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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=iso-8859-1"><title>sd-reader: MMC/SD card raw access</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.4.6 --><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><h1>MMC/SD card raw access</h1><hr><a name="_details"></a><h2>Detailed Description</h2>This module implements read and write access to MMC and SD cards. <p>It serves as a low-level driver for the higher level modules such as partition and file system access. <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="sd__raw_8c.html">sd_raw.c</a></td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">MMC/SD raw access implementation. <br></td></tr><p><tr><td class="memItemLeft" nowrap align="right" valign="top">file </td><td class="memItemRight" valign="bottom"><a class="el" href="sd__raw_8h.html">sd_raw.h</a></td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">MMC/SD raw access header. <br></td></tr><p><tr><td class="memItemLeft" nowrap align="right" valign="top">file </td><td class="memItemRight" valign="bottom"><a class="el" href="sd__raw__config_8h.html">sd_raw_config.h</a></td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">MMC/SD support configuration. <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__sd__raw__config.html">MMC/SD configuration</a></td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Preprocessor defines to configure the MMC/SD support. <br></td></tr><p><tr><td colspan="2"><br><h2>Functions</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__sd__raw.html#g82e8599b2679451e491484fb0b19bfd5">sd_raw_init</a> ()</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Initializes memory card communication. <a href="#g82e8599b2679451e491484fb0b19bfd5"></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__sd__raw.html#g5e227f25ad4a18466e7cdd9ecdfce8ab">sd_raw_available</a> ()</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Checks wether a memory card is located in the slot. <a href="#g5e227f25ad4a18466e7cdd9ecdfce8ab"></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__sd__raw.html#g55f311428473cd5b85cf8f24ffba121b">sd_raw_locked</a> ()</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Checks wether the memory card is locked for write access. <a href="#g55f311428473cd5b85cf8f24ffba121b"></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__sd__raw.html#g5f69513fd8228ea269a61f1dff737129">sd_raw_read</a> (uint32_t offset, uint8_t *buffer, uint16_t length)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Reads raw data from the card. <a href="#g5f69513fd8228ea269a61f1dff737129"></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__sd__raw.html#gbf550aa783830a0b77bd3e753dc4405c">sd_raw_read_interval</a> (uint32_t offset, uint8_t *buffer, uint16_t interval, uint16_t length, sd_raw_interval_handler callback, void *p)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Continuously reads units of <code>interval</code> bytes and calls a callback function. <a href="#gbf550aa783830a0b77bd3e753dc4405c"></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__sd__raw.html#g51fc917873e34e96cb981fbbb47a69c5">sd_raw_write</a> (uint32_t offset, const uint8_t *buffer, uint16_t length)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Writes raw data to the card. <a href="#g51fc917873e34e96cb981fbbb47a69c5"></a><br></td></tr></table><hr><h2>Function Documentation</h2><a class="anchor" name="g5e227f25ad4a18466e7cdd9ecdfce8ab"></a><!-- doxytag: member="sd_raw.c::sd_raw_available" ref="g5e227f25ad4a18466e7cdd9ecdfce8ab" args="()" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">uint8_t sd_raw_available </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top"> ) </td> <td class="md" nowrap></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p>Checks wether a memory card is located in the slot. <p><dl compact><dt><b>Returns:</b></dt><dd>1 if the card is available, 0 if it is not. </dd></dl> </td> </tr></table><a class="anchor" name="g82e8599b2679451e491484fb0b19bfd5"></a><!-- doxytag: member="sd_raw.c::sd_raw_init" ref="g82e8599b2679451e491484fb0b19bfd5" args="()" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">uint8_t sd_raw_init </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top"> ) </td> <td class="md" nowrap></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p>Initializes memory card communication. <p><dl compact><dt><b>Returns:</b></dt><dd>0 on failure, 1 on success. </dd></dl> </td> </tr></table><a class="anchor" name="g55f311428473cd5b85cf8f24ffba121b"></a><!-- doxytag: member="sd_raw.c::sd_raw_locked" ref="g55f311428473cd5b85cf8f24ffba121b" args="()" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">uint8_t sd_raw_locked </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top"> ) </td> <td class="md" nowrap></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p>Checks wether the memory card is locked for write access. <p><dl compact><dt><b>Returns:</b></dt><dd>1 if the card is locked, 0 if it is not. </dd></dl> </td> </tr></table><a class="anchor" name="g5f69513fd8228ea269a61f1dff737129"></a><!-- doxytag: member="sd_raw.c::sd_raw_read" ref="g5f69513fd8228ea269a61f1dff737129" args="(uint32_t offset, uint8_t *buffer, uint16_t length)" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">uint8_t sd_raw_read </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top">uint32_t </td> <td class="mdname" nowrap> <em>offset</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap>uint8_t * </td> <td class="mdname" nowrap> <em>buffer</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap>uint16_t </td>⌨️ 快捷键说明
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