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  86. <div class="headertitle">
  87. <div class="title">FatVolume Class Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div> </div>
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  89. <div class="contents">
  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>
  93. <div class="dynheader">
  94. Inheritance diagram for FatVolume:</div>
  95. <div class="dyncontent">
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  102. Public Member Functions</h2></td></tr>
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  109. <tr class="memitem:a18446a9c5924304fa7a87d5f03ccaf21"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_volume.html#a18446a9c5924304fa7a87d5f03ccaf21">clusterCount</a> () const </td></tr>
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  111. <tr class="memitem:ac0e63f33d71d5dc95a602834274def6a"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_volume.html#ac0e63f33d71d5dc95a602834274def6a">clusterSizeShift</a> () const </td></tr>
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  125. <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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  127. <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>
  128. <tr class="separator:acab819fa25a91dad1cc698a7e1e0eb32"><td class="memSeparator" colspan="2">&#160;</td></tr>
  129. <tr class="memitem:a034d997a1e7a0b2b664a4357bcccd256"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_volume.html#a034d997a1e7a0b2b664a4357bcccd256">init</a> (uint8_t part)</td></tr>
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  131. <tr class="memitem:ae86d9615ddfb386c1ba8af5de23519d9"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_volume.html#ae86d9615ddfb386c1ba8af5de23519d9">rootDirEntryCount</a> () const </td></tr>
  132. <tr class="separator:ae86d9615ddfb386c1ba8af5de23519d9"><td class="memSeparator" colspan="2">&#160;</td></tr>
  133. <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>
  134. <tr class="separator:ae9363ebbbae90e895ea56e8fa3f60c13"><td class="memSeparator" colspan="2">&#160;</td></tr>
  135. </table><table class="memberdecls">
  136. <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="friends"></a>
  137. Friends</h2></td></tr>
  138. <tr class="memitem:a1e97a7aed860b898c403cb29455b3fe7"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a1e97a7aed860b898c403cb29455b3fe7"></a>
  139. class&#160;</td><td class="memItemRight" valign="bottom"><b>FatCache</b></td></tr>
  140. <tr class="separator:a1e97a7aed860b898c403cb29455b3fe7"><td class="memSeparator" colspan="2">&#160;</td></tr>
  141. <tr class="memitem:a18fb15a715ea85037ab802286853103e"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a18fb15a715ea85037ab802286853103e"></a>
  142. class&#160;</td><td class="memItemRight" valign="bottom"><b>FatFile</b></td></tr>
  143. <tr class="separator:a18fb15a715ea85037ab802286853103e"><td class="memSeparator" colspan="2">&#160;</td></tr>
  144. </table>
  145. <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
  146. <div class="textblock"><p>Access FAT16 and FAT32 volumes on raw file devices. </p>
  147. </div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
  148. <a class="anchor" id="a026de2bb58026e4edea130db2949b84c"></a>
  149. <div class="memitem">
  150. <div class="memproto">
  151. <table class="mlabels">
  152. <tr>
  153. <td class="mlabels-left">
  154. <table class="memname">
  155. <tr>
  156. <td class="memname">FatVolume::FatVolume </td>
  157. <td>(</td>
  158. <td class="paramname"></td><td>)</td>
  159. <td></td>
  160. </tr>
  161. </table>
  162. </td>
  163. <td class="mlabels-right">
  164. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  165. </tr>
  166. </table>
  167. </div><div class="memdoc">
  168. <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>
  169. </div>
  170. </div>
  171. <h2 class="groupheader">Member Function Documentation</h2>
  172. <a class="anchor" id="a06beed4cea5e38116b58254a57125442"></a>
  173. <div class="memitem">
  174. <div class="memproto">
  175. <table class="mlabels">
