move source under core/ directory

- adds a "namespace" for each header
- makes clear where a header is expected to come from
- better facilitates explicit includes

include/Arduino.h → include/core/Arduino.h

 #ifndef Arduino_h
 #define Arduino_h
 
-#include "WProgram.h"
-#include "pins_arduino.h"
+#include "core/WProgram.h"
+#include "core/pins_arduino.h"
 
 #endif

include/Client.h → include/core/Client.h

 
 #ifndef client_h
 #define client_h
-#include "Print.h"
-#include "Stream.h"
-#include "IPAddress.h"
+#include "core/Print.h"
+#include "core/Stream.h"
+#include "core/IPAddress.h"
 
 class Client : public Stream {
 

include/DMAChannel.h → include/core/DMAChannel.h

 #ifndef DMAChannel_h_
 #define DMAChannel_h_
 
-#include "imxrt.h"
+#include "core/imxrt.h"
 
 // Discussion about DMAChannel is here:
 // http://forum.pjrc.com/threads/25778-Could-there-be-something-like-an-ISR-template-function/page3

include/EventResponder.h → include/core/EventResponder.h

 #if !defined(EventResponder_h) && defined(__cplusplus)
 #define EventResponder_h
 
-#include <Arduino.h>
+#include <core/Arduino.h>
 
 /* EventResponder lets you control how your program responds to an event.
  * Imagine a basketball or football (American soccer) player who gets the

include/FS.h → include/core/FS.h

 #define FS_H
 #ifdef __cplusplus
 
-#include <Arduino.h>
+#include <core/Arduino.h>
 
 #define FILE_READ  0
 #define FILE_WRITE 1

include/HardwareSerial.h → include/core/HardwareSerial.h

 #ifndef HardwareSerial_h
 #define HardwareSerial_h
 
-#include "imxrt.h"
+#include "core/imxrt.h"
 
 // Uncomment to enable 9 bit formats.  These are default disabled to save memory.
 //#define SERIAL_9BIT_SUPPORT

include/IPAddress.h → include/core/IPAddress.h

 #ifndef IPAddress_h
 #define IPAddress_h
 
-#include <Printable.h>
-#include <WString.h>
+#include <core/Printable.h>
+#include <core/WString.h>
 
 // A class to make it easier to handle and pass around IP addresses
 

include/IntervalTimer.h → include/core/IntervalTimer.h

 #define __INTERVALTIMER_H__
 
 #include <stddef.h>
-#include "imxrt.h"
+#include "core/imxrt.h"
 
 #ifdef __cplusplus
 extern "C" {

include/MIDIUSB.h → include/core/MIDIUSB.h

 
 // For compatibility with Arduino's MIDIUSB library
 
-#include "usb_midi.h"
+#include "core/usb_midi.h"
 
 #ifdef __cplusplus
 #if !defined(USB_MIDI) && !defined(USB_MIDI4) && !defined(USB_MIDI16) && !defined(USB_MIDI_SERIAL) && !defined(USB_MIDI4_SERIAL) && !defined(USB_MIDI16_SERIAL) && !defined(USB_MIDI_AUDIO_SERIAL) && !defined(USB_MIDI16_AUDIO_SERIAL) && !defined(USB_EVERYTHING)

include/Print.h → include/core/Print.h

 #include <inttypes.h>
 #include <stdio.h> // for size_t - gives sprintf and other stuff to all sketches & libs
 #include <stdarg.h>
-#include "core_id.h"
-#include "WString.h"
-#include "Printable.h"
+#include "core/core_id.h"
+#include "core/WString.h"
+#include "core/Printable.h"
 
