 
 void loop() {
 }
+
+void parpadear(int times, int milliseconds){
+  for(int i=0; i<times; i++){
+    digitalWrite(ledPin, HIGH);
+    delay(milliseconds);
+    digitalWrite(ledPin, LOW);
+    delay(milliseconds);
+  }
+}
+

  // Create the file if it doesn't exist
  if (!create_if_not_exists(filename)) {
    Serial.println("Not enough space to create file " + String(filename));
    return;
  }

  // Open the file and write test data
  file = SerialFlash.open(filename);
  
  file.write(contents, strlen(contents) + 1);
  Serial.println("String \"" + String(contents) + "\" written to file " + String(filename));
  file.close();
  
  // Open the file
  SerialFlashFile ff = SerialFlash.open(filename);
  Serial.print("Opening file: ");

  uint32_t sz = 21;//ff.size();
  Serial.print("Size: "); 
  Serial.println(sz);
  parpadear (3,100);
  
  uint32_t pos = ff.position();

