pdc_8c.html

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<p>
Check remaining size of current receive buffer. 
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>dev</em>&nbsp;</td><td>pointer to the base memory address of the device</td></tr>
  </table>
</dl>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>number of free bytes remaining in the current receive buffer </dd></dl>

<p>
Definition at line <a class="el" href="pdc_8c-source.html#l00249">249</a> of file <a class="el" href="pdc_8c-source.html">pdc.c</a>.<div class="fragment"><pre class="fragment"><a name="l00250"></a>00250 {
<a name="l00251"></a>00251         <span class="keywordtype">int</span> bytes = 0;
<a name="l00252"></a>00252         bytes += ((<span class="keyword">struct </span><a class="code" href="structperipheral__t.html">peripheral_t</a> *)dev)-&gt;rcr;
<a name="l00253"></a>00253 
<a name="l00254"></a>00254         <span class="keywordflow">return</span> bytes;
<a name="l00255"></a>00255 }
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<a class="anchor" name="dd7ed0da82ce9355870e9daa04088b37"></a><!-- doxytag: member="pdc.c::pdc_getTcr" ref="dd7ed0da82ce9355870e9daa04088b37" args="(void *dev)" -->
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          <td class="memname">int pdc_getTcr           </td>
          <td>(</td>
          <td class="paramtype">void *&nbsp;</td>
          <td class="paramname"> <em>dev</em>          </td>
          <td>&nbsp;)&nbsp;</td>
          <td width="100%"></td>
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<p>
Check remaining size of current transmit buffer. 
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>dev</em>&nbsp;</td><td>pointer to the base memory address of the device</td></tr>
  </table>
</dl>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>number of free bytes remaining in the current transmit buffer </dd></dl>

<p>
Definition at line <a class="el" href="pdc_8c-source.html#l00280">280</a> of file <a class="el" href="pdc_8c-source.html">pdc.c</a>.<div class="fragment"><pre class="fragment"><a name="l00281"></a>00281 {
<a name="l00282"></a>00282         <span class="keywordtype">int</span> bytes = 0;
<a name="l00283"></a>00283         bytes += ((<span class="keyword">struct </span><a class="code" href="structperipheral__t.html">peripheral_t</a> *)dev)-&gt;tcr;
<a name="l00284"></a>00284 
<a name="l00285"></a>00285         <span class="keywordflow">return</span> bytes;
<a name="l00286"></a>00286 }
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<a class="anchor" name="d01334a29b7008e23adb4d02670b9291"></a><!-- doxytag: member="pdc.c::pdc_rxBytesLeft" ref="d01334a29b7008e23adb4d02670b9291" args="(void *dev)" -->
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          <td class="memname">int pdc_rxBytesLeft           </td>
          <td>(</td>
          <td class="paramtype">void *&nbsp;</td>
          <td class="paramname"> <em>dev</em>          </td>
          <td>&nbsp;)&nbsp;</td>
          <td width="100%"></td>
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<p>
Check total remaining size of the receive buffers. 
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>dev</em>&nbsp;</td><td>pointer to the base memory address of the device</td></tr>
  </table>
</dl>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>total number of free bytes remaining in the receive buffers </dd></dl>

<p>
Definition at line <a class="el" href="pdc_8c-source.html#l00264">264</a> of file <a class="el" href="pdc_8c-source.html">pdc.c</a>.<div class="fragment"><pre class="fragment"><a name="l00265"></a>00265 {
<a name="l00266"></a>00266         <span class="keywordtype">int</span> bytes = 0;
<a name="l00267"></a>00267         bytes += ((<span class="keyword">struct </span><a class="code" href="structperipheral__t.html">peripheral_t</a> *)dev)-&gt;rcr;
<a name="l00268"></a>00268         bytes += ((<span class="keyword">struct </span><a class="code" href="structperipheral__t.html">peripheral_t</a> *)dev)-&gt;rncr;
<a name="l00269"></a>00269 
<a name="l00270"></a>00270         <span class="keywordflow">return</span> bytes;
<a name="l00271"></a>00271 }
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<a class="anchor" name="eb0a9a90269a4fc9a797a72d187d1394"></a><!-- doxytag: member="pdc.c::pdc_setRxBuf" ref="eb0a9a90269a4fc9a797a72d187d1394" args="(void *dev, void *rp, unsigned short rc, void *rnp, unsigned short rnc)" -->
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          <td class="memname">void pdc_setRxBuf           </td>
          <td>(</td>
          <td class="paramtype">void *&nbsp;</td>
          <td class="paramname"> <em>dev</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">void *&nbsp;</td>
          <td class="paramname"> <em>rp</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">unsigned short&nbsp;</td>
          <td class="paramname"> <em>rc</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">void *&nbsp;</td>
          <td class="paramname"> <em>rnp</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">unsigned short&nbsp;</td>
          <td class="paramname"> <em>rnc</em></td><td>&nbsp;</td>
        </tr>
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          <td></td>
          <td>)</td>
          <td></td><td></td><td width="100%"></td>
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<p>
Give pointers and size of receive buffers to the PDC (Peripheral DMA Controller), and enables the receiver. 
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>dev</em>&nbsp;</td><td>pointer to the base memory address of the device </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>rp</em>&nbsp;</td><td>pointer to the receive buffer </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>rc</em>&nbsp;</td><td>size of the receive buffer </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>rnp</em>&nbsp;</td><td>pointer to the next receive buffer </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>rnc</em>&nbsp;</td><td>size of the next receive buffer </td></tr>
  </table>
</dl>

