Select the library modifying line '#define FAT_USE ...' at beginning of file FatLib.h
You need to install library SdFat (v 1.07) written by William Greiman
(https://github.com/greiman/SdFat)
FatFs is a generic filesystem module written by ChaN.
(http://elm-chan.org/fsw/ff/00index_e.html)
FatFs.h and FatFs.cpp wrap this module in order to use it with the Arduino IDE
It need more memory (flash and ram) than SdFat but allow non Ascii characters in files name.
SPIFFS is used to manage a file system stored on the flash memory of Esp8266 chip
(http://esp8266.github.io/Arduino/versions/2.0.0/doc/filesystem.html)
bool FAT_FS.begin( uint8_t csPin, SPISettings spiSettings )
int32_t FAT_FS.capacity()
int32_t FAT_FS.free()
bool FAT_FS.mkdir( char * path )
bool FAT_FS.remove( char * path )
bool FAT_FS.rename( char * oldName, char * newName )
bool FAT_FS.exists( char * path )
bool FAT_FS.isDir( char * path )
bool FAT_FS.timeStamp( char * path, uint16_t year, uint8_t month, uint8_t day, uint8_t hour, uint8_t minute, uint8_t second )
bool FAT_FS.getFileModTime( char * path, uint16_t * pdate, uint16_t * ptime )
FAT_DIR dir // declare directory object
bool dir.openDir( const char * dirPath )
bool dir.closeDir()
bool dir.nextFile()
char * dir.fileName()
uint32_t dir.fileSize()
bool dir.isDir()
uint16_t dir.fileModDate()
uint16_t dir.fileModTime()
To manage files, use class FAT_FILE instead of classes SdFile (SdFat), FileFs (FatFs), or File (SPIFFS)
FAT_FILE file // declare file object
bool file.open( char * fileName, uint8_t mode = O_READ )
bool file.close()
uint32_t file.write( void * buf, uint32_t lbuf )
int file.writeString( char * buf )
bool file.writeChar( char car )
uint32_t file.read( uint8_t * buf, uint32_t lbuf )
int16_t file.readString( char * buf, int lbuf )
char file.readChar()
bool file.seekSet( uint32_t cur )
uint32_t file.fileSize()
Values for mode parameter are: O_READ , O_WRITE , O_RDWR , O_CREAT , O_APPEND