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libraries/Adafruit_GPS_Library/examples/GPS_HardwareSerial_LOCUS_DumpBasic/GPS_HardwareSerial_LOCUS_DumpBasic.ino

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+// Test code for Adafruit GPS modules using MTK3329/MTK3339 driver
+//
+// This code turns on the LOCUS built-in datalogger. The datalogger
+// turns off when power is lost, so you MUST turn it on every time
+// you want to use it!
+//
+// Tested and works great with the Adafruit GPS FeatherWing
+// ------> https://www.adafruit.com/products/3133
+// or Flora GPS
+// ------> https://www.adafruit.com/products/1059
+// but also works with the shield, breakout
+// ------> https://www.adafruit.com/products/1272
+// ------> https://www.adafruit.com/products/746
+//
+// Pick one up today at the Adafruit electronics shop
+// and help support open source hardware & software! -ada
+
+
+#include <Adafruit_GPS.h>
+
+// 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);  // uncomment to have the sketch wait until Serial is ready
+
+  // connect at 115200 so we can read the GPS fast enough and echo without dropping chars
+  // also spit it out
+  Serial.begin(115200);
+  delay(1000);
+  Serial.println("Adafruit GPS logging data dump!");
+
+  // 9600 NMEA is the default baud rate for MTK - some use 4800
+  GPS.begin(9600);
+
+  GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_OFF);
+
+  while (GPSSerial.available())
+     GPSSerial.read();
+
+  delay(1000);
+  GPS.sendCommand("$PMTK622,1*29");
+  Serial.println("----------------------------------------------------");
+}
+
+uint32_t updateTime = 1000;
+
+void loop()                     // run over and over again
+{
+  if (Serial.available()) {
+    char c = Serial.read();
+    GPSSerial.write(c);
+  }
+  if (GPSSerial.available()) {
+    char c = GPSSerial.read();
+    Serial.write(c);
+  }
+}//loop