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Definition at line <a class="el" href="pdc_8c-source.html#l00138">138</a> of file <a class="el" href="pdc_8c-source.html">pdc.c</a>.
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References <a class="el" href="pdc_8c-source.html#l00086">pdc_disableRx()</a>, and <a class="el" href="pdc_8c-source.html#l00110">pdc_enableRx()</a>.
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Referenced by <a class="el" href="usart__example3_8c-source.html#l00047">main()</a>.<div class="fragment"><pre class="fragment"><a name="l00143"></a>00143 {
<a name="l00144"></a>00144         <a class="code" href="pdc_8c.html#f7ff3c2c5cdd78b2ea4bcdd4d534db4e">pdc_disableRx</a>( dev );
<a name="l00145"></a>00145 
<a name="l00146"></a>00146         <span class="keywordflow">if</span>( rp == 0 || rc == 0 ) {
<a name="l00147"></a>00147                 <span class="keywordflow">return</span>;
<a name="l00148"></a>00148         }
<a name="l00149"></a>00149 
<a name="l00150"></a>00150         ((<span class="keyword">struct </span><a class="code" href="structperipheral__t.html">peripheral_t</a> *)dev)-&gt;rpr = (long)rp;
<a name="l00151"></a>00151         ((<span class="keyword">struct </span><a class="code" href="structperipheral__t.html">peripheral_t</a> *)dev)-&gt;rcr = rc;
<a name="l00152"></a>00152 
<a name="l00153"></a>00153         <span class="keywordflow">if</span>( rnp != 0 ) {
<a name="l00154"></a>00154                 ((<span class="keyword">struct </span><a class="code" href="structperipheral__t.html">peripheral_t</a> *)dev)-&gt;rnpr = (long)rnp;
<a name="l00155"></a>00155                 ((<span class="keyword">struct </span><a class="code" href="structperipheral__t.html">peripheral_t</a> *)dev)-&gt;rncr = rnc;
<a name="l00156"></a>00156         }
<a name="l00157"></a>00157 
<a name="l00158"></a>00158         <a class="code" href="pdc_8c.html#f018b706f6ae4dc602ecbfaef2f7bc91">pdc_enableRx</a>( dev );
<a name="l00159"></a>00159 
<a name="l00160"></a>00160         <span class="keywordflow">return</span>;
<a name="l00161"></a>00161 }
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Here is the call graph for this function:
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<a class="anchor" name="2e23b778b9c8adba8c0083a330b09462"></a><!-- doxytag: member="pdc.c::pdc_setRxNextBuf" ref="2e23b778b9c8adba8c0083a330b09462" args="(void *dev, void *rnp, unsigned short rnc)" -->
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          <td class="memname">void pdc_setRxNextBuf           </td>
          <td>(</td>
          <td class="paramtype">void *&nbsp;</td>
          <td class="paramname"> <em>dev</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">void *&nbsp;</td>
          <td class="paramname"> <em>rnp</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">unsigned short&nbsp;</td>
          <td class="paramname"> <em>rnc</em></td><td>&nbsp;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td><td width="100%"></td>
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<p>
Give pointers and size of the next receive buffers to the PDC (Peripheral DMA Controller). 
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>dev</em>&nbsp;</td><td>pointer to the base memory address of the device </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>rnp</em>&nbsp;</td><td>pointer to the next receive buffer </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>rnc</em>&nbsp;</td><td>size of the next receive buffer </td></tr>
  </table>
</dl>

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Definition at line <a class="el" href="pdc_8c-source.html#l00171">171</a> of file <a class="el" href="pdc_8c-source.html">pdc.c</a>.
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Referenced by <a class="el" href="usart__example3_8c-source.html#l00030">usart_int_handler()</a>.<div class="fragment"><pre class="fragment"><a name="l00174"></a>00174 {
<a name="l00175"></a>00175         <span class="keywordflow">if</span>( rnp == 0 || rnc == 0 ) {
<a name="l00176"></a>00176                 <span class="keywordflow">return</span>;
<a name="l00177"></a>00177         }
<a name="l00178"></a>00178 
<a name="l00179"></a>00179         ((<span class="keyword">struct </span><a class="code" href="structperipheral__t.html">peripheral_t</a> *)dev)-&gt;rnpr = (long)rnp;
<a name="l00180"></a>00180         ((<span class="keyword">struct </span><a class="code" href="structperipheral__t.html">peripheral_t</a> *)dev)-&gt;rncr = rnc;
<a name="l00181"></a>00181 
<a name="l00182"></a>00182         <span class="keywordflow">return</span>;
<a name="l00183"></a>00183 }