The filesystem uses 8.3 filenames format (SFN) by default.

Use paths starting with the path prefix passed to esp_vfs_register() (for example, '/sdcard/hello.txt'). For more information, see FatFs documentation.Ĭall the C standard library and POSIX API functions to perform such actions on files as open, read, write, erase, copy, etc. '/sdcard', '/spiflash')Ī variable which will receive the pointer to the FATFS structureĬall ff_diskio_register() to register the disk I/O driver for the drive number used in Step 1.Ĭall the FatFs function f_mount, and optionally f_fdisk, f_mkfs, to mount the filesystem using the same drive number which was passed to esp_vfs_fat_register(). Path prefix where to mount the filesystem (e.g.

Call esp_vfs_fat_register() to specify:.

Most applications use the following workflow when working with esp_vfs_fat_ functions: The function esp_vfs_fat_unregister_path() deletes the registration with VFS, and frees the FATFS structure. Subsequent operations on files starting with this prefix are forwarded to FatFs APIs.

The function esp_vfs_fat_register() allocates a FATFS structure and registers a given path prefix in VFS. The header file fatfs/vfs/esp_vfs_fat.h defines the functions for connecting FatFs and VFS.

Fat file system error