📄 testsuite_2bravo__validation_2pdc_2usart_8c-source.html
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<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 }<a name="l00180"></a>00180 <a name="l00181"></a>00181 <a name="l00191"></a><a class="code" href="testsuite_2bravo__validation_2usart_2usart_8h.html#2ff96c7ceba22b5663bee08da4633ed9">00191</a> <span class="keywordtype">int</span> <a class="code" href="testsuite_2bravo__validation_2pdc_2usart_8c.html#d8d5a1b7705f01b3ace3de0948930600">usart_putchar</a>( <span class="keyword">volatile</span> avr32_usart_t * usart, <span class="keywordtype">int</span> character )<a name="l00192"></a>00192 {<a name="l00193"></a>00193 <span class="keywordtype">int</span> timeout = <a class="code" href="testsuite_2bravo__validation_2pdc_2usart_8h.html#c8dc7a35914ec78bd7382630499bd856">USART_DEFAULT_TIMEOUT</a>;<a name="l00194"></a>00194 <a name="l00195"></a>00195 <span class="keywordflow">do</span> {<a name="l00196"></a>00196 --timeout;<a name="l00197"></a>00197 } <span class="keywordflow">while</span>( (usart->csr & (1<<AVR32_USART_CSR_TXRDY_OFFSET)) == 0 && timeout > 0 );<a name="l00198"></a>00198 <a name="l00199"></a>00199 <span class="keywordflow">if</span>( timeout == 0 ) {<a name="l00200"></a>00200 <span class="keywordflow">return</span> <a class="code" href="testsuite_2bravo__validation_2pdc_2usart_8h.html#481df5bfed5fec78ff5697b335ab5947">USART_TX_BUSY</a>;<a name="l00201"></a>00201 }<a name="l00202"></a>00202 <a name="l00203"></a>00203 usart->thr = character;<a name="l00204"></a>00204 <a name="l00205"></a>00205 <span class="keywordflow">return</span> <a class="code" href="testsuite_2bravo__validation_2pdc_2usart_8h.html#2067a9071b47751aad8456bddf70b913">USART_OK</a>;<a name="l00206"></a>00206 }<a name="l00207"></a>00207 <a name="l00208"></a>00208 <a name="l00218"></a><a class="code" href="testsuite_2bravo__validation_2pdc_2usart_8h.html#2762980365c2aadfa3170a622c71b6cf">00218</a> <span class="keywordtype">int</span> <a class="code" href="testsuite_2bravo__validation_2pdc_2usart_8c.html#2762980365c2aadfa3170a622c71b6cf">usart_writeLine</a>( <span class="keyword">volatile</span> avr32_usart_t * usart, <span class="keywordtype">char</span> * <a class="code" href="pdc__example_8c.html#ed1cfb225a5fb77461e7972691e68a72">string</a> )<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>( *string != <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, *string++ );<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 }<a name="l00232"></a>00232 </pre></div><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 </small></address></body></html>⌨️ 快捷键说明
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