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

BYTE FAT32ChangeDirectory(CHAR *DirName);

BYTE FAT32ChangeDirectory(CHAR *DirName)
{
	register DWORD cluster;
	register BYTE i;

	i=FAT32FindDIREntry(DirName);
	if (i<16&&(sDIR[i].Attr&FAT32_ATTR_DIRECTORY))								//找到目錄入口
	{
		cluster=(MEMSwap16(sDIR[i].FstClusHI)<<16)|MEMSwap16(sDIR[i].FstClusLO);
		FAT32.CurrentDirectory=cluster;
		return(0);
	}
	else if (!(sDIR[i].Attr&FAT32_ATTR_DIRECTORY)) return(FAT32_ERR_NOT_DIR); 	//目錄項不是一個目錄入口
	else return(FAT32_ERR_DIR_NOT_FOUND);										//目錄入口為找到
}