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  87. <div class="title">FatVolume Class Reference</div> </div>
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  90. <p>Access FAT16 and FAT32 volumes on raw file devices.
  91. <a href="class_fat_volume.html#details">More...</a></p>
  92. <p><code>#include &lt;FatVolume.h&gt;</code></p>
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  94. Inheritance diagram for FatVolume:</div>
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  112. Public Member Functions</h2></td></tr>
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  135. <tr class="memitem:a1683b063fc6202ab85470b9610f16f93"><td class="memItemLeft" align="right" valign="top">int32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_volume.html#a1683b063fc6202ab85470b9610f16f93">freeClusterCount</a> ()</td></tr>
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  137. <tr class="memitem:acab819fa25a91dad1cc698a7e1e0eb32"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_volume.html#acab819fa25a91dad1cc698a7e1e0eb32">init</a> ()</td></tr>
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  141. <tr class="memitem:ab2d483670a0a6a6a4754b23614fe11bc"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_volume.html#ab2d483670a0a6a6a4754b23614fe11bc">rootDirEntryCount</a> () const </td></tr>
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  143. <tr class="memitem:ae9363ebbbae90e895ea56e8fa3f60c13"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_volume.html#ae9363ebbbae90e895ea56e8fa3f60c13">rootDirStart</a> () const </td></tr>
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  145. <tr class="memitem:a07bc98088ce4a9c725700899c184f7fc"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_volume.html#a07bc98088ce4a9c725700899c184f7fc">volumeBlockCount</a> () const </td></tr>
  146. <tr class="separator:a07bc98088ce4a9c725700899c184f7fc"><td class="memSeparator" colspan="2">&#160;</td></tr>
  147. <tr class="memitem:a8088aa74cf601996905dadd2eea6966c"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_volume.html#a8088aa74cf601996905dadd2eea6966c">wipe</a> (<a class="el" href="_fat_volume_8h.html#ac62f6449331cfe1a71f29be30efe7890">print_t</a> *pr=0)</td></tr>
  148. <tr class="separator:a8088aa74cf601996905dadd2eea6966c"><td class="memSeparator" colspan="2">&#160;</td></tr>
  149. </table><table class="memberdecls">
  150. <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="friends"></a>
  151. Friends</h2></td></tr>
  152. <tr class="memitem:a1e97a7aed860b898c403cb29455b3fe7"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a1e97a7aed860b898c403cb29455b3fe7"></a>
  153. class&#160;</td><td class="memItemRight" valign="bottom"><b>FatCache</b></td></tr>
  154. <tr class="separator:a1e97a7aed860b898c403cb29455b3fe7"><td class="memSeparator" colspan="2">&#160;</td></tr>
  155. <tr class="memitem:a18fb15a715ea85037ab802286853103e"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a18fb15a715ea85037ab802286853103e"></a>
  156. class&#160;</td><td class="memItemRight" valign="bottom"><b>FatFile</b></td></tr>
  157. <tr class="separator:a18fb15a715ea85037ab802286853103e"><td class="memSeparator" colspan="2">&#160;</td></tr>
  158. <tr class="memitem:ac095954ff68b78a07c0cf5fabbb2db6f"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ac095954ff68b78a07c0cf5fabbb2db6f"></a>
  159. class&#160;</td><td class="memItemRight" valign="bottom"><b>FatFileSystem</b></td></tr>
  160. <tr class="separator:ac095954ff68b78a07c0cf5fabbb2db6f"><td class="memSeparator" colspan="2">&#160;</td></tr>
  161. </table>
  162. <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
  163. <div class="textblock"><p>Access FAT16 and FAT32 volumes on raw file devices. </p>
  164. </div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
