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<title>SDK4.0: DMA</title>
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<td id="projectalign" style="padding-left: 0.5em;">
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<div id="projectname">SDK4.0
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</div>
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<div id="projectbrief">This document shows Ameba SDK 4.0 APIs</div>
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<li><a href="annotated.html"><span>Data Structures</span></a></li>
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</div>
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<div class="header">
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<div class="headertitle">
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<div class="title">DMA<div class="ingroups"><a class="el" href="group__sdk.html">Ameba SDK</a> » <a class="el" href="group__hal.html">HAL</a></div></div> </div>
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</div><!--header-->
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<div class="contents">
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<p>dma functions
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<a href="#details">More...</a></p>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="member-group"></a>
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Ameba Common</h2></td></tr>
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<tr class="memitem:ga5e67339e2879aaee9a0540a3754ba3da"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga5e67339e2879aaee9a0540a3754ba3da"></a>
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typedef struct gdma_s </td><td class="memItemRight" valign="bottom"><b>gdma_t</b></td></tr>
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<tr class="separator:ga5e67339e2879aaee9a0540a3754ba3da"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga8c12f29c2491dcb5601e446eee38668f"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga8c12f29c2491dcb5601e446eee38668f"></a>
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typedef void(* </td><td class="memItemRight" valign="bottom"><b>dma_irq_handler</b>) (uint32_t id)</td></tr>
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<tr class="separator:ga8c12f29c2491dcb5601e446eee38668f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga5946d8694c72eaa94fce1cfa7799d39d"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__dma.html#ga5946d8694c72eaa94fce1cfa7799d39d">dma_memcpy_init</a> (gdma_t *dma_obj, dma_irq_handler handler, uint32_t id)</td></tr>
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<tr class="memdesc:ga5946d8694c72eaa94fce1cfa7799d39d"><td class="mdescLeft"> </td><td class="mdescRight">Initial the GDMA. <a href="#ga5946d8694c72eaa94fce1cfa7799d39d">More...</a><br /></td></tr>
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<tr class="separator:ga5946d8694c72eaa94fce1cfa7799d39d"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga7e67c54d1c74e40c412df824c21e3b3f"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__dma.html#ga7e67c54d1c74e40c412df824c21e3b3f">dma_memcpy_deinit</a> (gdma_t *dma_obj)</td></tr>
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<tr class="memdesc:ga7e67c54d1c74e40c412df824c21e3b3f"><td class="mdescLeft"> </td><td class="mdescRight">De-Initial the GDMA. <a href="#ga7e67c54d1c74e40c412df824c21e3b3f">More...</a><br /></td></tr>
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<tr class="separator:ga7e67c54d1c74e40c412df824c21e3b3f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gaeb4db1afbc2d38db2c67a8b637e6990b"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__dma.html#gaeb4db1afbc2d38db2c67a8b637e6990b">dma_memcpy</a> (gdma_t *dma_obj, void *dst, void *src, uint32_t len)</td></tr>
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<tr class="memdesc:gaeb4db1afbc2d38db2c67a8b637e6990b"><td class="mdescLeft"> </td><td class="mdescRight">To do a memory copy by DMA. <a href="#gaeb4db1afbc2d38db2c67a8b637e6990b">More...</a><br /></td></tr>
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<tr class="separator:gaeb4db1afbc2d38db2c67a8b637e6990b"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="member-group"></a>
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Ameba1 Only</h2></td></tr>
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<tr class="memitem:ga6b4f23f4d58993ee6c68242e8facbf26"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__dma.html#ga6b4f23f4d58993ee6c68242e8facbf26">dma_memcpy_aggr_init</a> (gdma_t *dma_obj, dma_irq_handler handler, uint32_t id)</td></tr>
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<tr class="memdesc:ga6b4f23f4d58993ee6c68242e8facbf26"><td class="mdescLeft"> </td><td class="mdescRight">Initial the GDMA. <a href="#ga6b4f23f4d58993ee6c68242e8facbf26">More...</a><br /></td></tr>
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<tr class="separator:ga6b4f23f4d58993ee6c68242e8facbf26"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga9062fb6521a1d099c0f129440117a149"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga9062fb6521a1d099c0f129440117a149"></a>
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void </td><td class="memItemRight" valign="bottom"><b>dma_memcpy_aggr</b> (gdma_t *dma_obj, PHAL_GDMA_BLOCK block_info)</td></tr>
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<tr class="separator:ga9062fb6521a1d099c0f129440117a149"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<p>dma functions </p>
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<h2 class="groupheader">Function Documentation</h2>
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<a class="anchor" id="gaeb4db1afbc2d38db2c67a8b637e6990b"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void dma_memcpy </td>
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<td>(</td>
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<td class="paramtype">gdma_t * </td>
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<td class="paramname"><em>dma_obj</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">void * </td>
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<td class="paramname"><em>dst</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">void * </td>
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<td class="paramname"><em>src</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>len</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>To do a memory copy by DMA. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">dma_obj</td><td>the GDMA object </td></tr>
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<tr><td class="paramname">dst</td><td>destination memory address </td></tr>
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<tr><td class="paramname">src</td><td>source memory address </td></tr>
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<tr><td class="paramname">len</td><td>copy data length </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="retval"><dt>Return values</dt><dd>
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<table class="retval">
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<tr><td class="paramname">None</td><td></td></tr>
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</table>
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</dd>
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</dl>
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</div>
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</div>
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<a class="anchor" id="ga6b4f23f4d58993ee6c68242e8facbf26"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void dma_memcpy_aggr_init </td>
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<td>(</td>
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<td class="paramtype">gdma_t * </td>
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<td class="paramname"><em>dma_obj</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">dma_irq_handler </td>
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<td class="paramname"><em>handler</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>id</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Initial the GDMA. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">dma_obj</td><td>the GDMA object </td></tr>
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<tr><td class="paramname">handler</td><td>the callback function for a DMA transfer complete. </td></tr>
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<tr><td class="paramname">id</td><td>the argument of the callback function. </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="retval"><dt>Return values</dt><dd>
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<table class="retval">
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<tr><td class="paramname">None</td><td></td></tr>
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</table>
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</dd>
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</dl>
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</div>
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</div>
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<a class="anchor" id="ga7e67c54d1c74e40c412df824c21e3b3f"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void dma_memcpy_deinit </td>
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<td>(</td>
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<td class="paramtype">gdma_t * </td>
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<td class="paramname"><em>dma_obj</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>De-Initial the GDMA. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">dma_obj</td><td>the GDMA object </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="retval"><dt>Return values</dt><dd>
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<table class="retval">
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<tr><td class="paramname">None</td><td></td></tr>
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</table>
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</dd>
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</dl>
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</div>
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</div>
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<a class="anchor" id="ga5946d8694c72eaa94fce1cfa7799d39d"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void dma_memcpy_init </td>
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<td>(</td>
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<td class="paramtype">gdma_t * </td>
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<td class="paramname"><em>dma_obj</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">dma_irq_handler </td>
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<td class="paramname"><em>handler</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>id</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Initial the GDMA. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">dma_obj</td><td>the GDMA object </td></tr>
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<tr><td class="paramname">handler</td><td>the callback function for a DMA transfer complete. </td></tr>
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<tr><td class="paramname">id</td><td>the argument of the callback function. </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="retval"><dt>Return values</dt><dd>
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<table class="retval">
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<tr><td class="paramname">None</td><td></td></tr>
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</table>
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</dd>
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</dl>
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</div>
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