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Merge branch 'feature/42-update-fatfs' of mhu/reflow-oven-control-sw into dev

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Mario Hüttel 2021-12-16 20:55:34 +01:00 committed by Gogs
commit bf6a222c9d
7 changed files with 1451 additions and 1183 deletions
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24
stm-firmware/fatfs/LICENSE.txt Normal file
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@ -0,0 +1,24 @@
FatFs License
FatFs has being developped as a personal project of the author, ChaN. It is free from the code anyone else wrote at current release. Following code block shows a copy of the FatFs license document that heading the source files.
/*----------------------------------------------------------------------------/
/ FatFs - Generic FAT Filesystem Module Rx.xx /
/-----------------------------------------------------------------------------/
/
/ Copyright (C) 20xx, ChaN, all right reserved.
/
/ FatFs module is an open source software. Redistribution and use of FatFs in
/ source and binary forms, with or without modification, are permitted provided
/ that the following condition is met:
/
/ 1. Redistributions of source code must retain the above copyright notice,
/ this condition and the following disclaimer.
/
/ This software is provided by the copyright holder and contributors "AS IS"
/ and any warranties related to this software are DISCLAIMED.
/ The copyright owner or contributors be NOT LIABLE for any damages caused
/ by use of this software.
/----------------------------------------------------------------------------*/
Therefore FatFs license is one of the BSD-style licenses, but there is a significant feature. FatFs is mainly intended for embedded systems. In order to extend the usability for commercial products, the redistributions of FatFs in binary form, such as embedded code, binary library and any forms without source code, do not need to include about FatFs in the documentations. This is equivalent to the 1-clause BSD license. Of course FatFs is compatible with the most of open source software licenses include GNU GPL. When you redistribute the FatFs source code with changes or create a fork, the license can also be changed to GNU GPL, BSD-style license or any open source software license that not conflict with FatFs license.

940
stm-firmware/fatfs/ff.c
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72
stm-firmware/include/fatfs/ff.h
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@ -1,8 +1,8 @@
/*----------------------------------------------------------------------------/ /*----------------------------------------------------------------------------/
/ FatFs - Generic FAT Filesystem module R0.14a / / FatFs - Generic FAT Filesystem module R0.14b /
/-----------------------------------------------------------------------------/ /-----------------------------------------------------------------------------/
/ /
/ Copyright (C) 2020, ChaN, all right reserved. / Copyright (C) 2021, ChaN, all right reserved.
/ /
/ FatFs module is an open source software. Redistribution and use of FatFs in / FatFs module is an open source software. Redistribution and use of FatFs in
/ source and binary forms, with or without modification, are permitted provided / source and binary forms, with or without modification, are permitted provided
@ -20,7 +20,7 @@
#ifndef FF_DEFINED #ifndef FF_DEFINED
#define FF_DEFINED 80196 /* Revision ID */ #define FF_DEFINED 86631 /* Revision ID */
#ifdef __cplusplus #ifdef __cplusplus
extern "C" { extern "C" {
@ -35,10 +35,14 @@ extern "C" {
/* Integer types used for FatFs API */ /* Integer types used for FatFs API */
#if defined(_WIN32) /* Main development platform */ #if defined(_WIN32) /* Windows VC++ (for development only) */
#define FF_INTDEF 2 #define FF_INTDEF 2
#include <windows.h> #include <windows.h>
typedef unsigned __int64 QWORD; typedef unsigned __int64 QWORD;
#include <float.h>
#define isnan(v) _isnan(v)
#define isinf(v) (!_finite(v))
#elif (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__cplusplus) /* C99 or later */ #elif (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__cplusplus) /* C99 or later */
#define FF_INTDEF 2 #define FF_INTDEF 2
