#include <TinyGPS++.h>

#define GPS_BAUDRATE    9600
#define RX2             16
#define TX2             17

TinyGPSPlus gps;

void setup() {
  Serial.begin(9600);
  Serial2.begin(GPS_BAUDRATE, SERIAL_8N1, RX2, TX2);
  Serial.println("NEO-6M GPS Module Simulation on ESP32");
}

void loop() {
  if(Serial2.available() > 0) {
    if(gps.encode(Serial2.read())) {
      // Location information
      Serial.print(F("Location:\t("));
      if(gps.location.isValid()) {
        Serial.print(F("Latitude: "));    Serial.print(gps.location.lat()); Serial.print(F(", "));
        Serial.print(F("Longitude: "));   Serial.print(gps.location.lng()); Serial.print(F(", "));
        if(gps.altitude.isValid())        Serial.print(gps.altitude.meters());
        else Serial.println(F("INVALID"));
      } else Serial.println(F("INVALID"));
      Serial.println(F(")"));
      // Speed information
      Serial.print(F("Speed:\t\t"));
      if(gps.speed.isValid())      {       Serial.print(gps.speed.kmph());   Serial.println(" km/h");}
      else   Serial.println(F("INVALID"));
      // Date & Time information
      Serial.print(F("GPS Date&Time:\t"));
      if(gps.date.isValid() && gps.time.isValid()) {
        Serial.print(gps.date.year());    Serial.print(F("-"));
        Serial.print(gps.date.month());   Serial.print(F("-"));
        Serial.print(gps.date.day());     Serial.print(F(" "));
        Serial.print(gps.time.hour());    Serial.print(F(":"));
        Serial.print(gps.time.minute());  Serial.print(F(":"));
        Serial.println(gps.time.second());
      } else Serial.println(F("INVALID"));
      Serial.println();    
    }
    // No GPS Data Exception
    if(millis() > 5000 && gps.charsProcessed() < 10)
      Serial.println(F("No GPS data received: check wiring")); 
  }
}