/************************************************************************************
 *  Created By: Tauseef Ahmad
 *  Created On: 10 November, 2021
 *  
 *  YouTube Video: 
 *  My Channel: https://www.youtube.com/channel/UCOXYfOHgu-C-UfGyDcu5sYw/
 *  
 *  *********************************************************************************
 *  Preferences--> Aditional boards Manager URLs : 
 *  For ESP32:
 *  https://dl.espressif.com/dl/package_esp32_index.json
 *  
 *  *********************************************************************************
 *  Download Blynk Library (Version 1.0.1):
 *  https://github.com/blynkkk/blynk-library
 *  *********************************************************************************
 *  Download TinyGPS++ Library (Version 1.0.2b):
 *  https://github.com/mikalhart/TinyGPSPlus
 **********************************************************************************/


//------------------------------------------------------------------------------
// Template ID, Device Name and Auth Token are provided by the Blynk.Cloud
// See the Device Info tab, or Template settings
#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "TMPL6FKlP6QUm"
#define BLYNK_TEMPLATE_NAME "GPS System"
#define BLYNK_AUTH_TOKEN "BFQJDYy-ByTAsQHuNdAtizYXKa0K-Rih"
//------------------------------------------------------------------------------

char auth[] = "BFQJDYy-ByTAsQHuNdAtizYXKa0K-Rih";
// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "HONOR 20 Lite";
char pass[] = "1234567890";
//------------------------------------------------------------------------------
// Comment this out to disable prints and save space
#define BLYNK_PRINT Serial

//------------------------------------------------------------------------------
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

//------------------------------------------------------------------------------












#include <SoftwareSerial.h>
#define BLYNK_PRINT Serial

//Install the following Libraries
#include <TinyGPS++.h>

//GPS RX to D1 & GPS TX to D2 and Serial Connection
const int RXPin = 17, TXPin = 16;
const uint32_t GPSBaud = 9600; 
SoftwareSerial gps_module(RXPin, TXPin);

TinyGPSPlus gps; 
WidgetMap myMap(V0); //V0 - virtual pin for Map

BlynkTimer timer;

//Variable  to store the speed, no. of satellites, direction
float gps_speed;
float no_of_satellites;
String satellite_orientation;



//unsigned int move_index;         
unsigned int move_index = 1;      
  

void setup()
{
  Serial.begin(115200);
  Serial.println();
  gps_module.begin(GPSBaud);
  Blynk.begin(auth, ssid, pass);
  timer.setInterval(5000L, checkGPS); 
}

void checkGPS(){
  if (gps.charsProcessed() < 10)
  {
    Serial.println(F("No GPS detected: check wiring."));
      Blynk.virtualWrite(V0, "GPS ERROR");  
  }
}

void loop()
{
  while (gps_module.available() > 0) 
  {
    //displays information every time a new sentence is correctly encoded.
    if (gps.encode(gps_module.read()))
    displayInfo();
  }
  
  Blynk.run();
  timer.run();
}

void displayInfo()
{
  if (gps.location.isValid()) 
  {
    //Storing the Latitude. and Longitude
    float latitude = (gps.location.lat());
    float longitude = (gps.location.lng()); 
    
    //Send to Serial Monitor for Debugging
    Serial.print("LAT:  ");
    Serial.println(latitude, 6);  // float to x decimal places
    Serial.print("LONG: ");
    Serial.println(longitude, 6);
    
    Blynk.virtualWrite(V1, String(latitude, 6));   
    Blynk.virtualWrite(V2, String(longitude, 6));  
    Blynk.virtualWrite(V4, longitude, latitude);
    
    //get speed
    gps_speed = gps.speed.kmph();
    Blynk.virtualWrite(V3, gps_speed);

  }
  
  Serial.println();
}