  165. <a class="anchor" id="a026de2bb58026e4edea130db2949b84c"></a>
  166. <div class="memitem">
  167. <div class="memproto">
  168. <table class="mlabels">
  169. <tr>
  170. <td class="mlabels-left">
  171. <table class="memname">
  172. <tr>
  173. <td class="memname">FatVolume::FatVolume </td>
  174. <td>(</td>
  175. <td class="paramname"></td><td>)</td>
  176. <td></td>
  177. </tr>
  178. </table>
  179. </td>
  180. <td class="mlabels-right">
  181. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  182. </tr>
  183. </table>
  184. </div><div class="memdoc">
  185. <p>Create an instance of <a class="el" href="class_fat_volume.html" title="Access FAT16 and FAT32 volumes on raw file devices. ">FatVolume</a> </p>
  186. </div>
  187. </div>
  188. <h2 class="groupheader">Member Function Documentation</h2>
  189. <a class="anchor" id="a06beed4cea5e38116b58254a57125442"></a>
  190. <div class="memitem">
  191. <div class="memproto">
  192. <table class="mlabels">
  193. <tr>
  194. <td class="mlabels-left">
  195. <table class="memname">
  196. <tr>
  197. <td class="memname">uint8_t FatVolume::blocksPerCluster </td>
  198. <td>(</td>
  199. <td class="paramname"></td><td>)</td>
  200. <td> const</td>
  201. </tr>
  202. </table>
  203. </td>
  204. <td class="mlabels-right">
  205. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  206. </tr>
  207. </table>
  208. </div><div class="memdoc">
  209. <dl class="section return"><dt>Returns</dt><dd>The volume's cluster size in blocks. </dd></dl>
  210. </div>
  211. </div>
  212. <a class="anchor" id="abc66d856d05198d9ebe7104c8c4155d7"></a>
  213. <div class="memitem">
  214. <div class="memproto">
  215. <table class="mlabels">
  216. <tr>
  217. <td class="mlabels-left">
  218. <table class="memname">
  219. <tr>
  220. <td class="memname">uint32_t FatVolume::blocksPerFat </td>
  221. <td>(</td>
  222. <td class="paramname"></td><td>)</td>
  223. <td> const</td>
  224. </tr>
  225. </table>
  226. </td>
  227. <td class="mlabels-right">
  228. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  229. </tr>
  230. </table>
  231. </div><div class="memdoc">
  232. <dl class="section return"><dt>Returns</dt><dd>The number of blocks in one FAT. </dd></dl>
  233. </div>
  234. </div>
  235. <a class="anchor" id="aa1e3b1d0c21d202deb82668068ab00e8"></a>
  236. <div class="memitem">
  237. <div class="memproto">
  238. <table class="mlabels">
  239. <tr>
  240. <td class="mlabels-left">
  241. <table class="memname">
  242. <tr>
  243. <td class="memname"><a class="el" href="unioncache__t.html">cache_t</a>* FatVolume::cacheClear </td>
  244. <td>(</td>
  245. <td class="paramname"></td><td>)</td>
  246. <td></td>
  247. </tr>
  248. </table>
  249. </td>
  250. <td class="mlabels-right">
  251. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  252. </tr>
  253. </table>
  254. </div><div class="memdoc">
  255. <p>Clear the cache and returns a pointer to the cache. Not for normal apps. </p><dl class="section return"><dt>Returns</dt><dd>A pointer to the cache buffer or zero if an error occurs. </dd></dl>
  256. </div>
  257. </div>
  258. <a class="anchor" id="a18446a9c5924304fa7a87d5f03ccaf21"></a>
  259. <div class="memitem">
  260. <div class="memproto">
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  262. <tr>
  263. <td class="mlabels-left">
  264. <table class="memname">
  265. <tr>
  266. <td class="memname">uint32_t FatVolume::clusterCount </td>
  267. <td>(</td>
  268. <td class="paramname"></td><td>)</td>
  269. <td> const</td>
  270. </tr>
  271. </table>
  272. </td>
  273. <td class="mlabels-right">
  274. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  275. </tr>
  276. </table>
  277. </div><div class="memdoc">
  278. <dl class="section return"><dt>Returns</dt><dd>The total number of clusters in the volume. </dd></dl>
  279. </div>
