cf.h

源程序是在VisualDSP环境下开发出来的

//cf.h

//define  cf card base address
#define CF_BASE  0x0B000000

/****************** cf card register address definition ****************/
/* (1) ATA data address */
#define DATA          *((volatile unsigned short *) (CF_BASE + 0x0010))

/* (2) ATA status address */
#define ERRORREG      *((volatile unsigned char *) (CF_BASE + 0x0011))
#define FEATURES      *((volatile unsigned char *) (CF_BASE + 0x0011))

/* (3) ATA device sector */
#define SECTOR_COUNT  *((volatile unsigned char *) (CF_BASE + 0x0012))
#define SECTOR_NUMBER *((volatile unsigned char *) (CF_BASE + 0x0013))

/* (4) ATA cylinder information */
#define CYLINDER_LOW  *((volatile unsigned char *) (CF_BASE + 0x0014))
#define CYLINDER_HIGH *((volatile unsigned char *) (CF_BASE + 0x0015))

/* (5) ATA device information head */
#define DEV_HEAD      *((volatile unsigned char *) (CF_BASE + 0x0016))
#define DEV_CONTROL   *((volatile unsigned char *) (CF_BASE + 0x000E))
#define ATAALTSTATUS  *((volatile unsigned char *) (CF_BASE + 0x000E))

/* (6) ATA status */
#define COMMAND       *((volatile unsigned char *) (CF_BASE + 0x0017))
#define ATASTATUS     *((volatile unsigned char *) (CF_BASE + 0x0017))

/* define operation code for setting ATA port address*/
#define READ_SECTORS    0x20	/* 0x 0010 0000 */
#define WRITE_SECTORS   0x30	/* 0x 0011 0000 */  
#define READ_MULTIPLE   0xC4	/* 0x 1100 0100 */
#define WRITE_MULTIPLE  0xC5	/* 0x 1100 0101 */
#define SET_MULTIPLE    0xC6	/* 0x 1100 0110 */
#define FLUSH_CACHE     0xE7	/* 0x 1110 0111 */
#define IDENTIFY_DEVICE 0xEC	/* 0x 1110 1100 */
#define SET_FEATURES    0xEF	/* 0x 1110 1111 */

/* ATASTATUS toggle bit */
#define ERRBIT  0x01	/* 0x 0000 0001 */ 
#define DRQBIT  0x08	/* 0x 0000 1000 */
#define DRDYBIT 0x40	/* 0x 0100 0000 */
#define BSYBIT  0x80	/* 0x 1000 0000 */

/* ATA lba mode for setting DEV_HEAD */
#define LBAMODE 0x40	/* 0x 0100 0000 */


/* while{} loop times : Timeouts for waiting for device ready signals*/
#define  LOOPTIME	1000000

struct PartitionTable
{
	unsigned char BootId;
	unsigned char PartitionType;
	unsigned int PartitionFirstSector;
	unsigned int PartitionSectorNum;
};

struct BPBTable
{
	unsigned short BytePerSector;
	unsigned char SectorPerGroup;
	unsigned short SectorReserved;
	unsigned char FATNum;
	unsigned short DFBNum;
	unsigned short SectorPerFAT;
	unsigned short SectorPerHead;
	unsigned short HeadNum;
	unsigned int SectorHide;
	unsigned int LogicTotalSector;
};

struct FileReg
{
	unsigned char FileName[8];
	unsigned char FileExt[3];
	unsigned char Attrib;
	unsigned short LastTime;
	unsigned short LastDate;
	unsigned short BeginGroup;
	unsigned int FileLength;
};

struct FAT16LogicPartition
{
	struct BPBTable bpb;
	unsigned int FAT1BeginSector;
	unsigned int DFTBeginSector;
	unsigned int DFTSectors;
	unsigned int DATABeginSector;
};


/*********************** may be changed by user *******************/
//define BeginGroup of the file to be created
#define NEWBEGINGRP 2

//define the cluster count of the file to be created
#define CLUSNUMS 625//20 frames,625 rows,1 row(360*4B) occupies 1 cluster 

//define the attribute of the file
#define ATTRIB 32

//define parameters of the file to be created
#define NEWYEAR 2005
#define NEWMONTH 3
#define NEWDAY 23
#define NEWHOUR 14
#define NEWMINUTE 29
#define NEWSECOND 48    //only be even

//define the length of the file to be added
#define ADDLENGTH 360*4//1 row video data

//define global variables 
unsigned char uRcvBuffer[512],uRcvBuffer1[512];//used for data transfer
extern unsigned char AddFileBuf[ADDLENGTH];//used for the content of the file to be added
unsigned short atadevinfo[256];
static unsigned short errcount = 0;
static unsigned char status = 0;
static unsigned int groupnum = 0;
static struct PartitionTable MBRTable;
extern struct FAT16LogicPartition CPartition;
//static struct FAT16LogicPartition CPartition;
static struct FileReg OperatorFile, myfile, mynewfile, myaddfile;
//unsigned int uError = 0;
unsigned char temp[512];
//unsigned int DFTSectors = 0;//the count of sector which DFT occupis
 
//define functions 
void InitDSP();
unsigned char InitCF();
unsigned char InitMBR();
unsigned char InitCPartition();
unsigned char atadev_get_block(unsigned int lba, unsigned char sector_count, unsigned char* buffer);
unsigned char atadev_put_block(unsigned int lba, unsigned char sector_count, unsigned char* buffer);
unsigned char Check_NoRequest();
unsigned char Check_HaveRequest();
unsigned char Check_DateReady();
unsigned char NewFile();
unsigned char WriteNewDFT();

void cf_init();

unsigned char AddToFile(unsigned int *Ptr_add,unsigned int line_in_cnt);//just can add data to the new created file
unsigned char AddGroup(unsigned int dstgroup,unsigned int ClusNums);

//void cf_irq();