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diff --git a/Marlin/src/HAL/LINUX/include/pinmapping.h b/Marlin/src/HAL/LINUX/include/pinmapping.h
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+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 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 <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "../../../inc/MarlinConfigPre.h"
+
+#include <stdint.h>
+#include "../hardware/Gpio.h"
+
+typedef pin_type pin_t;
+
+#define P_NC -1
+constexpr uint16_t NUM_DIGITAL_PINS = Gpio::pin_count;
+constexpr uint8_t NUM_ANALOG_INPUTS = 16;
+
+#define HAL_SENSITIVE_PINS
+
+// Get the digital pin for an analog index
+pin_t analogInputToDigitalPin(const int8_t p);
+
+// Return the index of a pin number
+int16_t GET_PIN_MAP_INDEX(const pin_t pin);
+
+// Test whether the pin is valid
+bool VALID_PIN(const pin_t p);
+
+// Get the analog index for a digital pin
+int8_t DIGITAL_PIN_TO_ANALOG_PIN(const pin_t p);
+
+// Test whether the pin is PWM
+bool PWM_PIN(const pin_t p);
+
+// Test whether the pin is interruptable
+bool INTERRUPT_PIN(const pin_t p);
+
+// Get the pin number at the given index
+pin_t GET_PIN_MAP_PIN(const int16_t ind);
+
+// Parse a G-code word into a pin index
+int16_t PARSED_PIN_INDEX(const char code, const int16_t dval);