  280. </div>
  281. <a class="anchor" id="ac0e63f33d71d5dc95a602834274def6a"></a>
  282. <div class="memitem">
  283. <div class="memproto">
  284. <table class="mlabels">
  285. <tr>
  286. <td class="mlabels-left">
  287. <table class="memname">
  288. <tr>
  289. <td class="memname">uint8_t FatVolume::clusterSizeShift </td>
  290. <td>(</td>
  291. <td class="paramname"></td><td>)</td>
  292. <td> const</td>
  293. </tr>
  294. </table>
  295. </td>
  296. <td class="mlabels-right">
  297. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  298. </tr>
  299. </table>
  300. </div><div class="memdoc">
  301. <dl class="section return"><dt>Returns</dt><dd>The shift count required to multiply by blocksPerCluster. </dd></dl>
  302. </div>
  303. </div>
  304. <a class="anchor" id="a443364af257c219f8e908d5b073d8fa3"></a>
  305. <div class="memitem">
  306. <div class="memproto">
  307. <table class="mlabels">
  308. <tr>
  309. <td class="mlabels-left">
  310. <table class="memname">
  311. <tr>
  312. <td class="memname">uint32_t FatVolume::dataStartBlock </td>
  313. <td>(</td>
  314. <td class="paramname"></td><td>)</td>
  315. <td> const</td>
  316. </tr>
  317. </table>
  318. </td>
  319. <td class="mlabels-right">
  320. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  321. </tr>
  322. </table>
  323. </div><div class="memdoc">
  324. <dl class="section return"><dt>Returns</dt><dd>The logical block number for the start of file data. </dd></dl>
  325. </div>
  326. </div>
  327. <a class="anchor" id="a25c6311b70fa274b3be94ff25fdebba7"></a>
  328. <div class="memitem">
  329. <div class="memproto">
  330. <table class="mlabels">
  331. <tr>
  332. <td class="mlabels-left">
  333. <table class="memname">
  334. <tr>
  335. <td class="memname">int8_t FatVolume::dbgFat </td>
  336. <td>(</td>
  337. <td class="paramtype">uint32_t&#160;</td>
  338. <td class="paramname"><em>n</em>, </td>
  339. </tr>
  340. <tr>
  341. <td class="paramkey"></td>
  342. <td></td>
  343. <td class="paramtype">uint32_t *&#160;</td>
  344. <td class="paramname"><em>v</em>&#160;</td>
  345. </tr>
  346. <tr>
  347. <td></td>
  348. <td>)</td>
  349. <td></td><td></td>
  350. </tr>
  351. </table>
  352. </td>
  353. <td class="mlabels-right">
  354. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  355. </tr>
  356. </table>
  357. </div><div class="memdoc">
  358. <p>Debug access to FAT table</p>
  359. <dl class="params"><dt>Parameters</dt><dd>
  360. <table class="params">
  361. <tr><td class="paramdir">[in]</td><td class="paramname">n</td><td>cluster number. </td></tr>
  362. <tr><td class="paramdir">[out]</td><td class="paramname">v</td><td>value of entry </td></tr>
  363. </table>
  364. </dd>
  365. </dl>
  366. <dl class="section return"><dt>Returns</dt><dd>true for success or false for failure </dd></dl>
  367. </div>
  368. </div>
  369. <a class="anchor" id="acdedc6a200b01e401c9cd9b511eae6ec"></a>
  370. <div class="memitem">
  371. <div class="memproto">
  372. <table class="mlabels">
  373. <tr>
  374. <td class="mlabels-left">
  375. <table class="memname">
  376. <tr>
  377. <td class="memname">uint8_t FatVolume::fatCount </td>
  378. <td>(</td>
  379. <td class="paramname"></td><td>)</td>
  380. <td></td>
  381. </tr>
  382. </table>
  383. </td>
  384. <td class="mlabels-right">
  385. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  386. </tr>
  387. </table>
  388. </div><div class="memdoc">
  389. <dl class="section return"><dt>Returns</dt><dd>The number of <a class="el" href="class_file.html" title="Arduino SD.h style File API. ">File</a> Allocation Tables. </dd></dl>
  390. </div>
  391. </div>
  392. <a class="anchor" id="a0dd0cc689b63ef0702aed1cf36b1722d"></a>
  393. <div class="memitem">
  394. <div class="memproto">
  395. <table class="mlabels">
  396. <tr>
