fatdef.c

一个小型的FAT文件系统,支持FAT12/16和目录

#include	"fatdef.h"
//#include	"smd.h"
//#include	"ramdisk.h"
static char _array[(long)256 * 512]={

0xE9,0x00,0x00,0x20,0x20,
0x20,0x20,0x20,0x20,0x20,
0x20,0x00,0x02,0x01,0x01,
0x00,0x02,0x80,0x00,0x00,
0x01,0xF8,0x01,0x00,0x04,
0x00,0x04,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x20,0x20,
0x20,0x20,0x20,0x20,0x20,
0x20,0x20,0x20,0x20,0x46,
0x41,0x54,0x31,0x32,0x20,
0x20,0x20,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,
0x55,0xAA,0xF8,0xFF,0xFF,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00
};


static int RAMReadSector(ULONG Sector, USHORT Unit, UCHAR *pBuffer)
{
   memcpy(pBuffer,(((unsigned char*)_array) + Sector*SECTOR_SIZE),SECTOR_SIZE);
   return 0;
}

static int RAMWriteSector(ULONG Sector, USHORT Unit, UCHAR*pBuffer)
{
    memcpy((((unsigned char*)_array) + Sector*SECTOR_SIZE),pBuffer,SECTOR_SIZE);
    return 0;
}
static int RAMInitDisk(void)
{
    return 0;
}
/* device driver table */
const DRIVER_API	driverAPI[] = 
{
	/*{
		SMD_Init_SmartMedia,
		SMD_Media_ReadSector,
		SMD_Media_WriteSector
	},*/
	{
		RAMInitDisk,
		RAMReadSector,
		RAMWriteSector
	}
};



/********************************************************************************
	CONFIGURATION DATA TABLE
 ********************************************************************************/
const FAT_CFG	fatConfig = {
	DEFAULT_YEAR,
	DEFAULT_MONTH,
	DEFAULT_DAY,
	DEFAULT_HOUR,
	DEFAULT_MINUTE,
	DEFAULT_SECOND,
	CACHE_NUM
};

/********************************************************************************
	RESOURCE DEFINITION
 ********************************************************************************/
CACHE_RES	cacheRes[CACHE_NUM];