Testing arduino gps - c++

Question

Me and and a friend of mine are building a robot which contains a gps for arduino. We built the following circuit, to test the gps:
We're trying the following code to test the gps:
#include <SoftwareSerial.h>
#include <TinyGPS.h>
long lat,lon; // create variable for latitude and longitude object
SoftwareSerial gpsSerial(2, 3); // create gps sensor connection
TinyGPS gps; // create gps object
void setup(){
Serial.begin(9600); // connect serial
gpsSerial.begin(4800); // connect gps sensor
}
void loop(){
Serial.print("test"); //I implemented this test
while(gpsSerial.available()){ // check for gps data
Serial.print("test2"); //I implemented this test
if(gps.encode(gpsSerial.read())){ // encode gps data
Serial.print("test3"); //I implemented this test
gps.get_position(&lat,&lon); // get latitude and longitude
// display position
Serial.print("Position: ");
Serial.print("lat: ");Serial.print(lat);Serial.print(" ");// print latitude
Serial.print("lon: ");Serial.println(lon); // print longitude
}
}
}
The thing is that the serial monitor does output test number 1, but doesn't output test number 2 and number 3. So we expected the circuit we built to fail. But we double checked the wires etc. Does anybody know what the problem could be?
Any inspiration/help is welcome,
Thanks,
Justin van Til

Answer 1

Try this code.
#include <SoftwareSerial.h>
#include <TinyGPS.h>
TinyGPS gps;
static void print_long(long val, long invalid, int len, int prec);
static void print_int(unsigned long val, unsigned long invalid, int len);
static void print_date(TinyGPS &gps);
static void print_str(const char *str, int len);
SoftwareSerial ss(3,4);
void setup()
{
Serial.begin(9600);
ss.begin(9600);
}
void loop()
{
long lat, lon;
int alt;
unsigned short sentences = 0, failed = 0;
gps.get_position(&lat, &lon);
alt=gps.altitude();
Serial.print("CURRENT LATITUDE & LONGITUDE:");
Serial.print(lat);
Serial.print(",");
Serial.println(lon);
Serial.print("CURRENT ALTITUDE:");
Serial.println(alt);
smartdelay(1000);
}
static void smartdelay(unsigned long ms)
{
unsigned long start = millis();
do
{
while (ss.available())
gps.encode(ss.read());
} while (millis() - start < ms);
}
static void print_long (long val, long invalid, int len, int prec)
{
if (val == invalid)
{
while (len-- > 1)
Serial.print('*');
Serial.print(' ');
}
else
{
Serial.print(val, prec);
int vi = abs((int)val);
int flen = prec + (val < 0.0 ? 2 : 1); // . and -
flen += vi >= 1000 ? 4 : vi >= 100 ? 3 : vi >= 10 ? 2 : 1;
for (int i=flen; i<len; ++i)
Serial.print(' ');
}
smartdelay(0);
}
static void print_int(unsigned long val, unsigned long invalid, int len)
{
char sz[32];
if (val == invalid)
strcpy(sz, "*******");
else
sprintf(sz, "%ld", val);
sz[len] = 0;
for (int i=strlen(sz); i<len; ++i)
sz[i] = ' ';
if (len > 0)
sz[len-1] = ' ';
Serial.print(sz);
smartdelay(0);
}
static void print_str(const char *str, int len)
{
int slen = strlen(str);
for (int i=0; i<len; ++i)
Serial.print(i<slen ? str[i] : ' ');
smartdelay(0);
}