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HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> tml><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"> itle>Procyon AVRlib: ata.c Source File</title> href="dox.css" rel="stylesheet" type="text/css"> Generated by Doxygen 1.4.2 --> class="qindex"><a class="qindex" href="main.html">Main Page</a> | <a class="qindex" href="modules.html">Modules</a> | <a class="qindex" href="annotated.html">Data Structures</a> | <a class="qindex" href="dirs.html">Directories</a> | <a class="qindex" href="files.html">File List</a> | <a class="qindex" href="functions.html">Data Fields</a> | <a class="qindex" href="globals.html">Globals</a> | <a class="qindex" href="pages.html">Related Pages</a></div> 1>ata.c</h1><a href="ata_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment">00001 /*! \file ata.c \brief IDE-ATA hard disk interface driver. */ //***************************************************************************** // // File Name : 'ata.c' // Title : IDE-ATA interface driver for hard disks // Author : Pascal Stang // Date : 11/22/2000 // Revised : 4/19/2003 // Version : 0.3 // Target MCU : Atmel AVR Series // Editor Tabs : 4 // // NOTE: This code is currently below version 1.0, and therefore is considered // to be lacking in some functionality or documentation, or may not be fully // tested. Nonetheless, you can expect most functions to work. // // This code is distributed under the GNU Public License // which can be found at http://www.gnu.org/licenses/gpl.txt // //***************************************************************************** #ifndef WIN32 #include <avr/io.h> #include <avr/interrupt.h> #include <avr/pgmspace.h> // #include <stdio.h> #endif #include "<a class="code" href="global_8h.html">global.h</a>" #include "<a class="code" href="timer_8h.html">timer.h</a>" #include "<a class="code" href="rprintf_8h.html">rprintf.h</a>" #include "<a class="code" href="ata_8h.html">ata.h</a>" //#define DEBUG_ATA 1 // global variables // drive information typeDriveInfo ataDriveInfo; void ataInit(void) void ataDriveInit(void) unsigned char* buffer = (unsigned char*) SECTOR_BUFFER_ADDR; // read drive identity <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("\r\nScanning IDE interface...\r\n"); // Wait for drive to be ready ataStatusWait(ATA_SR_BSY, ATA_SR_BSY); // issue identify command ataWriteByte(ATA_REG_CMDSTATUS1, 0xEC); // wait for drive to request data transfer ataStatusWait(ATA_SR_DRQ, ATA_SR_DRQ); <a class="code" href="group__timer.html#ga10">timerPause</a>(200); // read in the data ataReadDataBuffer(buffer, 512); // set local drive info parameters ataDriveInfo.cylinders = *( ((unsigned int*) buffer) + ATA_IDENT_CYLINDERS ); ataDriveInfo.heads = *( ((unsigned int*) buffer) + ATA_IDENT_HEADS ); ataDriveInfo.sectors = *( ((unsigned int*) buffer) + ATA_IDENT_SECTORS ); ataDriveInfo.LBAsupport = *( ((unsigned int*) buffer) + ATA_IDENT_FIELDVALID ); ataDriveInfo.sizeinsectors = *( (unsigned long*) (buffer + ATA_IDENT_LBASECTORS*2) ); // copy model string for(i=0; i<40; i+=2) // correct for byte order ataDriveInfo.model[i ] = buffer[(ATA_IDENT_MODEL*2) + i + 1]; ataDriveInfo.model[i+1] = buffer[(ATA_IDENT_MODEL*2) + i ]; // terminate string ataDriveInfo.model[40] = 0; // process and print info if(ataDriveInfo.LBAsupport) // LBA support rprintf("Drive 0: %dMB ", ataDriveInfo.sizeinsectors/(1000000/512) ); rprintf("LBA mode -- MODEL: "); else // CHS, no LBA support // calculate drive size ataDriveInfo.sizeinsectors = (unsigned long) ataDriveInfo.cylinders* ataDriveInfo.heads*ataDriveInfo.sectors; rprintf("Drive 0: %dMB ", ataDriveInfo.sizeinsectors/(1000000/512) ); rprintf("CHS mode C=%d H=%d S=%d -- MODEL: ", ataDriveInfo.cylinders, ataDriveInfo.heads, ataDriveInfo.sectors ); // print model information <a class="code" href="group__rprintf.html#ga2">rprintfStr</a>(ataDriveInfo.model); <a class="code" href="group__rprintf.html#ga5">rprintfCRLF</a>(); // initialize local disk parameters //ataDriveInfo.cylinders = ATA_DISKPARM_CLYS; //ataDriveInfo.heads = ATA_DISKPARM_HEADS; //ataDriveInfo.sectors = ATA_DISKPARM_SECTORS; void ataDiskErr(void) unsigned char b; b = ataReadByte(ATA_REG_ERROR); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("ATA Error: "); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(b); <a class="code" href="group__rprintf.html#ga5">rprintfCRLF</a>(); void ataSetDrivePowerMode(u08 DriveNo, u08 mode, u08 timeout) // select drive ataDriveSelect(DriveNo); // Wait for drive to be ready ataStatusWait(ATA_SR_BSY, ATA_SR_BSY); // set mode switch(mode) case ATA_DISKMODE_SPINDOWN: ataWriteByte(ATA_REG_CMDSTATUS1, ATA_CMD_SPINDOWN); break; case ATA_DISKMODE_SPINUP: ataWriteByte(ATA_REG_CMDSTATUS1, ATA_CMD_SPINUP); break; case ATA_DISKMODE_SETTIMEOUT: ataWriteByte(ATA_REG_SECCOUNT, timeout); ataWriteByte(ATA_REG_CMDSTATUS1, ATA_CMD_IDLE_5SU); break; case ATA_DISKMODE_SLEEP: ataWriteByte(ATA_REG_CMDSTATUS1, ATA_CMD_SLEEP); break; default: break; void ataPrintSector( u08 *Buffer) // print the low order address indicies <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 0123456789ABCDEF\r\n"); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" ----------------------------------------------- ---- ASCII -----\r\n"); // print the data for(j=0; j<0x20; j++) // print the high order address index for this line <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(j<<4); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); // print the hex data for(i=0; i<0x10; i++) <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(buf[(j<<4)+i]); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); // leave some space <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); // print the ascii data for(i=0; i<0x10; i++) s = buf[(j<<4)+i]; // make sure character is printable if(s >= 0x20) <a class="code" href="group__rprintf.html#ga1">rprintfChar</a>(s); else <a class="code" href="group__rprintf.html#ga1">rprintfChar</a>(0x20); <a class="code" href="group__rprintf.html#ga5">rprintfCRLF</a>(); void ataReadDataBuffer(u08 *Buffer, u16 numBytes) unsigned int i; //sbi(MCUCR, SRW); // enable RAM waitstate // read data from drive for (i=0; i<(numBytes/16); i++) // optimize by reading 16 bytes in-line before looping *Buffer++ = *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAL); *Buffer++ = *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAH); *Buffer++ = *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAL); *Buffer++ = *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAH); *Buffer++ = *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAL); *Buffer++ = *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAH); *Buffer++ = *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAL); *Buffer++ = *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAH); *Buffer++ = *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAL); *Buffer++ = *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAH); *Buffer++ = *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAL); *Buffer++ = *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAH); *Buffer++ = *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAL); *Buffer++ = *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAH); *Buffer++ = *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAL); *Buffer++ = *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAH); //cbi(MCUCR, SRW); // disable RAM waitstate void ataWriteDataBuffer(u08 *Buffer, u16 numBytes) register unsigned char temp; unsigned int i; //sbi(MCUCR, SRW); // enable RAM waitstate // write data to drive for (i=0; i<(numBytes/16); i++) // optimize by writing 16 bytes in-line before looping // keep byte order correct by using temp register temp = *Buffer++; *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAH) = *Buffer++; *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAL) = temp; temp = *Buffer++; *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAH) = *Buffer++; *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAL) = temp; temp = *Buffer++; *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAH) = *Buffer++; *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAL) = temp; temp = *Buffer++; *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAH) = *Buffer++; *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAL) = temp; temp = *Buffer++; *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAH) = *Buffer++; *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAL) = temp; temp = *Buffer++; *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAH) = *Buffer++; *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAL) = temp; temp = *Buffer++; *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAH) = *Buffer++; *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAL) = temp; temp = *Buffer++; *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAH) = *Buffer++; *((volatile unsigned char*) ATA_REG_BASE + ATA_REG_DATAL) = temp; //cbi(MCUCR, SRW); // disable RAM waitstate u08 ataStatusWait(u08 mask, u08 waitStatus) register u08 status; // wait for desired status while( ((status = ataReadByte(ATA_REG_CMDSTATUS1)) & mask) == waitStatus ); return status; unsigned char ataReadSectorsCHS( unsigned char Drive, unsigned char Head, unsigned int Track, unsigned char Sector, unsigned int numsectors, unsigned char *Buffer) unsigned char temp; // Wait for drive to be ready temp = ataStatusWait(ATA_SR_BSY, ATA_SR_BSY); // Prepare parameters... ataWriteByte(ATA_REG_HDDEVSEL, 0xA0+(Drive ? 0x10:00)+Head); // CHS mode/Drive/Head ataWriteByte(ATA_REG_CYLHI, Track>>8); // MSB of track ataWriteByte(ATA_REG_CYLLO, Track); // LSB of track ataWriteByte(ATA_REG_STARTSEC, Sector); // sector ataWriteByte(ATA_REG_SECCOUNT, numsectors); // # of sectors // Issue read sector command... ataWriteByte(ATA_REG_CMDSTATUS1, 0x21); // Wait for drive to be ready temp = ataStatusWait(ATA_SR_BSY, ATA_SR_BSY); if (temp & ATA_SR_ERR) <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("RD ERR\r\n"); return 1; // Wait for drive to request data transfer ataStatusWait(ATA_SR_DRQ, 0); // read data from drive ataReadDataBuffer(Buffer, 512*numsectors); // Return the error bit from the status register... temp = ataReadByte(ATA_REG_CMDSTATUS1); // read status register return (temp & ATA_SR_ERR) ? 1:0; unsigned char ataWriteSectorsCHS(unsigned char Drive, unsigned char Head, unsigned int Track, unsigned char Sector, unsigned int numsectors, unsigned char *Buffer) unsigned char temp; // Wait for drive to be ready temp = ataStatusWait(ATA_SR_BSY, ATA_SR_BSY); // Prepare parameters... ataWriteByte(ATA_REG_HDDEVSEL, 0xA0+(Drive ? 0x10:00)+Head); // CHS mode/Drive/Head ataWriteByte(ATA_REG_CYLHI, Track>>8); // MSB of track ataWriteByte(ATA_REG_CYLLO, Track); // LSB of track ataWriteByte(ATA_REG_STARTSEC, Sector); // sector ataWriteByte(ATA_REG_SECCOUNT, numsectors); // # of sectors // Issue write sector command ataWriteByte(ATA_REG_CMDSTATUS1, 0x31); //delay(100); // Wait for drive to request data transfer ataStatusWait(ATA_SR_DRQ, 0); // write data to drive ataWriteDataBuffer(Buffer, 512*numsectors); // Wait for drive to finish write temp = ataStatusWait(ATA_SR_BSY, ATA_SR_BSY); // check for errors if (temp & ATA_SR_ERR) <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("WR ERR\r\n"); return 1; // Return the error bit from the status register... return (temp & ATA_SR_ERR) ? 1:0; unsigned char ataReadSectorsLBA( unsigned char Drive, unsigned long lba, unsigned int numsectors, unsigned char *Buffer) unsigned int cyl, head, sect; unsigned char temp; #ifdef DEBUG_ATA <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("ATA LBA read "); <a class="code" href="group__rprintf.html#ga9">rprintfu32</a>(lba); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(numsectors); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>((unsigned int)Buffer); <a class="code" href="group__rprintf.html#ga5">rprintfCRLF</a>(); #endif sect = (int) ( lba & 0x000000ffL ); lba = lba >> 8; cyl = (int) ( lba & 0x0000ffff ); lba = lba >> 16; head = ( (int) ( lba & 0x0fL ) ) | ATA_HEAD_USE_LBA; temp = ataReadSectorsCHS( Drive, head, cyl, sect, numsectors, Buffer ); if(temp) ataDiskErr(); return