248633370 / vinxfs

Small FAT16/FAT32 filesystem for ATMega8 (AVR / STM / PIC) with create/delete file

It is an open source software to implement FAT file system to small embedded systems. This is a free software and is opened for education, research and commercial developments under license policy of following trems.

(C) 2013 vinxru

(C) 2010, ChaN, all right reserved.

*** Features ***

• Very small RAM consumption (64 bytes work area + 33 bytes for second opened file + certain stack)
• 512 byte temporary buffer. Used only while the function run.
• Very small code size. Full version ~6400 bytes (80% of FLASH AMEGA8),
• Single volume and two opened files.
• File write function with out restrictions.
• Can create, delete, rename, resize, move, file and directory

*** Application Interface ***

VinxFS module provides following functions:

• fs_init - Mount a volume
• fs_check - If user changed a drive, when mount it
• fs_opendir - Open a directory
• fs_readdir - Read a directory item
• fs_delete - Delete a file or directory
• fs_open - Open a File
• fs_openany - Open a file or directory
• fs_create - Create a file;
• fs_createdir - Create a directory
• fs_move0, fs_move - Move or rename a file or directory
• fs_lseek - Move read/write pointer
• fs_tell - Get read/write pointer
• fs_getfilesize - Get file size
• fs_read0, fs_read - Read file
• fs_write - Write File
• fs_write_eof - Truncate file
• fs_write_start, fs_write_end - Write temporary buffer to a file
• fs_swap - Swap opened files (work with two files)
• fs_gettotal - Get total drive space
• fs_getfree - Get free drive space

*** Drive I/O Interface ***

Since the VinxFS module is completely separated from disk I/O layer, it requires following functions to lower layer to read the physical disk.

• sd_init - Initialize disk drive
• sd_check - Check if user changed a drive
• sd_read - Read partial sector
• sd_write512 - Write sector

The module contains driver SD Card connected at ATMega8