No data from NEO 6M GPS when I combine the code with others

shidqi · March 24, 2022, 4:46am

So I want to make a program using GPS, relay, bluetooth modules and webserver with ESP32. I tried the code one by one and managed to display the data. but when I combine the code. GPS data (long, lat) is not showing in serial monitor.

The GPS code

#include <TinyGPS++.h> // library for GPS module
#include <SoftwareSerial.h>
#include <WiFi.h>
//#include <ESP8266WiFi.h>
TinyGPSPlus gps;  // The TinyGPS++ object
SoftwareSerial ss(17, 16); // The serial connection to the GPS device 4tx/5rx
const char* ssid = "RidwanSoleh"; //ssid of your wifi
const char* password = "ridwananaksoleh"; //password of your wifi
float latitude , longitude;
int year , month , date, hour , minute , second;
String date_str , time_str , lat_str , lng_str;
int pm;
WiFiServer server(80);

void setup()
{
  Serial.begin(115200);
  ss.begin(9600);
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password); //connecting to wifi
  while (WiFi.status() != WL_CONNECTED)// while wifi not connected
  {
    delay(500);
    Serial.print("."); //print "...."
  }
  Serial.println("");
  Serial.println("WiFi connected");
  server.begin();
  Serial.println("Server started");
  Serial.println(WiFi.localIP());  // Print the IP address
}

//95187266

void loop()
{
  while (ss.available() > 0) //while data is available
    if (gps.encode(ss.read())) //read gps data
    {
      if (gps.location.isValid()) //check whether gps location is valid
      {
        latitude = gps.location.lat();
        lat_str = String(latitude , 6); // latitude location is stored in a string
        longitude = gps.location.lng();
        lng_str = String(longitude , 6); //longitude location is stored in a string
      }
      if (gps.date.isValid()) //check whether gps date is valid
      {
        date_str = "";
        date = gps.date.day();
        month = gps.date.month();
        year = gps.date.year();
        if (date < 10)
          date_str = '0';
        date_str += String(date);// values of date,month and year are stored in a string
        date_str += " / ";

        if (month < 10)
          date_str += '0';
        date_str += String(month); // values of date,month and year are stored in a string
        date_str += " / ";
        if (year < 10)
          date_str += '0';
        date_str += String(year); // values of date,month and year are stored in a string
      }
      if (gps.time.isValid())  //check whether gps time is valid
      {
        time_str = "";
        hour = gps.time.hour();
        minute = gps.time.minute();
        second = gps.time.second();
        minute = (minute + 25); // converting to IST
        if (minute > 59)
        {
          minute = minute - 60;
          hour = hour + 1;
        }
        hour = (hour + 5) ;
        if (hour > 23)
          hour = hour - 24;   // converting to IST
        if (hour >= 12)  // checking whether AM or PM
          pm = 1;
        else
          pm = 0;
        hour = hour % 12;
        if (hour < 10)
          time_str = '0';
        time_str += String(hour); //values of hour,minute and time are stored in a string
        time_str += " : ";
        if (minute < 10)
          time_str += '0';
        time_str += String(minute); //values of hour,minute and time are stored in a string
        time_str += " : ";
        if (second < 10)
          time_str += '0';
        time_str += String(second); //values of hour,minute and time are stored in a string
        if (pm == 1)
          time_str += " PM ";
        else
          time_str += " AM ";
      }
    }

    Serial.print("Longitude2:");
    Serial.println(lng_str);
    Serial.print("Latitude:");
    Serial.println(lat_str);
 
 WiFiClient client = server.available(); // Check if a client has connected
  if (!client)
  {
    return;
  }

  // Prepare the response
  String b = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n <!DOCTYPE html> <html> <head> <title>GPS DATA</title> <style>";
  b += "a:link {background-color: YELLOW;text-decoration: none;}";
  b += "table, th, td </style> </head> <body> <h1  style=";
  b += "font-size:300%;";
  b += " ALIGN=CENTER> GPS DATA</h1>";
  b += "<p ALIGN=CENTER style=""font-size:150%;""";
  b += "> <b>Location Details</b></p> <table ALIGN=CENTER style=";
  b += "width:50%";
  b += "> <tr> <th>Latitude</th>";
  b += "<td ALIGN=CENTER >";
  b += lat_str;
  b += "</td> </tr> <tr> <th>Longitude</th> <td ALIGN=CENTER >";
  b += lng_str;
  b += "</td> </tr> <tr>  <th>Date</th> <td ALIGN=CENTER >";
  b += date_str;
  b += "</td></tr> <tr> <th>Time</th> <td ALIGN=CENTER >";
  b += time_str;
  b += "</td>  </tr> </table> ";
 
