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* Add time to filesystem API Support the ESP32 File::getLastWrite() call and setting the time on all filesystems automatically (assuming the system clock has been set properly and time(NULL) returns the proper time!). Adds Dir::fileTime() to get the time of a file being listed, similar to Dir::fileName() and Dir::fileSize(). Adds ::setTimeCallback(time_t (*cb)()) to File, Dir, and FS, allowing users to override the default timestamp on a per-file, directory, or filesystem basis. By default, a simple callback returning time(nullptr) is implemented. LittleFS uses the 't' attribute and should be backwards compatible. SD/SDFS work and include wrappers for obsolete SdFat timestamp callbacks using the MSDOS time. This PR does not update SPIFFS, due to compatability concerns and a possible massive rewrite which would make it possible to determine if an old-style ot metadata enabled FS is present at mount time. Includes an updated SD/listfiles and LittleFS_time example. Replaces #6315 * Add links to new mklittlefs w/timestamp support Include the update mklittlefs which generated 't' metadata on imported files. ../tools/sdk/lwip2/include/netif/lowpan6_opts.h * Add explicit note about timestamp being local time * Address review concerns Clean up some awkward object instantiations. Remove the _enableTime flag/setter from SPIFFS. Clean up the FSConfig constructors using C++ style init lists.
Arduino "class SD" shim wrapper
This is a simple wrapper class to replace the ancient Arduino SD.h access method for SD cards. It calls the underlying SDFS and the latest SdFat lib to do all the work, and is now compatible with the rest of the ESP8266 filesystem things.
-Earle F. Philhower, III earlephilhower@yahoo.com