Ublox neo6m gps module doesn't fetch data

embed12 · May 8, 2022, 1:40am

Hi

I have been trying to interface ublox neo 6m gps module, for a long time now, with many tries without success

Details are,
I am using ARduino Mega 2560 board connected

vcc of gps to 5v of mega
gnd of gps to gnd of mega
rx of gps to 11 of mega
tx of gps to 10 of mega

And the code is full example code of tinygpsplus of mikal hart available in arduino library manager

#include <TinyGPSPlus.h>
#include <SoftwareSerial.h>
/*
   This sample code demonstrates the normal use of a TinyGPSPlus (TinyGPSPlus) 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).
*/
static const int RXPin = 10, TXPin = 11;
static const uint32_t GPSBaud = 4800;

// The TinyGPSPlus object
TinyGPSPlus gps;

// The serial connection to the GPS device
SoftwareSerial ss(RXPin, TXPin);

void setup()
{
  Serial.begin(115200);
  ss.begin(GPSBaud);

  Serial.println(F("FullExample.ino"));
  Serial.println(F("An extensive example of many interesting TinyGPSPlus features"));
  Serial.print(F("Testing TinyGPSPlus library v. ")); Serial.println(TinyGPSPlus::libraryVersion());
  Serial.println(F("by Mikal Hart"));
  Serial.println();
  Serial.println(F("Sats HDOP  Latitude   Longitude   Fix  Date       Time     Date Alt    Course Speed Card  Distance Course Card  Chars Sentences Checksum"));
  Serial.println(F("           (deg)      (deg)       Age                      Age  (m)    --- from GPS ----  ---- to London  ----  RX    RX        Fail"));
  Serial.println(F("----------------------------------------------------------------------------------------------------------------------------------------"));
}

void loop()
{
  static const double LONDON_LAT = 51.508131, LONDON_LON = -0.128002;

  printInt(gps.satellites.value(), gps.satellites.isValid(), 5);
  printFloat(gps.hdop.hdop(), gps.hdop.isValid(), 6, 1);
  printFloat(gps.location.lat(), gps.location.isValid(), 11, 6);
  printFloat(gps.location.lng(), gps.location.isValid(), 12, 6);
  printInt(gps.location.age(), gps.location.isValid(), 5);
  printDateTime(gps.date, gps.time);
  printFloat(gps.altitude.meters(), gps.altitude.isValid(), 7, 2);
  printFloat(gps.course.deg(), gps.course.isValid(), 7, 2);
  printFloat(gps.speed.kmph(), gps.speed.isValid(), 6, 2);
  printStr(gps.course.isValid() ? TinyGPSPlus::cardinal(gps.course.deg()) : "*** ", 6);

  unsigned long distanceKmToLondon =
    (unsigned long)TinyGPSPlus::distanceBetween(
      gps.location.lat(),
      gps.location.lng(),
      LONDON_LAT, 
      LONDON_LON) / 1000;
  printInt(distanceKmToLondon, gps.location.isValid(), 9);

  double courseToLondon =
    TinyGPSPlus::courseTo(
      gps.location.lat(),
      gps.location.lng(),
      LONDON_LAT, 
      LONDON_LON);

  printFloat(courseToLondon, gps.location.isValid(), 7, 2);

  const char *cardinalToLondon = TinyGPSPlus::cardinal(courseToLondon);

  printStr(gps.location.isValid() ? cardinalToLondon : "*** ", 6);

  printInt(gps.charsProcessed(), true, 6);
  printInt(gps.sentencesWithFix(), true, 10);
  printInt(gps.failedChecksum(), true, 9);
  Serial.println();
  
  smartDelay(1000);

  if (millis() > 5000 && gps.charsProcessed() < 10)
    Serial.println(F("No GPS data received: check wiring"));
}

// This custom version of delay() ensures that the gps object
// is being "fed".
static void smartDelay(unsigned long ms)
{
  unsigned long start = millis();
  do 
  {
    while (ss.available())
      gps.encode(ss.read());
  } while (millis() - start < ms);
}

static void printFloat(float val, bool valid, int len, int prec)
{
  if (!valid)
  {
    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 printInt(unsigned long val, bool valid, int len)
{
  char sz[32] = "*****************";
  if (valid)
    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 printDateTime(TinyGPSDate &d, TinyGPSTime &t)
{
  if (!d.isValid())
  {
    Serial.print(F("********** "));
  }
  else
  {
    char sz[32];
    sprintf(sz, "%02d/%02d/%02d ", d.month(), d.day(), d.year());
    Serial.print(sz);
  }
  
  if (!t.isValid())
  {
    Serial.print(F("******** "));
  }
  else
  {
    char sz[32];
    sprintf(sz, "%02d:%02d:%02d ", t.hour(), t.minute(), t.second());
    Serial.print(sz);
  }

  printInt(d.age(), d.isValid(), 5);
  smartDelay(0);
}

static void printStr(const char *str, int len)
{
  int slen = strlen(str);
  for (int i=0; i<len; ++i)
    Serial.print(i<slen ? str[i] : ' ');
  smartDelay(0);
}

and the output it shows is some thing like this..

