#include <SD.h>;
#define pin_cs 4

File Tugasbayu, root;



void setup() {
  Serial.begin(9600);
  if (!SD.begin(pin_cs))
  {
    Serial.println("mungkin ada masalah dengan memory card"); //info jika SD card tidak terconnect
    while (1);
  }
  
  buat_File();
  CekisiCard();



}

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

    delay(1000);
    bacaFile();
    delay(1000);
 
  // put your main code here, to run repeatedly:

}



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

void bacaFile()
{
   Tugasbayu = SD.open("test.txt");
  if(Tugasbayu)
  {
    while(Tugasbayu.available())
    {
      Serial.write(Tugasbayu.read());
    }
    Tugasbayu.close();
  }
  else
  {
    Serial.println("Gagal membaca file"); //info gagal membaca file
    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()
{

  Tugasbayu = SD.open("test.txt", FILE_WRITE);
  if (Tugasbayu)
  {
    Tugasbayu.println("file ini isinya adalah tugas bayu");
    Tugasbayu.close(); 
  }


  else
  {
    Serial.println("Gagal membuat file"); //info gagal membuat file
    while (1);
  }
}