void setup() {
  Serial.begin(115200);

  // Use UART2: RX=16, TX=17
  Serial2.begin(9600, SERIAL_8N1, 16, 17);

  Serial.println("ESP32 GPS Simulator Started...");
}

void loop() {
  while (Serial2.available()) {
    char c = Serial2.read();
    Serial.write(c); // print GPS NMEA sentence to Serial Monitor
  }
}