diff --git a/source/libs/fatfs/ffconf.h b/source/libs/fatfs/ffconf.h index e061999..46c88d5 100644 --- a/source/libs/fatfs/ffconf.h +++ b/source/libs/fatfs/ffconf.h @@ -1,294 +1,294 @@ -/*---------------------------------------------------------------------------/ -/ FatFs Functional Configurations -/---------------------------------------------------------------------------*/ - -#define FFCONF_DEF 86604 /* Revision ID */ - -/*---------------------------------------------------------------------------/ -/ Function Configurations -/---------------------------------------------------------------------------*/ - -#define FF_FS_READONLY 0 -/* This option switches read-only configuration. (0:Read/Write or 1:Read-only) -/ Read-only configuration removes writing API functions, f_write(), f_sync(), -/ f_unlink(), f_mkdir(), f_chmod(), f_rename(), f_truncate(), f_getfree() -/ and optional writing functions as well. */ - - -#define FF_FS_MINIMIZE 0 -/* This option defines minimization level to remove some basic API functions. -/ -/ 0: Basic functions are fully enabled. -/ 1: f_stat(), f_getfree(), f_unlink(), f_mkdir(), f_truncate() and f_rename() -/ are removed. -/ 2: f_opendir(), f_readdir() and f_closedir() are removed in addition to 1. -/ 3: f_lseek() function is removed in addition to 2. */ - - -#define FF_USE_STRFUNC 2 -/* This option switches string functions, f_gets(), f_putc(), f_puts() and f_printf(). -/ -/ 0: Disable string functions. -/ 1: Enable without LF-CRLF conversion. -/ 2: Enable with LF-CRLF conversion. */ - - -#define FF_USE_FIND 1 -/* This option switches filtered directory read functions, f_findfirst() and -/ f_findnext(). (0:Disable, 1:Enable 2:Enable with matching altname[] too) */ - - -#define FF_USE_MKFS 1 -/* This option switches f_mkfs() function. (0:Disable or 1:Enable) */ - -#define FF_FASTFS 0 - -#if FF_FASTFS -#define FF_USE_FASTSEEK 1 -#else -#define FF_USE_FASTSEEK 0 -#endif -/* This option switches fast seek function. (0:Disable or 1:Enable) */ - - -#define FF_USE_EXPAND 0 -/* This option switches f_expand function. (0:Disable or 1:Enable) */ - - -#define FF_USE_CHMOD 1 -/* This option switches attribute manipulation functions, f_chmod() and f_utime(). -/ (0:Disable or 1:Enable) Also FF_FS_READONLY needs to be 0 to enable this option. */ - - -#define FF_USE_LABEL 0 -/* This option switches volume label functions, f_getlabel() and f_setlabel(). -/ (0:Disable or 1:Enable) */ - - -#define FF_USE_FORWARD 0 -/* This option switches f_forward() function. (0:Disable or 1:Enable) */ - - -/*---------------------------------------------------------------------------/ -/ Locale and Namespace Configurations -/---------------------------------------------------------------------------*/ - -#define FF_CODE_PAGE 850 -/* This option specifies the OEM code page to be used on the target system. -/ Incorrect code page setting can cause a file open failure. -/ -/ 437 - U.S. -/ 720 - Arabic -/ 737 - Greek -/ 771 - KBL -/ 775 - Baltic -/ 850 - Latin 1 -/ 852 - Latin 2 -/ 855 - Cyrillic -/ 857 - Turkish -/ 860 - Portuguese -/ 861 - Icelandic -/ 862 - Hebrew -/ 863 - Canadian French -/ 864 - Arabic -/ 865 - Nordic -/ 866 - Russian -/ 869 - Greek 2 -/ 932 - Japanese (DBCS) -/ 936 - Simplified Chinese (DBCS) -/ 949 - Korean (DBCS) -/ 950 - Traditional Chinese (DBCS) -/ 0 - Include all code pages above and configured by f_setcp() -*/ - - -#define FF_USE_LFN 3 -#define FF_MAX_LFN 255 -/* The FF_USE_LFN switches the support for LFN (long file name). -/ -/ 0: Disable LFN. FF_MAX_LFN has no effect. -/ 1: Enable LFN with static working buffer on the BSS. Always NOT thread-safe. -/ 2: Enable LFN with dynamic working buffer on the STACK. -/ 3: Enable LFN with dynamic working buffer on the HEAP. -/ -/ To enable the LFN, ffunicode.c needs to be added to the project. The LFN function -/ requiers certain internal working buffer occupies (FF_MAX_LFN + 1) * 2 bytes and -/ additional (FF_MAX_LFN + 44) / 15 * 32 bytes when exFAT is enabled. -/ The FF_MAX_LFN defines size of the working buffer in UTF-16 code unit and it can -/ be in range of 12 to 255. It is recommended to be set 255 to fully support LFN -/ specification. -/ When use stack for the working buffer, take care on stack overflow. When use heap -/ memory for the working buffer, memory management functions, ff_memalloc() and -/ ff_memfree() in ffsystem.c, need to be added to the project. */ - - -#define FF_LFN_UNICODE 0 -/* This option switches the character encoding on the API when LFN is enabled. -/ -/ 0: ANSI/OEM in current CP (TCHAR = char) -/ 1: Unicode in UTF-16 (TCHAR = WCHAR) -/ 2: Unicode in UTF-8 (TCHAR = char) -/ 3: Unicode in UTF-32 (TCHAR = DWORD) -/ -/ Also behavior of string I/O functions will be affected by this option. -/ When LFN is not enabled, this option has no effect. */ - - -#define FF_LFN_BUF 255 -#define FF_SFN_BUF 12 -/* This set of options defines size of file name members in the FILINFO structure -/ which is used to read out directory items. These values should be suffcient for -/ the file names to read. The maximum possible length of the read file name depends -/ on character encoding. When LFN is not enabled, these options have no effect. */ - - -#define FF_STRF_ENCODE 0 -/* When FF_LFN_UNICODE >= 1 with LFN enabled, string I/O functions, f_gets(), -/ f_putc(), f_puts and f_printf() convert the character encoding in it. -/ This option selects assumption of character encoding ON THE FILE to be -/ read/written via those functions. -/ -/ 0: ANSI/OEM in current CP -/ 1: Unicode in UTF-16LE -/ 2: Unicode in UTF-16BE -/ 3: Unicode in UTF-8 -*/ - - -#define FF_FS_RPATH 0 -/* This option configures support for relative path. -/ -/ 0: Disable relative path and remove related functions. -/ 1: Enable relative path. f_chdir() and f_chdrive() are available. -/ 2: f_getcwd() function is available in addition to 1. -*/ - - -/*---------------------------------------------------------------------------/ -/ Drive/Volume Configurations -/---------------------------------------------------------------------------*/ - -#define FF_VOLUMES 4 -/* Number of volumes (logical drives) to be used. (1-10) */ - - -#define FF_STR_VOLUME_ID 1 -// Order is important. Any change to order, must also be reflected to diskio drive enum. -#define FF_VOLUME_STRS "sd","ram","emmc","bis" -/* FF_STR_VOLUME_ID switches support for volume ID in arbitrary strings. -/ When FF_STR_VOLUME_ID is set to 1 or 2, arbitrary strings can be used as drive -/ number in the path name. FF_VOLUME_STRS defines the volume ID strings for each -/ logical drives. Number of items must not be less than FF_VOLUMES. Valid -/ characters for the volume ID strings are A-Z, a-z and 0-9, however, they are -/ compared in case-insensitive. If FF_STR_VOLUME_ID >= 1 and FF_VOLUME_STRS is -/ not defined, a user defined volume string table needs to be defined as: -/ -/ const char* VolumeStr[FF_VOLUMES] = {"ram","flash","sd","usb",... -*/ - - -#define FF_MULTI_PARTITION 0 -/* This option switches support for multiple volumes on the physical drive. -/ By default (0), each logical drive number is bound to the same physical drive -/ number and only an FAT volume found on the physical drive will be mounted. -/ When this function is enabled (1), each logical drive number can be bound to -/ arbitrary physical drive and partition listed in the VolToPart[]. Also f_fdisk() -/ funciton will be available. */ - - -#define FF_MIN_SS 512 -#define FF_MAX_SS 512 -/* This set of options configures the range of sector size to be supported. (512, -/ 1024, 2048 or 4096) Always set both 512 for most systems, generic memory card and -/ harddisk. But a larger value may be required for on-board flash memory and some -/ type of optical media. When FF_MAX_SS is larger than FF_MIN_SS, FatFs is configured -/ for variable sector size mode and