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<a href="#pub-types">Public Types</a> &#124;
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<p>Raw access to SD and SDHC card using default SPI library.  
 <a href="class_sd2_card.html#details">More...</a></p>

<p><code>#include &lt;SdSpiCard.h&gt;</code></p>
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Inheritance diagram for Sd2Card:</div>
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Collaboration diagram for Sd2Card:</div>
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Public Types</h2></td></tr>
<tr class="memitem:a31a561750501b6635ad2b85c8c960381"><td class="memItemLeft" align="right" valign="top">typedef <a class="el" href="_sd_spi_8h.html#a312d9e68dd648980324728cc06d3bf6a">SpiDefault_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#a31a561750501b6635ad2b85c8c960381">m_spi_t</a></td></tr>
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Public Member Functions</h2></td></tr>
<tr class="memitem:a53eb48d9dae77c711460ed79d3fced4b"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd2_card.html#a53eb48d9dae77c711460ed79d3fced4b">begin</a> (uint8_t chipSelectPin=SS, uint8_t <a class="el" href="class_sd_spi_card.html#a0c2acfc8cdde3d35245b34018efcc6c7">sckDivisor</a>=2)</td></tr>
<tr class="separator:a53eb48d9dae77c711460ed79d3fced4b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:afca8bd6b7e465bf9c475ba375c4deec8"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#afca8bd6b7e465bf9c475ba375c4deec8">cardSize</a> ()</td></tr>
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<tr class="memitem:aaa4ec01e40371d6f00c8ed7e8d8eafbc"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#aaa4ec01e40371d6f00c8ed7e8d8eafbc">chipSelectHigh</a> ()</td></tr>
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<tr class="memitem:a198e62163012a9380a75ca69669ef4ae"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#a198e62163012a9380a75ca69669ef4ae">chipSelectLow</a> ()</td></tr>
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<tr class="memitem:a1caa13d19df6596b2c0dd62365c75362"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#a1caa13d19df6596b2c0dd62365c75362">erase</a> (uint32_t firstBlock, uint32_t lastBlock)</td></tr>
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<tr class="memitem:aed4591884254c9f58daa8738d7c1ccdd"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#aed4591884254c9f58daa8738d7c1ccdd">eraseSingleBlockEnable</a> ()</td></tr>
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<tr class="memitem:aa12ad53111abcb187d3c6119a3a77592"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#aa12ad53111abcb187d3c6119a3a77592">error</a> (uint8_t code)</td></tr>
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<tr class="memitem:a50bf5f92223222beacec2b203a6b7a95"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#a50bf5f92223222beacec2b203a6b7a95">errorCode</a> () const </td></tr>
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<tr class="memitem:a7b1abdb8dd5254cd4af0df19ba59ce4a"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#a7b1abdb8dd5254cd4af0df19ba59ce4a">errorData</a> () const </td></tr>
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<tr class="memitem:aa415ea708e5212a5b4154b7eb5c1a304"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd2_card.html#aa415ea708e5212a5b4154b7eb5c1a304">init</a> (uint8_t <a class="el" href="class_sd_spi_card.html#a0c2acfc8cdde3d35245b34018efcc6c7">sckDivisor</a>=2, uint8_t chipSelectPin=SS)</td></tr>
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<tr class="memitem:aa3cb9139dbc1e6596c6717da2b486328"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#aa3cb9139dbc1e6596c6717da2b486328">isBusy</a> ()</td></tr>
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<tr class="memitem:a2973091eeab7b6ba528f6442bc5df36e"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#a2973091eeab7b6ba528f6442bc5df36e">readBlock</a> (uint32_t block, uint8_t *dst)</td></tr>
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<tr class="memitem:a5a7e12a5a076cc690885378932fa289f"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#a5a7e12a5a076cc690885378932fa289f">readBlocks</a> (uint32_t block, uint8_t *dst, size_t count)</td></tr>
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<tr class="memitem:aa073dc42828164883db1b9faeff909ea"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#aa073dc42828164883db1b9faeff909ea">readCID</a> (cid_t *cid)</td></tr>
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<tr class="memitem:a9fbea9525e70f6e3602fe5153a5a1290"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#a9fbea9525e70f6e3602fe5153a5a1290">readCSD</a> (csd_t *csd)</td></tr>
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<tr class="memitem:a3a1d1b4b4ceb42fcd41aaf6649482770"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#a3a1d1b4b4ceb42fcd41aaf6649482770">readData</a> (uint8_t *dst)</td></tr>
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<tr class="memitem:ab446e49338b3ce834a750ac6dae35f61"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#ab446e49338b3ce834a750ac6dae35f61">readOCR</a> (uint32_t *ocr)</td></tr>
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<tr class="memitem:a3b1710d11496c32ba4323831e00ac6d1"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#a3b1710d11496c32ba4323831e00ac6d1">readStart</a> (uint32_t blockNumber)</td></tr>
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<tr class="memitem:afdac7c399fa1ba3f904cf503526e007e"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#afdac7c399fa1ba3f904cf503526e007e">readStop</a> ()</td></tr>
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<tr class="memitem:a0c2acfc8cdde3d35245b34018efcc6c7"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#a0c2acfc8cdde3d35245b34018efcc6c7">sckDivisor</a> ()</td></tr>
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<tr class="memitem:a3925d9021c378be9c025b2ae14501d6c"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#a3925d9021c378be9c025b2ae14501d6c">selected</a> ()</td></tr>
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<tr class="memitem:a061d92bf154a1863a6321385b7505f6e"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#a061d92bf154a1863a6321385b7505f6e">type</a> () const </td></tr>
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<tr class="memitem:acdf8c7fe62ab091971cd546c00714cee"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#acdf8c7fe62ab091971cd546c00714cee">writeBlock</a> (uint32_t blockNumber, const uint8_t *src)</td></tr>
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<tr class="memitem:aa5ca6901525dce4b1bc1f94a95441d88"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#aa5ca6901525dce4b1bc1f94a95441d88">writeBlocks</a> (uint32_t block, const uint8_t *src, size_t count)</td></tr>
<tr class="separator:aa5ca6901525dce4b1bc1f94a95441d88"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9495c0b148eb380358bb4a9721c0dffa"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#a9495c0b148eb380358bb4a9721c0dffa">writeData</a> (const uint8_t *src)</td></tr>
<tr class="separator:a9495c0b148eb380358bb4a9721c0dffa"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8bf0dc991308dcd2a7427bad89a9e2ba"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#a8bf0dc991308dcd2a7427bad89a9e2ba">writeStart</a> (uint32_t blockNumber, uint32_t eraseCount)</td></tr>
<tr class="separator:a8bf0dc991308dcd2a7427bad89a9e2ba"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aef9154785a4de5560fb807e4f9316fb0"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_spi_card.html#aef9154785a4de5560fb807e4f9316fb0">writeStop</a> ()</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 card using default SPI library. </p>
</div><h2 class="groupheader">Member Typedef Documentation</h2>
<a class="anchor" id="a31a561750501b6635ad2b85c8c960381"></a>
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          <td class="memname">typedef <a class="el" href="_sd_spi_8h.html#a312d9e68dd648980324728cc06d3bf6a">SpiDefault_t</a> <a class="el" href="class_sd_spi_card.html#a31a561750501b6635ad2b85c8c960381">SdSpiCard::m_spi_t</a></td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
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<p>typedef for SPI class. </p>

