I'm trying to figure out how to get a GPS shield to work. It's my first time actually using a shield but so far I haven't been able to acquire any data from the GPS shield. I'm currently using a Mega 2560 board with a NEO-6M GPS Shield. Currently I'm not sure what could be wrong. Did I forget to do something or did I configure something wrong on the shield itself? I've checked the code and it should be fine. The RX and TX ports are 3 & 4 and are set that way in the code as well.
Any help would be most appreciated. See attached image for details on the setup.
Source Code:
/*********************
*10 to GPS Module TX*
*09 to GPS Module RX*
*********************/
#include <SoftwareSerial.h>
#include <TinyGPS.h>
SoftwareSerial mySerial(3, 4);
TinyGPS gps;
void gpsdump(TinyGPS &gps);
void printFloat(double f, int digits = 2);
long start = 0;
void setup()
{
// Oploen serial communications and wait for port to open:
Serial.begin(9600);
// set the data rate for the SoftwareSerial port
mySerial.begin(9600);
Serial.println("uBlox Neo 6M");
Serial.print("Testing TinyGPS library v. "); Serial.println(TinyGPS::library_version());
Serial.println("by Mikal Hart");
Serial.println();
start = millis();
}
void loop()
{
bool newdata = false;
// Every 5 seconds we print an update
if (millis() - start > 5000)
{
start = millis();
Serial.print("mySerial: ");
Serial.println(mySerial.available());
if (mySerial.available())
{
char c = mySerial.read();
Serial.print(c); // uncomment to see raw GPS data
if (gps.encode(c))
{
newdata = true;
}
}
}
if (newdata)
{
Serial.println("Acquired Data");
Serial.println("-------------");
gpsdump(gps);
Serial.println("-------------");
Serial.println();
}
}
void gpsdump(TinyGPS &gps)
{
long lat, lon;
float flat, flon;
unsigned long age, date, time, chars;
int year;
byte month, day, hour, minute, second, hundredths;
unsigned short sentences, failed;
gps.get_position(&lat, &lon, &age);
Serial.print("Lat/Long(10^-5 deg): "); Serial.print(lat); Serial.print(", "); Serial.print(lon);
Serial.print(" Fix age: "); Serial.print(age); Serial.println("ms.");
// On Arduino, GPS characters may be lost during lengthy Serial.print()
// On Teensy, Serial prints to USB, which has large output buffering and
// runs very fast, so it's not necessary to worry about missing 4800
// baud GPS characters.
gps.f_get_position(&flat, &flon, &age);
Serial.print("Lat/Long(float): "); printFloat(flat, 5); Serial.print(", "); printFloat(flon, 5);
Serial.print(" Fix age: "); Serial.print(age); Serial.println("ms.");
gps.get_datetime(&date, &time, &age);
Serial.print("Date(ddmmyy): "); Serial.print(date); Serial.print(" Time(hhmmsscc): ");
Serial.print(time);
Serial.print(" Fix age: "); Serial.print(age); Serial.println("ms.");
gps.crack_datetime(&year, &month, &day, &hour, &minute, &second, &hundredths, &age);
Serial.print("Date: "); Serial.print(static_cast<int>(month)); Serial.print("/");
Serial.print(static_cast<int>(day)); Serial.print("/"); Serial.print(year);
Serial.print(" Time: "); Serial.print(static_cast<int>(hour+8)); Serial.print(":"); //Serial.print("UTC +08:00 Malaysia");
Serial.print(static_cast<int>(minute)); Serial.print(":"); Serial.print(static_cast<int>(second));
Serial.print("."); Serial.print(static_cast<int>(hundredths)); Serial.print(" UTC +08:00 Malaysia");
Serial.print(" Fix age: "); Serial.print(age); Serial.println("ms.");
Serial.print("Alt(cm): "); Serial.print(gps.altitude()); Serial.print(" Course(10^-2 deg): ");
Serial.print(gps.course()); Serial.print(" Speed(10^-2 knots): "); Serial.println(gps.speed());
Serial.print("Alt(float): "); printFloat(gps.f_altitude()); Serial.print(" Course(float): ");
printFloat(gps.f_course()); Serial.println();
Serial.print("Speed(knots): "); printFloat(gps.f_speed_knots()); Serial.print(" (mph): ");
printFloat(gps.f_speed_mph());
Serial.print(" (mps): "); printFloat(gps.f_speed_mps()); Serial.print(" (kmph): ");
printFloat(gps.f_speed_kmph()); Serial.println();
gps.stats(&chars, &sentences, &failed);
Serial.print("Stats: characters: "); Serial.print(chars); Serial.print(" sentences: ");
Serial.print(sentences); Serial.print(" failed checksum: "); Serial.println(failed);
}
void printFloat(double number, int digits)
{
// Handle negative numbers
if (number < 0.0)
{
Serial.print('-');
number = -number;
}
// Round correctly so that print(1.999, 2) prints as "2.00"
double rounding = 0.5;
for (uint8_t i=0; i<digits; ++i)
rounding /= 10.0;
number += rounding;
// Extract the integer part of the number and print it
unsigned long int_part = (unsigned long)number;
double remainder = number - (double)int_part;
Serial.print(int_part);
// Print the decimal point, but only if there are digits beyond
if (digits > 0)
Serial.print(".");
// Extract digits from the remainder one at a time
while (digits-- > 0)
{
remainder *= 10.0;
int toPrint = int(remainder);
Serial.print(toPrint);
remainder -= toPrint;
}
}
