Port to lora_isp4520 board

variants/lora_isp4520/variant.cpp

@@ -0,0 +1,52 @@
+/*
+  Copyright (c) 2014-2015 Arduino LLC.  All right reserved.
+  Copyright (c) 2016 Sandeep Mistry All right reserved.
+  Copyright (c) 2018, Adafruit Industries (adafruit.com)
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library 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 Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#include "variant.h"
+#include "nrf.h"
+#include "wiring_constants.h"
+#include "wiring_digital.h"
+
+const uint32_t g_ADigitalPinMap[] = {
+    25, // D0  SPI_MISO
+    24, // D1  SPI_NSS 
+    23, // D2  SPI_SCK
+    4,  // D3  VBAT
+    11, // D4  DIO1
+    27, // D5  BUSY
+    19, // D6  NRESET
+    12, // D7  BUTTON2
+    22, // D8  BUTTON3
+    26, // D9  SPI_MOSI
+    31, // D10 UART_RX
+    2,  // D11 UART_TX
+    10, // D12 LED1 GREEN
+    17, // D13 LED2 RED
+    9,  // D14 BUZZER
+    7,  // D15 BUTTON1   
+};
+
+#include <initializer_list>
+void initVariant()
+{
+  for (int i : {PIN_LED1, PIN_LED2}) {
+    pinMode(i, OUTPUT);
+    ledOff(i);
+  }
+}