  b += "</body> </html>";

  client.print(b); // all the values are send to the webpage
  delay(100);
}

the combined code

#include <TinyGPS++.h> // library for GPS module
#include <SoftwareSerial.h>
#include <WiFi.h>
TinyGPSPlus gps;  // The TinyGPS++ object
SoftwareSerial ss(17, 16); // The serial connection to the GPS device 4tx/5rx 17rx 16tx
const char* ssid = "RidwanSoleh"; //ssid of your wifi
const char* password = "ridwananaksoleh"; //password of your wifi
float latitude , longitude;
int year , month , date, hour , minute , second;
String date_str , time_str , lat_str , lng_str;
int pm;
WiFiServer server(80);
// GPS
#include <AsyncTCP.h>
#include <ESPAsyncWebServer.h>
#define RELAY_NO    true
#define NUM_RELAYS  2
int relayGPIOs[NUM_RELAYS] = {4, 5,};
const char* PARAM_INPUT_1 = "relay";  
const char* PARAM_INPUT_2 = "state";

// relay
#include <BLEDevice.h> 
#define ADDRESS "fff:ff:22:2a:f2:fa"
#define RELAY_PIN 15
#define SCAN_INTERVAL 100 
#define TARGET_RSSI -100
#define MAX_MISSING_TIME 100
int hitung=0;
BLEScan* pBLEScan; 
uint32_t lastScanTime = 0;
boolean found = false;
uint32_t lastFoundTime = 0;
int rssi = 0;
//BT

const char index_html[] PROGMEM = R"rawliteral(
<!DOCTYPE HTML><html>
<head>
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <style>
    html {font-family: Arial; display: inline-block; text-align: center;}
    h2 {font-size: 3.0rem;}
    p {font-size: 3.0rem;}
    body {max-width: 600px; margin:0px auto; padding-bottom: 25px;}
    .switch {position: relative; display: inline-block; width: 120px; height: 68px} 
    .switch input {display: none}
    .slider {position: absolute; top: 0; left: 0; right: 0; bottom: 0; background-color: #ccc; border-radius: 34px}
    .slider:before {position: absolute; content: ""; height: 52px; width: 52px; left: 8px; bottom: 8px; background-color: #fff; -webkit-transition: .4s; transition: .4s; border-radius: 68px}
    input:checked+.slider {background-color: #2196F3}
    input:checked+.slider:before {-webkit-transform: translateX(52px); -ms-transform: translateX(52px); transform: translateX(52px)}
  </style>
</head>
<body>
  <h2>ESP Web Server</h2>
  %BUTTONPLACEHOLDER%
<script>function toggleCheckbox(element) {
  var xhr = new XMLHttpRequest();
  if(element.checked){ xhr.open("GET", "/update?relay="+element.id+"&state=1", true); }
  else { xhr.open("GET", "/update?relay="+element.id+"&state=0", true); }
  xhr.send();
}</script>
</body>
</html>
)rawliteral";

// Replaces placeholder with button section in your web page
String processor(const String& var){
  //Serial.println(var);
  if(var == "BUTTONPLACEHOLDER"){
    String buttons ="";
    for(int i=1; i<=NUM_RELAYS; i++){
      String relayStateValue = relayState(i);
      buttons+= "<h4>Relay #" + String(i) + " - GPIO " + relayGPIOs[i-1] + "</h4><label class=\"switch\"><input type=\"checkbox\" onchange=\"toggleCheckbox(this)\" id=\"" + String(i) + "\" "+ relayStateValue +"><span class=\"slider\"></span></label>";
    }
    return buttons;
  }
  return String();
}

String relayState(int numRelay){
  if(RELAY_NO){
    if(digitalRead(relayGPIOs[numRelay-1])){
      return "";
    }
    else {
      return "checked";
    }
  }
  else {
    if(digitalRead(relayGPIOs[numRelay-1])){
      return "checked";
    }
    else {
      return "";
    }
  }
  return "";
} // web relay

class MyAdvertisedDeviceCallbacks: public BLEAdvertisedDeviceCallbacks 
{ 
    void onResult(BLEAdvertisedDevice advertisedDevice) 
    { 
       
        Serial.print("Device found: ");      
        Serial.println(advertisedDevice.toString().c_str()); 
 
       
        if(advertisedDevice.getAddress().toString() == ADDRESS) 
        { 
            
            found = true; 
            advertisedDevice.getScan()->stop(); 
            rssi = advertisedDevice.getRSSI();
            Serial.println("RSSI: " + rssi);
        } 
    } 
}; //BT

void setup()
{
  Serial.begin(115200);
  ss.begin(9600);
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password); //connecting to wifi
  while (WiFi.status() != WL_CONNECTED)// while wifi not connected
  {
    delay(500);
    Serial.print("."); //print "...."
  }
  Serial.println("");
  Serial.println("WiFi connected");
  server.begin();
  Serial.println("Server started");
  Serial.println(WiFi.localIP());  // Print the IP address
  
  pinMode(RELAY_PIN, OUTPUT); 
  digitalWrite(RELAY_PIN, LOW); 
 
