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<tr><td valign="top"></td><td valign="top"><em>usart</em> </td><td>base address of the usart </td></tr> <tr><td valign="top"></td><td valign="top"><em>opt</em> </td><td>options needed to set up RS232 communcation (see <a class="el" href="structusart__options__t.html">usart_options_t</a>) </td></tr> <tr><td valign="top"></td><td valign="top"><em>cpuHz</em> </td><td>frequency of the selected clock</td></tr> </table></dl><dl class="return" compact><dt><b>Returns:</b></dt><dd>status </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>USART_OK</em> </td><td>on success </td></tr> <tr><td valign="top"></td><td valign="top"><em>USART_ERROR_ARGUMENT</em> </td><td>on wrong arguments </td></tr> </table></dl><p>Definition at line <a class="el" href="testsuite_2bravo__validation_2pdc_2usart_8c-source.html#l00120">120</a> of file <a class="el" href="testsuite_2bravo__validation_2pdc_2usart_8c-source.html">usart.c</a>.<p>References <a class="el" href="testsuite_2bravo__validation_2pdc_2usart_8h-source.html#l00102">usart_options_t::baudrate</a>, <a class="el" href="testsuite_2bravo__validation_2pdc_2usart_8h-source.html#l00129">usart_options_t::channelmode</a>, <a class="el" href="testsuite_2bravo__validation_2pdc_2usart_8h-source.html#l00107">usart_options_t::charlength</a>, <a class="el" href="testsuite_2bravo__validation_2pdc_2usart_8h-source.html#l00114">usart_options_t::paritytype</a>, <a class="el" href="testsuite_2bravo__validation_2pdc_2usart_8h-source.html#l00122">usart_options_t::stopbits</a>, <a class="el" href="testsuite_2bravo__validation_2pdc_2usart_8h-source.html#l00033">USART_ERROR_ARGUMENT</a>, <a class="el" href="testsuite_2bravo__validation_2pdc_2usart_8h-source.html#l00028">USART_OK</a>, <a class="el" href="testsuite_2bravo__validation_2pdc_2usart_8c-source.html#l00027">usart_reset()</a>, and <a class="el" href="testsuite_2bravo__validation_2pdc_2usart_8c-source.html#l00065">usart_set_baudrate()</a>.<p>Referenced by <a class="el" href="pdc__example_8c-source.html#l00110">main()</a>.<div class="fragment"><pre class="fragment"><a name="l00123"></a>00123 {<a name="l00124"></a>00124 <span class="keywordtype">int</span> retval;<a name="l00125"></a>00125 <a name="l00126"></a>00126 <span class="comment">/* reset the usart and shutdown RX and TX */</span><a name="l00127"></a>00127 <a class="code" href="testsuite_2bravo__validation_2pdc_2usart_8c.html#31cf4d67fd204fb4684fff9d7994cb4c">usart_reset</a>(usart);<a name="l00128"></a>00128 <a name="l00129"></a>00129 <span class="comment">/* control input values */</span><a name="l00130"></a>00130 <span class="keywordflow">if</span>( opt == 0 ) {<a name="l00131"></a>00131 <span class="keywordflow">return</span> <a class="code" href="testsuite_2bravo__validation_2pdc_2usart_8h.html#d17dbdaf4e461f67e3b3f41da9e11af9">USART_ERROR_ARGUMENT</a>;<a name="l00132"></a>00132 }<a name="l00133"></a>00133 <span class="keywordflow">if</span>( opt-><a class="code" href="structusart__options__t.html#a6b77cc05829d2e70ee7f96194c6ce23">charlength</a> < 5 || opt-><a class="code" href="structusart__options__t.html#a6b77cc05829d2e70ee7f96194c6ce23">charlength</a> > 9 ) {<a name="l00134"></a>00134 <span class="keywordflow">return</span> <a class="code" href="testsuite_2bravo__validation_2pdc_2usart_8h.html#d17dbdaf4e461f67e3b3f41da9e11af9">USART_ERROR_ARGUMENT</a>;<a name="l00135"></a>00135 }<a name="l00136"></a>00136 <span class="keywordflow">if</span>( opt-><a class="code" href="structusart__options__t.html#85401f7a6f516a5883adc0538dc27f8e">paritytype</a> > 