usart__example_8c.html

avr32100.zip Embedded demo

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<a class="anchor" name="0789f45a4ff69e0f650c2d3e2fdf35bb"></a><!-- doxytag: member="usart_example.c::pio_enable_module" ref="0789f45a4ff69e0f650c2d3e2fdf35bb" args="(avr32_piomap_t piomap, unsigned int size)" -->
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          <td class="memname">int pio_enable_module           </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="usart__example_8c.html#8a26ea9b2ab943a38ada2d6ca9282231">avr32_piomap_t</a>&nbsp;</td>
          <td class="paramname"> <em>piomap</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">unsigned int&nbsp;</td>
          <td class="paramname"> <em>size</em></td><td>&nbsp;</td>
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          <td></td>
          <td>)</td>
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Set the pins under module control. 
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<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>piomap</em>&nbsp;</td><td>a map describing how the setup of the PIO </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>size</em>&nbsp;</td><td>number of elements in the map</td></tr>
  </table>
</dl>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>Status or error code </dd></dl>
<dl compact><dt><b>Return values:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>SUCCESS</em>&nbsp;</td><td>on success </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>FAILURE</em>&nbsp;</td><td>on bad values in piomap </td></tr>
  </table>
</dl>

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Definition at line <a class="el" href="usart__example_8c-source.html#l00150">150</a> of file <a class="el" href="usart__example_8c-source.html">usart_example.c</a>.
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References <a class="el" href="usart__example_8c-source.html#l00062">FAILURE</a>.
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Referenced by <a class="el" href="usart__example_8c-source.html#l00096">main()</a>.<div class="fragment"><pre class="fragment"><a name="l00151"></a>00151 {
<a name="l00152"></a>00152   <span class="keywordtype">int</span> i;
<a name="l00153"></a>00153   <span class="keyword">volatile</span> <span class="keyword">struct </span>avr32_pio_t *pio;
<a name="l00154"></a>00154 
<a name="l00155"></a>00155   <span class="comment">/* get the base address for the port */</span>
<a name="l00156"></a>00156   <span class="keywordflow">switch</span> (**piomap/32) {
<a name="l00157"></a>00157 
<a name="l00158"></a>00158   <span class="keywordflow">case</span> 0:
<a name="l00159"></a>00159     pio = &amp;AVR32_PIOA;
<a name="l00160"></a>00160     <span class="keywordflow">break</span>;
<a name="l00161"></a>00161   <span class="keywordflow">case</span> 1:
<a name="l00162"></a>00162     pio = &amp;AVR32_PIOB;
<a name="l00163"></a>00163     <span class="keywordflow">break</span>;
<a name="l00164"></a>00164   <span class="keywordflow">case</span> 2:
<a name="l00165"></a>00165     pio = &amp;AVR32_PIOC;
<a name="l00166"></a>00166     <span class="keywordflow">break</span>;
<a name="l00167"></a>00167   <span class="keywordflow">case</span> 3:
<a name="l00168"></a>00168     pio = &amp;AVR32_PIOD;
<a name="l00169"></a>00169     <span class="keywordflow">break</span>;
<a name="l00170"></a>00170   <span class="keywordflow">case</span> 4:
<a name="l00171"></a>00171     pio = &amp;AVR32_PIOE;
<a name="l00172"></a>00172     <span class="keywordflow">break</span>;
<a name="l00173"></a>00173   <span class="keywordflow">default</span> :
<a name="l00174"></a>00174     <span class="keywordflow">return</span> <a class="code" href="usart__example_8c.html#6d58f9ac447476b4e084d7ca383f5183">FAILURE</a>;
<a name="l00175"></a>00175 
<a name="l00176"></a>00176   }
<a name="l00177"></a>00177 
<a name="l00178"></a>00178   <span class="keywordflow">for</span>(i=0; i&lt;size; i++){
<a name="l00179"></a>00179 
<a name="l00180"></a>00180     pio-&gt;pdr |= ( 1&lt;&lt;( (**piomap) % 32) );
<a name="l00181"></a>00181     pio-&gt;pudr |= ( 1&lt;&lt;( (**piomap) % 32) );
<a name="l00182"></a>00182 
<a name="l00183"></a>00183     <span class="keywordflow">switch</span>( *(*piomap+1) ){    
<a name="l00184"></a>00184     <span class="keywordflow">case</span> 0:
<a name="l00185"></a>00185       pio-&gt;asr |= ( 1&lt;&lt;( (**piomap) % 32) );
<a name="l00186"></a>00186       <span class="keywordflow">break</span>;
<a name="l00187"></a>00187     <span class="keywordflow">case</span> 1:
<a name="l00188"></a>00188       pio-&gt;bsr |= ( 1&lt;&lt;( (**piomap) % 32) );
<a name="l00189"></a>00189       <span class="keywordflow">break</span>;
<a name="l00190"></a>00190     <span class="keywordflow">default</span>:
<a name="l00191"></a>00191       <span class="keywordflow">return</span> <a class="code" href="usart__example_8c.html#6d58f9ac447476b4e084d7ca383f5183">FAILURE</a>;
<a name="l00192"></a>00192     }
<a name="l00193"></a>00193 
<a name="l00194"></a>00194     ++piomap;
<a name="l00195"></a>00195 
<a name="l00196"></a>00196   }
<a name="l00197"></a>00197   
<a name="l00198"></a>00198   <span class="keywordflow">return</span> <a class="code" href="usart__example_8c.html#a90cac659d18e8ef6294c7ae337f6b58">SUCCESS</a>;
<a name="l00199"></a>00199 }
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<a class="anchor" name="2929a2158663c710a90f2d760007397a"></a><!-- doxytag: member="usart_example.c::print" ref="2929a2158663c710a90f2d760007397a" args="(volatile struct avr32_usart_t *usart, char *str)" -->
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          <td class="memname">void print           </td>
          <td>(</td>
          <td class="paramtype">volatile struct avr32_usart_t *&nbsp;</td>
          <td class="paramname"> <em>usart</em>, </td>
        </tr>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">char *&nbsp;</td>
          <td class="paramname"> <em>str</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>
Print a string of characters to an usart. 
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<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>*usart</em>&nbsp;</td><td>The usart to write to </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>*str</em>&nbsp;</td><td>The string of characters</td></tr>
  </table>
</dl>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>; </dd></dl>

<p>
Definition at line <a class="el" href="usart__example_8c-source.html#l00134">134</a> of file <a class="el" href="usart__example_8c-source.html">usart_example.c</a>.
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References <a class="el" href="usart_8c-source.html#l00538">usart_putchar()</a>.
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Referenced by <a class="el" href="usart__example_8c-source.html#l00096">main()</a>.<div class="fragment"><pre class="fragment"><a name="l00135"></a>00135 {
<a name="l00136"></a>00136         <span class="keywordflow">while</span> (*str != <span class="charliteral">'\0'</span>)
<a name="l00137"></a>00137                 <a class="code" href="usart_8c.html#908695fc913f77a6c1ab2a89e201a1fd">usart_putchar</a>(usart, *str++);
<a name="l00138"></a>00138 }
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<hr size="1"><address style="align: right;"><small>Generated on Thu May 10 14:17:57 2007 for AVR321000 Communication with the AVR32 USART by&nbsp;
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.1 </small></address>
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