temp; unsigned char ataWriteSectorsLBA( unsigned char Drive, unsigned long lba, unsigned int numsectors, unsigned char *Buffer) unsigned int cyl, head, sect; unsigned char temp; #ifdef DEBUG_ATA <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("ATA LBA write "); <a class="code" href="group__rprintf.html#ga9">rprintfu32</a>(lba); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(numsectors); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>((unsigned int)Buffer); <a class="code" href="group__rprintf.html#ga5">rprintfCRLF</a>(); #endif sect = (int) ( lba & 0x000000ffL ); lba = lba >> 8; cyl = (int) ( lba & 0x0000ffff ); lba = lba >> 16; head = ( (int) ( lba & 0x0fL ) ) | ATA_HEAD_USE_LBA; temp = ataWriteSectorsCHS( Drive, head, cyl, sect, numsectors, Buffer ); if(temp) ataDiskErr(); return temp; unsigned char ataReadSectors( unsigned char Drive, unsigned long lba, unsigned int numsectors, unsigned char *Buffer) unsigned int cyl, head, sect; unsigned char temp; // check if drive supports native LBA mode if(ataDriveInfo.LBAsupport) // drive supports using native LBA temp = ataReadSectorsLBA(Drive, lba, numsectors, Buffer); else // drive required CHS access #ifdef DEBUG_ATA // do this defore destroying lba <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("ATA LBA for CHS read: "); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("LBA="); <a class="code" href="group__rprintf.html#ga9">rprintfu32</a>(lba); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); #endif // convert LBA to pseudo CHS // remember to offset the sector count by one sect = (u08) (lba % ataDriveInfo.sectors)+1; lba = lba / ataDriveInfo.sectors; head = (u08) (lba % ataDriveInfo.heads); lba = lba / ataDriveInfo.heads; cyl = (u16) lba; #ifdef DEBUG_ATA <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("C:H:S="); <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cyl); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(":"); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(head); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(":"); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(sect); <a class="code" href="group__rprintf.html#ga5">rprintfCRLF</a>(); #endif temp = ataReadSectorsCHS( Drive, head, cyl, sect, numsectors, Buffer ); if(temp) ataDiskErr(); return temp; unsigned char ataWriteSectors(unsigned char Drive, unsigned long lba, unsigned int numsectors, unsigned char *Buffer) unsigned int cyl, head, sect; unsigned char temp; // check if drive supports native LBA mode if(ataDriveInfo.LBAsupport) // drive supports using native LBA temp = ataWriteSectorsLBA(Drive, lba, numsectors, Buffer); else // drive required CHS access #ifdef DEBUG_ATA // do this defore destroying lba <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("ATA LBA for CHS write: "); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("LBA="); <a class="code" href="group__rprintf.html#ga9">rprintfu32</a>(lba); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); #endif // convert LBA to pseudo CHS // remember to offset the sector count by one sect = (u08) (lba % ataDriveInfo.sectors)+1; lba = lba / ataDriveInfo.sectors; head = (u08) (lba % ataDriveInfo.heads); lba = lba / ataDriveInfo.heads; cyl = (u16) lba; #ifdef DEBUG_ATA <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("C:H:S="); <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cyl); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(":"); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(head); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(":"); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(sect); <a class="code" href="group__rprintf.html#ga5">rprintfCRLF</a>(); #endif temp = ataWriteSectorsCHS( Drive, head, cyl, sect, numsectors, Buffer ); if(temp) ataDiskErr(); return temp; void ataDriveSelect(u08 DriveNo) ataWriteByte(ATA_REG_HDDEVSEL, 0xA0+(DriveNo ? 