fatreadcluster.c

c51文件系统源码

#ifndef _FAT_DEFINE
 #include "FAT.c"
#endif

void FATReadCluster(struct FATClusterStr *Cluster,BYTE *Buffer);

void FATReadCluster(struct FATClusterStr *Cluster,BYTE *Buffer)
{
	if (Cluster->SecOffset==0)					//读第一簇
		Cluster->Sector=ClusterToSector(Cluster->Cluster);
	StorageMedia.ReadSector(Cluster->Sector,Buffer);

	Cluster->SecOffset++;
	if (Cluster->SecOffset==FAT.SecPerClus)			//读下一簇
	{
		FATNextCluster(&(Cluster->Cluster));
		Cluster->SecOffset=0;
	}
	else
		Cluster->Sector++;

}