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avr32100.zip Embedded demo

<a name="l00116"></a>00116         <span class="keywordflow">else</span>
<a name="l00117"></a>00117                 <span class="keywordflow">return</span> <a class="code" href="pm_8h.html#fb0c09824dd7de95fd1557e20c731400">PM_INVALID_ARGUMENT</a>;
<a name="l00118"></a>00118 
<a name="l00119"></a>00119         <span class="keywordflow">return</span> (mul*osc)/div;
<a name="l00120"></a>00120 }
<a name="l00121"></a>00121 
<a name="l00122"></a>00122 
<a name="l00123"></a>00123 <span class="comment">/*Read a specific oscillator value*/</span>
<a name="l00124"></a><a class="code" href="pm_8h.html#ec52b76e10f4f99b5acb6cf2d8be6cba">00124</a> <span class="keywordtype">int</span> <a class="code" href="pm_8c.html#ec52b76e10f4f99b5acb6cf2d8be6cba">pm_read_osc</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> osc )
<a name="l00125"></a>00125 {
<a name="l00126"></a>00126         <span class="keywordflow">if</span>(osc == 0)
<a name="l00127"></a>00127                 <span class="keywordflow">return</span> <a class="code" href="pm_8h.html#c6d5b458dd5c2308f7e6cdfb96519aa4">PM_OSC0_HZ</a>;
<a name="l00128"></a>00128         <span class="keywordflow">else</span> <span class="keywordflow">if</span>(osc == 1)
<a name="l00129"></a>00129                 <span class="keywordflow">return</span> <a class="code" href="pm_8h.html#6e188d537a626965bfe9b442a9e384ce">PM_OSC1_HZ</a>;
<a name="l00130"></a>00130         <span class="keywordflow">else</span>
<a name="l00131"></a>00131                 <span class="keywordflow">return</span> <a class="code" href="pm_8h.html#fb0c09824dd7de95fd1557e20c731400">PM_INVALID_ARGUMENT</a>;
<a name="l00132"></a>00132 }
<a name="l00133"></a>00133 
<a name="l00134"></a>00134 <span class="comment">/* Set the source for the main clock */</span>
<a name="l00135"></a><a class="code" href="pm_8h.html#5ee9297ef8a710f6f1c7b3f60d6f7369">00135</a> <span class="keywordtype">int</span> <a class="code" href="pm_8c.html#5ee9297ef8a710f6f1c7b3f60d6f7369">pm_set_mclk_source</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> source)
<a name="l00136"></a>00136 {
<a name="l00137"></a>00137         <span class="keyword">volatile</span> avr32_sm_t *sm = (<span class="keywordtype">void</span> *) AVR32_SM_ADDRESS;
<a name="l00138"></a>00138 
<a name="l00139"></a>00139         <span class="keywordflow">if</span>( (source == <a class="code" href="pm_8h.html#b6ed62883d39ae18a209e0a3dbfbeb40">PM_OSC0</a>) ){
<a name="l00140"></a>00140                 sm-&gt;pm_mcctrl = (0 &lt;&lt; AVR32_SM_PLLSEL_OFFSET);
<a name="l00141"></a>00141         }
<a name="l00142"></a>00142         <span class="keywordflow">else</span> <span class="keywordflow">if</span>( source ==<a class="code" href="pm_8h.html#b496d79f3a521e4335d24be892bf085a">PM_PLL0</a> ){
<a name="l00143"></a>00143                 sm-&gt;pm_mcctrl = (1 &lt;&lt; AVR32_SM_PLLSEL_OFFSET);
<a name="l00144"></a>00144         }
<a name="l00145"></a>00145         <span class="keywordflow">else</span>
<a name="l00146"></a>00146                 <span class="keywordflow">return</span> <a class="code" href="pm_8h.html#fb0c09824dd7de95fd1557e20c731400">PM_INVALID_ARGUMENT</a>;