0x10:00)); // Drive selection //---------------------------------------------------------------------------- // Set drive mode (STANDBY, IDLE) //---------------------------------------------------------------------------- /*#define STANDBY 0 #define IDLE 1 #define SLEEP 2 */ /* unsigned char SetMode(unsigned char DriveNo, unsigned char Mode, unsigned char PwrDown) { WriteBYTE(CMD, 6, 0xA0 + (DriveNo ? 0x10:0x00)); // Select drive WriteBYTE(CMD, 2, (PwrDown ? 0x01:0x00)); // Enable automatic power down switch (Mode) { case STANDBY: WriteBYTE(CMD,7, 0xE2); break; case IDLE: WriteBYTE(CMD,7, 0xE3); break; // NOTE: To recover from sleep, either issue a soft or hardware reset ! // (But not on all drives, f.ex seagate ST3655A it's not nessecary to reset // but only to go in Idle mode, But on a Conner CFA170A it's nessecary with // a reset) case SLEEP: WriteBYTE(CMD,7, 0xE6); break; } Timer10mSec=10000; while ((ReadBYTE(CMD,7) & 0xC0)!=0x40 && Timer10mSec); // Wait for DRDY & NOT BUSY if (Timer10mSec==0) return 0xFF; // or timeout // Return the error register... return ReadBYTE(CMD, 1); } */ u08 ataReadByte(u08 reg) register u08 ret; //sbi(MCUCR, SRW); // enable RAM waitstate ret = *((volatile unsigned char*) ATA_REG_BASE + reg); //cbi(MCUCR, SRW); // disable RAM waitstate return ret; void ataWriteByte(u08 reg, u08 data) //sbi(MCUCR, SRW); // enable RAM waitstate *((volatile unsigned char*) ATA_REG_BASE + reg) = data; //cbi(MCUCR, SRW); // disable RAM waitstate void ataShowRegisters(unsigned char DriveNo) ataWriteByte(ATA_REG_HDDEVSEL, 0xA0 + (DriveNo ? 0x10:0x00)); // Select drive <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("R0: DATALOW = 0x"); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(ataReadByte(ATA_REG_DATAL )); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" \r\n"); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("R1: ERROR = 0x"); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(ataReadByte(ATA_REG_ERROR )); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" \r\n"); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("R2: SECT CNT = 0x"); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(ataReadByte(ATA_REG_SECCOUNT)); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" \r\n"); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("R3: SECT NUM = 0x"); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(ataReadByte(ATA_REG_STARTSEC)); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" \r\n"); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("R4: CYL LOW = 0x"); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(ataReadByte(ATA_REG_CYLLO )); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" \r\n"); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("R5: CYL HIGH = 0x"); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(ataReadByte(ATA_REG_CYLHI )); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" \r\n"); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("R6: HEAD/DEV = 0x"); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(ataReadByte(ATA_REG_HDDEVSEL)); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" \r\n"); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("R7: CMD/STA = 0x"); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(ataReadByte(ATA_REG_CMDSTATUS1)); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("\r\n"); unsigned char ataSWReset(void) ataWriteByte(ATA_REG_HDDEVSEL, 0x06); // SRST and nIEN bits delay(10); // 10uS delay ataWriteByte(ATA_REG_HDDEVSEL, 0x02); // nIEN bits delay(10); // 10 uS delay while( (ataReadByte(ATA_REG_CMDSTATUS1) & 0xC0) != 0x40 ); // Wait for DRDY and not BSY return ataReadByte(ATA_REG_CMDSTATUS1) + ataReadByte(ATA_REG_ERROR); /* unsigned char ATA_Idle(unsigned char Drive) { WriteBYTE(CMD, 6, 0xA0 + (Drive ? 0x10:0x00)); // Select drive WriteBYTE(CMD,7, 0xE1); while ((ReadBYTE(CMD,7) & 0xC0)!=0x40); // Wait for DRDY & NOT BUSY // Return the error register... return ReadBYTE(CMD, 1); } */ pre></div><hr size="1"><address style="align: right;">Generated on Sun Oct 29 03:41:06 2006 for Procyon AVRlib by  href="http://www.doxygen.org/index.html"> src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.2 </address>

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