Add firmware updater sketch

Author: sandeepmistry

examples/Tools/WiFi1010FirmwareUpdate/WiFi1010FirmwareUpdate.ino

@@ -0,0 +1,51 @@
+/*
+  WiFi1010FirmwareUpdater - Firmware Updater for the 
+  Arduino MKR WiFi101, Arduino MKR Vidor 4000, and Arduino UNO WiFi Rev.2.
+  
+  Copyright (C) 2018  Arduino AG (http://www.arduino.cc/)
+
+  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
+*/
+
+unsigned long baud = 115200;
+
+void setup() {
+  SerialUSB.begin(baud);
+  SerialNina.begin(baud);
+  
+  pinMode(NINA_GPIO0, OUTPUT);
+  pinMode(NINA_RESETN, OUTPUT);
+}
+
+void loop() {
+  digitalWrite(NINA_RESETN, SerialUSB.rts());
+  digitalWrite(NINA_GPIO0, (SerialUSB.dtr() == 0) ? HIGH : LOW);
+
+  while (SerialUSB.available()) {
+    uint8_t c = SerialUSB.read();
+    SerialNina.write(c);
+  }
+
+  while (SerialNina.available()) {
+    uint8_t c = SerialNina.read();
+    SerialUSB.write(c);
+  }
+
+  // check if the USB virtual serial wants a new baud rate
+  if (SerialUSB.baud() != baud) {
+    baud = SerialUSB.baud();
+    SerialNina.begin(baud);
+  }
+}