  
    BLEDevice::init(""); 
    pBLEScan = BLEDevice::getScan(); 
    pBLEScan->setAdvertisedDeviceCallbacks(new MyAdvertisedDeviceCallbacks()); 
    pBLEScan->setActiveScan(true); 
    
for(int i=1; i<=NUM_RELAYS; i++){
    pinMode(relayGPIOs[i-1], OUTPUT);
    if(RELAY_NO){
      digitalWrite(relayGPIOs[i-1], HIGH);
    }
    else{
      digitalWrite(relayGPIOs[i-1], LOW);
    }
  }
    
}

//95187266

void loop()
{
  while (ss.available() > 0) //while data is available
    if (gps.encode(ss.read())) //read gps data
    {
      if (gps.location.isValid()) //check whether gps location is valid
      {
        latitude = gps.location.lat();
        lat_str = String(latitude , 6); // latitude location is stored in a string
        longitude = gps.location.lng();
        lng_str = String(longitude , 6); //longitude location is stored in a string
      }
      if (gps.date.isValid()) //check whether gps date is valid
      {
        date_str = "";
        date = gps.date.day();
        month = gps.date.month();
        year = gps.date.year();
        if (date < 10)
          date_str = '0';
        date_str += String(date);// values of date,month and year are stored in a string
        date_str += " / ";

        if (month < 10)
          date_str += '0';
        date_str += String(month); // values of date,month and year are stored in a string
        date_str += " / ";
        if (year < 10)
          date_str += '0';
        date_str += String(year); // values of date,month and year are stored in a string
      }
      if (gps.time.isValid())  //check whether gps time is valid
      {
        time_str = "";
        hour = gps.time.hour();
        minute = gps.time.minute();
        second = gps.time.second();
        minute = (minute + 25); // converting to IST
        if (minute > 59)
        {
          minute = minute - 60;
          hour = hour + 1;
        }
        hour = (hour + 5) ;
        if (hour > 23)
          hour = hour - 24;   // converting to IST
        if (hour >= 12)  // checking whether AM or PM
          pm = 1;
        else
          pm = 0;
        hour = hour % 12;
        if (hour < 10)
          time_str = '0';
        time_str += String(hour); //values of hour,minute and time are stored in a string
        time_str += " : ";
        if (minute < 10)
          time_str += '0';
        time_str += String(minute); //values of hour,minute and time are stored in a string
        time_str += " : ";
        if (second < 10)
          time_str += '0';
        time_str += String(second); //values of hour,minute and time are stored in a string
        if (pm == 1)
          time_str += " PM ";
        else
          time_str += " AM ";
      }
    }

    Serial.print("Longitude2:");
    Serial.println(lng_str);
    Serial.print("Latitude:");
    Serial.println(lat_str);

    uint32_t now = millis(); 
 
    if(found){
        lastFoundTime = millis(); 
        found = false;
         
        if(rssi > TARGET_RSSI){ 
            hitung=5;
            digitalWrite(RELAY_PIN, HIGH);
            delay(0);
            
        }
        else{
            hitung-=1;
            if(hitung<0){
              hitung=0;
            }
            if(hitung==0){
            digitalWrite(RELAY_PIN, LOW);
            }
        }
    }
   
    else if(now - lastFoundTime > MAX_MISSING_TIME){
        digitalWrite(RELAY_PIN, LOW);  
    }
     
    if(now - lastScanTime > SCAN_INTERVAL){ 
       
        lastScanTime = now;
        pBLEScan->start(1);
    }
 
 WiFiClient client = server.available(); // Check if a client has connected
  if (!client)
  {
    return;
  }
}

pylon · March 24, 2022, 4:23pm

What does that mean? Does it freeze? Post the serial output you get!

shidqi · March 25, 2022, 1:32am

the data from GPS not showing

pylon · March 25, 2022, 4:46pm

Just to be sure: you run the above two codes on exactly the same unchanged hardware and the first one prints GPS data while the second one doesn't do that?

Have you tried to print the raw GPS data to check if you get any data on the emulated serial?

ariog · March 25, 2022, 5:09pm

i have tried code only gps module and it worked
-shidqi

pylon · March 25, 2022, 5:21pm

That means your problem is solved?

system · September 21, 2022, 5:21pm

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