  176. <tr>
  177. <td class="mlabels-left">
  178. <table class="memname">
  179. <tr>
  180. <td class="memname">uint8_t FatVolume::blocksPerCluster </td>
  181. <td>(</td>
  182. <td class="paramname"></td><td>)</td>
  183. <td> const</td>
  184. </tr>
  185. </table>
  186. </td>
  187. <td class="mlabels-right">
  188. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  189. </tr>
  190. </table>
  191. </div><div class="memdoc">
  192. <dl class="section return"><dt>Returns</dt><dd>The volume's cluster size in blocks. </dd></dl>
  193. </div>
  194. </div>
  195. <a class="anchor" id="abc66d856d05198d9ebe7104c8c4155d7"></a>
  196. <div class="memitem">
  197. <div class="memproto">
  198. <table class="mlabels">
  199. <tr>
  200. <td class="mlabels-left">
  201. <table class="memname">
  202. <tr>
  203. <td class="memname">uint32_t FatVolume::blocksPerFat </td>
  204. <td>(</td>
  205. <td class="paramname"></td><td>)</td>
  206. <td> const</td>
  207. </tr>
  208. </table>
  209. </td>
  210. <td class="mlabels-right">
  211. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  212. </tr>
  213. </table>
  214. </div><div class="memdoc">
  215. <dl class="section return"><dt>Returns</dt><dd>The number of blocks in one FAT. </dd></dl>
  216. </div>
  217. </div>
  218. <a class="anchor" id="aa1e3b1d0c21d202deb82668068ab00e8"></a>
  219. <div class="memitem">
  220. <div class="memproto">
  221. <table class="mlabels">
  222. <tr>
  223. <td class="mlabels-left">
  224. <table class="memname">
  225. <tr>
  226. <td class="memname"><a class="el" href="unioncache__t.html">cache_t</a>* FatVolume::cacheClear </td>
  227. <td>(</td>
  228. <td class="paramname"></td><td>)</td>
  229. <td></td>
  230. </tr>
  231. </table>
  232. </td>
  233. <td class="mlabels-right">
  234. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  235. </tr>
  236. </table>
  237. </div><div class="memdoc">
  238. <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>
  239. </div>
  240. </div>
  241. <a class="anchor" id="a18446a9c5924304fa7a87d5f03ccaf21"></a>
  242. <div class="memitem">
  243. <div class="memproto">
  244. <table class="mlabels">
  245. <tr>
  246. <td class="mlabels-left">
  247. <table class="memname">
  248. <tr>
  249. <td class="memname">uint32_t FatVolume::clusterCount </td>
  250. <td>(</td>
  251. <td class="paramname"></td><td>)</td>
  252. <td> const</td>
  253. </tr>
  254. </table>
  255. </td>
  256. <td class="mlabels-right">
  257. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  258. </tr>
  259. </table>
  260. </div><div class="memdoc">
  261. <dl class="section return"><dt>Returns</dt><dd>The total number of clusters in the volume. </dd></dl>
  262. </div>
  263. </div>
  264. <a class="anchor" id="ac0e63f33d71d5dc95a602834274def6a"></a>
  265. <div class="memitem">
  266. <div class="memproto">
  267. <table class="mlabels">
  268. <tr>
  269. <td class="mlabels-left">
  270. <table class="memname">
  271. <tr>
  272. <td class="memname">uint8_t FatVolume::clusterSizeShift </td>
  273. <td>(</td>
  274. <td class="paramname"></td><td>)</td>
  275. <td> const</td>
  276. </tr>
  277. </table>
  278. </td>
  279. <td class="mlabels-right">
  280. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  281. </tr>
  282. </table>
  283. </div><div class="memdoc">
  284. <dl class="section return"><dt>Returns</dt><dd>The shift count required to multiply by blocksPerCluster. </dd></dl>
  285. </div>
  286. </div>
  287. <a class="anchor" id="a443364af257c219f8e908d5b073d8fa3"></a>
  288. <div class="memitem">
  289. <div class="memproto">
  290. <table class="mlabels">
  291. <tr>
  292. <td class="mlabels-left">
  293. <table class="memname">
  294. <tr>
  295. <td class="memname">uint32_t FatVolume::dataStartBlock </td>
  296. <td>(</td>
  297. <td class="paramname"></td><td>)</td>
  298. <td> const</td>
  299. </tr>
  300. </table>
  301. </td>
  302. <td class="mlabels-right">
  303. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  304. </tr>
  305. </table>
  306. </div><div class="memdoc">
