fat32_buffer.h

来自「hd driver for S3C44B0。44b0 + ide + fat32」· C头文件 代码 · 共 37 行

#ifndef FAT32BUFFER
#define  FAT32BUFFER

//-----------------------------------------------------------------------------
// Max buffer size variable
//-----------------------------------------------------------------------------
#define bufferlength 		50

typedef struct 
{
	int first;						// The head of the circular buffer
	int last;						// The tail of buffer
	UI32 buffer[bufferlength+1];	// The data storing element
	int count;						// The data counter
	int clustersused;				// Counts how many times a cluster has been 
									// removed from the buffer
	UI32 lastcluster;				// Last cluster read
	UI8 EOFdetected;
} FATBuffer_t;

extern FATBuffer_t FATBuffer;

//-----------------------------------------------------------------------------
// Prototypes
//-----------------------------------------------------------------------------
void DEBUG_PrintFATBuffer(void);
void FATBuffer_FillFATBuffer(UI32 startcluster);
void FATBuffer_BufferInit(void);
int FATBuffer_AddtoTail(UI32 data);
UI32 FATBuffer_RemovefromHead(void);
void FATBuffer_ReFillFATBuffer(void);
int FATBuffer_SectorReaderBUFFERED(UI32 Startcluster, UI32 offset, int firstuse);


#endif