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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"><title>sd-reader: FAT16 support</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.5.5 --><div class="navigation" id="top"> <div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="modules.html"><span>Modules</span></a></li> <li><a href="annotated.html"><span>Data Structures</span></a></li> <li><a href="files.html"><span>Files</span></a></li> </ul> </div></div><div class="contents"><h1>FAT16 support</h1><hr><a name="_details"></a><h2>Detailed Description</h2>This module implements FAT16 read and write access. <p>The following features are supported:<ul><li>File names up to 31 characters long.</li><li>Unlimited depth of subdirectories.</li><li>Short 8.3 and long filenames.</li><li>Creating and deleting files.</li><li>Reading and writing from and to files.</li><li>File resizing.</li><li>File sizes of up to 4 gigabytes. </li></ul><p><table border="0" cellpadding="0" cellspacing="0"><tr><td></td></tr><tr><td colspan="2"><br><h2>Files</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">file </td><td class="memItemRight" valign="bottom"><a class="el" href="fat16_8c.html">fat16.c</a></td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">FAT16 implementation (license: GPLv2 or LGPLv2.1). <br></td></tr><p><tr><td class="memItemLeft" nowrap align="right" valign="top">file </td><td class="memItemRight" valign="bottom"><a class="el" href="fat16_8h.html">fat16.h</a></td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">FAT16 header (license: GPLv2 or LGPLv2.1). <br></td></tr><p><tr><td class="memItemLeft" nowrap align="right" valign="top">file </td><td class="memItemRight" valign="bottom"><a class="el" href="fat16__config_8h.html">fat16_config.h</a></td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">FAT16 configuration (license: GPLv2 or LGPLv2.1). <br></td></tr><p><tr><td colspan="2"><br><h2>Modules</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16__config.html">FAT16 configuration</a></td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Preprocessor defines to configure the FAT16 implementation. <br></td></tr><p><tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16__fs.html">FAT16 access</a></td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Basic functions for handling a FAT16 filesystem. <br></td></tr><p><tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16__file.html">FAT16 file functions</a></td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Functions for managing files. <br></td></tr><p><tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16__dir.html">FAT16 directory functions</a></td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Functions for managing directories. <br></td></tr><p><tr><td colspan="2"><br><h2>Data Structures</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="structfat16__dir__entry__struct.html">fat16_dir_entry_struct</a></td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Describes a directory entry. <a href="structfat16__dir__entry__struct.html#_details">More...</a><br></td></tr><tr><td colspan="2"><br><h2>Functions</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">struct fat16_fs_struct * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16.html#gc176ec2f1bfa8c81972ea741a941e579">fat16_open</a> (struct <a class="el" href="structpartition__struct.html">partition_struct</a> *partition)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Opens a FAT16 filesystem. <a href="#gc176ec2f1bfa8c81972ea741a941e579"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16.html#g6588833571e6ef0f5d094b8ff56a5985">fat16_close</a> (struct fat16_fs_struct *fs)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Closes a FAT16 filesystem. <a href="#g6588833571e6ef0f5d094b8ff56a5985"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">struct fat16_file_struct * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16.html#g3a43c9943251749978645ad8e3f16757">fat16_open_file</a> (struct fat16_fs_struct *fs, const struct <a class="el" href="structfat16__dir__entry__struct.html">fat16_dir_entry_struct</a> *dir_entry)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Opens a file on a FAT16 filesystem. <a href="#g3a43c9943251749978645ad8e3f16757"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16.html#g2b2812041f489bc7913bfa5cbcf0172b">fat16_close_file</a> (struct fat16_file_struct *fd)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Closes a file. <a href="#g2b2812041f489bc7913bfa5cbcf0172b"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">int16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16.html#g0af2ef3d690626a5640a334cefbb27a6">fat16_read_file</a> (struct