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ESP3D/extra-libraries/ESP8266/ESP8266SdFat/doc/html/class_sd_spi_card.html
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2023-10-02 19:55:18 +08:00

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<a href="#pub-methods">Public Member Functions</a> &#124;
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<div class="title">SdSpiCard Class Reference</div> </div>
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<p>Raw access to SD and SDHC flash memory cards via SPI protocol.
<a href="class_sd_spi_card.html#details">More...</a></p>
<p><code>#include &lt;SdSpiCard.h&gt;</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a6c256f8dcfa7f9d1fac165eed942ab73"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#a6c256f8dcfa7f9d1fac165eed942ab73">begin</a> (<a class="el" href="class_sd_spi_config.html">SdSpiConfig</a> spiConfig)</td></tr>
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<tr class="memitem:a904d56312d7a9cfc8bf33e3ad041c9eb"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#a904d56312d7a9cfc8bf33e3ad041c9eb">erase</a> (uint32_t firstSector, uint32_t lastSector)</td></tr>
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<tr class="memitem:a4165166d5d038c8f1c00c5a04e9f8a63"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#a4165166d5d038c8f1c00c5a04e9f8a63">writeSectors</a> (uint32_t sector, const uint8_t *src, size_t ns)</td></tr>
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<tr class="memitem:ae46068850a0cb9f142d5b0b0147716fa"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#ae46068850a0cb9f142d5b0b0147716fa">writeStart</a> (uint32_t sector)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Raw access to SD and SDHC flash memory cards via SPI protocol. </p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a id="a0441c5da53bd3bd72fb833fc940f25e8"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a0441c5da53bd3bd72fb833fc940f25e8">&#9670;&nbsp;</a></span>SdSpiCard()</h2>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
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<td class="memname">SdSpiCard::SdSpiCard </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Construct an instance of <a class="el" href="class_sd_spi_card.html" title="Raw access to SD and SDHC flash memory cards via SPI protocol.">SdSpiCard</a>. </p>
</div>
</div>
<h2 class="groupheader">Member Function Documentation</h2>
<a id="a6c256f8dcfa7f9d1fac165eed942ab73"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a6c256f8dcfa7f9d1fac165eed942ab73">&#9670;&nbsp;</a></span>begin()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">bool SdSpiCard::begin </td>
<td>(</td>
<td class="paramtype"><a class="el" href="class_sd_spi_config.html">SdSpiConfig</a>&#160;</td>
<td class="paramname"><em>spiConfig</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Initialize the SD card. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">spiConfig</td><td>SPI card configuration. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>
</div>
</div>
<a id="ab6cf8283dee415d9217eb758e75a98ef"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ab6cf8283dee415d9217eb758e75a98ef">&#9670;&nbsp;</a></span>dbgClearStats()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void SdSpiCard::dbgClearStats </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Clear debug stats. </p>
</div>
</div>
<a id="abdb02df511072aefb465a22858d92e06"></a>
<h2 class="memtitle"><span class="permalink"><a href="#abdb02df511072aefb465a22858d92e06">&#9670;&nbsp;</a></span>dbgPrintStats()</h2>
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<td class="memname">void SdSpiCard::dbgPrintStats </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
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</tr>
</table>
</div><div class="memdoc">
<p>Print debug stats. </p>
</div>
</div>
<a id="a904d56312d7a9cfc8bf33e3ad041c9eb"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a904d56312d7a9cfc8bf33e3ad041c9eb">&#9670;&nbsp;</a></span>erase()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">bool SdSpiCard::erase </td>
<td>(</td>
<td class="paramtype">uint32_t&#160;</td>
<td class="paramname"><em>firstSector</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint32_t&#160;</td>
<td class="paramname"><em>lastSector</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Erase a range of sectors.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">firstSector</td><td>The address of the first sector in the range. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">lastSector</td><td>The address of the last sector in the range.</td></tr>
</table>
</dd>
</dl>
<dl class="section note"><dt>Note</dt><dd>This function requests the SD card to do a flash erase for a range of sectors. The data on the card after an erase operation is either 0 or 1, depends on the card vendor. The card must support single sector erase.</dd></dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a1b137a1ab76da21379bc59efeac90e1f">&#9670;&nbsp;</a></span>eraseSingleSectorEnable()</h2>
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<td class="memname">bool SdSpiCard::eraseSingleSectorEnable </td>
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<p>Determine if card supports single sector erase.</p>
<dl class="section return"><dt>Returns</dt><dd>true is returned if single sector erase is supported. false is returned if single sector erase is not supported. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#aa12ad53111abcb187d3c6119a3a77592">&#9670;&nbsp;</a></span>error()</h2>
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<td class="memname">void SdSpiCard::error </td>
<td>(</td>
<td class="paramtype">uint8_t&#160;</td>
<td class="paramname"><em>code</em></td><td>)</td>
<td></td>