disk_ioctl() function needs to implement -/ GET_SECTOR_SIZE command. */ - - -#define FF_USE_TRIM 0 -/* This option switches support for ATA-TRIM. (0:Disable or 1:Enable) -/ To enable Trim function, also CTRL_TRIM command should be implemented to the -/ disk_ioctl() function. */ - - -#define FF_FS_NOFSINFO 1 -/* If you need to know correct free space on the FAT32 volume, set bit 0 of this -/ option, and f_getfree() function at first time after volume mount will force -/ a full FAT scan. Bit 1 controls the use of last allocated cluster number. -/ -/ bit0=0: Use free cluster count in the FSINFO if available. -/ bit0=1: Do not trust free cluster count in the FSINFO. -/ bit1=0: Use last allocated cluster number in the FSINFO if available. -/ bit1=1: Do not trust last allocated cluster number in the FSINFO. -*/ - - - -/*---------------------------------------------------------------------------/ -/ System Configurations -/---------------------------------------------------------------------------*/ - -#define FF_FS_TINY 0 -/* This option switches tiny buffer configuration. (0:Normal or 1:Tiny) -/ At the tiny configuration, size of file object (FIL) is shrinked FF_MAX_SS bytes. -/ Instead of private sector buffer eliminated from the file object, common sector -/ buffer in the filesystem object (FATFS) is used for the file data transfer. */ - - -#define FF_FS_EXFAT 1 -/* This option switches support for exFAT filesystem. (0:Disable or 1:Enable) -/ To enable exFAT, also LFN needs to be enabled. (FF_USE_LFN >= 1) -/ Note that enabling exFAT discards ANSI C (C89) compatibility. */ - - -#define FF_FS_NORTC 1 -#define FF_NORTC_MON 1 -#define FF_NORTC_MDAY 1 -#define FF_NORTC_YEAR 2020 -/* The option FF_FS_NORTC switches timestamp function. If the system does not have -/ any RTC function or valid timestamp is not needed, set FF_FS_NORTC = 1 to disable -/ the timestamp function. Every object modified by FatFs will have a fixed timestamp -/ defined by FF_NORTC_MON, FF_NORTC_MDAY and FF_NORTC_YEAR in local time. -/ To enable timestamp function (FF_FS_NORTC = 0), get_fattime() function need to be -/ added to the project to read current time form real-time clock. FF_NORTC_MON, -/ FF_NORTC_MDAY and FF_NORTC_YEAR have no effect. -/ These options have no effect at read-only configuration (FF_FS_READONLY = 1). */ - - -#define FF_FS_LOCK 0 -/* The option FF_FS_LOCK switches file lock function to control duplicated file open -/ and illegal operation to open objects. This option must be 0 when FF_FS_READONLY -/ is 1. -/ -/ 0: Disable file lock function. To avoid volume corruption, application program -/ should avoid illegal open, remove and rename to the open objects. -/ >0: Enable file lock function. The value defines how many files/sub-directories -/ can be opened simultaneously under file lock control. Note that the file -/ lock control is independent of re-entrancy. */ - - -/* #include // O/S definitions */ -#define FF_FS_REENTRANT 0 -#define FF_FS_TIMEOUT 1000 -#define FF_SYNC_t HANDLE -/* The option FF_FS_REENTRANT switches the re-entrancy (thread safe) of the FatFs -/ module itself. Note that regardless of this option, file access to different -/ volume is always re-entrant and volume control functions, f_mount(), f_mkfs() -/ and f_fdisk() function, are always not re-entrant. Only file/directory access -/ to the same volume is under control of this function. -/ -/ 0: Disable re-entrancy. FF_FS_TIMEOUT and FF_SYNC_t have no effect. -/ 1: Enable re-entrancy. Also user provided synchronization handlers, -/ ff_req_grant(), ff_rel_grant(), ff_del_syncobj() and ff_cre_syncobj() -/ function, must be added to the project. Samples are available in -/ option/syscall.c. -/ -/ The FF_FS_TIMEOUT defines timeout period in unit of time tick. -/ The FF_SYNC_t defines O/S dependent sync object type. e.g. HANDLE, ID, OS_EVENT*, -/ SemaphoreHandle_t and etc. A header file for O/S definitions needs to be -/ included somewhere in the scope of ff.h. */ - - - -/*--- End of configuration options ---*/ +/*---------------------------------------------------------------------------/ +/ FatFs Functional Configurations +/---------------------------------------------------------------------------*/ + +#define FFCONF_DEF 86604 /* Revision ID */ + +/*---------------------------------------------------------------------------/ +/ Function Configurations +/---------------------------------------------------------------------------*/ + +#define FF_FS_READONLY 0 +/* This option switches read-only configuration. (0:Read/Write or 1:Read-only) +/ Read-only configuration removes writing API functions, f_write(), f_sync(), +/ f_unlink(), f_mkdir(), f_chmod(), f_rename(), f_truncate(), f_getfree() +/ and optional writing functions as well. */ + + +#define FF_FS_MINIMIZE 0 +/* This option defines minimization level to remove some basic API functions. +/ +/ 0: Basic functions are fully enabled. +/ 1: f_stat(), f_getfree(), f_unlink(), f_mkdir(), f_truncate() and f_rename() +/ are removed. +/ 2: f_opendir(), f_readdir() and f_closedir() are removed in addition to 1. +/ 3: f_lseek() function is removed in addition to 2. */ + + +#define FF_USE_STRFUNC 2 +/* This option switches string functions, f_gets(), f_putc(), f_puts() and f_printf(). +/ +/ 0: Disable string functions. +/ 1: Enable without LF-CRLF conversion. +/ 2: Enable with LF-CRLF conversion. */ + + +#define FF_USE_FIND 1 +/* This option switches filtered directory read functions, f_findfirst() and +/ f_findnext(). (0:Disable, 1:Enable 2:Enable with matching altname[] too) */ + + +#define FF_USE_MKFS 1 +/* This option switches f_mkfs() function. (0:Disable or 1:Enable) */ + +#define FF_FASTFS 0 + +#if FF_FASTFS +#define FF_USE_FASTSEEK 1 +#else +#define FF_USE_FASTSEEK 0 +#endif +/* This option switches fast seek function. (0:Disable or 1:Enable) */ + + +#define FF_USE_EXPAND 0 +/* This option switches f_expand function. (0:Disable or 1:Enable) */ + + +#define FF_USE_CHMOD 1 +/* This option switches attribute manipulation functions, f_chmod() and f_utime(). +/ (0:Disable or 1:Enable) Also FF_FS_READONLY needs to be 0 to enable this option. */ + + +#define FF_USE_LABEL 0 +/* This option switches volume label functions, f_getlabel() and f_setlabel(). +/ (0:Disable or 1:Enable) */ + + +#define FF_USE_FORWARD 0 +/* This option switches f_forward() function. (0:Disable or 1:Enable) */ + + +/*---------------------------------------------------------------------------/ +/ Locale and Namespace Configurations +/---------------------------------------------------------------------------*/ + +#define FF_CODE_PAGE 850 +/* This option specifies the OEM code page to be used on the target system. +/ Incorrect code page setting can cause a file open failure. +/ +/ 437 - U.S. +/ 720 - Arabic +/ 737 - Greek +/ 771 - KBL +/ 775 - Baltic +/ 850 - Latin 1 +/ 852 - Latin 2 +/ 855 - Cyrillic +/ 857 - Turkish +/ 860 - Portuguese +/ 861 - Icelandic +/ 862 - Hebrew +/ 863 - Canadian French +/ 864 - Arabic +/ 865 - Nordic +/ 866 - Russian +/ 869 - Greek 2 +/ 932 - Japanese (DBCS) +/ 936 - Simplified Chinese (DBCS) +/ 949 - Korean (DBCS) +/ 950 - Traditional Chinese (DBCS) +/ 0 - Include all code pages above and configured by f_setcp() +*/ + + +#define FF_USE_LFN 3 +#define FF_MAX_LFN 255 +/* The FF_USE_LFN switches the support for LFN (long file name). +/ +/ 0: Disable LFN. FF_MAX_LFN has no effect. +/ 1: Enable LFN with static working buffer on the BSS. Always NOT thread-safe. +/ 2: Enable LFN with dynamic working buffer on the STACK. +/ 3: Enable LFN with dynamic working buffer on the HEAP. +/ +/ To enable the LFN, ffunicode.c needs to be added to the project. The LFN function +/ requiers certain internal working buffer occupies (FF_MAX_LFN + 1) * 2 bytes and +/ additional (FF_MAX_LFN + 44) / 15 * 32 bytes when exFAT is enabled. +/ The FF_MAX_LFN defines