ata.h

ATMEL 89c51sndc mp3外接硬盘源码

/*H**************************************************************************
* NAME:         ata.h         
*----------------------------------------------------------------------------
* Copyright (c) 2002 Atmel.
*----------------------------------------------------------------------------
* RELEASE:      snd1c-demo-hdd-0_2_0      
* REVISION:     1.1     
*----------------------------------------------------------------------------
* PURPOSE:
* This file contains the ATA/IDE norm definitions for ATA
*****************************************************************************/

#ifndef _ATA_H_
#define _ATA_H_

/*_____ I N C L U D E S ____________________________________________________*/


/*_____ M A C R O S ________________________________________________________*/

#define ATA_CMD_READ_SECTOR                              ((Byte)0x20)
#define ATA_CMD_READ_LONG                                ((Byte)0x22)
#define ATA_CMD_WRITE_SECTOR                             ((Byte)0x30)
#define ATA_CMD_WRITE_LONG                               ((Byte)0x32)

#define ATA_CMD_EXECUTE_DEVICE_DIAGNOSTIC                ((Byte)0x90)
#define ATA_CMD_IDENTIFY_DRIVE                           ((Byte)0xEC)
#define ATA_CMD_READ_MULTIPLE                            ((Byte)0xC4)
#define ATA_CMD_WRITE_MULTIPLE                           ((Byte)0xC5)
#define ATA_CMD_SET_FEATURES                             ((Byte)0xEF)

#define ATA_RESET_CMD                                    ((Byte)0xFC)

#define ATA_LBA_MODE                                     ((Byte)0xE0)
/* LBA  : B6 = 1    -> LBA mode 
          B5 = 1 
          B4 = 1    -> Drive number */
 #define ATA_CHS_MODE                                     ((Byte)0xA0)

/* Chip Detect Pin definition */
#define Hdd_disk_size()         ((Uint32)(hdd_mem_size))
#define Hdd_disk_size_0()       (((Byte *)&hdd_mem_size)[0])
#define Hdd_disk_size_1()       (((Byte *)&hdd_mem_size)[1])
#define Hdd_disk_size_2()       (((Byte *)&hdd_mem_size)[2])
#define Hdd_disk_size_3()       (((Byte *)&hdd_mem_size)[3])
/* Size of a block = one sector = 512 bytes */
#define Hdd_block_size()        ((Uint32)512)
#define Hdd_block_size_0()      ((Byte)(Hdd_block_size() >> 24))
#define Hdd_block_size_1()      ((Byte)(Hdd_block_size() >> 16))
#define Hdd_block_size_2()      ((Byte)(Hdd_block_size() >> 8))
#define Hdd_block_size_3()      ((Byte)Hdd_block_size())


/*_____ D E F I N I T I O N ________________________________________________*/

extern  xdata   Uint32  ata_mem_size;

/*_____ D E C L A R A T I O N ______________________________________________*/

bit     hdd_init(void);                 /* init media */

Uint16  ata_identify_device();          /* give information about media */

bit     hdd_read_sector(Uint16);        /* read n sectors from media to usb */
bit     hdd_write_sector(Uint16);       /* write n sectors to media from usb */

bit     hdd_read_open(Uint32, Byte);    /* write open function */
bit     hdd_write_open(Uint32, Byte);   /* read open function */
void    hdd_read_close();               /* read close function */
void    hdd_write_close();              /* write close function */

Byte    hdd_read_byte(void);            /* read one byte from media */
Uint32  hdd_read_long_big_endian(void); /* read one long big endian coded data */
bit     hdd_write_byte(Byte);           /* write one byte to media */
bit     hdd_check_presence();           /* check disk presence */
void    hdd_read_one_sector();          /* read one sector in global buffer */
void    hdd_write_one_sector();         /* read one sector in global buffer */

s_format   xdata  *hdd_format(void);    /* give format information about media */

extern  void  hdd_download_data_usb(void);    /* optimized download data from usb */
extern  void  ata_load_sector(void);          /* optimized load data */
extern  void  ata_download_sector(void);      /* optimized download data */


#endif  /* _ATA_H_ */