7 ) {<a name="l00137"></a>00137 <span class="keywordflow">return</span> <a class="code" href="testsuite_2bravo__validation_2pdc_2usart_8h.html#d17dbdaf4e461f67e3b3f41da9e11af9">USART_ERROR_ARGUMENT</a>;<a name="l00138"></a>00138 }<a name="l00139"></a>00139 <span class="keywordflow">if</span>( opt-><a class="code" href="structusart__options__t.html#433a6ede2186d42b4cf19ef4b370cd61">stopbits</a> > 2+255 ) {<a name="l00140"></a>00140 <span class="keywordflow">return</span> <a class="code" href="testsuite_2bravo__validation_2pdc_2usart_8h.html#d17dbdaf4e461f67e3b3f41da9e11af9">USART_ERROR_ARGUMENT</a>;<a name="l00141"></a>00141 }<a name="l00142"></a>00142 <span class="keywordflow">if</span>( opt-><a class="code" href="structusart__options__t.html#0dc365b8779891743180e9b69116f5ea">channelmode</a> > 3 ) {<a name="l00143"></a>00143 <span class="keywordflow">return</span> <a class="code" href="testsuite_2bravo__validation_2pdc_2usart_8h.html#d17dbdaf4e461f67e3b3f41da9e11af9">USART_ERROR_ARGUMENT</a>;<a name="l00144"></a>00144 }<a name="l00145"></a>00145 <a name="l00146"></a>00146 retval = <a class="code" href="testsuite_2bravo__validation_2pdc_2usart_8c.html#38c10272f6d0b8e873a213dd39d5d1cf">usart_set_baudrate</a>( usart, opt-><a class="code" href="structusart__options__t.html#276ad428776a25b8247762bd2c82b35b">baudrate</a>, cpuHz );<a name="l00147"></a>00147 <a name="l00148"></a>00148 <span class="keywordflow">if</span>( retval != <a class="code" href="testsuite_2bravo__validation_2pdc_2usart_8h.html#2067a9071b47751aad8456bddf70b913">USART_OK</a> ) {<a name="l00149"></a>00149 <span class="keywordflow">return</span> retval;<a name="l00150"></a>00150 }<a name="l00151"></a>00151 <a name="l00152"></a>00152 <span class="keywordflow">if</span>( opt-><a class="code" href="structusart__options__t.html#a6b77cc05829d2e70ee7f96194c6ce23">charlength</a> == 9 ) {<a name="l00153"></a>00153 <span class="comment">/* charlength set to 9 bits; MODE9 dominates CHRL */</span><a name="l00154"></a>00154 usart->mr |= (1<<AVR32_USART_MR_MODE9_OFFSET);<a name="l00155"></a>00155 } <span class="keywordflow">else</span> {<a name="l00156"></a>00156 <span class="comment">/* CHRL gives the charlength( - 5) when USART_MODE9=0 */</span><a name="l00157"></a>00157 usart->mr |=<a name="l00158"></a>00158 ((opt-><a class="code" href="structusart__options__t.html#a6b77cc05829d2e70ee7f96194c6ce23">charlength</a>-5) << AVR32_USART_MR_CHRL_OFFSET);<a name="l00159"></a>00159 }<a name="l00160"></a>00160 <a name="l00161"></a>00161 usart->mr |= (opt-><a class="code" href="structusart__options__t.html#0dc365b8779891743180e9b69116f5ea">channelmode</a> << AVR32_USART_MR_CHMODE_OFFSET) |<a name="l00162"></a>00162 (opt-><a class="code" href="structusart__options__t.html#85401f7a6f516a5883adc0538dc27f8e">paritytype</a> << AVR32_USART_MR_PAR_OFFSET);<a name="l00163"></a>00163 <a name="l00164"></a>00164 <span class="keywordflow">if</span>( opt-><a class="code" href="structusart__options__t.html#433a6ede2186d42b4cf19ef4b370cd61">stopbits</a> > 2 ) {<a name="l00165"></a>00165 <span class="comment">/* set two stop bits */</span><a name="l00166"></a>00166 usart->mr |= (2 << AVR32_USART_MR_NBSTOP_OFFSET);<a name="l00167"></a>00167 <span class="comment">/* and a timeguard period gives the rest */</span><a name="l00168"></a>00168 usart->ttgr = (opt-><a class="code" href="structusart__options__t.html#433a6ede2186d42b4cf19ef4b370cd61">stopbits</a>-2);<a name="l00169"></a>00169 } <span class="keywordflow">else</span> {<a name="l00170"></a>00170 <span