fat32readcluster.c

爱特梅尔的mp3解码模块源代码之2

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

void FAT32ReadCluster(DWORD *Cluster);

void FAT32ReadCluster(DWORD *Cluster)
{
	if (FAT32.ClusSecCnt==FAT32.SecPerClus)			//读下一簇
	{
		*Cluster=FAT32NextCluster(*Cluster);
		IDEReadSector(ClusterToSector(*Cluster));
		FAT32.ClusSecCnt=1;
	}
	else if (FAT32.ClusSecCnt==0)					//读第一簇
	{
		IDEReadSector(ClusterToSector(*Cluster));
		FAT32.ClusSecCnt++;
	}
	else										//读当前簇下一扇区
	{
		IDEReadSector(IDE.CurrentSector+1);
		FAT32.ClusSecCnt++;
	}
}