XBee printout, void setup() - printing

Question

I'm having trouble with my XBee's printing out to the monitor a simple statement, within the void setup(), as shown in my program below.
It prints the GPS and various sensor data, but it skips the whole introductory sentences. Whenever I open the arduino serial monitor, with the board plugged into my computer, it works fine.
Any suggestions? I'm at a lost!
Thanks :)
// Temperature Sensor data, Air Quality, and GPS data update XBEE
//CSV format for user interpretation
//Last updated 11/5/14
//Amy Laguna
#include <Adafruit_GPS.h>
#include <math.h>
#include <SoftwareSerial.h>
SoftwareSerial XBee(2, 3);
SoftwareSerial mySerial(8, 7);
//Read temperature sensor on A1
int tempPin = 1;
//Read CO sensor on A0
int coPin = 0;
//Read Oxygen sensor on A2
int opin = 2;
//GPS setup
Adafruit_GPS GPS(&mySerial);
//Use to debug
//SET to 'fale' to turn off echoing the GPS data to Serial
//Set to 'true' to debug and listen to raw GPS data
#define GPSECHO false
// this keeps track of whether we're using the interrupt
boolean usingInterrupt = false;
void useInterrupt(boolean);
void setup()
{
// connect at 115200 so we can read the GPS fast enough and echo without dropping chars
XBee.begin(115200);
Serial.begin(115200);
delay(5000);
XBee.println("Vehicle GPS, Temperature, and Air Quality Data!");
delay(2000);
XBee.println("Note: Elevation in Pensacola Florida: ~ 31 m (102 ft)");
XBee.println();
XBee.println("\n Date: Time: Fix: Location: Speed (mph): Elevation: CO: O2: Temperature: ");
// 9600 NMEA is the default baud rate for Adafruit MTK GPS's
GPS.begin(9600);
// RMC (recommended minimum) and GGA (fix data) including altitude
GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCGGA);
// 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
useInterrupt(true);
delay(1500);
}
// Interrupt is called once a millisecond, looks for any new GPS data, and stores it
SIGNAL(TIMER0_COMPA_vect) {
char c = GPS.read();
// if you want to debug, this is a good time to do it!
#ifdef UDR0
if (GPSECHO)
if (c) UDR0 = c;
#endif
}
void useInterrupt(boolean v) {
if (v) {
// Timer0 is already used for millis() - we'll just interrupt somewhere
// in the middle and call the "Compare A" function above
OCR0A = 0xAF;
TIMSK0 |= _BV(OCIE0A);
usingInterrupt = true;
} else {
// do not call the interrupt function COMPA anymore
TIMSK0 &= ~_BV(OCIE0A);
usingInterrupt = false;
}
}
uint32_t timer = millis();
void loop() // run over and over again
{
if (! usingInterrupt) {
// read data from the GPS in the 'main loop'
char c = GPS.read();
// if you want to debug, this is a good time to do it!
if (GPSECHO)
if (c) XBee.print(c);
}
// if a sentence is received, we can check the checksum, parse it...
if (GPS.newNMEAreceived()) {
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 2 seconds or so, print out the current stats
if (millis() - timer > 2000) {
timer = millis(); // reset the timer
PrintGPS(); //Print GPS readings
PrintAirQuality(); //Print CO and Temperature readings
}
}
void PrintGPS()
{
//Print Date, Time, Fix
XBee.print("\n");
XBee.print(GPS.month, DEC); XBee.print('/');
XBee.print(GPS.day, DEC); XBee.print("/20");
XBee.print(GPS.year, DEC);
XBee.print(" , ");
XBee.print(GPS.hour, DEC); XBee.print(':');
XBee.print(GPS.minute, DEC); XBee.print(':');
XBee.print(GPS.seconds, DEC);
}

Answer 1

Maybe try a longer delay before the XBee.println() statements. If the radio modules haven't associated yet, they won't be ready for you to start sending data through them.
Alternatively, wait until the first call to PrintGPS() and send it then:
void PrintGPS()
{
static int first_time = 1;
if (first_time) {
print_headers();
first_time = 0;
}
//Print Date, Time, Fix
...