#include <stdint.h> #include <stdint.h>
@ -48,6 +52,7 @@ typedef uint16_t WORD; /* 16-bit unsigned integer */
typedef uint32_t DWORD; /* 32-bit unsigned integer */ typedef uint32_t DWORD; /* 32-bit unsigned integer */
typedef uint64_t QWORD; /* 64-bit unsigned integer */ typedef uint64_t QWORD; /* 64-bit unsigned integer */
typedef WORD WCHAR; /* UTF-16 character type */ typedef WORD WCHAR; /* UTF-16 character type */
#else /* Earlier than C99 */ #else /* Earlier than C99 */
#define FF_INTDEF 1 #define FF_INTDEF 1
typedef unsigned int UINT; /* int must be 16-bit or 32-bit */ typedef unsigned int UINT; /* int must be 16-bit or 32-bit */
@ -58,28 +63,29 @@ typedef WORD WCHAR; /* UTF-16 character type */
#endif #endif
/* Definitions of volume management */ /* Type of file size and LBA variables */
#if FF_MULTI_PARTITION /* Multiple partition configuration */ #if FF_FS_EXFAT
typedef struct { #if FF_INTDEF != 2
BYTE pd; /* Physical drive number */ #error exFAT feature wants C99 or later
BYTE pt; /* Partition: 0:Auto detect, 1-4:Forced partition) */
} PARTITION;
extern PARTITION VolToPart[]; /* Volume - Partition mapping table */
#endif #endif
typedef QWORD FSIZE_t;
#if FF_STR_VOLUME_ID #if FF_LBA64
#ifndef FF_VOLUME_STRS typedef QWORD LBA_t;
extern const char* VolumeStr[FF_VOLUMES]; /* User defied volume ID */ #else
typedef DWORD LBA_t;
#endif #endif
#else
#if FF_LBA64
#error exFAT needs to be enabled when enable 64-bit LBA
#endif
typedef DWORD FSIZE_t;
typedef DWORD LBA_t;
#endif #endif
/* Type of path name strings on FatFs API */ /* Type of path name strings on FatFs API (TCHAR) */
#ifndef _INC_TCHAR
#define _INC_TCHAR
#if FF_USE_LFN && FF_LFN_UNICODE == 1 /* Unicode in UTF-16 encoding */ #if FF_USE_LFN && FF_LFN_UNICODE == 1 /* Unicode in UTF-16 encoding */
typedef WCHAR TCHAR; typedef WCHAR TCHAR;
@ -101,28 +107,22 @@ typedef char TCHAR;
#define _TEXT(x) x #define _TEXT(x) x
#endif #endif
#endif
/* Definitions of volume management */
/* Type of file size and LBA variables */ #if FF_MULTI_PARTITION /* Multiple partition configuration */
typedef struct {
BYTE pd; /* Physical drive number */
BYTE pt; /* Partition: 0:Auto detect, 1-4:Forced partition) */
} PARTITION;
extern PARTITION VolToPart[]; /* Volume - Partition mapping table */
#endif
#if FF_FS_EXFAT #if FF_STR_VOLUME_ID
#if FF_INTDEF != 2 #ifndef FF_VOLUME_STRS
#error exFAT feature wants C99 or later extern const char* VolumeStr[FF_VOLUMES]; /* User defied volume ID */
#endif #endif
typedef QWORD FSIZE_t;
#if FF_LBA64
typedef QWORD LBA_t;
#else
typedef DWORD LBA_t;
#endif
#else
#if FF_LBA64
#error exFAT needs to be enabled when enable 64-bit LBA
#endif
typedef DWORD FSIZE_t;
typedef DWORD LBA_t;
#endif #endif

51
stm-firmware/include/fatfs/ffconf.h
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@ -2,7 +2,7 @@
/ FatFs Functional Configurations / FatFs Functional Configurations
/---------------------------------------------------------------------------*/ /---------------------------------------------------------------------------*/
#define FFCONF_DEF 80196 /* Revision ID */ #define FFCONF_DEF 86631 /* Revision ID */
/*---------------------------------------------------------------------------/ /*---------------------------------------------------------------------------/
/ Function Configurations / Function Configurations
@ -25,14 +25,6 @@
/ 3: f_lseek() function is removed in addition to 2. */ / 3: f_lseek() function is removed in addition to 2. */
#define FF_USE_STRFUNC 1
/* 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 #define FF_USE_FIND 1
/* This option switches filtered directory read functions, f_findfirst() and /* This option switches filtered directory read functions, f_findfirst() and
/ f_findnext(). (0:Disable, 1:Enable 2:Enable with matching altname[] too) */ / f_findnext(). (0:Disable, 1:Enable 2:Enable with matching altname[] too) */
@ -64,6 +56,30 @@
/* This option switches f_forward() function. (0:Disable or 1:Enable) */ /* This option switches f_forward() function. (0:Disable or 1:Enable) */
#define FF_USE_STRFUNC 1
#define FF_PRINT_LLI 0
#define FF_PRINT_FLOAT 0
#define FF_STRF_ENCODE 0
/* FF_USE_STRFUNC switches string functions, f_gets(), f_putc(), f_puts() and
/ f_printf().
