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00408 cyl = (<span class="keywordtype">int</span>) ( lba & 0x0000ffff );00409 lba = lba >> 16;00410 head = ( (<span class="keywordtype">int</span>) ( lba & 0x0fL ) ) | ATA_HEAD_USE_LBA;00411 00412 temp = ataWriteSectorsCHS( Drive, head, cyl, sect, numsectors, Buffer );00413 00414 <span class="keywordflow">if</span>(temp)00415 ataDiskErr();00416 <span class="keywordflow">return</span> temp;00417 } 00418 00419 00420 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> ataReadSectors( <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> Drive, 00421 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> lba,00422 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numsectors,00423 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *Buffer)00424 {00425 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> cyl, head, sect;00426 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> temp;00427 00428 <span class="comment">// check if drive supports native LBA mode</span>00429 <span class="keywordflow">if</span>(ataDriveInfo.LBAsupport)00430 {00431 <span class="comment">// drive supports using native LBA</span>00432 temp = ataReadSectorsLBA(Drive, lba, numsectors, Buffer);00433 }00434 <span class="keywordflow">else</span>00435 {00436 <span class="comment">// drive required CHS access</span>00437 <span class="preprocessor"> #ifdef DEBUG_ATA</span>00438 <span class="preprocessor"></span> <span class="comment">// do this defore destroying lba</span>00439 rprintfProgStrM(<span class="stringliteral">"ATA LBA for CHS read: "</span>);00440 rprintfProgStrM(<span class="stringliteral">"LBA="</span>); <a class="code" href="rprintf_8h.html#a15">rprintfu32</a>(lba); rprintfProgStrM(<span class="stringliteral">" "</span>);00441 <span class="preprocessor"> #endif</span>00442 <span class="preprocessor"></span>00443 <span class="comment">// convert LBA to pseudo CHS</span>00444 <span class="comment">// remember to offset the sector count by one</span>00445 sect = (u08) (lba % ataDriveInfo.sectors)+1;00446 lba = lba / ataDriveInfo.sectors;00447 head = (u08) (lba % ataDriveInfo.heads);00448 lba = lba / ataDriveInfo.heads;00449 cyl = (u16) lba;00450 00451 <span class="preprocessor"> #ifdef DEBUG_ATA</span>00452 <span class="preprocessor"></span> rprintfProgStrM(<span class="stringliteral">"C:H:S="</span>);00453 <a class="code" href="rprintf_8h.html#a14">rprintfu16</a>(cyl); rprintfProgStrM(<span class="stringliteral">":"</span>);00454 <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(head); rprintfProgStrM(<span class="stringliteral">":"</span>);00455 <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(sect); <a class="code" href="rprintf_8c.html#a9">rprintfCRLF</a>();00456 <span class="preprocessor"> #endif</span>00457 <span class="preprocessor"></span>00458 temp = ataReadSectorsCHS( Drive, head, cyl, sect, numsectors, Buffer );00459 }00460 00461 <span class="keywordflow">if</span>(temp)00462 ataDiskErr();00463 <span class="keywordflow">return</span> temp;00464 }00465 00466 00467 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> ataWriteSectors(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> Drive, 00468 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> lba,00469 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numsectors,00470 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *Buffer)00471 {00472 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> cyl, head, sect;00473 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> temp;00474 00475 <span class="comment">// check if drive supports native LBA mode</span>00476 <span class="keywordflow">if</span>(ataDriveInfo.LBAsupport)00477 {00478 <span class="comment">// drive supports using native LBA</span>00479 temp = ataWriteSectorsLBA(Drive, lba, numsectors, Buffer);00480 }00481 <span class="keywordflow">else</span>00482 {00483 <span class="comment">// drive required CHS access</span>00484 <span class="preprocessor"> #ifdef DEBUG_ATA</span>00485 <span class="preprocessor"></span> <span class="comment">// do this defore destroying lba</span>00486 rprintfProgStrM(<span class="stringliteral">"ATA LBA for CHS write: "</span>);00487 rprintfProgStrM(<span class="stringliteral">"LBA="</span>); <a class="code" href="rprintf_8h.html#a15">rprintfu32</a>(lba); rprintfProgStrM(<span class="stringliteral">" "</span>);00488 <span class="preprocessor"> #endif</span>00489 <span class="preprocessor"></span>00490 <span class="comment">// convert LBA to pseudo CHS</span>00491 <span class="comment">// remember to offset the sector count by one</span>00492 sect = (u08) (lba % ataDriveInfo.sectors)+1;00493 lba = lba / ataDriveInfo.sectors;00494 head = (u08) (lba % ataDriveInfo.heads);00495 lba = lba / ataDriveInfo.heads;00496 cyl = (u16) lba;00497 00498 <span class="preprocessor"> #ifdef DEBUG_ATA</span>00499 <span class="preprocessor"></span> rprintfProgStrM(<span class="stringliteral">"C:H:S="</span>);00500 <a class="code" href="rprintf_8h.html#a14">rprintfu16</a>(cyl); rprintfProgStrM(<span class="stringliteral">":"</span>);00501 <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(head); rprintfProgStrM(<span class="stringliteral">":"</span>);00502 <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(sect); <a class="code" href="rprintf_8c.html#a9">rprintfCRLF</a>();00503 <span class="preprocessor"> #endif</span>00504 <span class="preprocessor"></span>00505 temp = ataWriteSectorsCHS( Drive, head, cyl, sect, numsectors, Buffer );00506 }00507 00508 <span class="keywordflow">if</span>(temp)00509 ataDiskErr();00510 <span class="keywordflow">return</span> temp;00511 } 00512 00513 <span class="keywordtype">void</span> ataDriveSelect(u08 DriveNo)00514 {00515 ataWriteByte(ATA_REG_HDDEVSEL, 0xA0+(DriveNo ? 0x10:00)); <span class="comment">// Drive selection</span>00516 }00517 00518 <span class="comment">//----------------------------------------------------------------------------</span>00519 <span class="comment">// Set drive mode (STANDBY, IDLE)</span>00520 <span class="comment">//----------------------------------------------------------------------------</span>00521 <span class="comment">/*#define STANDBY 0</span>00522 <span class="comment">#define IDLE 1</span>00523 <span class="comment">#define SLEEP 2 </span>00524 <span class="comment">*/</span> 00525 00526 <span class="comment">/*</span>00527 <span class="comment">unsigned char SetMode(unsigned char DriveNo, unsigned char Mode, unsigned char PwrDown) </span>00528 <span class="comment">{</span>00529 <span class="comment"> WriteBYTE(CMD, 6, 0xA0 + (DriveNo ? 0x10:0x00)); // Select drive</span>00530 <span class="comment"> WriteBYTE(CMD, 2, (PwrDown ? 0x01:0x00)); // Enable automatic power down</span>00531 <span class="comment"> switch (Mode) </span>00532 <span class="comment"> {</span>00533 <span class="comment"> case STANDBY: WriteBYTE(CMD,7, 0xE2); break;</span>00534 <span class="comment"> case IDLE: WriteBYTE(CMD,7, 0xE3); break;</span>00535 <span class="comment"> // NOTE: To recover from sleep, either issue a soft or hardware reset !</span>00536 <span class="comment"> // (But not on all drives, f.ex seagate ST3655A it's not nessecary to reset</span>00537 <span class="comment"> // but only to go in Idle mode, But on a Conner CFA170A it's nessecary with</span>00538 <span class="comment"> // a reset)</span>00539 <span class="comment"> case SLEEP: WriteBYTE(CMD,7, 0xE6); break;</span>00540 <span class="comment"> }</span>00541 <span class="comment"> Timer10mSec=10000;</span>00542 <span class="comment"> while ((ReadBYTE(CMD,7) & 0xC0)!=0x40 && Timer10mSec); // Wait for DRDY & NOT BUSY </span>00543 <span class="comment"> if (Timer10mSec==0) return 0xFF; // or timeout</span>00544 <span class="comment"> </span>00545 <span class="comment"> // Return the error register...