tinygps_featherm0_tracker.ino

#include <TinyGPS++.h>
//#include <SoftwareSerial.h>
/*
   This sample code demonstrates how to use an array of TinyGPSCustom objects
   to monitor all the visible satellites.

   Satellite numbers, elevation, azimuth, and signal-to-noise ratio are not
   normally tracked by TinyGPS++, but by using TinyGPSCustom we get around this.

   The simple code also demonstrates how to use arrays of TinyGPSCustom objects,
   each monitoring a different field of the $GPGSV sentence.

   It requires the use of SoftwareSerial, and assumes that you have a
   4800-baud serial GPS device hooked up on pins 4(RX) and 3(TX).
*/
//static const int RXPin = 4, TXPin = 3;
static const uint32_t GPSBaud = 9600;

// The TinyGPS++ object
TinyGPSPlus gps;

// The serial connection to the GPS device
//SoftwareSerial ss(RXPin, TXPin);

void setup()
{
  Serial.begin(115200);
  //ss.begin(GPSBaud);
  Serial1.begin(GPSBaud);

  while (!Serial) ; 
 
}

double last_lon=0.;
double last_lat=0.;

void loop()
{
  // Dispatch incoming characters
  if (Serial1.available() > 0)
  {
    gps.encode(Serial1.read());
    if (gps.location.isValid())
    {
      last_lon=double(gps.location.lng());
      last_lat=double(gps.location.lat());
    } 
  }
 else { // grab last location values and send over radio
  Serial.print(F("(lat,lon): "));
  Serial.print(last_lat,6);
  Serial.print(F(","));
  Serial.println(last_lon,6);
  delay(1000);
 }
}