/
/ 0: Disable. FF_PRINT_LLI, FF_PRINT_FLOAT and FF_STRF_ENCODE have no effect.
/ 1: Enable without LF-CRLF conversion.
/ 2: Enable with LF-CRLF conversion.
/
/ FF_PRINT_LLI = 1 makes f_printf() support long long argument and FF_PRINT_FLOAT = 1/2
makes f_printf() support floating point argument. These features want C99 or later.
/ When FF_LFN_UNICODE >= 1 with LFN enabled, string functions convert the character
/ encoding in it. FF_STRF_ENCODE 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
*/
/*---------------------------------------------------------------------------/ /*---------------------------------------------------------------------------/
/ Locale and Namespace Configurations / Locale and Namespace Configurations
/---------------------------------------------------------------------------*/ /---------------------------------------------------------------------------*/
@ -137,19 +153,6 @@
/ on character encoding. When LFN is not enabled, these options have no effect. */ / on character encoding. When LFN is not enabled, these options have no effect. */
#define FF_STRF_ENCODE 3
/* 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 2 #define FF_FS_RPATH 2
/* This option configures support for relative path. /* This option configures support for relative path.
/ /
@ -194,7 +197,7 @@
#define FF_MAX_SS 512 #define FF_MAX_SS 512
/* This set of options configures the range of sector size to be supported. (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 / 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 / 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 / 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 / for variable sector size mode and disk_ioctl() function needs to implement
/ GET_SECTOR_SIZE command. */ / GET_SECTOR_SIZE command. */
@ -228,7 +231,7 @@
/ buffer in the filesystem object (FATFS) is used for the file data transfer. */ / buffer in the filesystem object (FATFS) is used for the file data transfer. */
#define FF_FS_EXFAT 0 #define FF_FS_EXFAT 1
/* This option switches support for exFAT filesystem. (0:Disable or 1:Enable) /* 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) / To enable exFAT, also LFN needs to be enabled. (FF_USE_LFN >= 1)
/ Note that enabling exFAT discards ANSI C (C89) compatibility. */ / Note that enabling exFAT discards ANSI C (C89) compatibility. */

1116
stm-firmware/updater/ram-code/fatfs/ff.c
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76
stm-firmware/updater/ram-code/include/fatfs/ff.h
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@ -1,8 +1,8 @@
/*----------------------------------------------------------------------------/ /*----------------------------------------------------------------------------/
/ FatFs - Generic FAT Filesystem module R0.14 / / FatFs - Generic FAT Filesystem module R0.14b /
/-----------------------------------------------------------------------------/ /-----------------------------------------------------------------------------/
/ /
/ Copyright (C) 2019, ChaN, all right reserved. / Copyright (C) 2021, ChaN, all right reserved.
/ /
/ FatFs module is an open source software. Redistribution and use of FatFs in / FatFs module is an open source software. Redistribution and use of FatFs in
/ source and binary forms, with or without modification, are permitted provided / source and binary forms, with or without modification, are permitted provided
@ -20,7 +20,7 @@
#ifndef FF_DEFINED #ifndef FF_DEFINED
#define FF_DEFINED 86606 /* Revision ID */ #define FF_DEFINED 86631 /* Revision ID */
#ifdef __cplusplus #ifdef __cplusplus
extern "C" { extern "C" {
@ -35,10 +35,14 @@ extern "C" {
/* Integer types used for FatFs API */ /* Integer types used for FatFs API */
#if defined(_WIN32) /* Main development platform */ #if defined(_WIN32) /* Windows VC++ (for development only) */
#define FF_INTDEF 2 #define FF_INTDEF 2
#include <windows.h> #include <windows.h>
typedef unsigned __int64 QWORD; typedef unsigned __int64 QWORD;
#include <float.h>
#define isnan(v) _isnan(v)
#define isinf(v) (!_finite(v))
#elif (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__cplusplus) /* C99 or later */ #elif (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__cplusplus) /* C99 or later */
#define FF_INTDEF 2 #define FF_INTDEF 2
#include <stdint.h> #include <stdint.h>
@ -48,6 +52,7 @@ typedef uint16_t WORD; /* 16-bit unsigned integer */
