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+// Test code for Adafruit GPS modules using MTK3329/MTK3339 driver
+//
+// This code erases the LOCUS built-in datalogger storage
+//
+// Tested and works great with the Adafruit Ultimate GPS module
+// using MTK33x9 chipset
+//    ------> http://www.adafruit.com/products/746
+// Pick one up today at the Adafruit electronics shop
+// and help support open source hardware & software! -ada
+
+//This code is intended for use with Arduino Leonardo and other ATmega32U4-based Arduinos
+
+#include <Adafruit_GPS.h>
+
+// Connect the GPS Power pin to 5V
+// Connect the GPS Ground pin to ground
+// If using software serial (sketch example default):
+//   Connect the GPS TX (transmit) pin to Digital 8
+//   Connect the GPS RX (receive) pin to Digital 7
+// If using hardware serial:
+//   Connect the GPS TX (transmit) pin to Arduino RX1 (Digital 0)
+//   Connect the GPS RX (receive) pin to matching TX1 (Digital 1)
+
+// If using software serial, keep these lines enabled
+// (you can change the pin numbers to match your wiring):
+
+// what's the name of the hardware serial port?
+#define GPSSerial Serial1
+
+// Connect to the GPS on the hardware port
+Adafruit_GPS GPS(&GPSSerial);
+
+// Set GPSECHO to 'false' to turn off echoing the GPS data to the Serial console
+// Set to 'true' if you want to debug and listen to the raw GPS sentences
+#define GPSECHO  true
+
+
+void setup()
+{
+  while (!Serial) ;  //wait for serial port on Leonardo
+
+  // connect at 115200 so we can read the GPS fast enuf and
+  // also spit it out
+  Serial.begin(115200);
+  Serial.println("Adafruit GPS erase FLASH!");
+
+  // 9600 NMEA is the default baud rate for MTK
+  GPS.begin(9600);
+
+  GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_OFF);
+
+  Serial.println("This code will ERASE the data log stored in the FLASH - Permanently!");
+  Serial.print("Are you sure you want to do this? [Y/N]: ");
+  while (Serial.read() != 'Y')   delay(10);
+  Serial.println("\nERASING! UNPLUG YOUR ARDUINO WITHIN 5 SECONDS IF YOU DIDNT MEAN TO!");
+  delay(5000);
+  GPS.sendCommand(PMTK_LOCUS_ERASE_FLASH);
+  Serial.println("Erased");
+}
+
+void loop()                     // run over and over again
+{
+  if (GPSSerial.available()) {
+    char c = GPSSerial.read();
+    if (GPSECHO)
+      Serial.write(c);
+  }
+}