The host provides different functions for creating a new file, or open for write an existing file. The following is a list of open file methods.

1. Open-Create-Write: By default, if the file does not exist, the device creates a new file and opens it for write; otherwise the device opens the file for write.

   Example:

   _i32              FileHdl;
   unsigned char     DeviceFileName[180];
   _u32              MaxSize, MasterToken;
   FileHdl =  sl_FsOpen(unsigned char *)DeviceFileName,
   SL_FS_CREATE|SL_FS_CREATE_SECURE |SL_FS_OVERWRITE |
   SL_FS_CREATE_NOSIGNATURE | SL_FS_CREATE_MAX_SIZE( MaxSize ),
   &MasterToken);
   if(FileHdl < 0 )
   {
     /*error */
   }

2. Open-Create: Creates a new file; the open function returns an error if a file with the same name already exists.

   Example:

   _i32              FileHdl;
   unsigned char      DeviceFileName[180];
   _u32               MaxSize, MasterToken;
   FileHdl =  sl_FsOpen(unsigned char *)DeviceFileName,
                  SL_FS_CREATE|SL_FS_CREATE_SECURE | 
                  SL_FS_CREATE_NOSIGNATURE | SL_FS_CREATE_MAX_SIZE( MaxSize ),
                  &MasterToken);
   if(FileHdl < 0 )
   {
       /*error */
   }
   

3. Open-Write: Opens an existing file for write; the open function returns an error if the file does not exist.

   Example:

   _i32              FileHdl;
   unsigned char    DeviceFileName[180];
   _u32              MaxSize, MasterToken;
   FileHdl =  sl_FsOpen(unsigned char *)DeviceFileName,
                  SL_FS_OVERWRITE | SL_FS_CREATE_SECURE | 
                  SL_FS_CREATE_NOSIGNATURE | SL_FS_CREATE_MAX_SIZE( MaxSize ),
                  &MasterToken);
   if(FileHdl < 0 )
   {
       /* error */
   }