fat16_file_struct *fd, uint8_t *buffer, uint16_t buffer_len)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Reads data from a file. <a href="#g0af2ef3d690626a5640a334cefbb27a6"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">int16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16.html#g4f0c785a47b1cf070839b5edec2c6f65">fat16_write_file</a> (struct fat16_file_struct *fd, const uint8_t *buffer, uint16_t buffer_len)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Writes data to a file. <a href="#g4f0c785a47b1cf070839b5edec2c6f65"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16.html#gf1511fd1a5419d0828265566dc5d33e4">fat16_seek_file</a> (struct fat16_file_struct *fd, int32_t *offset, uint8_t whence)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Repositions the read/write file offset. <a href="#gf1511fd1a5419d0828265566dc5d33e4"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16.html#g23740742fa60ca148ef098caac7085c0">fat16_resize_file</a> (struct fat16_file_struct *fd, uint32_t size)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Resizes a file to have a specific size. <a href="#g23740742fa60ca148ef098caac7085c0"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">struct fat16_dir_struct * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16.html#g9704120fef030632a76d91cfbbef78b0">fat16_open_dir</a> (struct fat16_fs_struct *fs, const struct <a class="el" href="structfat16__dir__entry__struct.html">fat16_dir_entry_struct</a> *dir_entry)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Opens a directory. <a href="#g9704120fef030632a76d91cfbbef78b0"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16.html#g95f491a5a0b6438781aefaedc250e926">fat16_close_dir</a> (struct fat16_dir_struct *dd)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Closes a directory descriptor. <a href="#g95f491a5a0b6438781aefaedc250e926"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16.html#g73c8f0598e8224736b09644c48cf2970">fat16_read_dir</a> (struct fat16_dir_struct *dd, struct <a class="el" href="structfat16__dir__entry__struct.html">fat16_dir_entry_struct</a> *dir_entry)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Reads the next directory entry contained within a parent directory. <a href="#g73c8f0598e8224736b09644c48cf2970"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16.html#gaed63addc9b9a3d5137f3b552abb42d8">fat16_reset_dir</a> (struct fat16_dir_struct *dd)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Resets a directory handle. <a href="#gaed63addc9b9a3d5137f3b552abb42d8"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16.html#gf8029e3ec633902d08e8204d13afc350">fat16_create_file</a> (struct fat16_dir_struct *parent, const char *file, struct <a class="el" href="structfat16__dir__entry__struct.html">fat16_dir_entry_struct</a> *dir_entry)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a file. <a href="#gf8029e3ec633902d08e8204d13afc350"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16.html#ge060faccbbeca802afe86be2f4d5b485">fat16_delete_file</a> (struct fat16_fs_struct *fs, struct <a class="el" href="structfat16__dir__entry__struct.html">fat16_dir_entry_struct</a> *dir_entry)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Deletes a file or directory. <a href="#ge060faccbbeca802afe86be2f4d5b485"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16.html#g973def42513263e311ffa8e21f42b287">fat16_create_dir</a> (struct fat16_dir_struct *parent, const char *dir, struct <a class="el" href="structfat16__dir__entry__struct.html">fat16_dir_entry_struct</a> *dir_entry)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a directory. <a href="#g973def42513263e311ffa8e21f42b287"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16.html#g82c7347c5b3cd8832633d5303552eb38">fat16_get_file_modification_date</a> (const struct <a class="el" href="structfat16__dir__entry__struct.html">fat16_dir_entry_struct</a> *dir_entry, uint16_t *year, uint8_t *month, uint8_t *day)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the modification date of a file. <a href="#g82c7347c5b3cd8832633d5303552eb38"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16.html#g5040fcab753ef55337292daf8c0d6784">fat16_get_file_modification_time</a> (const struct <a class="el" href="structfat16__dir__entry__struct.html">fat16_dir_entry_struct</a> *dir_entry, uint8_t *hour, uint8_t *min, uint8_t *sec)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the modification time of a file. <a href="#g5040fcab753ef55337292daf8c0d6784"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16.html#g0045fe378de2f7c52b528f985e1891a6">fat16_get_dir_entry_of_path</a> (struct