  397. <td class="mlabels-left">
  398. <table class="memname">
  399. <tr>
  400. <td class="memname">uint32_t FatVolume::fatStartBlock </td>
  401. <td>(</td>
  402. <td class="paramname"></td><td>)</td>
  403. <td> const</td>
  404. </tr>
  405. </table>
  406. </td>
  407. <td class="mlabels-right">
  408. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  409. </tr>
  410. </table>
  411. </div><div class="memdoc">
  412. <dl class="section return"><dt>Returns</dt><dd>The logical block number for the start of the first FAT. </dd></dl>
  413. </div>
  414. </div>
  415. <a class="anchor" id="a1364f11fe9bb4717ce0685e2b7b86027"></a>
  416. <div class="memitem">
  417. <div class="memproto">
  418. <table class="mlabels">
  419. <tr>
  420. <td class="mlabels-left">
  421. <table class="memname">
  422. <tr>
  423. <td class="memname">uint8_t FatVolume::fatType </td>
  424. <td>(</td>
  425. <td class="paramname"></td><td>)</td>
  426. <td> const</td>
  427. </tr>
  428. </table>
  429. </td>
  430. <td class="mlabels-right">
  431. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  432. </tr>
  433. </table>
  434. </div><div class="memdoc">
  435. <dl class="section return"><dt>Returns</dt><dd>The FAT type of the volume. Values are 12, 16 or 32. </dd></dl>
  436. </div>
  437. </div>
  438. <a class="anchor" id="a1683b063fc6202ab85470b9610f16f93"></a>
  439. <div class="memitem">
  440. <div class="memproto">
  441. <table class="memname">
  442. <tr>
  443. <td class="memname">int32_t FatVolume::freeClusterCount </td>
  444. <td>(</td>
  445. <td class="paramname"></td><td>)</td>
  446. <td></td>
  447. </tr>
  448. </table>
  449. </div><div class="memdoc">
  450. <p>Volume free space in clusters.</p>
  451. <dl class="section return"><dt>Returns</dt><dd>Count of free clusters for success or -1 if an error occurs. </dd></dl>
  452. </div>
  453. </div>
  454. <a class="anchor" id="acab819fa25a91dad1cc698a7e1e0eb32"></a>
  455. <div class="memitem">
  456. <div class="memproto">
  457. <table class="mlabels">
  458. <tr>
  459. <td class="mlabels-left">
  460. <table class="memname">
  461. <tr>
  462. <td class="memname">bool FatVolume::init </td>
  463. <td>(</td>
  464. <td class="paramname"></td><td>)</td>
  465. <td></td>
  466. </tr>
  467. </table>
  468. </td>
  469. <td class="mlabels-right">
  470. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  471. </tr>
  472. </table>
  473. </div><div class="memdoc">
  474. <p>Initialize a FAT volume. Try partition one first then try super floppy format.</p>
  475. <dl class="section return"><dt>Returns</dt><dd>The value true is returned for success and the value false is returned for failure. </dd></dl>
  476. </div>
  477. </div>
  478. <a class="anchor" id="a034d997a1e7a0b2b664a4357bcccd256"></a>
  479. <div class="memitem">
  480. <div class="memproto">
  481. <table class="memname">
  482. <tr>
  483. <td class="memname">bool FatVolume::init </td>
  484. <td>(</td>
  485. <td class="paramtype">uint8_t&#160;</td>
  486. <td class="paramname"><em>part</em></td><td>)</td>
  487. <td></td>
  488. </tr>
  489. </table>
  490. </div><div class="memdoc">
  491. <p>Initialize a FAT volume.</p>
  492. <dl class="params"><dt>Parameters</dt><dd>
  493. <table class="params">
  494. <tr><td class="paramdir">[in]</td><td class="paramname">part</td><td>The partition to be used. Legal values for <em>part</em> are 1-4 to use the corresponding partition on a device formatted with a MBR, Master Boot Record, or zero if the device is formatted as a super floppy with the FAT boot sector in block zero.</td></tr>
  495. </table>
  496. </dd>
  497. </dl>
  498. <dl class="section return"><dt>Returns</dt><dd>The value true is returned for success and the value false is returned for failure. </dd></dl>
  499. </div>
  500. </div>
