Use a macro for HAL header redirection (#10380)

Marlin/src/HAL/HAL_DUE/HAL.cpp

@@ -29,7 +29,7 @@
 // Includes
 // --------------------------------------------------------------------------
 
-#include "../HAL.h"
+#include "HAL.h"
 
 #include <Wire.h>
 #include "usb/usb_task.h"

Marlin/src/HAL/HAL_DUE/HAL.h

@@ -29,10 +29,14 @@
 #ifndef _HAL_DUE_H
 #define _HAL_DUE_H
 
+#define CPU_32_BIT
+
 #include <stdint.h>
 
 #include <Arduino.h>
 
+#include "../math_32bit.h"
+#include "../HAL_SPI.h"
 #include "fastio_Due.h"
 #include "watchdog_Due.h"
 #include "HAL_timers_Due.h"

Marlin/src/HAL/HAL_DUE/HAL_timers_Due.cpp

@@ -32,7 +32,7 @@
 // Includes
 // --------------------------------------------------------------------------
 
-#include "../HAL.h"
+#include "HAL.h"
 
 #include "HAL_timers_Due.h"
 

Marlin/src/HAL/HAL_DUE/InterruptVectors_Due.cpp

@@ -32,7 +32,7 @@
  */
 #ifdef ARDUINO_ARCH_SAM
 
-#include "HAL_Due.h"
+#include "HAL.h"
 #include "InterruptVectors_Due.h"
 
 /* The relocated Exception/Interrupt Table - According to the ARM

Marlin/src/HAL/HAL_DUE/Tone.cpp

@@ -27,7 +27,7 @@
 
 #ifdef ARDUINO_ARCH_SAM
 
-#include "HAL_Due.h"
+#include "HAL.h"
 #include "HAL_timers_Due.h"
 
 static pin_t tone_pin;

Marlin/src/HAL/HAL_DUE/endstop_interrupts.h

@@ -34,8 +34,19 @@
  * (Located in Marlin/buildroot/share/pin_interrupt_test/pin_interrupt_test.ino)
  */
 
- #ifndef _ENDSTOP_INTERRUPTS_H_
- #define _ENDSTOP_INTERRUPTS_H_
+#ifndef _ENDSTOP_INTERRUPTS_H_
+#define _ENDSTOP_INTERRUPTS_H_
+
+volatile uint8_t e_hit = 0; // Different from 0 when the endstops should be tested in detail.
+                            // Must be reset to 0 by the test function when finished.
+
+// This is what is really done inside the interrupts.
+FORCE_INLINE void endstop_ISR_worker( void ) {
+  e_hit = 2; // Because the detection of a e-stop hit has a 1 step debouncer it has to be called at least twice.
+}
+
+// One ISR for all EXT-Interrupts
+void endstop_ISR(void) { endstop_ISR_worker(); }
 
 /**
  *  Endstop interrupts for Due based targets.

Marlin/src/HAL/HAL_DUE/watchdog_Due.h

@@ -25,7 +25,7 @@
 
 // Arduino Due core now has watchdog support
 
-#include "../HAL.h"
+#include "HAL.h"
 
 // Initialize watchdog with a 4 second interrupt time
 void watchdog_init();