<a name="l00147"></a>00147 
<a name="l00148"></a>00148         <span class="keywordflow">return</span> <a class="code" href="pm_8c.html#88dfe542f765ac33d0eeee7d0eff486c">pm_wait_for_lock</a>(AVR32_SM_PM_ISR_CKRDY);
<a name="l00149"></a>00149 
<a name="l00150"></a>00150 }
<a name="l00151"></a>00151 
<a name="l00152"></a>00152 
<a name="l00153"></a>00153 
<a name="l00154"></a>00154 <span class="comment">/* Read the main clock src */</span>
<a name="l00155"></a><a class="code" href="pm_8h.html#e8ea9de644b71bb92ab7d384f298d1d7">00155</a> <span class="keywordtype">int</span> <a class="code" href="pm_8c.html#e8ea9de644b71bb92ab7d384f298d1d7">pm_read_mclk_source</a>( <span class="keywordtype">void</span> )
<a name="l00156"></a>00156 {
<a name="l00157"></a>00157         <span class="keywordtype">int</span> source;
<a name="l00158"></a>00158         avr32_sm_t *sm = (<span class="keywordtype">void</span> *) AVR32_SM_ADDRESS;
<a name="l00159"></a>00159 
<a name="l00160"></a>00160         source = (sm-&gt;pm_mcctrl)&amp;AVR32_SM_PLLSEL_MASK;
<a name="l00161"></a>00161 
<a name="l00162"></a>00162         <span class="keywordflow">if</span>(source==0)
<a name="l00163"></a>00163                 <span class="keywordflow">return</span> <a class="code" href="pm_8h.html#b6ed62883d39ae18a209e0a3dbfbeb40">PM_OSC0</a>;
<a name="l00164"></a>00164         <span class="keywordflow">else</span> <span class="keywordflow">if</span>(source==AVR32_SM_PLLSEL_MASK)
<a name="l00165"></a>00165                 <span class="keywordflow">return</span> <a class="code" href="pm_8h.html#b496d79f3a521e4335d24be892bf085a">PM_PLL0</a>;
<a name="l00166"></a>00166         <span class="keywordflow">else</span>
<a name="l00167"></a>00167                 <span class="keywordflow">return</span> <a class="code" href="pm_8h.html#fb0c09824dd7de95fd1557e20c731400">PM_INVALID_ARGUMENT</a>;
<a name="l00168"></a>00168 }
<a name="l00169"></a>00169 
<a name="l00170"></a>00170 
<a name="l00171"></a>00171 
<a name="l00172"></a>00172 <span class="comment">/* Read the main clock frequency*/</span>
<a name="l00173"></a><a class="code" href="pm_8h.html#14bd8bcf2023d7eef7fa2575fe369900">00173</a> <span class="keywordtype">int</span> <a class="code" href="pm_8c.html#14bd8bcf2023d7eef7fa2575fe369900">pm_read_mclk</a>( <span class="keywordtype">void</span> )
<a name="l00174"></a>00174 {
<a name="l00175"></a>00175         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> f_hz, source;
<a name="l00176"></a>00176 
<a name="l00177"></a>00177         <span class="comment">/* Get mclk clock source */</span>
<a name="l00178"></a>00178         source = <a class="code" href="pm_8c.html#e8ea9de644b71bb92ab7d384f298d1d7">pm_read_mclk_source</a>();
<a name="l00179"></a>00179 
<a name="l00180"></a>00180         <span class="comment">/* check wheter oscillator 0 is used */</span>
<a name="l00181"></a>00181         <span class="keywordflow">if</span>( source == <a class="code" href="pm_8h.html#b6ed62883d39ae18a209e0a3dbfbeb40">PM_OSC0</a> )
<a name="l00182"></a>00182                 f_hz = <a class="code" href="pm_8h.html#c6d5b458dd5c2308f7e6cdfb96519aa4">PM_OSC0_HZ</a>;
<a name="l00183"></a>00183         <span class="comment">/* check wheter pll 0 is used */</span>
