Neo-6m GPS module testing code- "No GPS data received: check wiring" error problem

Neo-6m GPS module testing code- "No GPS data received: check wiring" error problem. solutions

1. Do not short circuit Antenna to pins

2. Test in open Sky

3. Battery may low, power it to recharge.

4. 5V power is best

5. Patience while connecting wait 2 min 5min atleast.

6. TinyGPSplus library link- https://github.com/mikalhart/TinyGPSPlus/tree/master

#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 = 4, TXPin = 3;

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);

}