Emissor_GPS_XBee.ino

// EyeLink XBee Code
// changes 6/2/2017 
// Data rate changed (2 sec to 1 sec) 
// Rx & Tx changed

#include <Adafruit_GPS.h>
#include <SoftwareSerial.h>

// Connect the GPS Power pin to 5V
// Connect the GPS Ground pin to ground
// If using software serial:
//   Connect the GPS TX (transmit) pin to Digital 2
//   Connect the GPS RX (receive) pin to Digital 3
// 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
SoftwareSerial mySerial(2, 3);
Adafruit_GPS GPS(&mySerial);

// 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  false

void setup()  
{    
  Serial.begin(115200);
  delay(500);
  Serial.println("EyeLink Mission XBee Code!");
  
  GPS.begin(9600);
  
  // uncomment this line to turn on RMC (recommended minimum) and GGA (fix data) including altitude
  GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCGGA);
  // uncomment this line to turn on only the "minimum recommended" data
  //GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCONLY);
  // For parsing data, we don't suggest using anything but either RMC only or RMC+GGA since
  // the parser doesn't care about other sentences at this time
  
  // Set the update rate
  GPS.sendCommand(PMTK_SET_NMEA_UPDATE_1HZ);   // 1 Hz update rate
  // For the parsing code to work nicely and have time to sort thru the data, and
  // print it out we don't suggest using anything higher than 1 Hz

  // Request updates on antenna status, comment out to keep quiet
  GPS.sendCommand(PGCMD_ANTENNA);

  delay(1000);
  // Ask for firmware version
 mySerial.println(PMTK_Q_RELEASE);
}

uint32_t timer = millis();
void loop()                     // run over and over again
{
  char c = GPS.read();
  // if you want to debug, this is a good time to do it!
  if ((c) && (GPSECHO))
  //We have commented the following lane in order to simplify the reading on the Serial Port
    Serial.write(c); //comenté esta linea
    
  
  // if a sentence is received, we can check the checksum, parse it...
  if (GPS.newNMEAreceived()) {
    // a tricky thing here is if we print the NMEA sentence, or data
    // we end up not listening and catching other sentences! 
    // so be very wary if using OUTPUT_ALLDATA and trytng to print out data
    //Serial.println(GPS.lastNMEA());   // this also sets the newNMEAreceived() flag to false
  
    if (!GPS.parse(GPS.lastNMEA()))   // this also sets the newNMEAreceived() flag to false
      return;  // we can fail to parse a sentence in which case we should just wait for another
  }

  // if millis() or timer wraps around, we'll just reset it
  if (timer > millis())  timer = millis();

  // approximately every 1 seconds or so, print out the current stats
  if (millis() - timer > 1000) { 
    timer = millis(); // reset the timer
        
    if (GPS.fix == 0){
    Serial.println("Buscant GPS");
    }

    if (GPS.fix == 1) {
      Serial.print(GPS.hour, DEC); Serial.print(':');
      Serial.print(GPS.minute, DEC); Serial.print(':');
      Serial.print(GPS.seconds, DEC); Serial.print(',');
      //Serial.print("Location: ");
      Serial.print(GPS.latitudeDegrees, 4);
      Serial.print(","); 
      Serial.print(GPS.longitudeDegrees, 4);
      Serial.print(',');
      //Serial.print("Speed (knots): "); 
   //   Serial.print((GPS.speed)*0.5144444);
   //   Serial.print(',');
      //Serial.print("Altitude: ");
      Serial.println(GPS.altitude);
     

    }
  }
}