<a name="l00184"></a>00184         <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( source == <a class="code" href="pm_8h.html#b496d79f3a521e4335d24be892bf085a">PM_PLL0</a> )
<a name="l00185"></a>00185                 f_hz = <a class="code" href="pm_8c.html#54166687179ae6231608317171b8d62e">pm_read_pll_frequency</a>(<a class="code" href="pm_8h.html#b496d79f3a521e4335d24be892bf085a">PM_PLL0</a>);
<a name="l00186"></a>00186         <span class="keywordflow">else</span>
<a name="l00187"></a>00187                 <span class="keywordflow">return</span> <a class="code" href="pm_8h.html#fb0c09824dd7de95fd1557e20c731400">PM_INVALID_ARGUMENT</a>;
<a name="l00188"></a>00188 
<a name="l00189"></a>00189         <span class="keywordflow">return</span> f_hz;
<a name="l00190"></a>00190 } <span class="comment">/* End pm_read_mclk() */</span>
<a name="l00191"></a>00191 
<a name="l00192"></a>00192 
<a name="l00193"></a>00193 
<a name="l00194"></a>00194 <span class="comment">/* Get the clock frequency for the given clock domain */</span>
<a name="l00195"></a><a class="code" href="pm_8h.html#0f2a943733b661e4eaf234349224886c">00195</a> <span class="keywordtype">int</span> <a class="code" href="pm_8c.html#0f2a943733b661e4eaf234349224886c">pm_read_clock_domain_scaler</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> clock_domain)
<a name="l00196"></a>00196 {
<a name="l00197"></a>00197         <span class="keyword">static</span> avr32_sm_t *sm = (<span class="keywordtype">void</span> *) AVR32_SM_ADDRESS;
<a name="l00198"></a>00198         <span class="keywordtype">int</span> divider, offset;
<a name="l00199"></a>00199 
<a name="l00200"></a>00200         <span class="comment">/* Get offset for divider */</span>
<a name="l00201"></a>00201         <span class="keywordflow">if</span>(clock_domain == <a class="code" href="pm_8h.html#8581f5aa9839b0f01556facfd429a105">PM_APBB_DOMAIN</a>)
<a name="l00202"></a>00202                 offset = AVR32_SM_PM_CKSEL_APBBSEL_OFFSET;
<a name="l00203"></a>00203         <span class="keywordflow">else</span> <span class="keywordflow">if</span>(clock_domain == <a class="code" href="pm_8h.html#1d81d3d60bfe377c184d6f2920459e0b">PM_APBA_DOMAIN</a>)
<a name="l00204"></a>00204                 offset = AVR32_SM_PM_CKSEL_APBASEL_OFFSET;
<a name="l00205"></a>00205         <span class="keywordflow">else</span> <span class="keywordflow">if</span>(clock_domain == <a class="code" href="pm_8h.html#37e9895746ca50f3d86ad22f910e744c">PM_AHB_DOMAIN</a>)
<a name="l00206"></a>00206                 offset = AVR32_SM_PM_CKSEL_AHBSEL_OFFSET;
<a name="l00207"></a>00207         <span class="keywordflow">else</span> <span class="keywordflow">if</span>(clock_domain == <a class="code" href="pm_8h.html#660a07fbf3323532394666f5b39bda94">PM_CPU_DOMAIN</a>)
<a name="l00208"></a>00208                 offset = AVR32_SM_PM_CKSEL_CPUSEL_OFFSET;
<a name="l00209"></a>00209         <span class="keywordflow">else</span>
<a name="l00210"></a>00210                 <span class="keywordflow">return</span> <a class="code" href="pm_8h.html#fb0c09824dd7de95fd1557e20c731400">PM_INVALID_ARGUMENT</a>;
<a name="l00211"></a>00211 
<a name="l00212"></a>00212 
