Arduino Function: SD.rewindDirectory

Description

This function will bring you back to the first file in the directory, used in conjunction with openNextFile().

Parameters

file: an instance of the File class.

Examples

#include <SD.h>

File root;

void setup()
{
Serial.begin(9600);
pinMode(10, OUTPUT);

SD.begin(10);

root = SD.open("/");

printDirectory(root, 0);

Serial.println("done!");
}

void loop()
{
// nothing happens after setup finishes.
}

void printDirectory(File dir, int numTabs) {
while(true) {

File entry = dir.openNextFile();
if (! entry) {
// no more files
// return to the first file in the directory
dir.rewindDirectory();
break;
}
for (uint8_t i=0; i<numTabs; i++) {
Serial.print('\t');
}
Serial.print(entry.name());
if (entry.isDirectory()) {
Serial.println("/");
printDirectory(entry, numTabs+1);
} else {
// files have sizes, directories do not
Serial.print("\t\t");
Serial.println(entry.size(), DEC);
}
}
}


Based on the reference originally written by Arduino Community,  wiring.org.co and  arduino.cc