 #define DEC 10
 #define HEX 16

include/Server.h → include/core/Server.h

 #ifndef server_h
 #define server_h
 
-#include "Print.h"
+#include "core/Print.h"
 
 class Server : public Print {
 public:

include/Stream.h → include/core/Stream.h

 #define Stream_h
 
 #include <inttypes.h>
-#include "Print.h"
+#include "core/Print.h"
 
 class Stream : public Print
 {

include/Udp.h → include/core/Udp.h

 #ifndef udp_h
 #define udp_h
 
-#include <Stream.h>
-#include <IPAddress.h>
+#include <core/Stream.h>
+#include <core/IPAddress.h>
 
 class UDP : public Stream {
 

include/WProgram.h → include/core/WProgram.h

 // some libraries and sketches depend on this
 // AVR stuff, assuming Arduino.h or WProgram.h
 // automatically includes it...
-#include <avr/pgmspace.h>
-#include <avr/interrupt.h>
+#include <core/avr/pgmspace.h>
+#include <core/avr/interrupt.h>
 
-#include "avr_functions.h"
-#include "wiring.h"
-#include "HardwareSerial.h"
+#include "core/avr_functions.h"
+#include "core/wiring.h"
+#include "core/HardwareSerial.h"
 
 #ifdef __cplusplus
 
-#include "avr_emulation.h"
-#include "usb_serial.h"
-#include "usb_seremu.h"
-#include "usb_keyboard.h"
-#include "usb_mouse.h"
-#include "usb_joystick.h"
-#include "usb_midi.h"
-#include "usb_rawhid.h"
-#include "usb_flightsim.h"
-//#include "usb_mtp.h"
-#include "usb_audio.h"
-#include "usb_touch.h"
-//#include "usb_undef.h" // do not allow usb_desc.h stuff to leak to user programs
-
-#include "WCharacter.h"
-#include "WString.h"
-#include "elapsedMillis.h"
-#include "IntervalTimer.h"
+#include "core/avr_emulation.h"
+#include "core/usb_serial.h"
+#include "core/usb_seremu.h"
+#include "core/usb_keyboard.h"
+#include "core/usb_mouse.h"
+#include "core/usb_joystick.h"
+#include "core/usb_midi.h"
+#include "core/usb_rawhid.h"
+#include "core/usb_flightsim.h"
+//#include "core/usb_mtp.h"
+#include "core/usb_audio.h"
+#include "core/usb_touch.h"
+//#include "core/usb_undef.h" // do not allow usb_desc.h stuff to leak to user programs
+
+#include "core/WCharacter.h"
+#include "core/WString.h"
+#include "core/elapsedMillis.h"
+#include "core/IntervalTimer.h"
 
 uint16_t makeWord(uint16_t w);
 uint16_t makeWord(byte h, byte l);
 void randomSeed(uint32_t newseed);
 void srandom(unsigned int newseed);
 
-#include "pins_arduino.h"
+#include "core/pins_arduino.h"
 
 #endif // __cplusplus
 

include/WString.h → include/core/WString.h

 #include <stdlib.h>
 #include <string.h>
 #include <ctype.h>
-#include "avr_functions.h"
+#include "core/avr_functions.h"
 
 // Not needed here, but some libs assume WString.h or Print.h
 // gives them PROGMEM and other AVR stuff.
-#include "avr/pgmspace.h"
+#include "core/avr/pgmspace.h"
 
 // When compiling programs with this class, the following gcc parameters
 // dramatically increase performance and memory (RAM) efficiency, typically

include/avr/eeprom.h → include/core/avr/eeprom.h

 #include <stddef.h>
 #include <stdint.h>
 
-#include "avr_functions.h"
+#include "core/avr_functions.h"
 
 #if defined(ARDUINO_TEENSY40)
 #define E2END 0x437

include/avr/io.h → include/core/avr/io.h

  * THE SOFTWARE.
  */
 
-#include "../avr_emulation.h"
+#include "core/avr_emulation.h"

include/avr_emulation.h → include/core/avr_emulation.h

 #ifndef _avr_emulation_h_
 #define _avr_emulation_h_
 
-#include "imxrt.h"
-#include "core_pins.h"
-#include "pins_arduino.h"
+#include "core/imxrt.h"
+#include "core/core_pins.h"
+#include "core/pins_arduino.h"
 
