#include <SD.h>
#include <SPI.h>

File test;

int pinCS = 10;

void setup() {

  Serial.begin(9600);
  //pinMode(pinCS, OUTPUT);
  SD.begin(pinCS);

  // SD Card Initialization
  if (SD.begin())
  {
    Serial.println("SD card is ready to use.");
  } else
  {
    Serial.println("SD card initialization failed");
    return;
  }

  // Create/Open file
  test = SD.open("test.txt", FILE_WRITE);

  // if the file opened okay, write to it:
  if (test) {
    Serial.println("Writing to file...");
    // Write to file
    test.println("Testing text 1, 2 ,3...");
    test.close(); // close the file
    Serial.println("Done.");
  }
  // if the file didn't open, print an error:
  else {
    Serial.println("error opening test.txt");
  }
  // Reading the file
  test = SD.open("test.txt");
  if (test) {
    Serial.println("Read:");
    // Reading the whole file
    while (test.available()) {
      Serial.write(test.read());
   }
    test.close();
  }
  else {
    Serial.println("error opening test.txt");
  }



}

void loop() {
  // put your main code here, to run repeatedly:

}