</span>00546 <span class="comment"> return ReadBYTE(CMD, 1);</span>00547 <span class="comment">}</span>00548 <span class="comment"></span>00549 <span class="comment">*/</span>00550 00551 u08 ataReadByte(u08 reg)00552 {00553 <span class="keyword">register</span> u08 ret;00554 <span class="comment">//sbi(MCUCR, SRW); // enable RAM waitstate</span>00555 ret = *((<span class="keyword">volatile</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*) ATA_REG_BASE + reg);00556 <span class="comment">//cbi(MCUCR, SRW); // disable RAM waitstate</span>00557 <span class="keywordflow">return</span> ret;00558 }00559 00560 <span class="keywordtype">void</span> ataWriteByte(u08 reg, u08 data)00561 {00562 <span class="comment">//sbi(MCUCR, SRW); // enable RAM waitstate</span>00563 *((<span class="keyword">volatile</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*) ATA_REG_BASE + reg) = data;00564 <span class="comment">//cbi(MCUCR, SRW); // disable RAM waitstate</span>00565 }00566 00567 00568 <span class="keywordtype">void</span> ataShowRegisters(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> DriveNo) 00569 { 00570 ataWriteByte(ATA_REG_HDDEVSEL, 0xA0 + (DriveNo ? 0x10:0x00)); <span class="comment">// Select drive</span>00571 00572 rprintfProgStrM(<span class="stringliteral">"R0: DATALOW = 0x"</span>); <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(ataReadByte(ATA_REG_DATAL )); rprintfProgStrM(<span class="stringliteral">" \r\n"</span>);00573 rprintfProgStrM(<span class="stringliteral">"R1: ERROR = 0x"</span>); <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(ataReadByte(ATA_REG_ERROR )); rprintfProgStrM(<span class="stringliteral">" \r\n"</span>);00574 rprintfProgStrM(<span class="stringliteral">"R2: SECT CNT = 0x"</span>); <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(ataReadByte(ATA_REG_SECCOUNT)); rprintfProgStrM(<span class="stringliteral">" \r\n"</span>);00575 rprintfProgStrM(<span class="stringliteral">"R3: SECT NUM = 0x"</span>); <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(ataReadByte(ATA_REG_STARTSEC)); rprintfProgStrM(<span class="stringliteral">" \r\n"</span>);00576 rprintfProgStrM(<span class="stringliteral">"R4: CYL LOW = 0x"</span>); <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(ataReadByte(ATA_REG_CYLLO )); rprintfProgStrM(<span class="stringliteral">" \r\n"</span>);00577 rprintfProgStrM(<span class="stringliteral">"R5: CYL HIGH = 0x"</span>); <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(ataReadByte(ATA_REG_CYLHI )); rprintfProgStrM(<span class="stringliteral">" \r\n"</span>);00578 rprintfProgStrM(<span class="stringliteral">"R6: HEAD/DEV = 0x"</span>); <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(ataReadByte(ATA_REG_HDDEVSEL)); rprintfProgStrM(<span class="stringliteral">" \r\n"</span>);00579 rprintfProgStrM(<span class="stringliteral">"R7: CMD/STA = 0x"</span>); <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(ataReadByte(ATA_REG_CMDSTATUS1)); rprintfProgStrM(<span class="stringliteral">"\r\n"</span>);00580 } 00581 00582 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> ataSWReset(<span class="keywordtype">void</span>)00583 {00584 ataWriteByte(ATA_REG_HDDEVSEL, 0x06); <span class="comment">// SRST and nIEN bits</span>00585 delay(10); <span class="comment">// 10uS delay</span>00586 ataWriteByte(ATA_REG_HDDEVSEL, 0x02); <span class="comment">// nIEN bits</span>00587 delay(10); <span class="comment">// 10 uS delay</span>00588 00589 <span class="keywordflow">while</span>( (ataReadByte(ATA_REG_CMDSTATUS1) & 0xC0) != 0x40 ); <span class="comment">// Wait for DRDY and not BSY</span>00590 00591 <span class="keywordflow">return</span> ataReadByte(ATA_REG_CMDSTATUS1) + ataReadByte(ATA_REG_ERROR);00592 }00593 00594 <span class="comment">/*</span>00595 <span class="comment">unsigned char ATA_Idle(unsigned char Drive)</span>00596 <span class="comment">{</span>00597 <span class="comment"></span>00598 <span class="comment"> WriteBYTE(CMD, 6, 0xA0 + (Drive ? 0x10:0x00)); // Select drive</span>00599 <span class="comment"> WriteBYTE(CMD,7, 0xE1);</span>00600 <span class="comment"></span>00601 <span class="comment"> while ((ReadBYTE(CMD,7) & 0xC0)!=0x40); // Wait for DRDY & NOT BUSY </span>00602 <span class="comment"></span>00603 <span class="comment"> // Return the error register...</span>00604 <span class="comment"> return ReadBYTE(CMD, 1);</span>00605 <span class="comment">}</span>00606 <span class="comment">*/</span></pre></div><hr size="1"><address style="align: right;"><small>Generated on Fri Oct 15 03:50:21 2004 for Procyon AVRlib by<a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border=0 > </a>1.3.6 </small></address></body></html>⌨️ 快捷键说明
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