Another batch of SPDX Additions

Adafruit_AD8495_Guide/AD8495_Temperature/AD8495_Temperature.ino

@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2019 Kattni Rembor for Adafruit Industries
+//
+// SPDX-License-Identifier: MIT
+//
 #define TC_PIN A0          // set to ADC pin used
 #define AREF 3.3           // set to AREF, typically board voltage like 3.3 or 5.0
 #define ADC_RESOLUTION 10  // set to ADC bit resolution, 10 is default

Adafruit_AD8495_Guide/code.py

@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2019 Kattni Rembor for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+#
 import time
 import analogio
 import board

Adafruit_DS2413/DS2413/DS2413.ino

@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2014 Bill Earl for Adafruit Industries
+//
+// SPDX-License-Identifier: MIT
+
 #include <OneWire.h>
 
 #define DS2413_ONEWIRE_PIN  (8)

Adafruit_ESP32_Arduino_Demos/ESP32_FirmwareUpdater/ESP32BootROM.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: 2015 Arduino SA
+//
+// SPDX-License-Identifier: GPL-2.1-or-later
 /*
   ESP32BootROM - part of the Firmware Updater for the
   Arduino MKR WiFi 1010, Arduino MKR Vidor 4000, and Arduino UNO WiFi Rev.2.

Adafruit_ESP32_Arduino_Demos/ESP32_FirmwareUpdater/ESP32BootROM.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: 2015 Arduino SA
+//
+// SPDX-License-Identifier: GPL-2.1-or-later
 /*
   ESP32BootROM - part of the Firmware Updater for the 
   Arduino MKR WiFi 1010, Arduino MKR Vidor 4000, and Arduino UNO WiFi Rev.2.

Adafruit_ESP32_Arduino_Demos/ESP32_FirmwareUpdater/ESP32_FirmwareUpdater.ino

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: 2018 Arduino SA
+//
+// SPDX-License-Identifier: GPL-2.1-or-later
 /*
   FirmwareUpdater - Firmware Updater for the 
   Arduino MKR WiFi 1010, Arduino MKR Vidor 4000, and Arduino UNO WiFi Rev.2.

Adafruit_ESP32_Arduino_Demos/ESP32_FirmwareUpdater/Endianess.cpp

@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2015 Arduino LLC
+//
+// SPDX-License-Identifier: GPL-2.1-or-later
+
 /*
   Endianess.ino - Network byte order conversion functions.
   Copyright (c) 2015 Arduino LLC.  All right reserved.

Adafruit_ESP32_Arduino_Demos/ESP32_QSPIFirmwareUpdater/ESP32BootROM.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: 2018 Arduino SA
+//
+// SPDX-License-Identifier: GPL-2.1-or-later
 /*
   ESP32BootROM - part of the Firmware Updater for the
   Arduino MKR WiFi 1010, Arduino MKR Vidor 4000, and Arduino UNO WiFi Rev.2.

Adafruit_ESP32_Arduino_Demos/ESP32_QSPIFirmwareUpdater/ESP32BootROM.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: 2018 Arduino SA
+//
+// SPDX-License-Identifier: GPL-2.1-or-later
 /*
   ESP32BootROM - part of the Firmware Updater for the 
   Arduino MKR WiFi 1010, Arduino MKR Vidor 4000, and Arduino UNO WiFi Rev.2.

Adafruit_ESP32_Arduino_Demos/ESP32_QSPIFirmwareUpdater/ESP32_QSPIFirmwareUpdater.ino

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: 2018 Arduino SA
+//
+// SPDX-License-Identifier: GPL-2.1-or-later
 /*
   FirmwareUpdater - Firmware Updater for the 
   Arduino MKR WiFi 1010, Arduino MKR Vidor 4000, and Arduino UNO WiFi Rev.2.

Adafruit_ESP32_Arduino_Demos/ESP32_QSPIFirmwareUpdater/Endianess.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: 2015 Arduino LLC
+//
+// SPDX-License-Identifier: GPL-2.1-or-later
 /*
   Endianess.ino - Network byte order conversion functions.
   Copyright (c) 2015 Arduino LLC.  All right reserved.