GPS data not showing on my web server

Projects Programming
1

Hello, everyone. I'm working on a project with two systems, and my board is the ESP8266. The 1st system is the mq9 gas sensor, and the second is the ublox neo6mv2 gps. The gas sensor works fine, but the GPS web server is not displaying any data. Here's my code for it

#define sensor A0

#include <TinyGPS++.h>
#include <SoftwareSerial.h>
#include <ESP8266WiFi.h>


TinyGPSPlus gps;

SoftwareSerial ss(4, 5);

const char* ssid = "wifi";

const char* password = "wifipass";

float latitude , longitude;

int year , month , date, hour , minute , second;

String date_str , time_str , lat_str , lng_str;

int pm;

int green_led = 14;
int yellow_led = 12;
int red_led = 13;


WiFiServer server(80);

void setup()

{
  pinMode(sensor, INPUT);
  pinMode(green_led, OUTPUT);
  pinMode(yellow_led, OUTPUT);
  pinMode(red_led, OUTPUT);

  Serial.begin(9600);

  ss.begin(9600);

  Serial.println();

  Serial.print("Connecting to ");

  Serial.println(ssid);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED)

  {

    delay(500);

    Serial.print(".");

  }

  Serial.println("");

  Serial.println("WiFi connected");

  server.begin();

  Serial.println("Server started");

  Serial.println(WiFi.localIP());

}

void loop()

{
  int value = analogRead(sensor);

  Serial.print("Value: ");
  Serial.println(value);
  delay(1000);
  
    if (value < 199) {
    digitalWrite(green_led, LOW);
    digitalWrite(yellow_led, LOW);
    digitalWrite(red_led, LOW);
  } else if(value >= 200 && value <299) {
    digitalWrite(green_led, HIGH);
    digitalWrite(yellow_led, LOW);
    digitalWrite(red_led, LOW);

  } else if(value >= 300 && value < 499) {
    digitalWrite(green_led, LOW);
    digitalWrite(yellow_led, HIGH);
    digitalWrite(red_led, LOW);
  } else if (value > 500) {
    digitalWrite(green_led, LOW);
    digitalWrite(yellow_led, LOW);
    digitalWrite(red_led, HIGH);
  }

  while (ss.available() > 0)

    if (gps.encode(ss.read()))

    {

      if (gps.location.isValid())

      {

        latitude = gps.location.lat();

        lat_str = String(latitude , 6);

        longitude = gps.location.lng();

        lng_str = String(longitude , 6);

      }

      if (gps.date.isValid())

      {

        date_str = "";

        date = gps.date.day();

        month = gps.date.month();

        year = gps.date.year();

        if (date < 10)

          date_str = '0';

        date_str += String(date);

        date_str += " / ";

        if (month < 10)

          date_str += '0';

        date_str += String(month);

        date_str += " / ";

        if (year < 10)

          date_str += '0';

        date_str += String(year);

      }

      if (gps.time.isValid())

      {

        time_str = "";

        hour = gps.time.hour();

        minute = gps.time.minute();

        second = gps.time.second();

        minute = (minute + 30);

        if (minute > 59)

        {

          minute = minute - 60;

          hour = hour + 1;

        }

        hour = (hour + 5) ;

        if (hour > 23)

          hour = hour - 24;


        if (hour >= 12)

          pm = 1;

        else

          pm = 0;

        hour = hour % 12;


        if (hour < 10)

          time_str = '0';

        time_str += String(hour);

        time_str += " : ";

        if (minute < 10)

          time_str += '0';

        time_str += String(minute);

        time_str += " : ";

        if (second < 10)

          time_str += '0';

        time_str += String(second);

        if (pm == 1)

          time_str += " PM ";

        else

          time_str += " AM ";

      }

    }

  WiFiClient client = server.available();

  if (!client)

  {

    return;

  }


  String s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n <!DOCTYPE html> <html> <head> <title>GPS Interfacing with NodeMCU</title> <style>";

  s += "a:link {background-color: YELLOW;text-decoration: none;}";

  s += "table, th, td {border: 1px solid black;} </style> </head> <body> <h1  style=";

  s += "font-size:300%;";

  s += " ALIGN=CENTER> GPS Interfacing with NodeMCU</h1>";

  s += "<p ALIGN=CENTER style=""font-size:150%;""";

  s += "> <b>Location Details</b></p> <table ALIGN=CENTER style=";

  s += "width:50%";

  s += "> <tr> <th>Latitude</th>";

  s += "<td ALIGN=CENTER >";

  s += lat_str;

  s += "</td> </tr> <tr> <th>Longitude</th> <td ALIGN=CENTER >";

  s += lng_str;

  s += "</td> </tr> <tr>  <th>Date</th> <td ALIGN=CENTER >";

  s += date_str;

  s += "</td></tr> <tr> <th>Time</th> <td ALIGN=CENTER >";

  s += time_str;

  s += "</td>  </tr> </table> ";

 

  

  if (gps.location.isValid())

  {

     s += "<p align=center><a style=""color:RED;font-size:125%;"" href=""http://maps.google.com/maps?&z=15&mrt=yp&t=k&q=";

    s += lat_str;

    s += "+";

    s += lng_str;

    s += """ target=""_top"">Click here!</a> To check the location in Google maps.</p>";

  }

  s += "</body> </html> \n";

  client.print(s);

  delay(1000);

}

also, I have tried to use code solely for the GPS, and it displays the data on the web server. What seems to be the problem of it

Here's my output too

image
image1851×839 32.3 KB

2

why did you post a picture of text? it's just unreadable on my smartphone ... please, please never ever again post pictures of text... Not only they are not readable nor usable directly for copy&paste but they use up lots of storage and internet bandwidth which contributes to polluting the planet.

➜ do your part and do yourself a favour and please read How to get the best out of this forum and modify your post accordingly (including code tags and necessary documentation for your ask).

what is that image supposed to show?

3

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