Reference.FileOpenNextFile History
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November 05, 2011, at 07:07 PM
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Changed lines 51-52 from:
//Serial.println("**nomorefiles**");
break;
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Serial.println("**nomorefiles**");
November 02, 2011, at 08:59 AM
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November 02, 2011, at 08:56 AM
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file: an instance of the File class (returned by file.open()
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file: an instance of the File class that is a directory
November 02, 2011, at 08:50 AM
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SD.begin(10
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SD.begin(10);
November 02, 2011, at 08:48 AM
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(:sourceend:)
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November 02, 2011, at 08:47 AM
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Added lines 1-76:
SD : File class
openNextFile()
Reports the next file or folder in a directory.
Syntax
file.openNextFile()
Parameters
file: an instance of the File class (returned by file.open()
Returns
char : the next file or folder in the path
Example
(:source lang=arduino:)
- 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
//Serial.println("**nomorefiles**");
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);
}
}
} (:sourceend:)
(:sourceend:)
See Also
