Map widget wrong location

Solved
1

Hi there,

I have a project with ESP32 + SIM800L + NEO6M. All is working well except when I go in Blynk app on my Android. It show my location at the right place but start the screen right in the ocean near Nigeria.
To see my position I must to zoom out and search for my real location.
Is there a way to show the right location at the start of the app instead of the point that show me in the ocean?

Here is my code:

#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "xxx"
#define BLYNK_DEVICE_NAME "Quickstart Template"
#define BLYNK_AUTH_TOKEN "xxx"

// Select your modem:
#define TINY_GSM_MODEM_SIM800
//#define TINY_GSM_MODEM_SIM900
//#define TINY_GSM_MODEM_M590
//#define TINY_GSM_MODEM_A6
//#define TINY_GSM_MODEM_A7
//#define TINY_GSM_MODEM_BG96
//#define TINY_GSM_MODEM_XBEE

// Default heartbeat interval for GSM is 60
// If you want override this value, uncomment and set this option:
#define BLYNK_HEARTBEAT 15

#include <TinyGPS++.h> //https://github.com/mikalhart/TinyGPSPlus
#include <TinyGsmClient.h> //https://github.com/vshymanskyy/TinyGSM
#include <BlynkSimpleTinyGSM.h> //https://github.com/blynkkk/blynk-library

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "xxx";

// Your GPRS credentials
// Leave empty, if missing user or pass
char apn[]  = "free";
char user[] = "";
char pass[] = "";


//sender phone number with country code.
//not gsm module phone number
//const String PHONE = "Enter_Your_Phone_Number";

//GSM Module Settings
//GSM Module RX pin to ESP32 2
//GSM Module TX pin to ESP32 4
#define rxPin 16
#define txPin 17
HardwareSerial sim800(1);
TinyGsm modem(sim800);

//GPS Module Settings
//GPS Module RX pin to ESP32 17
//GPS Module TX pin to ESP32 16
#define RXD2 3
#define TXD2 1
HardwareSerial neogps(2);
TinyGPSPlus gps;

WidgetMap myMap(V0);
BlynkTimer timer;
int pointIndex = 1;

void setup() {
   
  //Set Serial monitor baud rate
  Serial.begin(115200);
  Serial.println("esp32 serial initialize");
  delay(10);
  
  //Set GPS module baud rate
  neogps.begin(9600, SERIAL_8N1, RXD2, TXD2);
  Serial.println("neogps serial initialize");
  delay(10);

  //Set GSM module baud rate
  sim800.begin(9600, SERIAL_8N1, rxPin, txPin);
  Serial.println("SIM800L serial initialize");
  delay(3000); 
   
  // Restart takes quite some time
  // To skip it, call init() instead of restart()
  Serial.println("Initializing modem...");
  modem.restart();

  // Unlock your SIM card with a PIN
  //modem.simUnlock("1234");

  Blynk.begin(auth, modem, apn, user, pass);
  timer.setInterval(5000L, sendToBlynk);
}

void loop() {
  
  while(neogps.available())
  {
    if (gps.encode(neogps.read()))
    {
      sendToBlynk();
    }
  }

  Blynk.run();
  timer.run();
  
} //main loop ends

void sendToBlynk()
{

  if (gps.location.isValid() )
  {
    //get latitude and longitude
    float latitude = (gps.location.lat());
    float longitude = (gps.location.lng());
    //get speed
    float speed = gps.speed.kmph();
    //get number of satellites
    float satellites = gps.satellites.value();
    
    //Serial.print("Latitude:  ");
    //Serial.println(latitude, 6);
    //Serial.print("Longitude: ");
    //Serial.println(longitude, 6);
    //Serial.print("Speed: ");
    //Serial.println(speed, 6);    
    
    Blynk.virtualWrite(V1, String(latitude, 6));
    Blynk.virtualWrite(V2, String(longitude, 6));
    myMap.location(pointIndex, latitude, longitude, "GPS_Location");
    
    Blynk.virtualWrite(V3, speed);
    Blynk.virtualWrite(V4, satellites);

  }
}
2

EDIT:

I saw my position because I had my GPS turned ON on my smartphone… Now I turned OFF and I just see the PINS in OCEAN near NIGERIA

Any idea please??

