#include <SD.h>
#define pin_cs 4

File fileme,root;

void setup() {
  Serial.begin(9600);
  if (!SD.begin(pin_cs))
  {
    Serial.println("Mungkin ada masalah dengan memory card mas bro ");
    while(1);
  }
 buat_File();

 cekIsicard();
  
  // put your setup code here, to run once:

}

void loop() {
  int adc = analogRead(A0);
  isiFile(adc);
  
  delay(2000);
   bacaFile();
   delay(2000);

  // put your main code here, to run repeatedly:

}


void isiFile(int nilaiadc)
{
  fileme = SD.open("test.txt",FILE_WRITE);
  if(fileme)
  {
    fileme.println(nilaiadc);
    fileme.close();
  }
  else
  {
    Serial.println("Gagal mengisi file vin");
    while(1);
  }

}

void bacaFile()
{
   fileme = SD.open("test.txt");
  if(fileme)
  {
    while(fileme.available())
    {
    Serial.write(fileme.read());
    }
    fileme.close();
  }
  else
  {
    Serial.println("gagal membaca file vin");
    while(1);

  }
}

void cekIsicard()
{
  root = SD.open("/");
  while(true){

  File cekfile = root.openNextFile();
  if(!cekfile)
  {
    break;
  }
  Serial.print(cekfile.name());
  Serial.print(" ");
  Serial.println(cekfile.size());
  cekfile.close();

  }
}


void buat_File()
{
    fileme = SD.open("test.txt",FILE_WRITE);
  if(fileme)
  {
    fileme.println("Ini Tugas pembuatan data logger dengan SD Card di Arduino UNO (050_Kevin) ");
    fileme.close();
  }
  else
  {
    Serial.println("Gagal membuat file vin");
     while(1);
  }
}