#include <SD.h>
#define pin_cs 4

File TugasAgus,root;

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




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

}

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

}

void bacaFile()
{
   TugasAgus = SD.open("test.txt");
  if(TugasAgus)
  {
    while(TugasAgus.available())
    {
    Serial.write(TugasAgus.read());
    }
    TugasAgus.close();
  }
  else
  {
    Serial.println("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()
{
    TugasAgus = SD.open("test.txt",FILE_WRITE);
  if(TugasAgus)
  {
    TugasAgus.println("ini adalah isi file tugas mikrokontroller sensor dan transduser ");
    TugasAgus.close();
  }
  else
  {
    Serial.println("Gagal membuat file");
     while(1);
  }
}