fat16_fs_struct *fs, const char *path, struct <a class="el" href="structfat16__dir__entry__struct.html">fat16_dir_entry_struct</a> *dir_entry)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Retrieves the directory entry of a path. <a href="#g0045fe378de2f7c52b528f985e1891a6"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16.html#g8af3c3535929e19b0039e07f1976cec7">fat16_get_fs_size</a> (const struct fat16_fs_struct *fs)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the amount of total storage capacity of the filesystem in bytes. <a href="#g8af3c3535929e19b0039e07f1976cec7"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__fat16.html#g2f8ff07cca44ecb6770b12a58b6cd8c7">fat16_get_fs_free</a> (const struct fat16_fs_struct *fs)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the amount of free storage capacity on the filesystem in bytes. <a href="#g2f8ff07cca44ecb6770b12a58b6cd8c7"></a><br></td></tr></table><hr><h2>Function Documentation</h2><a class="anchor" name="g6588833571e6ef0f5d094b8ff56a5985"></a><!-- doxytag: member="fat16.h::fat16_close" ref="g6588833571e6ef0f5d094b8ff56a5985" args="(struct fat16_fs_struct *fs)" --><div class="memitem"><div class="memproto"> <table class="memname"> <tr> <td class="memname">void fat16_close </td> <td>(</td> <td class="paramtype">struct fat16_fs_struct * </td> <td class="paramname"> <em>fs</em> </td> <td> ) </td> <td width="100%"></td> </tr> </table></div><div class="memdoc"><p>Closes a FAT16 filesystem. <p>When this function returns, the given filesystem descriptor will be invalid.<p><dl compact><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td valign="top"><tt>[in]</tt> </td><td valign="top"><em>fs</em> </td><td>The filesystem to close. </td></tr> </table></dl><dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="group__fat16.html#gc176ec2f1bfa8c81972ea741a941e579" title="Opens a FAT16 filesystem.">fat16_open</a> </dd></dl></div></div><p><a class="anchor" name="g95f491a5a0b6438781aefaedc250e926"></a><!-- doxytag: member="fat16.h::fat16_close_dir" ref="g95f491a5a0b6438781aefaedc250e926" args="(struct fat16_dir_struct *dd)" --><div class="memitem"><div class="memproto"> <table class="memname"> <tr> <td class="memname">void fat16_close_dir </td> <td>(</td> <td class="paramtype">struct fat16_dir_struct * </td> <td class="paramname"> <em>dd</em> </td> <td> ) </td> <td width="100%"></td> </tr> </table></div><div class="memdoc"><p>Closes a directory descriptor. <p>This function destroys a directory descriptor which was previously obtained by calling <a class="el" href="group__fat16__dir.html#g9704120fef030632a76d91cfbbef78b0" title="Opens a directory.">fat16_open_dir()</a>. When this function returns, the given descriptor will be invalid.<p><dl compact><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td valign="top"><tt>[in]</tt> </td><td valign="top"><em>dd</em> </td><td>The directory descriptor to close. </td></tr> </table></dl><dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="group__fat16.html#g9704120fef030632a76d91cfbbef78b0" title="Opens a directory.">fat16_open_dir</a> </dd></dl></div></div><p><a class="anchor" name="g2b2812041f489bc7913bfa5cbcf0172b"></a><!-- doxytag: member="fat16.h::fat16_close_file" ref="g2b2812041f489bc7913bfa5cbcf0172b" args="(struct fat16_file_struct *fd)" --><div class="memitem"><div class="memproto"> <table class="memname"> <tr> <td class="memname">void fat16_close_file </td> <td>(</td> <td class="paramtype">struct fat16_file_struct * </td> <td class="paramname"> <em>fd</em> </td> <td> ) </td> <td width="100%"></td> </tr> </table></div><div class="memdoc"><p>Closes a file. <p><dl compact><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td valign="top"><tt>[in]</tt> </td><td valign="top"><em>fd</em> </td><td>The file handle of the file to close. </td></tr> </table></dl><dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="group__fat16.html#g3a43c9943251749978645ad8e3f16757" title="Opens a file on a FAT16 filesystem.">fat16_open_file</a> </dd></dl></div></div><p><a class="anchor" name="g973def42513263e311ffa8e21f42b287"></a><!-- doxytag: member="fat16.h::fat16_create_dir" ref="g973def42513263e311ffa8e21f42b287" args="(struct fat16_dir_struct *parent, const char *dir, struct fat16_dir_entry_struct *dir_entry)" --><div class="memitem"><div class="memproto"> <table class="memname"> <tr> <td class="memname">uint8_t fat16_create_dir </td> <td>(</td> <td class="paramtype">struct fat16_dir_struct * </td> <td class="paramname"> <em>parent</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const char * </td> <td class="paramname"> <em>dir</em>, </td> </tr>?? 快捷鍵說明
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