typedef uint32_t DWORD; /* 32-bit unsigned integer */ typedef uint32_t DWORD; /* 32-bit unsigned integer */
typedef uint64_t QWORD; /* 64-bit unsigned integer */ typedef uint64_t QWORD; /* 64-bit unsigned integer */
typedef WORD WCHAR; /* UTF-16 character type */ typedef WORD WCHAR; /* UTF-16 character type */
#else /* Earlier than C99 */ #else /* Earlier than C99 */
#define FF_INTDEF 1 #define FF_INTDEF 1
typedef unsigned int UINT; /* int must be 16-bit or 32-bit */ typedef unsigned int UINT; /* int must be 16-bit or 32-bit */
@ -58,28 +63,29 @@ typedef WORD WCHAR; /* UTF-16 character type */
#endif #endif
/* Definitions of volume management */ /* Type of file size and LBA variables */
#if FF_MULTI_PARTITION /* Multiple partition configuration */ #if FF_FS_EXFAT
typedef struct { #if FF_INTDEF != 2
BYTE pd; /* Physical drive number */ #error exFAT feature wants C99 or later
BYTE pt; /* Partition: 0:Auto detect, 1-4:Forced partition) */
} PARTITION;
extern PARTITION VolToPart[]; /* Volume - Partition mapping table */
#endif #endif
typedef QWORD FSIZE_t;
#if FF_STR_VOLUME_ID #if FF_LBA64
#ifndef FF_VOLUME_STRS typedef QWORD LBA_t;
extern const char* VolumeStr[FF_VOLUMES]; /* User defied volume ID */ #else
typedef DWORD LBA_t;
#endif #endif
#else
#if FF_LBA64
#error exFAT needs to be enabled when enable 64-bit LBA
#endif
typedef DWORD FSIZE_t;
typedef DWORD LBA_t;
#endif #endif
/* Type of path name strings on FatFs API */ /* Type of path name strings on FatFs API (TCHAR) */
#ifndef _INC_TCHAR
#define _INC_TCHAR
#if FF_USE_LFN && FF_LFN_UNICODE == 1 /* Unicode in UTF-16 encoding */ #if FF_USE_LFN && FF_LFN_UNICODE == 1 /* Unicode in UTF-16 encoding */
typedef WCHAR TCHAR; typedef WCHAR TCHAR;
@ -101,28 +107,22 @@ typedef char TCHAR;
#define _TEXT(x) x #define _TEXT(x) x
#endif #endif
#endif
/* Definitions of volume management */
/* Type of file size and LBA variables */ #if FF_MULTI_PARTITION /* Multiple partition configuration */
typedef struct {
BYTE pd; /* Physical drive number */
BYTE pt; /* Partition: 0:Auto detect, 1-4:Forced partition) */
} PARTITION;
extern PARTITION VolToPart[]; /* Volume - Partition mapping table */
#endif
#if FF_FS_EXFAT #if FF_STR_VOLUME_ID
#if FF_INTDEF != 2 #ifndef FF_VOLUME_STRS
#error exFAT feature wants C99 or later extern const char* VolumeStr[FF_VOLUMES]; /* User defied volume ID */
#endif #endif
typedef QWORD FSIZE_t;
#if FF_LBA64
typedef QWORD LBA_t;
#else
typedef DWORD LBA_t;
#endif
#else
#if FF_LBA64
#error exFAT needs to be enabled when enable 64-bit LBA
#endif
typedef DWORD FSIZE_t;
typedef DWORD LBA_t;
#endif #endif
@ -345,10 +345,6 @@ TCHAR* f_gets (TCHAR* buff, int len, FIL* fp); /* Get a string from the fil
#define f_rmdir(path) f_unlink(path) #define f_rmdir(path) f_unlink(path)
#define f_unmount(path) f_mount(0, path, 0) #define f_unmount(path) f_mount(0, path, 0)
#ifndef EOF
#define EOF (-1)
#endif

59
stm-firmware/updater/ram-code/include/fatfs/ffconf.h
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@ -2,7 +2,7 @@
/ FatFs Functional Configurations / FatFs Functional Configurations
/---------------------------------------------------------------------------*/ /---------------------------------------------------------------------------*/
#define FFCONF_DEF 86606 /* Revision ID */ #define FFCONF_DEF 86631 /* Revision ID */
/*---------------------------------------------------------------------------/ /*---------------------------------------------------------------------------/
/ Function Configurations / Function Configurations
@ -25,15 +25,7 @@
/ 3: f_lseek() function is removed in addition to 2. */ / 3: f_lseek() function is removed in addition to 2. */
#define FF_USE_STRFUNC 1 #define FF_USE_FIND 1
/* 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 0
/* This option switches filtered directory read functions, f_findfirst() and /* This option switches filtered directory read functions, f_findfirst() and
/ f_findnext(). (0:Disable, 1:Enable 2:Enable with matching altname[] too) */ / f_findnext(). (0:Disable, 1:Enable 2:Enable with matching altname[] too) */
@ -64,6 +56,30 @@
/* This option switches f_forward() function. (0:Disable or 1:Enable) */ /* This option switches f_forward() function. (0:Disable or 1:Enable) */
#define FF_USE_STRFUNC 1
#define FF_PRINT_LLI 0
#define FF_PRINT_FLOAT 0
#define FF_STRF_ENCODE 0
/* FF_USE_STRFUNC switches string functions, f_gets(), f_putc(), f_puts() and
/ f_printf().
