X-Git-Url: http://cloudbase.mooo.com/gitweb/z180-stamp.git/blobdiff_plain/7b78a5a287827db9e9b16286f3604aef69b37c5c..70702af1370e44e32fb2c3c507e4759a187b4fe5:/fatfs/doc/00index_e.html
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FatFs is a generic FAT file system module for small embedded systems. The FatFs module is written in compliance with ANSI C (C89) and completely separated from the disk I/O layer. Therefore it is independent of the platform. It can be incorporated into small microcontrollers with limited resource, such as 8051, PIC, AVR, ARM, Z80, 78K and etc. Also Petit FatFs module for tiny microcontrollers is available hereâ.
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FatFs is a generic FAT/exFAT file system module for small embedded systems. The FatFs module is written in compliance with ANSI C (C89) and completely separated from the disk I/O layer. Therefore it is independent of the platform. It can be incorporated into small microcontrollers with limited resource, such as 8051, PIC, AVR, ARM, Z80, 78K and etc. Also Petit FatFs module for tiny microcontrollers is available here.
Features
- - Windows compatible FAT file system.
+ - Windows compatible FAT/exFAT file system.
- Platform independent. Easy to port.
- - Very small footprint for code and work area.
- - Various configuration options:
+
- Very small footprint for program code and work area.
+ - Various configuration options to support for:
- Multiple volumes (physical drives and partitions).
- Multiple ANSI/OEM code pages including DBCS.
- - Long file name support in ANSI/OEM or Unicode.
- - RTOS support for multi-task operation.
- - Multiple sector size support upto 4KB.
- - Read-only, minimized API, I/O buffer and etc...
+ - Long file name in ANSI/OEM or Unicode.
+ - exFAT file system.
+ - RTOS envilonment.
+ - Fixed or variable sector size.
+ - Read-only, optional API, I/O buffer and etc...
@@ -42,55 +43,75 @@
Application Interface
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FatFs module provides following functions to the applications. In other words, this list describes what FatFs can do to access the FAT volumes.
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- - f_mount - Register/Unregister a work area
- - f_open - Open/Create a file
- - f_close - Close an open file
- - f_read - Read file
- - f_write - Write file
- - f_lseek - Move read/write pointer, Expand file size
- - f_truncate - Truncate file size
- - f_sync - Flush cached data
- - f_forward - Forward file data to the stream
- - f_stat - Check existance of a file or sub-directory
- - f_opendir - Open a directory
- - f_closedir - Close an open directory
- - f_readdir - Read a directory item
- - f_mkdir - Create a sub-directory
- - f_unlink - Remove a file or sub-directory
- - f_chmod - Change attribute
- - f_utime - Change timestamp
- - f_rename - Rename/Move a file or sub-directory
- - f_chdir - Change current directory
- - f_chdrive - Change current drive
- - f_getcwd - Retrieve the current directory
- - f_getfree - Get free space on the volume
- - f_getlabel - Get volume label
- - f_setlabel - Set volume label
- - f_mkfs - Create a file system on the drive
- - f_fdisk - Divide a physical drive
- - f_gets - Read a string
- - f_putc - Write a character
- - f_puts - Write a string
- - f_printf - Write a formatted string
- - f_tell - Get current read/write pointer
- - f_eof - Test for end-of-file on a file
- - f_size - Get size of a file
- - f_error - Test for an error on a file
+ - File Access
+
+
+ - Directory Access
+
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+ - File/Directory Management
+
+ - f_stat - Check existance of a file or sub-directory
+ - f_unlink - Remove a file or sub-directory
+ - f_rename - Rename or move a file or sub-directory
+ - f_chmod - Change attribute of a file or sub-directory
+ - f_utime - Change timestamp of a file or sub-directory
+ - f_mkdir - Create a sub-directory
+ - f_chdir - Change current directory
+ - f_chdrive - Change current drive
+ - f_getcwd - Retrieve the current directory and drive
+
+
+ - Volume Management
+
+ - f_mount - Register/Unregister a work area of a volume
+ - f_mkfs - Create an FAT volume on the logical drive
+ - f_fdisk - Create logical drives on the physical drive
+ - f_getfree - Get total size and free size on the volume
+ - f_getlabel - Get volume label
+ - f_setlabel - Set volume label
+
+
Device Control Interface
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Since the FatFs module is a file system layer, it is completely separated from physical devices, such as memory card, harddisk and any type of storage devices. FatFs accesses the storage device via a simple interface described below. The low level device control module is not a part of FatFs module. It is provided by implementer. Also sample implementations for some platforms are available in the downloads.
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Since the FatFs module is a file system layer, it is completely separated from the physical devices, such as memory card, harddisk and any type of storage device. FatFs accesses the storage devices via a simple interface shown below. The low level device control module is not a part of FatFs module. It is provided by implementer. Also sample implementations for some platforms are available in the downloads.
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Resources
The FatFs module is a free software opened for education, research and development. You can use, modify and/or redistribute it for personal projects or commercial products without any restriction under your responsibility. For further information, refer to the application note.
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Benchmark 1 (ATmega1284/20MHz with MMC via USART in SPI, CFC via GPIO)
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Benchmark 2 (LPC2368/72MHz with MMC via MCI)