 #ifdef __cplusplus
 

include/cmsis_gcc.h → include/core/cmsis_gcc.h

 #endif
 
 #ifdef TEENSYDUINO
-#include <irq.h>
+#include <core/irq.h>
 #endif
 
 /* CMSIS compiler specific defines */

include/core_cm7.h → include/core/core_cm7.h

   @{
  */
 
-#include "cmsis_version.h"
+#include "core/cmsis_version.h"
 
 /*  CMSIS CM7 definitions */
 #define __CM7_CMSIS_VERSION_MAIN  (__CM_CMSIS_VERSION_MAIN)                  /*!< \deprecated [31:16] CMSIS HAL main version */

include/core_pins.h → include/core/core_pins.h

  */
 
 #pragma once
-#include "imxrt.h"
-#include "pins_arduino.h"
+#include "core/imxrt.h"
+#include "core/pins_arduino.h"
 
 #define HIGH			1
 #define LOW			0

include/elapsedMillis.h → include/core/elapsedMillis.h

 #ifdef __cplusplus
 
 #if ARDUINO >= 100
-#include "Arduino.h"
+#include "core/Arduino.h"
 #else
-#include "WProgram.h"
+#include "core/WProgram.h"
 #endif
 
 class elapsedMillis

include/imxrt.h → include/core/imxrt.h

 #pragma once
 #include <stdint.h>
-#include <irq.h>
+#include <core/irq.h>
 
 // Definitions based these documents:
 //   i.MX RT1060 Reference Manual, Rev. 2, 12/2019 - https://www.pjrc.com/teensy/datasheets.html

include/keylayouts.h → include/core/keylayouts.h

 #define KEYLAYOUTS_H__
 
 #include <stdint.h>
-#include <avr/pgmspace.h>
+#include <core/avr/pgmspace.h>
 
 #ifdef __cplusplus
 extern "C"{

include/math_helper.h → include/core/math_helper.h

 * -------------------------------------------------------------------- */
 
 
-#include "arm_math.h"
+#include "core/arm_math.h"
 
 #ifndef MATH_HELPER_H
 #define MATH_HELPER_H

include/pgmspace.h → include/core/pgmspace.h

 // For compatibility with some ESP8266 programs
-#include <avr/pgmspace.h>
+#include <core/avr/pgmspace.h>

include/smalloc_i.h → include/core/smalloc_i.h

 #ifndef _SMALLOC_I_H
 #define _SMALLOC_I_H
 
-#include "smalloc.h"
+#include "core/smalloc.h"
 #include <string.h>
 #include <limits.h>
 #include <errno.h>

include/usb_audio.h → include/core/usb_audio.h

 
 #pragma once
 
-#include "usb_desc.h"
+#include "core/usb_desc.h"
 #ifdef AUDIO_INTERFACE
 
 #define FEATURE_MAX_VOLUME 0xFFF  // volume accepted from 0 to 0xFFF
 };
 
 #ifdef __cplusplus
-#include "AudioStream.h"
+#include "core/AudioStream.h"
 
 class AudioInputUSB : public AudioStream
 {

include/usb_dev.h → include/core/usb_dev.h

 #pragma once
-#include "imxrt.h"
+#include "core/imxrt.h"
 
 #if !defined(USB_DISABLED)
 

include/usb_flightsim.h → include/core/usb_flightsim.h

 #ifndef USBflightsim_h_
 #define USBflightsim_h_
 
-#include "usb_desc.h"
+#include "core/usb_desc.h"
 
 #if defined(FLIGHTSIM_INTERFACE)
 
 #ifdef __cplusplus
 
 #include <inttypes.h>
-#include "elapsedMillis.h"
+#include "core/elapsedMillis.h"
 