class="comment">/* insert 1, 1.5 or 2 stop bits */</span><a name="l00171"></a>00171 usart->mr |= (opt-><a class="code" href="structusart__options__t.html#433a6ede2186d42b4cf19ef4b370cd61">stopbits</a> << AVR32_USART_MR_NBSTOP_OFFSET);<a name="l00172"></a>00172 }<a name="l00173"></a>00173 <a name="l00174"></a>00174 <span class="comment">/* enable TX and RX */</span><a name="l00175"></a>00175 usart->cr |= (1<<AVR32_USART_CR_TXEN_OFFSET) |<a name="l00176"></a>00176 (1<<AVR32_USART_CR_RXEN_OFFSET);<a name="l00177"></a>00177 <a name="l00178"></a>00178 <span class="keywordflow">return</span> <a class="code" href="testsuite_2bravo__validation_2pdc_2usart_8h.html#2067a9071b47751aad8456bddf70b913">USART_OK</a>;<a name="l00179"></a>00179 }</pre></div><p><p>Here is the call graph for this function:</div></div><p><a class="anchor" name="3474251489944fc88e8021a7c01128f6"></a><!-- doxytag: member="usart.h::usart_puthcar" ref="3474251489944fc88e8021a7c01128f6" args="(volatile avr32_usart_t *usart, int character)" --><div class="memitem"><div class="memproto"> <table class="memname"> <tr> <td class="memname">int usart_puthcar </td> <td>(</td> <td class="paramtype">volatile avr32_usart_t * </td> <td class="paramname"> <em>usart</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"> <em>character</em></td><td> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td><td width="100%"></td> </tr> </table></div><div class="memdoc"><p></div></div><p><a class="anchor" name="31cf4d67fd204fb4684fff9d7994cb4c"></a><!-- doxytag: member="usart.h::usart_reset" ref="31cf4d67fd204fb4684fff9d7994cb4c" args="(volatile avr32_usart_t *usart)" --><div class="memitem"><div class="memproto"> <table class="memname"> <tr> <td class="memname">void usart_reset </td> <td>(</td> <td class="paramtype">volatile avr32_usart_t * </td> <td class="paramname"> <em>usart</em> </td> <td> ) </td> <td width="100%"></td> </tr> </table></div><div class="memdoc"><p>This function will reset the USART, and disable TX and RX. <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>usart</em> </td><td>Base address of the usart </td></tr> </table></dl><p>Definition at line <a class="el" href="testsuite_2bravo__validation_2pdc_2usart_8c-source.html#l00027">27</a> of file <a class="el" href="testsuite_2bravo__validation_2pdc_2usart_8c-source.html">usart.c</a>.<div class="fragment"><pre class="fragment"><a name="l00028"></a>00028 {<a name="l00029"></a>00029 <span class="comment">/* Disable all usart interrupts, interrupts needed should be set</span><a name="l00030"></a>00030 <span class="comment"> explicitly on every reset */</span><a name="l00031"></a>00031 usart->idr = 0xFFFFffff;<a name="l00032"></a>00032 <a name="l00033"></a>00033 <span class="comment">/* Reset mode and other registers that could cause unpredictable</span><a name="l00034"></a>00034 <span class="comment"> behaviour after reset */</span><a name="l00035"></a>00035 usart->mr = 0;<a name="l00036"></a>00036 usart->rtor = 0;<a name="l00037"></a>00037 usart->ttgr = 0;<a name="l00038"></a>00038 <a name="l00039"></a>00039 <span class="comment">/* Shutdown RX and TX (will be reenabled when setup</span><a name="l00040"></a>00040 <span class="comment"> is completed successfully), reset status bits and turn</span><a name="l00041"></a>00041 <span class="comment"> off DTR and RTS */</span><a name="l00042"></a>00042 usart->cr = (1<<AVR32_USART_CR_RSTRX_OFFSET)|<a name="l00043"></a>00043 (1<<AVR32_USART_CR_RSTTX_OFFSET)|<a name="l00044"></a>00044 (1<<AVR32_USART_CR_RSTSTA_OFFSET)|<a name="l00045"></a>00045 (1<<AVR32_USART_CR_RSTIT_OFFSET)|<a name="l00046"></a>00046 (1<<AVR32_USART_CR_RSTNACK_OFFSET)|<a name="l00047"></a>00047 (1<<AVR32_USART_CR_DTRDIS_OFFSET)|<a name="l00048"></a>00048 (1<<AVR32_USART_CR_RTSDIS_OFFSET);<a name="l00049"></a>00049 }</pre></div><p></div></div><p><a class="anchor" name="2762980365c2aadfa3170a622c71b6cf"></a><!