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* Add fileCreation/getCreation create-time accessors For SDFS and LittleFS, enable a creation time accessor for files and Dir iterators, similar to the existing fileTime/getLastWrite calls. Remove spurious Dir::getLastWrite method (the proper and only documented way is really Dir::fileTime). Update json to point to new mklittlefs which copies the creation date of files to the image. Fixes #6992 * Remove malloc(), use stack vars for temp names LFS filenames are limited in size and generally very small. Use a stack variable instead of a dynamic allocation when performing full-path computations. * Replace "Creation" w/"CreationTime" in FS accessor Per review, `getCreation` -> `getCreationTime`, `fileCreation` -> `fileCreationTime`. The names `fileTime()` and `getLastWrite()` are inherited from ESP32 implementation and unchanged. * Add creation time to listfiles SD example * Enable SdFat's sateTime callback for timestamping SdFat requries the dateTimeCallback call (global for everything) to update dates and times on created files. Because the callback signature doesn't have space for us to provide any parameters, we cannot get the the File, Dir, or FS object's dateTimeCB member. Instead, just go with `time(null)` as the callback function which is right in all but the most esoteric cases. * Correct DOS year/month offset in dateTime callback * Fix docs to match new xxxCreationTime() API names Co-authored-by: Develo <deveyes@gmail.com>
81 lines
1.9 KiB
C++
81 lines
1.9 KiB
C++
/*
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Listfiles
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This example shows how print out the files in a
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directory on a SD card
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The circuit:
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SD card attached to SPI bus as follows:
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** MOSI - pin 11
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** MISO - pin 12
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** CLK - pin 13
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** CS - pin 4
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created Nov 2010
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by David A. Mellis
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modified 9 Apr 2012
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by Tom Igoe
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modified 2 Feb 2014
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by Scott Fitzgerald
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This example code is in the public domain.
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*/
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#include <SPI.h>
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#include <SD.h>
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File root;
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void setup() {
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// Open serial communications and wait for port to open:
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Serial.begin(115200);
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Serial.print("Initializing SD card...");
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if (!SD.begin(SS)) {
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Serial.println("initialization failed!");
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return;
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}
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Serial.println("initialization done.");
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root = SD.open("/");
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printDirectory(root, 0);
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Serial.println("done!");
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}
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void loop() {
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// nothing happens after setup finishes.
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}
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void printDirectory(File dir, int numTabs) {
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while (true) {
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File entry = dir.openNextFile();
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if (! entry) {
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// no more files
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break;
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}
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for (uint8_t i = 0; i < numTabs; i++) {
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Serial.print('\t');
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}
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Serial.print(entry.name());
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if (entry.isDirectory()) {
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Serial.println("/");
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printDirectory(entry, numTabs + 1);
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} else {
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// files have sizes, directories do not
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Serial.print("\t\t");
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Serial.print(entry.size(), DEC);
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time_t cr = entry.getCreationTime();
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time_t lw = entry.getLastWrite();
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struct tm * tmstruct = localtime(&cr);
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Serial.printf("\tCREATION: %d-%02d-%02d %02d:%02d:%02d", (tmstruct->tm_year) + 1900, (tmstruct->tm_mon) + 1, tmstruct->tm_mday, tmstruct->tm_hour, tmstruct->tm_min, tmstruct->tm_sec);
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tmstruct = localtime(&lw);
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Serial.printf("\tLAST WRITE: %d-%02d-%02d %02d:%02d:%02d\n", (tmstruct->tm_year) + 1900, (tmstruct->tm_mon) + 1, tmstruct->tm_mday, tmstruct->tm_hour, tmstruct->tm_min, tmstruct->tm_sec);
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}
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entry.close();
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}
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}
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