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<h2 class="groupheader">Member Function Documentation</h2>
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          <td class="memname">bool Sd2Card::begin </td>
          <td>(</td>
          <td class="paramtype">uint8_t&#160;</td>
          <td class="paramname"><em>chipSelectPin</em> = <code>SS</code>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint8_t&#160;</td>
          <td class="paramname"><em>sckDivisor</em> = <code>2</code>&#160;</td>
        </tr>
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          <td></td>
          <td>)</td>
          <td></td><td></td>
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<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">chipSelectPin</td><td>SD chip select pin. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">sckDivisor</td><td>SPI clock divisor. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success else false. </dd></dl>

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          <td class="memname">uint32_t SdSpiCard::cardSize </td>
          <td>(</td>
          <td class="paramname"></td><td>)</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 blocks in the card or zero if an error occurs. </dd></dl>

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          <td class="memname">void SdSpiCard::chipSelectHigh </td>
          <td>(</td>
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<p>Set the SD chip select pin high, send a dummy byte, and call SPI endTransaction.</p>
<p>This function should only be called by programs doing raw I/O to the SD. </p>

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          <td class="memname">void SdSpiCard::chipSelectLow </td>
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<p>Set the SD chip select pin low and call SPI beginTransaction.</p>
<p>This function should only be called by programs doing raw I/O to the SD. </p>

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          <td>(</td>
          <td class="paramtype">uint32_t&#160;</td>
          <td class="paramname"><em>firstBlock</em>, </td>
        </tr>
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          <td class="paramkey"></td>
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          <td class="paramtype">uint32_t&#160;</td>
          <td class="paramname"><em>lastBlock</em>&#160;</td>
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<p>Erase a range of blocks.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">firstBlock</td><td>The address of the first block in the range. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">lastBlock</td><td>The address of the last block 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 blocks. The data on the card after an erase operation is either 0 or 1, depends on the card vendor. The card must support single block erase.</dd></dl>
<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>

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          <td class="memname">bool SdSpiCard::eraseSingleBlockEnable </td>
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<p>Determine if card supports single block erase.</p>
<dl class="section return"><dt>Returns</dt><dd>true is returned if single block erase is supported. false is returned if single block erase is not supported. </dd></dl>

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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>
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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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          <td class="memname">int 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 <a class="el" href="_sd_spi_card_8h.html" title="SdSpiCard class for V2 SD/SDHC cards. ">SdSpiCard.h</a> for a list of error codes. </dd></dl>

