORT_2 == -1
+    #define MYSERIAL1 USBSerial
+  #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 MMU2_SERIAL_PORT == -1
+    #define MMU2_SERIAL USBSerial
+  #elif WITHIN(MMU2_SERIAL_PORT, 0, 3)
+    #define MMU2_SERIAL MSERIAL(MMU2_SERIAL_PORT)
+  #else
+    #error "MMU2_SERIAL_PORT must be from -1 to 3. Please update your configuration."
+  #endif
+#endif
+
+#ifdef LCD_SERIAL_PORT
+  #if LCD_SERIAL_PORT == -1
+    #define LCD_SERIAL USBSerial
+  #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
+
+//
+// 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()
+
+//
+// Utility functions
+//
+#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
+
+//
+// ADC API
+//
+
+#define ADC_MEDIAN_FILTER_SIZE (23) // Higher values increase step delay (phase shift),
+                                    // (ADC_MEDIAN_FILTER_SIZE + 1) / 2 sample step delay (12 samples @ 500Hz: 24ms phase shift)
+                                    // Memory usage per ADC channel (bytes): (6 * ADC_MEDIAN_FILTER_SIZE) + 16
+                                    // 8 * ((6 * 23) + 16 ) = 1232 Bytes for 8 channels
+
+#define ADC_LOWPASS_K_VALUE    (2)  // Higher values increase rise time
+                                    // Rise time sample delays for 100% signal convergence on full range step
+                                    // (1 : 13, 2 : 32, 3 : 67, 4 : 139, 5 : 281, 6 : 565, 7 : 1135, 8 : 2273)
+                                    // K = 6, 565 samples, 500Hz sample rate, 1.13s convergence on full range step
+                                    // Memory usage per ADC channel (bytes): 4 (32 Bytes for 8 channels)
+
+#define HAL_ADC_VREF            3.3 // ADC voltage reference
+
+#define HAL_ADC_RESOLUTION     12   // 15 bit maximum, raw temperature is stored as int16_t
+#define HAL_ADC_FILTERED            // Disable oversampling done in Marlin as ADC values already filtered in HAL
+
+using FilteredADC = LPC176x::ADC<ADC_LOWPASS_K_VALUE, ADC_MEDIAN_FILTER_SIZE>;
+extern uint32_t HAL_adc_reading;
+[[gnu::always_inline]] inline void HAL_start_adc(const pin_t pin) {
+  HAL_adc_reading = FilteredADC::read(pin) >> (16 - HAL_ADC_RESOLUTION); // returns 16bit value, reduce to required bits
+}
+[[gnu::always_inline]] inline uint16_t HAL_read_adc() {
+  return HAL_adc_reading;
+}
+
+#define HAL_adc_init()
+#define HAL_ANALOG_SELECT(pin) FilteredADC::enable_channel(pin)
+#define HAL_START_ADC(pin)     HAL_start_adc(pin)
+#define HAL_READ_ADC()         HAL_read_adc()
+#define HAL_ADC_READY()        (true)
+
+// Test whether the pin is valid
+constexpr bool VALID_PIN(const pin_t pin) {
+  return LPC176x::pin_is_valid(pin);
+}
+
+// Get the analog index for a digital pin
+constexpr int8_t DIGITAL_PIN_TO_ANALOG_PIN(const pin_t pin) {
+  return (LPC176x::pin_is_valid(pin) && LPC176x::pin_has_adc(pin)) ? pin : -1;
+}
+
+// Return the index of a pin number
+constexpr int16_t GET_PIN_MAP_INDEX(const pin_t pin) {
+  return LPC176x::pin_index(pin);
+}
+
+// Get the pin number at the given index
+constexpr pin_t GET_PIN_MAP_PIN(const int16_t index) {
+  return LPC176x::pin_index(index);
+}
+
+// Parse a G-code word into a pin index
+int16_t PARSED_PIN_INDEX(const char code, const int16_t dval);
+// P0.6 thru P0.9 are for the onboard SD card
+#define HAL_SENSITIVE_PINS P0_06, P0_07, P0_08, P0_09
+
+#define HAL_IDLETASK 1
+void HAL_idletask();
+
+#define PLATFORM_M997_SUPPORT
+void flashFirmware(const int16_t);
+
+#define HAL_CAN_SET_PWM_FREQ   // This HAL supports PWM Frequency adjustment
+
+/**
+ * set_pwm_frequency
+ *  Set the frequency of the timer corresponding to the provided pin
+ *  All Hardware PWM pins run at the same frequency and all
+ *  Software PWM pins run at the same frequency
+ */
+void set_pwm_frequency(const pin_t pin, int f_desired);
+
+/**
+ * set_pwm_duty
+ *  Set the PWM duty cycle of the provided pin to the provided value
+ *  Optionally allows inverting the duty cycle [default = false]
+ *  Optionally allows changing the maximum size of the provided value to enable finer PWM duty control [default = 255]
+ */
+void set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t v_size=255, const bool invert=false);
+
+// Reset source
+void HAL_clear_reset_source(void);
+uint8_t HAL_get_reset_source(void);
+
+inline void HAL_reboot() {}  // reboot the board or restart the bootloader