  307. <dl class="section return"><dt>Returns</dt><dd>The logical block number for the start of file data. </dd></dl>
  308. </div>
  309. </div>
  310. <a class="anchor" id="a2439fdebcf60a9226d2563600bbb752d"></a>
  311. <div class="memitem">
  312. <div class="memproto">
  313. <table class="mlabels">
  314. <tr>
  315. <td class="mlabels-left">
  316. <table class="memname">
  317. <tr>
  318. <td class="memname">bool FatVolume::dbgFat </td>
  319. <td>(</td>
  320. <td class="paramtype">uint32_t&#160;</td>
  321. <td class="paramname"><em>n</em>, </td>
  322. </tr>
  323. <tr>
  324. <td class="paramkey"></td>
  325. <td></td>
  326. <td class="paramtype">uint32_t *&#160;</td>
  327. <td class="paramname"><em>v</em>&#160;</td>
  328. </tr>
  329. <tr>
  330. <td></td>
  331. <td>)</td>
  332. <td></td><td></td>
  333. </tr>
  334. </table>
  335. </td>
  336. <td class="mlabels-right">
  337. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  338. </tr>
  339. </table>
  340. </div><div class="memdoc">
  341. <p>Debug access to FAT table</p>
  342. <dl class="params"><dt>Parameters</dt><dd>
  343. <table class="params">
  344. <tr><td class="paramdir">[in]</td><td class="paramname">n</td><td>cluster number. </td></tr>
  345. <tr><td class="paramdir">[out]</td><td class="paramname">v</td><td>value of entry </td></tr>
  346. </table>
  347. </dd>
  348. </dl>
  349. <dl class="section return"><dt>Returns</dt><dd>true for success or false for failure </dd></dl>
  350. </div>
  351. </div>
  352. <a class="anchor" id="acdedc6a200b01e401c9cd9b511eae6ec"></a>
  353. <div class="memitem">
  354. <div class="memproto">
  355. <table class="mlabels">
  356. <tr>
  357. <td class="mlabels-left">
  358. <table class="memname">
  359. <tr>
  360. <td class="memname">uint8_t FatVolume::fatCount </td>
  361. <td>(</td>
  362. <td class="paramname"></td><td>)</td>
  363. <td></td>
  364. </tr>
  365. </table>
  366. </td>
  367. <td class="mlabels-right">
  368. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  369. </tr>
  370. </table>
  371. </div><div class="memdoc">
  372. <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>
  373. </div>
  374. </div>
  375. <a class="anchor" id="a0dd0cc689b63ef0702aed1cf36b1722d"></a>
  376. <div class="memitem">
  377. <div class="memproto">
  378. <table class="mlabels">
  379. <tr>
  380. <td class="mlabels-left">
  381. <table class="memname">
  382. <tr>
  383. <td class="memname">uint32_t FatVolume::fatStartBlock </td>
  384. <td>(</td>
  385. <td class="paramname"></td><td>)</td>
  386. <td> const</td>
  387. </tr>
  388. </table>
  389. </td>
  390. <td class="mlabels-right">
  391. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  392. </tr>
  393. </table>
  394. </div><div class="memdoc">
  395. <dl class="section return"><dt>Returns</dt><dd>The logical block number for the start of the first FAT. </dd></dl>
  396. </div>
  397. </div>
  398. <a class="anchor" id="a1364f11fe9bb4717ce0685e2b7b86027"></a>
  399. <div class="memitem">
  400. <div class="memproto">
  401. <table class="mlabels">
  402. <tr>
  403. <td class="mlabels-left">
  404. <table class="memname">
  405. <tr>
  406. <td class="memname">uint8_t FatVolume::fatType </td>
  407. <td>(</td>
  408. <td class="paramname"></td><td>)</td>
  409. <td> const</td>
  410. </tr>
  411. </table>
  412. </td>
  413. <td class="mlabels-right">
  414. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  415. </tr>
  416. </table>
  417. </div><div class="memdoc">
  418. <dl class="section return"><dt>Returns</dt><dd>The FAT type of the volume. Values are 12, 16 or 32. </dd></dl>
  419. </div>
  420. </div>
  421. <a class="anchor" id="a1683b063fc6202ab85470b9610f16f93"></a>
  422. <div class="memitem">
  423. <div class="memproto">
  424. <table class="memname">
  425. <tr>
  426. <td class="memname">int32_t FatVolume::freeClusterCount </td>
  427. <td>(</td>
  428. <td class="paramname"></td><td>)</td>
  429. <td></td>
  430. </tr>
  431. </table>
  432. </div><div class="memdoc">
  433. <p>Volume free space in clusters.</p>
  434. <dl class="section return"><dt>Returns</dt><dd>Count of free clusters for success or -1 if an error occurs. </dd></dl>