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          <td class="memname">int SdSpiCard::errorData </td>
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          <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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          <td class="memname">bool Sd2Card::init </td>
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          <td class="paramtype">uint8_t&#160;</td>
          <td class="paramname"><em>sckDivisor</em> = <code>2</code>, </td>
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          <td class="paramtype">uint8_t&#160;</td>
          <td class="paramname"><em>chipSelectPin</em> = <code>SS</code>&#160;</td>
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<p>Initialize the SD card. Obsolete form. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">chipSelectPin</td><td>SD chip select pin. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">sckDivisor</td><td>SPI clock divisor. </td></tr>
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  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true for success else false. </dd></dl>

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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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          <td class="paramtype">uint32_t&#160;</td>
          <td class="paramname"><em>block</em>, </td>
        </tr>
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          <td class="paramtype">uint8_t *&#160;</td>
          <td class="paramname"><em>dst</em>&#160;</td>
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          <td>)</td>
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<p>Read a 512 byte block from an SD card.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">block</td><td>Logical block 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>The value true is returned for success and the value false is returned for failure. </dd></dl>

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          <td class="paramtype">uint32_t&#160;</td>
          <td class="paramname"><em>block</em>, </td>
        </tr>
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          <td></td>
          <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>count</em>&#160;</td>
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<p>Read multiple 512 byte blocks from an SD card.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">block</td><td>Logical block to be read. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">count</td><td>Number of blocks 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>The value true is returned for success and the value false is returned for failure. </dd></dl>

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          <td class="memname">bool SdSpiCard::readCID </td>
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          <td class="paramname"><em>cid</em></td><td>)</td>
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<p>Read a card's CID register. The CID 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>
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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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          <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>
  <table class="params">
    <tr><td class="paramdir">[out]</td><td class="paramname">csd</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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          <td class="paramname"><em>dst</em></td><td>)</td>
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<p>Read one data block in a multiple block 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>The value true is returned for success and the value false is returned for failure. </dd></dl>

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          <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 else false. </dd></dl>

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          <td class="paramtype">uint32_t&#160;</td>
          <td class="paramname"><em>blockNumber</em></td><td>)</td>
          <td></td>
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<p>Start a read multiple blocks sequence.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">blockNumber</td><td>Address of first block 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 block reads. SPI chipSelect must be low for the entire sequence.</dd></dl>
<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>

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<p>End a read multiple blocks sequence.</p>
<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>

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<p>Return SCK divisor.</p>
<dl class="section return"><dt>Returns</dt><dd>Requested SCK divisor. </dd></dl>

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<dl class="section return"><dt>Returns</dt><dd>the SD chip select status, true if slected else false. </dd></dl>

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          <td class="paramname"></td><td>)</td>
          <td> const</td>
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<p>Return the card type: SD V1, SD V2 or SDHC </p><dl class="section return"><dt>Returns</dt><dd>0 - SD V1, 1 - SD V2, or 3 - SDHC. </dd></dl>

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          <td class="paramtype">uint32_t&#160;</td>
          <td class="paramname"><em>blockNumber</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>
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<p>Writes a 512 byte block to an SD card.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">blockNumber</td><td>Logical block 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>The value true is returned for success and the value false is returned for failure. </dd></dl>

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          <td class="memname">bool SdSpiCard::writeBlocks </td>
          <td>(</td>
          <td class="paramtype">uint32_t&#160;</td>
          <td class="paramname"><em>block</em>, </td>
        </tr>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const uint8_t *&#160;</td>
          <td class="paramname"><em>src</em>, </td>
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          <td class="paramkey"></td>
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          <td class="paramtype">size_t&#160;</td>
          <td class="paramname"><em>count</em>&#160;</td>
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<p>Write multiple 512 byte blocks to an SD card.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">block</td><td>Logical block to be written. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">count</td><td>Number of blocks 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>The value true is returned for success and the value false is returned for failure. </dd></dl>

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          <td class="memname">bool SdSpiCard::writeData </td>
          <td>(</td>
          <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 block in a multiple block 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>
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<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>

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          <td class="memname">bool SdSpiCard::writeStart </td>
          <td>(</td>
          <td class="paramtype">uint32_t&#160;</td>
          <td class="paramname"><em>blockNumber</em>, </td>
        </tr>
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          <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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          <td></td><td></td>
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<p>Start a write multiple blocks sequence.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">blockNumber</td><td>Address of first block in sequence. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">eraseCount</td><td>The number of blocks 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 block writes.</dd></dl>
<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>

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          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
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<p>End a write multiple blocks sequence.</p>
<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>

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<hr/>The documentation for this class was generated from the following file:<ul>
<li>Arduino/libraries/SdFat/src/SdSpiCard/<a class="el" href="_sd_spi_card_8h.html">SdSpiCard.h</a></li>
</ul>
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