 // workaround for elapsedMillis.h bringing in WProgram.h which brings usb_undef.h
 //#undef USB_DESC_LIST_DEFINE
-//#include "usb_desc.h"
+//#include "core/usb_desc.h"
 
 class FlightSimClass;
 class FlightSimCommand;

include/usb_joystick.h → include/core/usb_joystick.h

 #ifndef USBjoystick_h_
 #define USBjoystick_h_
 
-#include "usb_desc.h"
+#include "core/usb_desc.h"
 
 #if defined(JOYSTICK_INTERFACE)
 

include/usb_keyboard.h → include/core/usb_keyboard.h

 
 #pragma once
 
-#include "usb_desc.h"
+#include "core/usb_desc.h"
 
-#include "keylayouts.h"
+#include "core/keylayouts.h"
 
 #if defined(KEYBOARD_INTERFACE)
 
 
 // C++ interface
 #ifdef __cplusplus
-#include "Stream.h"
+#include "core/Stream.h"
 class usb_keyboard_class : public Print
 {
 public:

include/usb_midi.h → include/core/usb_midi.h

 #ifndef USBmidi_h_
 #define USBmidi_h_
 
-#include "usb_desc.h"
+#include "core/usb_desc.h"
 
 #if defined(MIDI_INTERFACE)
 

include/usb_mouse.h → include/core/usb_mouse.h

 #ifndef USBmouse_h_
 #define USBmouse_h_
 
-#include "usb_desc.h"
+#include "core/usb_desc.h"
 
 #if defined(MOUSE_INTERFACE)
 

include/usb_mtp.h → include/core/usb_mtp.h

 
 #pragma once
 
-#include "usb_desc.h"
+#include "core/usb_desc.h"
 
 #if defined(MTP_INTERFACE)
 

include/usb_rawhid.h → include/core/usb_rawhid.h

 
 #pragma once
 
-#include "usb_desc.h"
+#include "core/usb_desc.h"
 
 #if defined(RAWHID_INTERFACE)
 

include/usb_seremu.h → include/core/usb_seremu.h

 
 #pragma once
 
-#include "usb_desc.h"
+#include "core/usb_desc.h"
 
 #if defined(SEREMU_INTERFACE) && !defined(CDC_STATUS_INTERFACE) && !defined(CDC_DATA_INTERFACE)
 
 
 // C++ interface
 #ifdef __cplusplus
-#include "Stream.h"
+#include "core/Stream.h"
 class usb_seremu_class : public Stream
 {
 public:
 #if 0
 // Allow Arduino programs using Serial to compile, but Serial will do nothing.
 #ifdef __cplusplus
-#include "Stream.h"
+#include "core/Stream.h"
 class usb_seremu_class : public Stream
 {
 public:

include/usb_serial.h → include/core/usb_serial.h

 
 #pragma once
 
-#include "usb_desc.h"
+#include "core/usb_desc.h"
 #include <stdint.h>
 
 #if (defined(CDC_STATUS_INTERFACE) && defined(CDC_DATA_INTERFACE)) || defined(USB_DISABLED)
 
 // C++ interface
 #ifdef __cplusplus
-#include "Stream.h"
+#include "core/Stream.h"
 class usb_serial_class : public Stream
 {
 public:

include/usb_touch.h → include/core/usb_touch.h

 #ifndef USBtouchscreen_h_
 #define USBtouchscreen_h_
 
-#include "usb_desc.h"
+#include "core/usb_desc.h"
 
 #if defined(MULTITOUCH_INTERFACE)
 

include/wiring.h → include/core/wiring.h

 #include <stdint.h>
 #include <stdlib.h>
 #include <stdbool.h>
-#include "binary.h"
-#include "core_id.h"
-#include "core_pins.h"
+#include "core/binary.h"
+#include "core/core_id.h"
+#include "core/core_pins.h"
 
