Hi,
I am pretty new to arduino and am trying to read GPS data from an adafruit ultimate gps board. I am using Tinygps code "test_with_gps_device" with an arduino uno.
As the code suggests, I have the TX from the gps going to pin 3 and Rx to pin 4. The code says include "software serial". I tried to load this code, but it replaces the tinygps code. I apologize for my ignorance, but do I need to have both codes present for this to work, and if so, how do I load both at the same time?
At present, when I run the tinygps code listed below, I get gibberish from the arduino serial monitor:
A,Ú*KJÙÛÛ???l?K $$À? lCô??¤Â:3?¤Ì$r !Ò,$?l?KÙÙÛÛ??$?,? ?,l þÐ? B ?? I ú? ?(Kô?(?$?l ú? lCô??? d ô?,?hK!Â??$?,?,$ ??? $ ô?,?,?,?, (?,le Ò(ae$?? ü?l ðXe$?@ ð¸ e?$e ÿØa IüÐ?J üe?I þ??$?,?,$ (?,lô8$?l üÐae
?,d À?(?$?l ú?,?l àØa ?hÀ? lCô?,?,?l% (ae?? üee? c ?Ð?,?(L? ??,?l àÐa ?Lü?lCô?,?, ê8 e
?dA è?e,Cô?,K à? e?Kü?,?,?,?, 8$?@ üÐa
I have tried different baud rates and have also tried switching RX and TX to make sure I had them correct
I would be very grateful for any suggestions on how to get the gps data into the arduino so I can read it. The code I am using in the uno is listed below. I
Here is the code:
#include <SoftwareSerial.h>
#include <TinyGPS.h>
/* This sample code demonstrates the normal use of a TinyGPS object.
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).
*/
TinyGPS gps;
SoftwareSerial ss(4, 3);
static void smartdelay(unsigned long ms);
static void print_float(float val, float 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);
void setup()
{
Serial.begin(115200);
Serial.print("Testing TinyGPS library v. "); Serial.println(TinyGPS::library_version());
Serial.println("by Mikal Hart");
Serial.println();
Serial.println("Sats HDOP Latitude Longitude Fix Date Time Date Alt Course Speed Card Distance Course Card Chars Sentences Checksum");
Serial.println(" (deg) (deg) Age Age (m) --- from GPS ---- ---- to London ---- RX RX Fail");
Serial.println("-------------------------------------------------------------------------------------------------------------------------------------");
ss.begin(4800);
}
void loop()
{
float flat, flon;
unsigned long age, date, time, chars = 0;
unsigned short sentences = 0, failed = 0;
static const double LONDON_LAT = 51.508131, LONDON_LON = -0.128002;
print_int(gps.satellites(), TinyGPS::GPS_INVALID_SATELLITES, 5);
print_int(gps.hdop(), TinyGPS::GPS_INVALID_HDOP, 5);
gps.f_get_position(&flat, &flon, &age);
print_float(flat, TinyGPS::GPS_INVALID_F_ANGLE, 10, 6);
print_float(flon, TinyGPS::GPS_INVALID_F_ANGLE, 11, 6);
print_int(age, TinyGPS::GPS_INVALID_AGE, 5);
print_date(gps);
print_float(gps.f_altitude(), TinyGPS::GPS_INVALID_F_ALTITUDE, 7, 2);
print_float(gps.f_course(), TinyGPS::GPS_INVALID_F_ANGLE, 7, 2);
print_float(gps.f_speed_kmph(), TinyGPS::GPS_INVALID_F_SPEED, 6, 2);
print_str(gps.f_course() == TinyGPS::GPS_INVALID_F_ANGLE ? "*** " : TinyGPS::cardinal(gps.f_course()), 6);
print_int(flat == TinyGPS::GPS_INVALID_F_ANGLE ? 0xFFFFFFFF : (unsigned long)TinyGPS::distance_between(flat, flon, LONDON_LAT, LONDON_LON) / 1000, 0xFFFFFFFF, 9);
print_float(flat == TinyGPS::GPS_INVALID_F_ANGLE ? TinyGPS::GPS_INVALID_F_ANGLE : TinyGPS::course_to(flat, flon, LONDON_LAT, LONDON_LON), TinyGPS::GPS_INVALID_F_ANGLE, 7, 2);
print_str(flat == TinyGPS::GPS_INVALID_F_ANGLE ? "*** " : TinyGPS::cardinal(TinyGPS::course_to(flat, flon, LONDON_LAT, LONDON_LON)), 6);
gps.stats(&chars, &sentences, &failed);
print_int(chars, 0xFFFFFFFF, 6);
print_int(sentences, 0xFFFFFFFF, 10);
print_int(failed, 0xFFFFFFFF, 9);
Serial.println();
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_float(float val, float 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 = ' ';
- if (len > 0)*
- sz[len-1] = ' ';*
- Serial.print(sz);*
- smartdelay(0);*
}
static void print_date(TinyGPS &gps)
{ - int year;*
- byte month, day, hour, minute, second, hundredths;*
- unsigned long age;*
- gps.crack_datetime(&year, &month, &day, &hour, &minute, &second, &hundredths, &age);*
- if (age == TinyGPS::GPS_INVALID_AGE)*
_ Serial.print("********** ******** ");_ - else*
- {*
- char sz[32];*
- sprintf(sz, "%02d/%02d/%02d %02d:%02d:%02d ",*
- month, day, year, hour, minute, second);*
- Serial.print(sz);*
- }*
- print_int(age, TinyGPS::GPS_INVALID_AGE, 5);*
- 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 : ' ');_
* smartdelay(0);*
}
