/*************************************************************/
/*???????????????????FAT操作函數庫???????????????????????????*/
/*??環境WinAVR?20060421??????????????????????????????????????*/
/*??作者：Bozai（章其波）????????????????????????????????????*/
/*??E-mail：sudazqb@163.com??????????????????????????????????*/
/*??2007年2月13日????????????????????????????????????????????*/
/*************************************************************/
/*??20071208:?modify?codes?for?ARM?platform?（AT91SAM7S256）??*/
/*??20071109:?add?&?modify?function?for?any?directory?music?file?playing?*/
/*??20071103:?add?function?for?lyric?display?*/
/*History:?2007年2月13日?????????????????????????????????????*/
/*			添加了適合于RAM豐富的AVR單片機操作?的FAT表函數	?*/
/*	改進了查找FAT表的函數使在硬盤操作時不需頻繁去讀FAT表.???*/
/*????????	注:?只適合RAM足夠多的單片機??????????????????????*/
/*************************************************************/

#include“FAT.h“

DWORD?FirstDirClust;????//first?directory?cluster
DWORD?FirstDataSector;	//?The?first?sector?number?of?data
WORD?BytesPerSector;	//?Bytes?per?sector
DWORD?FATsectors;		//?The?amount?sector?a?FAT?occupied
WORD?SectorsPerClust;	//?Sector?per?cluster
DWORD?FirstFATSector;	//?The?first?FAT?sector
DWORD?FirstDirSector;	//?The?first?Dir?sector
DWORD?RootDirSectors;	//?The?sector?number?a?Root?dir?occupied?
DWORD?RootDirCount;		//?The?count?of?directory?in?root?dir
BYTE?FAT32_Enable;


#if?FAT_BUFFERED

	BYTE?TABLE_READ?=?0;
	DWORD?START_CLUSTER?=?0x0ffffff8;	//when?the?mcu?has?large?ram
	BYTE?FAT_TABLE[512];				//when?the?mcu?has?large?ram
#endif

BYTE?LongNameBuffer[MAX_LONG_NAME_SIZE];
BYTE?LongNameFlag?=?0;

BYTE?（*?FAT_ReadSector）（DWORDBYTE?*）;
BYTE?（*?FAT_WriteSector）（DWORDBYTE?*）;
DWORD?（*?FAT_ReadCapacity）（void）;

//函數指針指向sd卡的讀寫函數
//BYTE?（*?FAT_ReadSector）（DWORD?sector?BYTE?*?buffer）?=?CH375_ReadOneSector;
//BYTE?（*?FAT_WriteSector）（DWORD?sector?BYTE?*?buffer）?=??CH375_WriteOneSector;
//BYTE?（*?FAT_ReadSector）（DWORD?sector?BYTE?*?buffer）=MMC_SD_ReadSingleBlock;//device?read
//BYTE?（*?FAT_WriteSector）（DWORD?sector?BYTE?*?buffer）=MMC_SD_WriteSingleBlock;//device?write

struct?FileInfoStruct?FileInfo;//temporarily?buffer?for?file?information



//FAT初始化，不含SD的初始化，用之前應先調用sd的初始化
BYTE?FAT_Init（）//Initialize?of?FAT??need?initialize?SD?first
{
	struct?bootsector710?*bs??=?0;
	struct?bpb710Bytes?*bpb?=?0;
	struct?partrecordBytes?*pr??=?0;

	BYTE?buffer[512];
	DWORD?hidsec=0;
	DWORD?Capacity;

	Capacity?=?FAT_ReadCapacity（）;
	if（Capacity<0xff）return?1;
	if（FAT_ReadSector（0buffer））return?1;
	bs?=?（struct?bootsector710?*）buffer;
	pr?=?（struct?partrecordBytes*）（（struct?partsector*）buffer）->psPart;//first?partition
	hidsec?=?get32_little（pr->prStartLBA）;//the?hidden?sectors
	if（hidsec?>=?Capacity/512）
	{
		hidsec?=?0;
	}
	else?
	{
		if（FAT_ReadSector（get32_little（pr->prStartLBA）buffer））return?1;//read?the?bpb?sector
		bs?=?（struct?bootsector710?*）buffer;
		if（bs->bsJump[0]!=0xE9?&&?bs->bsJump[0]!=0xEB）

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????4536320??2010-03-14?10:20??mb_STM32F103RBT6.ddb

?????文件????1308672??2013-04-02?15:46??STM32F103RBT6.ddb

?????文件??????21149??2010-03-15?18:46??my_project\LCD12864_ST7920.c

?????文件??????27178??2010-03-15?19:38??my_project\main.c

?????文件???????2042??2010-03-05?10:18??my_project\stm32f10x_it.h

?????文件????????162??2010-02-13?22:04??my_project\led.eww

?????文件??????47441??2010-03-15?15:48??my_project\gpio_led.ewp

?????文件??????37926??2010-02-14?16:11??my_project\gpio_led.ewd

?????文件??????45190??2010-03-15?20:02??my_project\gpio_led.dep

?????文件??????16309??2009-09-28?19:51??my_project\startup_stm32f10x_cl.s

?????文件??????16709??2009-09-28?19:51??my_project\startup_stm32f10x_hd.s

?????文件??????12333??2009-09-28?19:51??my_project\startup_stm32f10x_ld.s

?????文件??????12594??2009-09-28?19:51??my_project\startup_stm32f10x_md.s

?????文件???????1343??2010-03-15?19:31??my_project\gpio_led.icf

?????文件???????2772??2010-03-07?19:11??my_project\MMC_SD.h

?????文件???????2371??2010-03-15?18:39??my_project\settings\gpio_led.cspy.bat

?????文件????????705??2010-03-15?20:02??my_project\settings\gpio_led.dni

?????文件???????6843??2010-03-15?20:02??my_project\settings\led.wsdt

?????文件???????5587??2010-03-15?20:02??my_project\settings\gpio_led.dbgdt

?????文件?????291920??2010-03-15?20:00??my_project\Debug\Exe\gpio_led.out

?????文件??????48404??2010-03-15?20:00??my_project\Debug\Exe\gpio_led.hex

?????文件??????45708??2010-02-13?22:38??my_project\Debug\Obj\startup_stm32f10x_cl.o

?????文件??????45896??2010-02-13?22:38??my_project\Debug\Obj\startup_stm32f10x_hd.o

?????文件??????31100??2010-02-13?22:38??my_project\Debug\Obj\startup_stm32f10x_ld.o

?????文件??????34248??2010-02-13?22:38??my_project\Debug\Obj\startup_stm32f10x_md.o

?????文件???????2435??2010-03-15?20:00??my_project\Debug\Obj\gpio_led.pbd

?????文件??????12036??2010-03-06?18:29??my_project\Debug\Obj\misc.o

?????文件??????67780??2010-03-06?18:29??my_project\Debug\Obj\stm32f10x_adc.o

?????文件??????23628??2010-03-06?18:29??my_project\Debug\Obj\stm32f10x_bkp.o

?????文件??????42804??2010-03-06?18:29??my_project\Debug\Obj\stm32f10x_can.o

............此處省略153個文件信息