 // type_traits interferes with min() and other defines
 // include it early, so we can define these later

src/AudioStream.cpp → src/core/AudioStream.cpp

  * SOFTWARE.
  */
 
-
-#include <Arduino.h>
-#include "AudioStream.h"
+#include <core/Arduino.h>
+#include "core/AudioStream.h"
 
 #if defined(__IMXRT1062__)
   #define MAX_AUDIO_MEMORY 229376

src/DMAChannel.cpp → src/core/DMAChannel.cpp

  * SOFTWARE.
  */
 
-#include "DMAChannel.h"
+#include "core/DMAChannel.h"
 
 // only 16 channels supported, because we don't handle sharing interrupts
 #define DMA_MAX_CHANNELS 16

src/EventResponder.cpp → src/core/EventResponder.cpp

  *     https://forum.pjrc.com/threads/44723-Arduino-Events
  */
 
-#include <Arduino.h>
-#include "EventResponder.h"
+#include <core/Arduino.h>
+#include "core/EventResponder.h"
 
 EventResponder * EventResponder::firstYield = nullptr;
 EventResponder * EventResponder::lastYield = nullptr;

src/HardwareSerial.cpp → src/core/HardwareSerial.cpp

  * SOFTWARE.
  */
 
-#include "HardwareSerial.h"
-#include "core_pins.h"
-#include "Arduino.h"
-//#include "debug/printf.h"
+#include "core/HardwareSerial.h"
+#include "core/core_pins.h"
+#include "core/Arduino.h"
+//#include "core/debug/printf.h"
 
 /*typedef struct {
         const uint32_t VERID;

src/HardwareSerial1.cpp → src/core/HardwareSerial1.cpp

  * SOFTWARE.
  */
 
-#include <Arduino.h>
-#include "HardwareSerial.h"
+#include <core/Arduino.h>
+#include "core/HardwareSerial.h"
 
 #ifndef SERIAL1_TX_BUFFER_SIZE
 #define SERIAL1_TX_BUFFER_SIZE     64 // number of outgoing bytes to buffer

src/HardwareSerial2.cpp → src/core/HardwareSerial2.cpp

  * SOFTWARE.
  */
 
-#include <Arduino.h>
-#include "HardwareSerial.h"
+#include <core/Arduino.h>
+#include "core/HardwareSerial.h"
 
 #ifndef SERIAL2_TX_BUFFER_SIZE
 #define SERIAL2_TX_BUFFER_SIZE     40 // number of outgoing bytes to buffer

src/HardwareSerial3.cpp → src/core/HardwareSerial3.cpp

  * SOFTWARE.
  */
 
-#include <Arduino.h>
-#include "HardwareSerial.h"
+#include <core/Arduino.h>
+#include "core/HardwareSerial.h"
 
 #ifndef SERIAL3_TX_BUFFER_SIZE
 #define SERIAL3_TX_BUFFER_SIZE     40 // number of outgoing bytes to buffer

src/HardwareSerial4.cpp → src/core/HardwareSerial4.cpp

  * SOFTWARE.
  */
 
-#include <Arduino.h>
-#include "HardwareSerial.h"
+#include <core/Arduino.h>
+#include "core/HardwareSerial.h"
 
 #ifndef SERIAL4_TX_BUFFER_SIZE
 #define SERIAL4_TX_BUFFER_SIZE     40 // number of outgoing bytes to buffer

src/HardwareSerial5.cpp → src/core/HardwareSerial5.cpp

  * SOFTWARE.
  */
 
-#include <Arduino.h>
-#include "HardwareSerial.h"
+#include <core/Arduino.h>
+#include "core/HardwareSerial.h"
 
 #ifndef SERIAL5_TX_BUFFER_SIZE
 #define SERIAL5_TX_BUFFER_SIZE     40 // number of outgoing bytes to buffer

src/HardwareSerial6.cpp → src/core/HardwareSerial6.cpp

  * SOFTWARE.
  */
 
-#include <Arduino.h>
-#include "HardwareSerial.h"
+#include <core/Arduino.h>
+#include "core/HardwareSerial.h"
 
