 #include <SoftwareSerial.h>
 #include <SD.h>
 
-#include "TinyGPS++.h"
-#include "DHT.h"
-
 #define NODE_ID 1 //The network id of the present device
 
 #define DEBUG false // Set true if 

  
  while (data_file.available()) {
    if(!start_connection()){
      Serial.println(__LINE__);
      break;
    }
    String a;
    int i = 0;  
    start_message();
    while (data_file.available() and i < 30) {      
      i++;
      a = data_file.readStringUntil('\n');
      wifiSerial.print(a + "\n");

                                            string_3, string_4, string_5
                                           };

char buffer[40];
SoftwareSerial wifiSerial(WIFI_RX, WIFI_TX);
String filename("log.txt");
unsigned long filesize;

void start_file() {
  if (SD.begin(SD_CHIP_SELECT)) {
    SD.remove(filename);
    File data_file = SD.open(filename, FILE_WRITE);
    
    for (int i = 0; i < 200; i ++) {
      data_file.print(String(i) + ",aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n");
    }
    data_file.close();
    data_file = SD.open(filename, FILE_WRITE);
    filesize = data_file.size();
    Serial.println("File size = " + String(filesize) + "bytes");
  }
}


void start_message() {