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<p>Set SD error code. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">code</td><td>value for error code. </td></tr>
</table>
</dd>
</dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ad14f9be4d9087db44309fdc6597c949e">&#9670;&nbsp;</a></span>errorCode()</h2>
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<td class="memname">uint8_t SdSpiCard::errorCode </td>
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<td class="paramname"></td><td>)</td>
<td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>code for the last error. See SdCardInfo.h for a list of error codes. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#aae2cc2a741646bb2aaabaf0547298de8">&#9670;&nbsp;</a></span>errorData()</h2>
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<td class="memname">uint32_t SdSpiCard::errorData </td>
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<td class="paramname"></td><td>)</td>
<td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>error data for last error. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#aa3cb9139dbc1e6596c6717da2b486328">&#9670;&nbsp;</a></span>isBusy()</h2>
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<td class="memname">bool SdSpiCard::isBusy </td>
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<p>Check for busy. MISO low indicates the card is busy.</p>
<dl class="section return"><dt>Returns</dt><dd>true if busy else false. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#aa073dc42828164883db1b9faeff909ea">&#9670;&nbsp;</a></span>readCID()</h2>
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<td class="memname">bool SdSpiCard::readCID </td>
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<td class="paramtype"><a class="el" href="struct_c_i_d.html">cid_t</a> *&#160;</td>
<td class="paramname"><em>cid</em></td><td>)</td>
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<p>Read a card's <a class="el" href="struct_c_i_d.html" title="Card IDentification (CID) register.">CID</a> register. The <a class="el" href="struct_c_i_d.html" title="Card IDentification (CID) register.">CID</a> contains card identification information such as Manufacturer ID, Product name, Product serial number and Manufacturing date.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[out]</td><td class="paramname">cid</td><td>pointer to area for returned data.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a9fbea9525e70f6e3602fe5153a5a1290">&#9670;&nbsp;</a></span>readCSD()</h2>
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<td class="memname">bool SdSpiCard::readCSD </td>
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<td class="paramtype">csd_t *&#160;</td>
<td class="paramname"><em>csd</em></td><td>)</td>
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<p>Read a card's CSD register. The CSD contains Card-Specific Data that provides information regarding access to the card's contents.</p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramdir">[out]</td><td class="paramname">csd</td><td>pointer to area for returned data.</td></tr>
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</dd>
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<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a3a1d1b4b4ceb42fcd41aaf6649482770">&#9670;&nbsp;</a></span>readData()</h2>
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<td class="memname">bool SdSpiCard::readData </td>
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<td class="paramtype">uint8_t *&#160;</td>
<td class="paramname"><em>dst</em></td><td>)</td>
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<p>Read one data sector in a multiple sector read sequence</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[out]</td><td class="paramname">dst</td><td>Pointer to the location for the data to be read.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ab446e49338b3ce834a750ac6dae35f61">&#9670;&nbsp;</a></span>readOCR()</h2>
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<td class="memname">bool SdSpiCard::readOCR </td>
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<td class="paramtype">uint32_t *&#160;</td>
<td class="paramname"><em>ocr</em></td><td>)</td>
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<p>Read OCR register.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[out]</td><td class="paramname">ocr</td><td>Value of OCR register. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#adbdb4df6d74ffa21df7f19a46c781f17">&#9670;&nbsp;</a></span>readSector()</h2>
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<td class="memname">bool SdSpiCard::readSector </td>
<td>(</td>
<td class="paramtype">uint32_t&#160;</td>
<td class="paramname"><em>sector</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint8_t *&#160;</td>
<td class="paramname"><em>dst</em>&#160;</td>
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<td>)</td>
<td></td><td></td>
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<p>Read a 512 byte sector from an SD card.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">sector</td><td>Logical sector to be read. </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">dst</td><td>Pointer to the location that will receive the data. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a248a56a6b15182c4d558f497c99fbf15">&#9670;&nbsp;</a></span>readSectors()</h2>
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<td class="memname">bool SdSpiCard::readSectors </td>
<td>(</td>
<td class="paramtype">uint32_t&#160;</td>
<td class="paramname"><em>sector</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">uint8_t *&#160;</td>
<td class="paramname"><em>dst</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t&#160;</td>
<td class="paramname"><em>ns</em>&#160;</td>