/
/ 0: Disable. FF_PRINT_LLI, FF_PRINT_FLOAT and FF_STRF_ENCODE have no effect.
/ 1: Enable without LF-CRLF conversion.
/ 2: Enable with LF-CRLF conversion.
/
/ FF_PRINT_LLI = 1 makes f_printf() support long long argument and FF_PRINT_FLOAT = 1/2
makes f_printf() support floating point argument. These features want C99 or later.
/ When FF_LFN_UNICODE >= 1 with LFN enabled, string functions convert the character
/ encoding in it. FF_STRF_ENCODE 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
*/
/*---------------------------------------------------------------------------/ /*---------------------------------------------------------------------------/
/ Locale and Namespace Configurations / Locale and Namespace Configurations
/---------------------------------------------------------------------------*/ /---------------------------------------------------------------------------*/
@ -137,19 +153,6 @@
/ on character encoding. When LFN is not enabled, these options have no effect. */ / on character encoding. When LFN is not enabled, these options have no effect. */
#define FF_STRF_ENCODE 3
/* 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 #define FF_FS_RPATH 0
/* This option configures support for relative path. /* This option configures support for relative path.
/ /
@ -194,7 +197,7 @@
#define FF_MAX_SS 512 #define FF_MAX_SS 512
/* This set of options configures the range of sector size to be supported. (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 / 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 / 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 / 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 / for variable sector size mode and disk_ioctl() function needs to implement
/ GET_SECTOR_SIZE command. */ / GET_SECTOR_SIZE command. */
@ -205,8 +208,8 @@
/ To enable the 64-bit LBA, also exFAT needs to be enabled. (FF_FS_EXFAT == 1) */ / To enable the 64-bit LBA, also exFAT needs to be enabled. (FF_FS_EXFAT == 1) */
#define FF_MIN_GPT 0x100000000 #define FF_MIN_GPT 0x10000000
/* Minimum number of sectors to switch GPT format to create partition in f_mkfs and /* Minimum number of sectors to switch GPT as partitioning format in f_mkfs and
/ f_fdisk function. 0x100000000 max. This option has no effect when FF_LBA64 == 0. */ / f_fdisk function. 0x100000000 max. This option has no effect when FF_LBA64 == 0. */
@ -228,7 +231,7 @@
/ buffer in the filesystem object (FATFS) is used for the file data transfer. */ / buffer in the filesystem object (FATFS) is used for the file data transfer. */
#define FF_FS_EXFAT 0 #define FF_FS_EXFAT 1
/* This option switches support for exFAT filesystem. (0:Disable or 1:Enable) /* 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) / To enable exFAT, also LFN needs to be enabled. (FF_USE_LFN >= 1)
/ Note that enabling exFAT discards ANSI C (C89) compatibility. */ / Note that enabling exFAT discards ANSI C (C89) compatibility. */
@ -237,7 +240,7 @@
#define FF_FS_NORTC 0 #define FF_FS_NORTC 0
#define FF_NORTC_MON 1 #define FF_NORTC_MON 1
#define FF_NORTC_MDAY 1 #define FF_NORTC_MDAY 1
#define FF_NORTC_YEAR 2019 #define FF_NORTC_YEAR 2020
/* The option FF_FS_NORTC switches timestamp functiton. If the system does not have /* The option FF_FS_NORTC switches timestamp functiton. If the system does not have
/ any RTC function or valid timestamp is not needed, set FF_FS_NORTC = 1 to disable / 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 / the timestamp function. Every object modified by FatFs will have a fixed timestamp