07:00:31.810 -> FullExample.ino
07:00:31.810 -> An extensive example of many interesting TinyGPSPlus features
07:00:31.810 -> Testing TinyGPSPlus library v. 1.0.2
07:00:31.843 -> by Mikal Hart
07:00:31.843 -> 
07:00:31.843 -> Sats HDOP  Latitude   Longitude   Fix  Date       Time     Date Alt    Course Speed Card  Distance Course Card  Chars Sentences Checksum
07:00:31.843 ->            (deg)      (deg)       Age                      Age  (m)    --- from GPS ----  ---- to London  ----  RX    RX        Fail
07:00:31.843 -> ----------------------------------------------------------------------------------------------------------------------------------------
07:00:31.843 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   0     0         0        
07:00:32.941 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   116   0         0        
07:00:34.139 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   243   0         0        
07:00:35.204 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   324   0         0        
07:00:36.268 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   405   0         0        
07:00:37.366 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   486   0         0        
07:00:38.430 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   567   0         0        
07:00:39.527 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   648   0         0        
07:00:40.591 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   729   0         0        
07:00:41.688 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   810   0         0        
07:00:42.756 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   891   0         0        
07:00:43.856 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   972   0         0        
07:00:44.924 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   1053  0         0        
07:00:46.063 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   1219  0         0        
07:00:47.198 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   1300  0         0        
07:00:48.262 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   1381  0         0        
07:00:49.359 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   1462  0         1        
07:00:50.437 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   1543  0         1        
07:00:51.501 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   1624  0         1        
07:00:52.598 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   1705  0         1        
07:00:53.664 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   1786  0         1        
07:00:54.732 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   1867  0         1        
07:00:55.809 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   1952  0         1        
07:00:56.911 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   2033  0         1        
07:00:58.019 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   2181  0         1        
07:00:59.152 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   2276  0         1        
07:01:00.255 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   2357  0         1        
07:01:01.318 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   2442  0         1        
07:01:02.385 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   2523  0         1        
07:01:03.485 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   2604  0         1        
07:01:04.550 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   2685  0         1        
07:01:05.647 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   2770  0         1        
07:01:06.712 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   2851  0         1        
07:01:07.810 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   2932  0         1        
07:01:08.873 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   3013  0         1        
07:01:09.973 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   3135  0         1        
07:01:11.136 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   3256  0         1        
07:01:12.200 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   3337  0         1        
07:01:13.299 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   3422  0         1        
07:01:14.362 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   3503  0         1        
07:01:15.468 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   3584  0         1        
07:01:16.534 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   3665  0         1        
07:01:17.611 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   3746  0         1        
07:01:18.710 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   3827  0         1        
07:01:19.779 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   3908  0         1        
07:01:20.842 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   3989  0         1        
07:01:21.939 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   4102  0         1        
07:01:23.113 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   4236  0         1        
07:01:24.212 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   4317  0         1        
07:01:25.277 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   4398  0         1        
07:01:26.374 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   4479  0         1        
07:01:27.437 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   4560  0         1        
07:01:28.503 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   4641  0         1        
07:01:29.600 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   4722  0         1        
07:01:30.669 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   4803  0         1        
07:01:31.771 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   4888  0         1        
07:01:32.835 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   4969  0         1        
07:01:33.904 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   5050  0         1        
07:01:35.068 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   5212  0         2        
07:01:36.165 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   5293  0         2        
07:01:37.262 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   5374  0         2        
07:01:38.326 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   5455  0         2        
07:01:39.424 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   5540  0         2        
07:01:40.487 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   5621  0         2        
07:01:41.586 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   5702  0         2        
07:01:42.650 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   5783  0         2        
07:01:43.714 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   5864  0         2        
07:01:44.811 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   5945  0         2        
07:01:45.876 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   6026  0         2        
07:01:47.007 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   6169  0         2        
07:01:48.141 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   6273  0         2        
07:01:49.225 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   6354  0         2        
07:01:50.325 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   6435  0         2        
07:01:51.396 -> **** ***** ********** *********** **** ********** ******** **** ****** ****** ***** ***   ******** ****** ***   6516  0

Can anyone out here help me in this? Thank you

embed12 · May 8, 2022, 1:49am

Additional information since I am using mega, i have tried this code too

void setup()
{
Serial.begin(9600);                                    // set serial monitor rate to 9600 bps
Serial3.begin(4800);                                  // GPS    Serial setup
}
void loop()
{
  while (Serial3.available())                           // look for data from GPS module
  {
     char c = Serial3.read();                             // read in all available chars   
     Serial.print(c);                                            // for diagnostics
  }
}

but this code returns nothing, serial monitor is completely free of alphabets and numbers

groundFungus · May 8, 2022, 1:52am

Really? What happened to the other thread? Did I waste my time tying to help you?

This is a cross post. Cross posting is against the rules. Flagged.

system · November 4, 2022, 1:52am

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.

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Ublox neo6m gps module doesn't fetch data

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