expected primary expression before '.' token

Projects Programming
1

(your code with code tags, the </> button on the menu, should look like this)

#include<TinyGPS++.h>
#include<SoftwareSerial.h>
TinyGPSPlus gps;
SoftwareSerial ss(4,3);

void setup() 
{
 
 Serial.begin(115200);
 ss.begin(4800);
 while (ss.available() > 0)
 gps.encode(ss.read());
 
}

void loop() 
{
 const double STR_LAT = 48.85826;
 const double STR_LNG = 2.294516;
 int lap=0;
 float latt;
 float lan;
 float spd;
 float alt;
 while (ss.available() > 0)
 gps.encode(ss.read());
if (gps.altitude.isUpdated())
 {
   if(gps.altitude.isValid())
   {
     alt=(gps.altitude.meters());
   Serial.println(alt);
   }
   
 }
if (gps.location.isUpdated())
 {
   if(gps.location.isValid())
   {
     Serial.print("LAT="); 
      latt=(gps.location.lat(), 6);
     Serial.println(latt);
     Serial.print("LNG=");
      lan=(gps.location.lng(), 6);
     Serial.println(lan);
   }
 }
 if ((latt==STR_LAT )&&(lan=STR_LNG))
 lap=lap+1;
 if (gps.speed.isUpdated())
 {
   if (gps.speed.isValid())
   {
      spd=gps.speed.kmph();
     Serial.println(spd);
   }
 }
 double distanceKm = (TinyGPSPlus.distanceBetween(gps.location.lat(),gps.location.lng(), STR_LAT, STR_LNG)) / 1000.0;
}

I am new to arduino and getting this error while trying to working with TinyGPS++ library. I think there is some error in the arguments of the function distanceKm but don't know what it is. Any help will be appritiated. Thank you.

2

Post the damn error message.
All of it.

And use code tags.

think there is some error in the arguments of the function distanceKm

distanceKm is a variable

3

I would re-arrange it like this:

#include<TinyGPS++.h>
#include<SoftwareSerial.h>
TinyGPSPlus gps;
SoftwareSerial ss(4, 3);
const double STR_LAT = 48.85826;  // moved all const's and variable here
const double STR_LNG = 2.294516;
int lap = 0;
float latt;
float lan;
float spd;
float alt;
double distanceKm;

void setup()
{
  Serial.begin(115200);
  ss.begin(4800);
}

void loop()
{
  while (ss.available() > 0) { // <<< missing an open brace { here
    gps.encode(ss.read());
    if (gps.altitude.isUpdated())
    {
      if (gps.altitude.isValid())
      {
        alt = (gps.altitude.meters());
        Serial.println(alt);
      }
    }
    if (gps.location.isUpdated())
    {
      if (gps.location.isValid())
      {
        Serial.print("LAT=");
        latt = (gps.location.lat(), 6);
        Serial.println(latt);
        Serial.print("LNG=");
        lan = (gps.location.lng(), 6);
        Serial.println(lan);
      }
    }
    if ((latt == STR_LAT ) && (lan = STR_LNG))
      lap = lap + 1;
    if (gps.speed.isUpdated())
    {
      if (gps.speed.isValid())
      {
        spd = gps.speed.kmph();
        Serial.println(spd);
      }
    }
    distanceKm = (TinyGPSPlus.distanceBetween(gps.location.lat(), gps.location.lng(), STR_LAT, STR_LNG)) / 1000.0;
  }// <<< closing brace } for the while
}

What are you doing with distanceKm besides calculating it?

I don't have all the library's so I can't speak as to any formatting/usage problem there might be with distanceKm.
Maybe it should be float instead of double?

4 
double distanceKm = (TinyGPSPlus.distanceBetween(gps.location.lat(), gps.location.lng(), STR_LAT, STR_LNG)) / 1000.0;

'TinyGPSPlus' is an object CLASS, not an object INSTANCE. You are trying to call a CLASS STATIC function (one belonging to the class and not any particular instance) so the syntax is:

TinyGPSPlus::distanceBetween();

not

TinyGPSPlus.distanceBetween();
5

ArnavPawarAA:
Please post the photo of the error message, so we can identify which line has the error.

NO!
Post the text of the error message.

6

In case anyone wanted to see the full error message:

/Users/john/Documents/Arduino/sketch_jun07a/sketch_jun07a.ino: In function 'void loop()':
sketch_jun07a:59:35: error: expected primary-expression before '.' token
   double distanceKm = (TinyGPSPlus.distanceBetween(gps.location.lat(), gps.location.lng(), STR_LAT, STR_LNG)) / 1000.0;
                                   ^
7

Thanks for that - something the OP could've done six hours ago.
Ho-hum
Can this be marked "solved" now?