fat32init.c

在51下的外挂硬盘和FLASH的MP3方案程序以及原理图

#ifndef _FAT32_DEFINE
 #include "FAT32.c"
#endif

void FAT32Init(void);

void FAT32Init(void)
{
	register BYTE i;

	DPT = (struct DPTStr *)(DiskBuffer+0x1be);			//分区表结构指针
	BOOTSEC = (struct BootSecStr *)(DiskBuffer);		//引导扇区结构指针
	FSI = (struct FAT32FSInfoStr *)(DiskBuffer);		//FAT32扩展信息
	sDIR = (struct FAT32SDirStr *)(DiskBuffer);		//FAT目录结构指针
	lDIR = (struct FAT32LDirStr *)(DiskBuffer);		//FAT目录结构指针

	for(i=0;i<FAT32_MAX_FCB;i++)
	{
		FCB[i].FileName[0]=0;
		FCB[i].Size=0;
		FCB[i].FirstCluster=0;
		FCB[i].LastCluster=0;
		FCB[i].ClusSecCnt=0;
		FCB[i].ByteCnt=0;
	}
}