  501. <a class="anchor" id="ab2d483670a0a6a6a4754b23614fe11bc"></a>
  502. <div class="memitem">
  503. <div class="memproto">
  504. <table class="mlabels">
  505. <tr>
  506. <td class="mlabels-left">
  507. <table class="memname">
  508. <tr>
  509. <td class="memname">uint16_t FatVolume::rootDirEntryCount </td>
  510. <td>(</td>
  511. <td class="paramname"></td><td>)</td>
  512. <td> const</td>
  513. </tr>
  514. </table>
  515. </td>
  516. <td class="mlabels-right">
  517. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  518. </tr>
  519. </table>
  520. </div><div class="memdoc">
  521. <dl class="section return"><dt>Returns</dt><dd>The number of entries in the root directory for FAT16 volumes. </dd></dl>
  522. </div>
  523. </div>
  524. <a class="anchor" id="ae9363ebbbae90e895ea56e8fa3f60c13"></a>
  525. <div class="memitem">
  526. <div class="memproto">
  527. <table class="mlabels">
  528. <tr>
  529. <td class="mlabels-left">
  530. <table class="memname">
  531. <tr>
  532. <td class="memname">uint32_t FatVolume::rootDirStart </td>
  533. <td>(</td>
  534. <td class="paramname"></td><td>)</td>
  535. <td> const</td>
  536. </tr>
  537. </table>
  538. </td>
  539. <td class="mlabels-right">
  540. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  541. </tr>
  542. </table>
  543. </div><div class="memdoc">
  544. <dl class="section return"><dt>Returns</dt><dd>The logical block number for the start of the root directory on FAT16 volumes or the first cluster number on FAT32 volumes. </dd></dl>
  545. </div>
  546. </div>
  547. <a class="anchor" id="a07bc98088ce4a9c725700899c184f7fc"></a>
  548. <div class="memitem">
  549. <div class="memproto">
  550. <table class="mlabels">
  551. <tr>
  552. <td class="mlabels-left">
  553. <table class="memname">
  554. <tr>
  555. <td class="memname">uint32_t FatVolume::volumeBlockCount </td>
  556. <td>(</td>
  557. <td class="paramname"></td><td>)</td>
  558. <td> const</td>
  559. </tr>
  560. </table>
  561. </td>
  562. <td class="mlabels-right">
  563. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  564. </tr>
  565. </table>
  566. </div><div class="memdoc">
  567. <dl class="section return"><dt>Returns</dt><dd>The number of blocks in the volume </dd></dl>
  568. </div>
  569. </div>
  570. <a class="anchor" id="a8088aa74cf601996905dadd2eea6966c"></a>
  571. <div class="memitem">
  572. <div class="memproto">
  573. <table class="memname">
  574. <tr>
  575. <td class="memname">bool FatVolume::wipe </td>
  576. <td>(</td>
  577. <td class="paramtype"><a class="el" href="_fat_volume_8h.html#ac62f6449331cfe1a71f29be30efe7890">print_t</a> *&#160;</td>
  578. <td class="paramname"><em>pr</em> = <code>0</code></td><td>)</td>
  579. <td></td>
  580. </tr>
  581. </table>
  582. </div><div class="memdoc">
  583. <p>Wipe all data from the volume. </p><dl class="params"><dt>Parameters</dt><dd>
  584. <table class="params">
  585. <tr><td class="paramdir">[in]</td><td class="paramname">pr</td><td>print stream for status dots. </td></tr>
  586. </table>
  587. </dd>
  588. </dl>
  589. <dl class="section return"><dt>Returns</dt><dd>true for success else false. </dd></dl>
  590. </div>
  591. </div>
  592. <hr/>The documentation for this class was generated from the following files:<ul>
  593. <li>Arduino/libraries/SdFat/src/FatLib/<a class="el" href="_fat_volume_8h.html">FatVolume.h</a></li>
  594. <li>Arduino/libraries/SdFat/src/FatLib/FatVolume.cpp</li>
  595. </ul>
  596. </div><!-- contents -->
  597. <!-- start footer part -->
  598. <hr class="footer"/><address class="footer"><small>
  599. Generated on Mon Sep 5 2016 10:18:52 for SdFat by &#160;<a href="http://www.doxygen.org/index.html">
  600. <img class="footer" src="doxygen.png" alt="doxygen"/>
  601. </a> 1.8.10
  602. </small></address>
  603. </body>
  604. </html>