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

#define CS_PIN 13
#define MISO_PIN 19
#define SCK_PIN 18
#define MOSI_PIN 13

File root;


void setup(){
  Serial.begin(9600);
  SPI.begin(SCK_PIN, MISO_PIN, MOSI_PIN, CS_PIN);
  SD.begin(CS_PIN);

  //root = SD.open("/");
  File myFile = SD.open("test.txt", FILE_WRITE);

  if(!SD.begin(CS_PIN)){
    Serial.println("initialization failed!");
  }
  else {}
  
  if (myFile) {
	  Serial.print("Writing to test.txt...");
	  myFile.println("testing 1, 2, 3.");
	  // close the file:
	  myFile.close();
	  Serial.println("done.");
	} else {
	  // if the file didn't open, print an error:
	  Serial.println("error opening test.txt");
	}

  myFile = SD.open("test.txt");


  if (myFile) {
    Serial.println("test.txt:");

    // read from the file until there's nothing else in it:
    while (myFile.available()) {
      Serial.write(myFile.read());
    }
    // close the file:
    myFile.close();
  } else {
    // if the file didn't open, print an error:
    Serial.println("error opening test.txt");
  }
  myFile.println("testing 1, 2, 3.");
}


void loop(){
}