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FreeRTOS+FAT is still in the lab
FreeRTOS+FAT is already in use in commercial products and we encourage you to try it yourself. Be aware however that FreeRTOS+FAT was acquired by Real Time Engineers Ltd., and is still being documented and updated to ensure it meets our strict quality standards. Please use the forum for support, or contact us directly if you have a specific business interest.

ff_chdir()

[FreeRTOS+FAT Standard API Reference]

ff_stdio.h 
int ff_chdir( const char *pcDirectoryName );

Change the current working directory in the embedded FAT file system.

Parameters:

pcDirectoryName   A pointer to a standard null terminated C string that holds the name of the directory to make the current working directory. The string can include a relative path.

Returns:

If the current working directory was changed successfully then zero is returned.

If the current working directory could not be changed then -1 is returned and the task's errno may be set to indicate the reason. A task can obtain its errno value using the ff_errno() API function.

Example usage: 


void vExampleFunction( void )
{
    /* Create a sub directory called subfolder. */
    ff_mkdir( "subfolder" );

    /* Create a in subfolder called sub1. */
    ff_mkdir( "subfolder/sub1" );

    /* Make subfolder/sub1 the current working directory. */
    ff_chdir( "subfolder/sub1" );

    /* Make the route directory the current working directory again.  This could
    also have used ff_chdir( "/" ); */
    ff_chdir( "../.." );
}
Example use of the ff_chdir() API function to open or create a file



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