-- doxytag: member="usart.h::usart_writeLine" ref="2762980365c2aadfa3170a622c71b6cf" args="(volatile avr32_usart_t *usart, char *string)" --><div class="memitem"><div class="memproto"> <table class="memname"> <tr> <td class="memname">int usart_writeLine </td> <td>(</td> <td class="paramtype">volatile avr32_usart_t * </td> <td class="paramname"> <em>usart</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">char * </td> <td class="paramname"> <em>string</em></td><td> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td><td width="100%"></td> </tr> </table></div><div class="memdoc"><p>write one character string to the usart <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>usart</em> </td><td>base address of the usart </td></tr> <tr><td valign="top"></td><td valign="top"><em>string</em> </td><td>pointer to an array of chars</td></tr> </table></dl><dl class="return" compact><dt><b>Returns:</b></dt><dd>status </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>USART_OK</em> </td><td>on success </td></tr> <tr><td valign="top"></td><td valign="top"><em>USART_TX_BUSY</em> </td><td>on timeout </td></tr> </table></dl><p>Definition at line <a class="el" href="testsuite_2bravo__validation_2pdc_2usart_8c-source.html#l00218">218</a> of file <a class="el" href="testsuite_2bravo__validation_2pdc_2usart_8c-source.html">usart.c</a>.<p>References <a class="el" href="testsuite_2bravo__validation_2pdc_2usart_8h-source.html#l00028">USART_OK</a>, and <a class="el" href="testsuite_2bravo__validation_2pdc_2usart_8c-source.html#l00191">usart_putchar()</a>.<div class="fragment"><pre class="fragment"><a name="l00219"></a>00219 {<a name="l00220"></a>00220 <span class="keywordtype">int</span> retVal = <a class="code" href="testsuite_2bravo__validation_2pdc_2usart_8h.html#2067a9071b47751aad8456bddf70b913">USART_OK</a>;<a name="l00221"></a>00221 <a name="l00222"></a>00222 <span class="keywordflow">while</span>( *<a class="code" href="pdc__example_8c.html#ed1cfb225a5fb77461e7972691e68a72">string</a> != <span class="charliteral">'\0'</span> ) {<a name="l00223"></a>00223 retVal = <a class="code" href="testsuite_2bravo__validation_2pdc_2usart_8c.html#d8d5a1b7705f01b3ace3de0948930600">usart_putchar</a>( usart, *<a class="code" href="pdc__example_8c.html#ed1cfb225a5fb77461e7972691e68a72">string</a>++ );<a name="l00224"></a>00224 }<a name="l00225"></a>00225 <a name="l00226"></a>00226 <span class="keywordflow">if</span>( retVal != <a class="code" href="testsuite_2bravo__validation_2pdc_2usart_8h.html#2067a9071b47751aad8456bddf70b913">USART_OK</a> ) {<a name="l00227"></a>00227 <span class="keywordflow">return</span> retVal;<a name="l00228"></a>00228 }<a name="l00229"></a>00229 <a name="l00230"></a>00230 <span class="keywordflow">return</span> <a class="code" href="testsuite_2bravo__validation_2pdc_2usart_8h.html#2067a9071b47751aad8456bddf70b913">USART_OK</a>;<a name="l00231"></a>00231 }</pre></div><p><p>Here is the call graph for this function:</div></div><p><hr size="1"><address style="align: right;"><small>Generated on Thu May 10 14:14:48 2007 for AVR321000 Communication with the AVR32 USART by <a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.1 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