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<p>Read multiple 512 byte sectors from an SD card.</p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramdir">[in]</td><td class="paramname">sector</td><td>Logical sector to be read. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">ns</td><td>Number of sectors to be read. </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">dst</td><td>Pointer to the location that will receive the data. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a6eb6241369637ca07c0d1c3fe303750d">&#9670;&nbsp;</a></span>readSingle()</h2>
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<td class="memname">bool SdSpiCard::readSingle </td>
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<td class="paramtype">uint32_t&#160;</td>
<td class="paramname"><em>sector</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">uint8_t *&#160;</td>
<td class="paramname"><em>dst</em>&#160;</td>
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<p>Read a 512 byte sector from an SD card.</p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramdir">[in]</td><td class="paramname">sector</td><td>Logical sector to be read. </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">dst</td><td>Pointer to the location that will receive the data. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a6f10180a070fa01834cef47e70649a8e">&#9670;&nbsp;</a></span>readStart()</h2>
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<td class="memname">bool SdSpiCard::readStart </td>
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<td class="paramtype">uint32_t&#160;</td>
<td class="paramname"><em>sector</em></td><td>)</td>
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<p>Start a read multiple sector sequence.</p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramdir">[in]</td><td class="paramname">sector</td><td>Address of first sector in sequence.</td></tr>
</table>
</dd>
</dl>
<dl class="section note"><dt>Note</dt><dd>This function is used with <a class="el" href="class_sd_spi_card.html#a3a1d1b4b4ceb42fcd41aaf6649482770">readData()</a> and <a class="el" href="class_sd_spi_card.html#afdac7c399fa1ba3f904cf503526e007e">readStop()</a> for optimized multiple sector reads. SPI chipSelect must be low for the entire sequence.</dd></dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a91d0413599efe0d63c8c2dfe4a12d9ae">&#9670;&nbsp;</a></span>readStatus()</h2>
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<td class="memname">bool SdSpiCard::readStatus </td>
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<td class="paramtype">uint8_t *&#160;</td>
<td class="paramname"><em>status</em></td><td>)</td>
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<p>Return the 64 byte card status </p><dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramdir">[out]</td><td class="paramname">status</td><td>location for 64 status bytes. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#afdac7c399fa1ba3f904cf503526e007e">&#9670;&nbsp;</a></span>readStop()</h2>
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<td class="memname">bool SdSpiCard::readStop </td>
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<p>End a read multiple sectors sequence.</p>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a463ee796cf57c7e3e93f7817895fc492">&#9670;&nbsp;</a></span>sectorCount()</h2>
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<td class="memname">uint32_t SdSpiCard::sectorCount </td>
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<p>Determine the size of an SD flash memory card.</p>
<dl class="section return"><dt>Returns</dt><dd>The number of 512 byte data sectors in the card or zero if an error occurs. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#aa39feb6ebb269071ac6843a424ac311c">&#9670;&nbsp;</a></span>spiStart()</h2>
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<td class="memname">void SdSpiCard::spiStart </td>
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<p>Set CS low and activate the card. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a1033a4a68d38f52dddf6a1764fcca3e1">&#9670;&nbsp;</a></span>spiStop()</h2>
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<td class="memname">void SdSpiCard::spiStop </td>
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<p>Set CS high and deactivate the card. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ac9f3bfbfc5029f93da1fa233cbe617c4">&#9670;&nbsp;</a></span>syncDevice()</h2>
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<td class="memname">bool SdSpiCard::syncDevice </td>
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<dl class="section return"><dt>Returns</dt><dd>success if sync successful. Not for user apps. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ac53e0f3575db5be26dcba825bab3ca12">&#9670;&nbsp;</a></span>type()</h2>
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<td class="memname">uint8_t SdSpiCard::type </td>
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<p>Return the card type: SD V1, SD V2 or SDHC/SDXC </p><dl class="section return"><dt>Returns</dt><dd>0 - SD V1, 1 - SD V2, or 3 - SDHC/SDXC. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a9495c0b148eb380358bb4a9721c0dffa">&#9670;&nbsp;</a></span>writeData()</h2>
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<td class="memname">bool SdSpiCard::writeData </td>
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<td class="paramtype">const uint8_t *&#160;</td>
<td class="paramname"><em>src</em></td><td>)</td>
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<p>Write one data sector in a multiple sector write sequence. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">src</td><td>Pointer to the location of the data to be written. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a9a230924d82c5df07df592c571bc3fa5">&#9670;&nbsp;</a></span>writeSector()</h2>
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<td class="memname">bool SdSpiCard::writeSector </td>
