
The MKDIR command's purpose is to create new folders on the SD card. MKDIR requires one argument that is the full path to the new folder. Nested folder names must be separated by slashes. A folder in the root directory does not need any slashes.
Name and path of new folder that should be created.
ERR_OK (0) if a new folder was created successfully.
ERR_FR_XX (13...25) file system error if anything's gone wrong while trying to create the folder.
MKDIR foo
Creates a new folder named "foo" in the root directory
MKDIR foo/bar
Creates a new folder named "bar" that resides in folder "foo"
This command only exists on devices that have some kind of mass storage (such as SD-Card or USB stick).