cheap-geo-tracker.ino

//License:GPLv3

#ifdef ARDUINO_ARCH_SAMD
#include <WiFi101.h>
#elif defined ARDUINO_ARCH_ESP8266
#include <ESP8266WiFi.h>
#elif defined ARDUINO_ARCH_ESP32
#include <WiFi.h>
#else
#error Wrong platform
#endif

#include <WifiLocation.h>

const char* googleApiKey = "";

WifiLocation location(googleApiKey);

#include <ESP8266HTTPClient.h>
HTTPClient http;

#include <WiFiClientSecure.h>
#include <TelegramBot.h>

// Initialize Telegram BOT
const char BotToken[] = "";
const char ChatID[] = ""; //use @my_id_bot to get this number

WiFiClientSecure net_ssl;
TelegramBot bot (BotToken, net_ssl);

char message[500];
char seznamurl[500];

void setup() {
  delay(100);
  Serial.begin(9600);
  // Serial.setDebugOutput(true);
  // Connect to WPA/WPA2 network
#ifdef ARDUINO_ARCH_ESP32
  WiFi.mode(WIFI_MODE_STA);
#endif
#ifdef ARDUINO_ARCH_ESP8266
  WiFi.mode(WIFI_STA);
#endif

}

void loop() {
  if (connectFreeWifi()) {



    location_t loc = location.getGeoFromWiFi();

    Serial.println("Location request data");
    Serial.println(location.getSurroundingWiFiJson());
    Serial.println("Latitude: " + String(loc.lat, 7));
    Serial.println("Longitude: " + String(loc.lon, 7));
    Serial.println("Accuracy: " + String(loc.accuracy));

    Serial.println("Reading WiFi SSID");

    String at = WiFi.SSID();

    Serial.println("Constructing Telegram message");

    sprintf(message, "%s%f%s%f +- %d @ %s", loc.lat<0?"S":"N", loc.lat<0?-loc.lat:loc.lat, loc.lon<0?"W":"E",loc.lon<0?-loc.lon:loc.lon, loc.accuracy, at.c_str());
    
    Serial.println("Constructing Telegram message - seznamurl");

    sprintf(seznamurl, "%s%s%f%s%f", "https://mapy.cz/zakladni?q=", loc.lat<0?"S":"N", loc.lat<0?-loc.lat:loc.lat, loc.lon<0?"W":"E",loc.lon<0?-loc.lon:loc.lon);

    Serial.println(message);
    Serial.println(seznamurl);


    bot.begin();
//    bot.sendMessage(ChatID, String(message) + " @ " + at);
    bot.sendMessage(ChatID, message);
    bot.sendMessage(ChatID, seznamurl);
//    bot.sendMessage(ChatID, googleurl);

    
  }
  delay(15000);
  WiFi.disconnect();
  delay(15000);
}


boolean connectFreeWifi() {
  // WiFi.scanNetworks will return the number of networks found
  int n = WiFi.scanNetworks();
  Serial.println("scan done");
  if (n == 0) {
    Serial.println("no networks found");
    return false;
  } else {
    Serial.print(n);
    Serial.println(" networks found");

    //find strongest

    int32_t bestRSSI = -1000;
    int best = -1;

    for (int i = 0; i < n; ++i) {
      // Print SSID and RSSI for each network found
      Serial.print(i + 1);
      Serial.print(": ");
      Serial.print(WiFi.SSID(i));
      Serial.print(" (");
      Serial.print(WiFi.RSSI(i));
      Serial.print(")");
      Serial.println((WiFi.encryptionType(i) == ENC_TYPE_NONE) ? " " : "*");

      if (WiFi.encryptionType(i) == ENC_TYPE_NONE && WiFi.RSSI(i) > bestRSSI ) {
        best = i;
        bestRSSI = WiFi.RSSI(i);
      }
      //delay(10);
    }
    if (best >= 0) {
      Serial.print("Connecting to: ");
      Serial.println(WiFi.SSID(best));
      WiFi.begin(WiFi.SSID(best).c_str(), "");
      int timer = 60;
      while (WiFi.status() != WL_CONNECTED && timer > 0) {
        delay(1000);
        Serial.print(".");
        timer--;
      }
      Serial.println();
      if (WiFi.status() == WL_CONNECTED) {
        return true;
      } else {
        return false;
      }
    } else {
      Serial.println("No free WiFi!");
      return false;
    }
  }
}

//test access to internet (check captive portal)
//    NCSI performs a DNS lookup on www.msftncsi.com, then requests http://www.msftncsi.com/ncsi.txt. This file is a plain-text file and contains only the text Microsoft NCSI.
//    NCSI sends a DNS lookup request for dns.msftncsi.com. This DNS address should resolve to 131.107.255.255. If the address does not match, then it is assumed that the internet connection is not functioning correctly.

boolean internetAccess() {

  http.begin("http://www.msftncsi.com/ncsi.txt");
  int httpCode = http.GET();

  // file found at server
  if (httpCode == HTTP_CODE_OK) {
    String payload = http.getString();
    //check payload content here
    if (payload == "Microsoft NCSI") {
      return true;
    } else {
      return false;
    }
  } else {
    return false;
  }
}

boolean sendMessage(String location) {
  //  bot.begin();
  //  bot.sendMessage(chat_id, location);
}