size of the working buffer in UTF-16 code unit and it can +/ be in range of 12 to 255. It is recommended to be set 255 to fully support LFN +/ specification. +/ When use stack for the working buffer, take care on stack overflow. When use heap +/ memory for the working buffer, memory management functions, ff_memalloc() and +/ ff_memfree() in ffsystem.c, need to be added to the project. */ + + +#define FF_LFN_UNICODE 0 +/* This option switches the character encoding on the API when LFN is enabled. +/ +/ 0: ANSI/OEM in current CP (TCHAR = char) +/ 1: Unicode in UTF-16 (TCHAR = WCHAR) +/ 2: Unicode in UTF-8 (TCHAR = char) +/ 3: Unicode in UTF-32 (TCHAR = DWORD) +/ +/ Also behavior of string I/O functions will be affected by this option. +/ When LFN is not enabled, this option has no effect. */ + + +#define FF_LFN_BUF 255 +#define FF_SFN_BUF 12 +/* This set of options defines size of file name members in the FILINFO structure +/ which is used to read out directory items. These values should be suffcient for +/ the file names to read. The maximum possible length of the read file name depends +/ on character encoding. When LFN is not enabled, these options have no effect. */ + + +#define FF_STRF_ENCODE 0 +/* When FF_LFN_UNICODE >= 1 with LFN enabled, string I/O functions, f_gets(), +/ f_putc(), f_puts and f_printf() convert the character encoding in it. +/ This option selects assumption of character encoding ON THE FILE to be +/ read/written via those functions. +/ +/ 0: ANSI/OEM in current CP +/ 1: Unicode in UTF-16LE +/ 2: Unicode in UTF-16BE +/ 3: Unicode in UTF-8 +*/ + + +#define FF_FS_RPATH 0 +/* This option configures support for relative path. +/ +/ 0: Disable relative path and remove related functions. +/ 1: Enable relative path. f_chdir() and f_chdrive() are available. +/ 2: f_getcwd() function is available in addition to 1. +*/ + + +/*---------------------------------------------------------------------------/ +/ Drive/Volume Configurations +/---------------------------------------------------------------------------*/ + +#define FF_VOLUMES 4 +/* Number of volumes (logical drives) to be used. (1-10) */ + + +#define FF_STR_VOLUME_ID 1 +// Order is important. Any change to order, must also be reflected to diskio drive enum. +#define FF_VOLUME_STRS "sd","ram","emmc","bis" +/* FF_STR_VOLUME_ID switches support for volume ID in arbitrary strings. +/ When FF_STR_VOLUME_ID is set to 1 or 2, arbitrary strings can be used as drive +/ number in the path name. FF_VOLUME_STRS defines the volume ID strings for each +/ logical drives. Number of items must not be less than FF_VOLUMES. Valid +/ characters for the volume ID strings are A-Z, a-z and 0-9, however, they are +/ compared in case-insensitive. If FF_STR_VOLUME_ID >= 1 and FF_VOLUME_STRS is +/ not defined, a user defined volume string table needs to be defined as: +/ +/ const char* VolumeStr[FF_VOLUMES] = {"ram","flash","sd","usb",... +*/ + + +#define FF_MULTI_PARTITION 0 +/* This option switches support for multiple volumes on the physical drive. +/ By default (0), each logical drive number is bound to the same physical drive +/ number and only an FAT volume found on the physical drive will be mounted. +/ When this function is enabled (1), each logical drive number can be bound to +/ arbitrary physical drive and partition listed in the VolToPart[]. Also f_fdisk() +/ funciton will be available. */ + + +#define FF_MIN_SS 512 +#define FF_MAX_SS 512 +/* This set of options configures the range of sector size to be supported. (512, +/ 1024, 2048 or 4096) Always set both 512 for most systems, generic memory card and +/ harddisk. But a larger value may be required for on-board flash memory and some +/ type of optical media. When FF_MAX_SS is larger than FF_MIN_SS, FatFs is configured +/ for variable sector size mode and disk_ioctl() function needs to implement +/ GET_SECTOR_SIZE command. */ + + +#define FF_USE_TRIM 0 +/* This option switches support for ATA-TRIM. (0:Disable or 1:Enable) +/ To enable Trim function, also CTRL_TRIM command should be implemented to the +/ disk_ioctl() function. */ + + +#define FF_FS_NOFSINFO 1 +/* If you need to know correct free space on the FAT32 volume, set bit 0 of this +/ option, and f_getfree() function at first time after volume mount will force +/ a full FAT scan. Bit 1 controls the use of last allocated cluster number. +/ +/ bit0=0: Use free cluster count in the FSINFO if available. +/ bit0=1: Do not trust free cluster count in the FSINFO. +/ bit1=0: Use last allocated cluster number in the FSINFO if available. +/ bit1=1: Do not trust last allocated cluster number in the FSINFO. +*/ + + + +/*---------------------------------------------------------------------------/ +/ System Configurations +/---------------------------------------------------------------------------*/ + +#define FF_FS_TINY 0 +/* This option switches tiny buffer configuration. (0:Normal or 1:Tiny) +/ At the tiny configuration, size of file object (FIL) is shrinked FF_MAX_SS bytes. +/ Instead of private sector buffer eliminated from the file object, common sector +/ buffer in the filesystem object (FATFS) is used for the file data transfer. */ + + +#define FF_FS_EXFAT 1 +/* This option switches support for exFAT filesystem. (0:Disable or 1:Enable) +/ To enable exFAT, also LFN needs to be enabled. (FF_USE_LFN >= 1) +/ Note that enabling exFAT discards ANSI C (C89) compatibility. */ + + +#define FF_FS_NORTC 1 +#define FF_NORTC_MON 7 +#define FF_NORTC_MDAY 17 +#define FF_NORTC_YEAR 2026 +/* The option FF_FS_NORTC switches timestamp function. If the system does not have +/ any RTC function or valid timestamp is not needed, set FF_FS_NORTC = 1 to disable +/ the timestamp function. Every object modified by FatFs will have a fixed timestamp +/ defined by FF_NORTC_MON, FF_NORTC_MDAY and FF_NORTC_YEAR in local time. +/ To enable timestamp function (FF_FS_NORTC = 0), get_fattime() function need to be +/ added to the project to read current time form real-time clock. FF_NORTC_MON, +/ FF_NORTC_MDAY and FF_NORTC_YEAR have no effect. +/ These options have no effect at read-only configuration (FF_FS_READONLY = 1). */ + + +#define FF_FS_LOCK 0 +/* The option FF_FS_LOCK switches file lock function to control duplicated file open +/ and illegal operation to open objects. This option must be 0 when FF_FS_READONLY +/ is 1. +/ +/ 0: Disable file lock function. To avoid volume corruption, application program +/ should avoid illegal open, remove and rename to the open objects. +/ >0: Enable file lock function. The value defines how many files/sub-directories +/ can be opened simultaneously under file lock control. Note that the file +/ lock control is independent of re-entrancy. */ + + +/* #include // O/S definitions */ +#define FF_FS_REENTRANT 0 +#define FF_FS_TIMEOUT 1000 +#define FF_SYNC_t HANDLE +/* The option FF_FS_REENTRANT switches the re-entrancy (thread safe) of the FatFs +/ module itself. Note that regardless of this option, file access to different +/ volume is always re-entrant and volume control functions, f_mount(), f_mkfs() +/ and f_fdisk() function, are always not re-entrant. Only file/directory access +/ to the same volume is under control of this function. +/ +/ 0: Disable re-entrancy. FF_FS_TIMEOUT and FF_SYNC_t have no effect. +/ 1: Enable re-entrancy. Also user provided synchronization handlers, +/ ff_req_grant(), ff_rel_grant(), ff_del_syncobj() and ff_cre_syncobj() +/ function, must be added to the project. Samples are available in +/ option/syscall.c. +/ +/ The FF_FS_TIMEOUT defines timeout period in unit of time tick. +/ The FF_SYNC_t defines O/S dependent sync object type. e.g. HANDLE, ID, OS_EVENT*, +/ SemaphoreHandle_t and etc. A header file for O/S definitions needs to be +/ included somewhere in the scope of ff.h. */ + + + +/*--- End of configuration options ---*/