#include "TinyGPSPlus.h"
#include "SoftwareSerial.h"
#include "HardwareSerial.h"

SoftwareSerial serial_connection (44, 43); // RX pin, TX pin
TinyGPSPlus gps; // GPS object
HardwareSerial GPS(1);

// change these to match your PCB:
const int GPS_RX_PIN = 44;   // ESP32 RX (goes to GPS TX)
const int GPS_TX_PIN = 43;   // ESP32 TX (goes to GPS RX), or -1 if not connected
static unsigned long lastReport = 0;

void setup() {
  Serial.begin(115200); // open serial monitor
  Serial.setTimeout(10);
  //serial_connection.begin(9600); // open communication to GPS

  GPS.begin(9600, SERIAL_8N1, GPS_RX_PIN, GPS_TX_PIN);
  Serial.println("GPS Start"); // sketch starting
}

void loop() {

  // while connection is available, encode GPS feedback
  while(GPS.available())
  {
    //gps.encode(serial_connection.read());
    char c = GPS.read();
    gps.encode(c);
    //Serial.write(c);  // should see NMEA sentences if wiring is good
  }

  if (millis() - lastReport > 2000) {
  lastReport = millis();

  Serial.print("Chars: ");       Serial.println(gps.charsProcessed());
  Serial.print("Sentences: ");   Serial.println(gps.sentencesWithFix());
  Serial.print("Failed: ");      Serial.println(gps.failedChecksum());

  Serial.print("Loc valid? ");   Serial.println(gps.location.isValid() ? "yes" : "no");
  Serial.print("Lat: ");         Serial.println(gps.location.lat(), 6);
  Serial.print("Lng: ");         Serial.println(gps.location.lng(), 6);
  }

  if (gps.location.isValid()) {
    // print full message when button is down
    Serial.println("Latitude:");
    Serial.println(gps.location.lat(), 6);

    Serial.println("Longitude");
    Serial.println(gps.location.lat(), 6);

    Serial.println("Altitude:");
    Serial.println(gps.location.lat(), 6);
  }

  else {
    Serial.println("GPS location invalid");
  }

  delay(5000);

}