 #ifndef SERIAL6_TX_BUFFER_SIZE
 #define SERIAL6_TX_BUFFER_SIZE     40 // number of outgoing bytes to buffer

src/HardwareSerial7.cpp → src/core/HardwareSerial7.cpp

  * SOFTWARE.
  */
 
-#include <Arduino.h>
-#include "HardwareSerial.h"
+#include <core/Arduino.h>
+#include "core/HardwareSerial.h"
 
 #ifndef SERIAL7_TX_BUFFER_SIZE
 #define SERIAL7_TX_BUFFER_SIZE     40 // number of outgoing bytes to buffer

src/HardwareSerial8.cpp → src/core/HardwareSerial8.cpp

  * SOFTWARE.
  */
 
-#include <Arduino.h>
-#include "HardwareSerial.h"
+#include <core/Arduino.h>
+#include "core/HardwareSerial.h"
 #if defined(__IMXRT1062__) && defined(ARDUINO_TEENSY41)
 
 #ifndef SERIAL8_TX_BUFFER_SIZE

src/IPAddress.cpp → src/core/IPAddress.cpp

   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
-#include <Arduino.h>
-#include "IPAddress.h"
+#include <core/Arduino.h>
+#include "core/IPAddress.h"
 
 size_t IPAddress::printTo(Print& p) const
 {

src/IntervalTimer.cpp → src/core/IntervalTimer.cpp

  * SOFTWARE.
  */
 
-#include "IntervalTimer.h"
-#include "debug/printf.h"
+#include "core/IntervalTimer.h"
+#include "core/debug/printf.h"
 
 static void pit_isr(void);
 

src/Print.cpp → src/core/Print.cpp

 // developed for Teensyduino have made their way back into
 // Arduino's code base.  :-)
 
-#include <Arduino.h>
+#include <core/Arduino.h>
 
-#include "debug/printf.h"
+#include "core/debug/printf.h"
 #undef printf
 
 size_t Print::write(const uint8_t *buffer, size_t size)

src/Stream.cpp → src/core/Stream.cpp

  parsing functions based on TextFinder library by Michael Margolis
  */
 
-#include <Arduino.h>
+#include <core/Arduino.h>
 
 #define PARSE_TIMEOUT 1000  // default number of milli-seconds to wait
 #define NO_SKIP_CHAR  1  // a magic char not found in a valid ASCII numeric field
   if( target == nullptr) return true;
   if( *target == 0) return true;   // return true if target is a null string
   if (terminator == nullptr) termLen = 0;
-	
+
   while( (c = timedRead()) > 0){
     if( c == target[index]){
     //////Serial.print("found "); Serial.write(c); Serial.print("index now"); Serial.println(index+1);

src/Tone.cpp → src/core/Tone.cpp

  * SOFTWARE.
  */
 
-#include <Arduino.h>
+#include <core/Arduino.h>
 
 // IntervalTimer based tone.  This allows tone() to share the timers with other
 // libraries, rather than permanently hogging one PIT timer even for projects

src/WString.cpp → src/core/WString.cpp

   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
-#include <Arduino.h>
+#include <core/Arduino.h>
 
 
 /*********************************************/

src/analog.c → src/core/analog.c

-#include "imxrt.h"
-#include "core_pins.h"
-#include "debug/printf.h"
-#include "avr/pgmspace.h"
+#include "core/imxrt.h"
+#include "core/core_pins.h"
+#include "core/debug/printf.h"
+#include "core/avr/pgmspace.h"
 
 static uint8_t calibrating;
 static uint8_t analog_config_bits = 10;

src/bootdata.c → src/core/bootdata.c

-//#include "imxrt.h"
+//#include "core/imxrt.h"
 