<td>(</td>
<td class="paramtype">uint32_t&#160;</td>
<td class="paramname"><em>sector</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const uint8_t *&#160;</td>
<td class="paramname"><em>src</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
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<p>Writes a 512 byte sector to an SD card.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">sector</td><td>Logical sector to be written. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">src</td><td>Pointer to the location of the data to be written. </td></tr>
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</dd>
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<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>
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<a id="a4165166d5d038c8f1c00c5a04e9f8a63"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a4165166d5d038c8f1c00c5a04e9f8a63">&#9670;&nbsp;</a></span>writeSectors()</h2>
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<td class="memname">bool SdSpiCard::writeSectors </td>
<td>(</td>
<td class="paramtype">uint32_t&#160;</td>
<td class="paramname"><em>sector</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">const uint8_t *&#160;</td>
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<td class="paramtype">size_t&#160;</td>
<td class="paramname"><em>ns</em>&#160;</td>
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<td>)</td>
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<p>Write multiple 512 byte sectors to an SD card.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">sector</td><td>Logical sector to be written. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">ns</td><td>Number of sectors to be written. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">src</td><td>Pointer to the location of the data to be written. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a3172d671447410f19447b78b856a9689">&#9670;&nbsp;</a></span>writeSingle()</h2>
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<td class="memname">bool SdSpiCard::writeSingle </td>
<td>(</td>
<td class="paramtype">uint32_t&#160;</td>
<td class="paramname"><em>sector</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const uint8_t *&#160;</td>
<td class="paramname"><em>src</em>&#160;</td>
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<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<p>Writes a 512 byte sector to an SD card.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">sector</td><td>Logical sector to be written. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">src</td><td>Pointer to the location of the data to be written. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ae46068850a0cb9f142d5b0b0147716fa">&#9670;&nbsp;</a></span>writeStart() <span class="overload">[1/2]</span></h2>
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<td class="memname">bool SdSpiCard::writeStart </td>
<td>(</td>
<td class="paramtype">uint32_t&#160;</td>
<td class="paramname"><em>sector</em></td><td>)</td>
<td></td>
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<p>Start a write multiple sectors sequence.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">sector</td><td>Address of first sector in sequence.</td></tr>
</table>
</dd>
</dl>
<dl class="section note"><dt>Note</dt><dd>This function is used with <a class="el" href="class_sd_spi_card.html#a9495c0b148eb380358bb4a9721c0dffa">writeData()</a> and <a class="el" href="class_sd_spi_card.html#aef9154785a4de5560fb807e4f9316fb0">writeStop()</a> for optimized multiple sector writes.</dd></dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>
</div>
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<a id="a785250ef0281fbb1cbe5078de9e80be3"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a785250ef0281fbb1cbe5078de9e80be3">&#9670;&nbsp;</a></span>writeStart() <span class="overload">[2/2]</span></h2>
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<td class="memname">bool SdSpiCard::writeStart </td>
<td>(</td>
<td class="paramtype">uint32_t&#160;</td>
<td class="paramname"><em>sector</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint32_t&#160;</td>
<td class="paramname"><em>eraseCount</em>&#160;</td>
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<td>)</td>
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<p>Start a write multiple sector sequence with pre-erase.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">sector</td><td>Address of first sector in sequence. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">eraseCount</td><td>The number of sectors to be pre-erased.</td></tr>
</table>
</dd>
</dl>
<dl class="section note"><dt>Note</dt><dd>This function is used with <a class="el" href="class_sd_spi_card.html#a9495c0b148eb380358bb4a9721c0dffa">writeData()</a> and <a class="el" href="class_sd_spi_card.html#aef9154785a4de5560fb807e4f9316fb0">writeStop()</a> for optimized multiple sector writes.</dd></dl>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>
</div>
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<h2 class="memtitle"><span class="permalink"><a href="#aef9154785a4de5560fb807e4f9316fb0">&#9670;&nbsp;</a></span>writeStop()</h2>
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<td class="memname">bool SdSpiCard::writeStop </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td></td>
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<p>End a write multiple sectors sequence.</p>
<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure. </dd></dl>
</div>
</div>
<hr/>The documentation for this class was generated from the following files:<ul>
<li>Arduino/libraries/SdFat/src/SdCard/<a class="el" href="_sd_spi_card_8h.html">SdSpiCard.h</a></li>
<li>Arduino/libraries/SdFat/src/SdCard/SdSpiCard.cpp</li>
</ul>
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