  435. </div>
  436. </div>
  437. <a class="anchor" id="acab819fa25a91dad1cc698a7e1e0eb32"></a>
  438. <div class="memitem">
  439. <div class="memproto">
  440. <table class="mlabels">
  441. <tr>
  442. <td class="mlabels-left">
  443. <table class="memname">
  444. <tr>
  445. <td class="memname">bool FatVolume::init </td>
  446. <td>(</td>
  447. <td class="paramname"></td><td>)</td>
  448. <td></td>
  449. </tr>
  450. </table>
  451. </td>
  452. <td class="mlabels-right">
  453. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  454. </tr>
  455. </table>
  456. </div><div class="memdoc">
  457. <p>Initialize a FAT volume. Try partition one first then try super floppy format.</p>
  458. <dl class="section return"><dt>Returns</dt><dd>The value one, true, is returned for success and the value zero, false, is returned for failure. Reasons for failure include not finding a valid partition, not finding a valid FAT file system or an I/O error. </dd></dl>
  459. </div>
  460. </div>
  461. <a class="anchor" id="a034d997a1e7a0b2b664a4357bcccd256"></a>
  462. <div class="memitem">
  463. <div class="memproto">
  464. <table class="memname">
  465. <tr>
  466. <td class="memname">bool FatVolume::init </td>
  467. <td>(</td>
  468. <td class="paramtype">uint8_t&#160;</td>
  469. <td class="paramname"><em>part</em></td><td>)</td>
  470. <td></td>
  471. </tr>
  472. </table>
  473. </div><div class="memdoc">
  474. <p>Initialize a FAT volume.</p>
  475. <dl class="params"><dt>Parameters</dt><dd>
  476. <table class="params">
  477. <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>
  478. </table>
  479. </dd>
  480. </dl>
  481. <dl class="section return"><dt>Returns</dt><dd>The value one, true, is returned for success and the value zero, false, is returned for failure. Reasons for failure include not finding a valid partition, not finding a valid FAT file system in the specified partition or an I/O error. </dd></dl>
  482. </div>
  483. </div>
  484. <a class="anchor" id="ae86d9615ddfb386c1ba8af5de23519d9"></a>
  485. <div class="memitem">
  486. <div class="memproto">
  487. <table class="mlabels">
  488. <tr>
  489. <td class="mlabels-left">
  490. <table class="memname">
  491. <tr>
  492. <td class="memname">uint32_t FatVolume::rootDirEntryCount </td>
  493. <td>(</td>
  494. <td class="paramname"></td><td>)</td>
  495. <td> const</td>
  496. </tr>
  497. </table>
  498. </td>
  499. <td class="mlabels-right">
  500. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  501. </tr>
  502. </table>
  503. </div><div class="memdoc">
  504. <dl class="section return"><dt>Returns</dt><dd>The number of entries in the root directory for FAT16 volumes. </dd></dl>
  505. </div>
  506. </div>
  507. <a class="anchor" id="ae9363ebbbae90e895ea56e8fa3f60c13"></a>
  508. <div class="memitem">
  509. <div class="memproto">
  510. <table class="mlabels">
  511. <tr>
  512. <td class="mlabels-left">
  513. <table class="memname">
  514. <tr>
  515. <td class="memname">uint32_t FatVolume::rootDirStart </td>
  516. <td>(</td>
  517. <td class="paramname"></td><td>)</td>
  518. <td> const</td>
  519. </tr>
  520. </table>
  521. </td>
  522. <td class="mlabels-right">
  523. <span class="mlabels"><span class="mlabel">inline</span></span> </td>
  524. </tr>
  525. </table>
  526. </div><div class="memdoc">
  527. <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>
  528. </div>
  529. </div>
  530. <hr/>The documentation for this class was generated from the following files:<ul>
  531. <li>Arduino/libraries/SdFat/utility/<a class="el" href="_fat_volume_8h.html">FatVolume.h</a></li>
  532. <li>Arduino/libraries/SdFat/utility/FatVolume.cpp</li>
  533. </ul>
  534. </div><!-- contents -->
  535. <!-- start footer part -->
  536. <hr class="footer"/><address class="footer"><small>
  537. Generated on Sat Nov 15 2014 10:05:36 for SdFat by &#160;<a href="http://www.doxygen.org/index.html">
  538. <img class="footer" src="doxygen.png" alt="doxygen"/>
  539. </a> 1.8.8
  540. </small></address>
  541. </body>
  542. </html>