Preface: I transplanted FATS of STM32F1 code has been uploaded to my resources, if necessary you can click on the following link: https://download.csdn.net/download/qq_40831778/11916818

I. Overview

1, the file system Introduction:

(1) file system: institutional management software and store file information.

(2) commonly used file systems:

FAT/FATFS
NTFS (file-based security system, is a unique structure Wundow NT file system used.
CDFS: CDFS file system is most CD

2, FATFS File System Introduction:

FATFS is a completely free and open source FAT file system module, designed specifically for small embedded systems design, written entirely in standard C language, have good hardware platform independence, can be ported to 8051, PIC, ARM and other microcontrollers just do a simple modification. It supports FAT12, FAT16, FATI32, support for multiple storage media; an independent buffers, multiple files can be read / write, and especially for 8-bit microcontrollers and 16-bit microcontroller optimized.

3, FATFS file system features:

Window-compatible FAT file system (supports FAT12 / FAT16 / FAT32).
Less code, and high efficiency.
Platform-independent, portable simple written entirely in C language.
More configuration options: to support multi-volume (physical drive or partition, up to 10 volumes), a plurality of ANSI / OEM code page, supports long filenames, the RTOS support, support for multiple sector size.

4, document presents the main file system:

file name	Features	Explanation
ffconf.h	FATFS module configuration file	You need to configure the parameters according to the needs
ff.h	FATFS and application modules common to include files	no need for correction
ff.c	FATFS module source code	no need for correction
diskio.h	FATFS and disk I / O module comprises a common file	no need for correction
diskio.c	FATFS and disk I / O module interface layer file	Platform-dependent code, you need to write a function according to user storage medium
interger.h	Data type definitions	And compiler-related

Second, start transplants

1, we open download FATS good source, there will be two folders Normally, we open the src folder, this folder which we need FATS source,

2, we note that there is also a src folder, this is an optional external features (such as support for Chinese, etc.). Generally, we use the Chinese, it will add to the project cc926.c inside just fine.

3, we need to add the source file to the STM32, Normally, we just ff.c, cc936.c, diskio.c, added to the project inside just fine. , After a good start configuration file.

4, ffconf.h configuration instructions

This ffconf.h header file which is about FATFS various settings, we can cut FATFS according to their needs, we have reached the standard they want. We look at it all those settings:

1) _FS_TINY

This setting is configured to use the standard mode, or minor mode. We use the standard mode, set here: 0.

2) _FS_READONLY

Whether to use read-only mode, we choose to read and write. Set: 0.

3) _FS_MINIMIZE

This setting is to select whether to cut out some of the functions specific to those cropping, you can view the following setup instructions, full-featured model that we used here. Set: 0.

4) _USE_STRFUNC

This is used to set whether to support the string class operation, we choose to use. To: 1.

5) _USE_MKFS

Use the format to use, here we choose to use. To: 1.

6) _USE_FASTSEEK

Use enable fast positioning, we choose to use. To: 1.

7) _USE_LABEL

Whether to enable disk label function. Use can also, do not use can be. We use here. To: 1.

8) _USE_FORWARD

This is set in the TINY model, here we use the standard mode, ignore it.

9) _CODE_PAGE

这个用于设置语言类型。我们使用的中文。设置为：936