3

Ok, I found the problem and then the solution.
It was my code:

myMap.location(pointIndex, latitude, longitude, "GPS_Location");

Changed it to:

Blynk.virtualWrite(V0, 1, longitude,latitude);

and problem solved.

Here is the entire code with little changes:

#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "xxx"
#define BLYNK_DEVICE_NAME "Quickstart Template"
#define BLYNK_AUTH_TOKEN "xxx"

// Select your modem:
#define TINY_GSM_MODEM_SIM800
//#define TINY_GSM_MODEM_SIM900
//#define TINY_GSM_MODEM_M590
//#define TINY_GSM_MODEM_A6
//#define TINY_GSM_MODEM_A7
//#define TINY_GSM_MODEM_BG96
//#define TINY_GSM_MODEM_XBEE

// Default heartbeat interval for GSM is 60
// If you want override this value, uncomment and set this option:
#define BLYNK_HEARTBEAT 15

#include <TinyGPS++.h> //https://github.com/mikalhart/TinyGPSPlus
#include <TinyGsmClient.h> //https://github.com/vshymanskyy/TinyGSM
#include <BlynkSimpleTinyGSM.h> //https://github.com/blynkkk/blynk-library


// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "xxx";

// Your GPRS credentials
// Leave empty, if missing user or pass
char apn[]  = "free";
char user[] = "";
char pass[] = "";


//sender phone number with country code.
//not gsm module phone number
//const String PHONE = "Enter_Your_Phone_Number";

//GSM Module Settings
//GSM Module RX pin to ESP32 2
//GSM Module TX pin to ESP32 4
#define rxPin 16
#define txPin 17
HardwareSerial sim800(1);
TinyGsm modem(sim800);

//GPS Module Settings
//GPS Module RX pin to ESP32 17
//GPS Module TX pin to ESP32 16
#define RXD2 3
#define TXD2 1
HardwareSerial neogps(2);
TinyGPSPlus gps;
BlynkTimer timer;

void setup() {
   
  //Set Serial monitor baud rate
  Serial.begin(115200);
  Serial.println("esp32 serial initialize");
  delay(10);
  
  //Set GPS module baud rate
  neogps.begin(9600, SERIAL_8N1, RXD2, TXD2);
  Serial.println("neogps serial initialize");
  delay(10);

  //Set GSM module baud rate
  sim800.begin(9600, SERIAL_8N1, rxPin, txPin);
  Serial.println("SIM800L serial initialize");
  delay(3000); 
   
  // Restart takes quite some time
  // To skip it, call init() instead of restart()
  Serial.println("Initializing modem...");
  modem.restart();

  // Unlock your SIM card with a PIN
  //modem.simUnlock("1234");

  Blynk.begin(auth, modem, apn, user, pass);
  timer.setInterval(5000L, sendToBlynk);
}


void loop() {
  
 while(neogps.available())
  {
    if (gps.encode(neogps.read()))
    {
      sendToBlynk();
    }
  }

  Blynk.run();
  timer.run();
  
} //main loop ends


void sendToBlynk()
{

  if (gps.location.isValid() )
  {
    //get latitude and longitude
    double latitude = gps.location.lat();
    double longitude = gps.location.lng();
    //get speed
    float speed = gps.speed.kmph();
    //get number of satellites
    float satellites = gps.satellites.value();
    //get altitude
    float altitude = gps.altitude.meters();
    
    //Serial.print("Latitude:  ");
    //Serial.println(latitude, 6);
    //Serial.print("Longitude: ");
    //Serial.println(longitude, 6);
    //Serial.print("Speed: ");
    //Serial.println(speed, 6);    

    Blynk.virtualWrite(V0, longitude, latitude);
    Blynk.virtualWrite(V1, String(latitude, 6));
    Blynk.virtualWrite(V2, String(longitude, 6));        
    Blynk.virtualWrite(V3, speed);
    Blynk.virtualWrite(V4, satellites);
    Blynk.virtualWrite(V5, altitude);

  }
}