IDE/ATA Interface Driver (ata.c)
[Drivers (for external hardware)]

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Detailed Description

 #include "ata.h" 

Overview

This library provides an interface from AVR processors to IDE/ATA devices. Such devices can include hard disks, CF memory cards, and PCMCIA disks and memory devices.  The library supports automatic drive identification and sector-level reading and writing.  Some minimal address decoding hardware is required to use this interface. For an example of interface hardware, see the Procyon MP3 Player docs here: http://www.procyonengineering.com/embedded/procyonmp3/index.html. Future revisions if this library may include a direct hardware-less interface option.

Note:

This code is quite old and in some level of disrepair. Nonetheless, it works quite well.

Data Structures
struct	typeDriveInfo
Defines
#define	DRIVE0   0
#define	STANDBY   0
#define	SLEEP   1
#define	IDLE   2
#define	ATA_SR_BSY   0x80
#define	ATA_SR_DRDY   0x40
#define	ATA_SR_DF   0x20
#define	ATA_SR_DSC   0x10
#define	ATA_SR_DRQ   0x08
#define	ATA_SR_CORR   0x04
#define	ATA_SR_IDX   0x02
#define	ATA_SR_ERR   0x01
#define	ATA_ER_UNC   0x40
#define	ATA_ER_MC   0x20
#define	ATA_ER_IDNF   0x10
#define	ATA_ER_MCR   0x08
#define	ATA_ER_ABRT   0x04
#define	ATA_ER_TK0NF   0x02
#define	ATA_ER_AMNF   0x01
#define	ATA_HEAD_USE_LBA   0x40
#define	ATA_CMD_READ   0x20
#define	ATA_CMD_READNR   0x21
#define	ATA_CMD_WRITE   0x30
#define	ATA_CMD_WRITENR   0x31
#define	ATA_CMD_IDENTIFY   0xEC
#define	ATA_CMD_RECALIBRATE   0x10
#define	ATA_CMD_SPINDOWN   0xE0
#define	ATA_CMD_SPINUP   0xE1
#define	ATA_CMD_STANDBY_5SU   0xE2
#define	ATA_CMD_IDLE_5SU   0xE3
#define	ATA_CMD_SLEEP   0xE6
#define	ATA_CMD_STANDBY_01SU   0xF2
#define	ATA_CMD_IDLE_01SU   0xF3
#define	ATA_DISKPARM_CLYS   0x03A6
#define	ATA_DISKPARM_HEADS   0x10
#define	ATA_DISKPARM_SECTORS   0x11
#define	ATA_IDENT_DEVICETYPE   0
#define	ATA_IDENT_CYLINDERS   1
#define	ATA_IDENT_HEADS   3
#define	ATA_IDENT_SECTORS   6
#define	ATA_IDENT_SERIAL   10
#define	ATA_IDENT_MODEL   27
#define	ATA_IDENT_FIELDVALID   53
#define	ATA_IDENT_LBASECTORS   60
#define	ATA_DISKMODE_SPINDOWN   0
#define	ATA_DISKMODE_SPINUP   1
#define	ATA_DISKMODE_SETTIMEOUT   2
#define	ATA_DISKMODE_SLEEP   3
Functions
void	ataInit (void)
void	ataDriveInit (void)
void	ataDriveSelect (u08 DriveNo)
void	ataSetDrivePowerMode (u08 DriveNo, u08 mode, u08 timeout)
u08	ataReadByte (u08 reg)
void	ataWriteByte (u08 reg, u08 data)
void	ataShowRegisters (unsigned char DriveNo)
u08	ataSWReset (void)
void	ataDiskErr (void)
void	ataPrintSector (u08 *Buffer)
void	ataReadDataBuffer (u08 *Buffer, u16 numBytes)
void	ataWriteDataBuffer (u08 *Buffer, u16 numBytes)
u08	ataStatusWait (u08 mask, u08 waitStatus)
unsigned char	ataReadSectorsCHS (unsigned char Drive, unsigned char Head, unsigned int Track, unsigned char Sector, unsigned int numsectors, unsigned char *Buffer)
unsigned char	ataWriteSectorsCHS (unsigned char Drive, unsigned char Head, unsigned int Track, unsigned char Sector, unsigned int numsectors, unsigned char *Buffer)
unsigned char	ataReadSectorsLBA (unsigned char Drive, unsigned long lba, unsigned int numsectors, unsigned char *Buffer)
unsigned char	ataWriteSectorsLBA (unsigned char Drive, unsigned long lba, unsigned int numsectors, unsigned char *Buffer)
unsigned char	ataReadSectors (unsigned char Drive, unsigned long lba, unsigned int numsectors, unsigned char *Buffer)
unsigned char	ataWriteSectors (unsigned char Drive, unsigned long lba, unsigned int numsectors, unsigned char *Buffer)

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