 #include <stdint.h>
 

src/clockspeed.c → src/core/clockspeed.c

 #include <stdint.h>
-#include "imxrt.h"
-#include "wiring.h"
-#include "debug/printf.h"
+#include "core/imxrt.h"
+#include "core/wiring.h"
+#include "core/debug/printf.h"
 
 // A brief explanation of F_CPU_ACTUAL vs F_CPU
 //  https://forum.pjrc.com/threads/57236?p=212642&viewfull=1#post212642

src/debugprintf.c → src/core/debugprintf.c

-#include "debug/printf.h"
+#include "core/debug/printf.h"
 
 #ifdef PRINT_DEBUG_STUFF
 
-#include "avr/pgmspace.h"
+#include "core/avr/pgmspace.h"
 #include <stdarg.h>
-#include "imxrt.h"
- #include "usb_desc.h"
+#include "core/imxrt.h"
+ #include "core/usb_desc.h"
 
 void putchar_debug(char c);
 static void puint_debug(unsigned int num);
 
 // first is this normal Serial?
 #if defined(PRINT_DEBUG_USING_USB) && defined(CDC_STATUS_INTERFACE) && defined(CDC_DATA_INTERFACE)
-#include "usb_dev.h"
-#include "usb_serial.h"
+#include "core/usb_dev.h"
+#include "core/usb_serial.h"
 FLASHMEM void putchar_debug(char c)
 {
 	usb_serial_putchar(c);
 FLASHMEM void printf_debug_init(void) {}
 
 #elif defined(PRINT_DEBUG_USING_USB) && defined(SEREMU_INTERFACE) && !defined(CDC_STATUS_INTERFACE) && !defined(CDC_DATA_INTERFACE)
-#include "usb_dev.h"
-#include "usb_seremu.h"
+#include "core/usb_dev.h"
+#include "core/usb_seremu.h"
 FLASHMEM void putchar_debug(char c)
 {
 	usb_seremu_putchar(c);

src/delay.c → src/core/delay.c

-#include "core_pins.h"
-#include "arm_math.h"	// micros() synchronization
+#include "core/core_pins.h"
+#include "core/arm_math.h"	// micros() synchronization
 
 //volatile uint32_t F_CPU = 396000000;
 //volatile uint32_t F_BUS = 132000000;

src/digital.c → src/core/digital.c

 
-#include "core_pins.h"
+#include "core/core_pins.h"
 
 /*
 struct digital_pin_bitband_and_config_table_struct {

src/eeprom.c → src/core/eeprom.c

 // Generally you should avoid editing this code, unless you really
 // know what you're doing.
 
-#include "imxrt.h"
-#include <avr/eeprom.h>
+#include "core/imxrt.h"
+#include <core/avr/eeprom.h>
 #include <string.h>
-#include "debug/printf.h"
+#include "core/debug/printf.h"
 
 #if defined(ARDUINO_TEENSY40)
 #define FLASH_BASEADDR 0x601F0000

src/extmem.c → src/core/extmem.c

 // but automatically fall back to internal RAM if external RAM can't be used.
 
 #include <stdlib.h>
-#include "smalloc.h"
-#include "wiring.h"
+#include "core/smalloc.h"
+#include "core/wiring.h"
 
 #if defined(ARDUINO_TEENSY41)
 // Teensy 4.1 external RAM address range is 0x70000000 to 0x7FFFFFFF

src/interrupt.c → src/core/interrupt.c

-#include "Arduino.h"
-#include "pins_arduino.h"
-#include "debug/printf.h"
+#include "core/Arduino.h"
+#include "core/pins_arduino.h"
+#include "core/debug/printf.h"
 
 #define DR_INDEX    0
 #define GDIR_INDEX  1

src/keylayouts.c → src/core/keylayouts.c

  * SOFTWARE.
  */
 
-#include <avr/pgmspace.h>
+#include <core/avr/pgmspace.h>
 #include <stdint.h>
 
-#include "keylayouts.h"
+#include "core/keylayouts.h"
 
 #ifdef M
 #undef M