<a name="l00213"></a>00213         divider = sm-&gt;pm_cksel &amp; (AVR32_SM_PM_CKSEL_CPUSEL_MASK&lt;&lt;offset);
<a name="l00214"></a>00214         divider = divider &gt;&gt; offset;
<a name="l00215"></a>00215 
<a name="l00216"></a>00216         <span class="keywordflow">return</span> (divider+1);
<a name="l00217"></a>00217 
<a name="l00218"></a>00218 } <span class="comment">/* End pm_read_clock_domain_scaler() */</span>
<a name="l00219"></a>00219 
<a name="l00220"></a>00220 
<a name="l00221"></a>00221 
<a name="l00222"></a>00222 <span class="comment">/* Select clocks for different domains of the system */</span>
<a name="l00223"></a><a class="code" href="pm_8h.html#c98e7a8b718e6eba0c220fbedfc4ce9e">00223</a> <span class="keywordtype">int</span> <a class="code" href="pm_8c.html#c98e7a8b718e6eba0c220fbedfc4ce9e">pm_set_clock_domain_scaler</a>(<span class="keyword">volatile</span> <span class="keyword">struct</span> <a class="code" href="structclk__sel__opt__t.html">clk_sel_opt_t</a> *opt)
<a name="l00224"></a>00224 {
<a name="l00225"></a>00225         <span class="keyword">volatile</span> avr32_sm_t *sm = (<span class="keywordtype">void</span> *) AVR32_SM_ADDRESS;
<a name="l00226"></a>00226         <span class="keywordtype">int</span> offset,new_settings;
<a name="l00227"></a>00227 
<a name="l00228"></a>00228         <span class="comment">// Check for invalid division factor</span>
<a name="l00229"></a>00229         <span class="keywordflow">if</span>( (opt-&gt;div_enable == 1) &amp; ((opt-&gt;divider == 0)|(opt-&gt;divider &gt;= (1&lt;&lt;AVR32_SM_PM_CKSEL_CPUSEL_SIZE))) )
<a name="l00230"></a>00230                 <span class="keywordflow">return</span> <a class="code" href="pm_8h.html#fb0c09824dd7de95fd1557e20c731400">PM_INVALID_ARGUMENT</a>;
<a name="l00231"></a>00231 
<a name="l00232"></a>00232         <span class="comment">// Get offset for bitfields</span>
<a name="l00233"></a>00233         <span class="keywordflow">switch</span> (opt-&gt;clock){
<a name="l00234"></a>00234                 <span class="keywordflow">case</span> <a class="code" href="pm_8h.html#8581f5aa9839b0f01556facfd429a105">PM_APBB_DOMAIN</a>:
<a name="l00235"></a>00235                         offset = AVR32_SM_PM_CKSEL_APBBSEL_OFFSET;
<a name="l00236"></a>00236                         <span class="keywordflow">break</span>;
<a name="l00237"></a>00237                 <span class="keywordflow">case</span> <a class="code" href="pm_8h.html#1d81d3d60bfe377c184d6f2920459e0b">PM_APBA_DOMAIN</a>:
<a name="l00238"></a>00238                         offset = AVR32_SM_PM_CKSEL_APBASEL_OFFSET;
<a name="l00239"></a>00239                         <span class="keywordflow">break</span>;
<a name="l00240"></a>00240                 <span class="keywordflow">case</span> <a class="code" href="pm_8h.html#37e9895746ca50f3d86ad22f910e744c">PM_AHB_DOMAIN</a>:
<a name="l00241"></a>00241                         offset = AVR32_SM_PM_CKSEL_AHBSEL_OFFSET;
<a name="l00242"></a>00242                         <span class="keywordflow">break</span>;
<a name="l00243"></a>00243                 <span class="keywordflow">case</span> <a class="code" href="pm_8h.html#660a07fbf3323532394666f5b39bda94">PM_CPU_DOMAIN</a>:
<a name="l00244"></a>00244                         offset = AVR32_SM_PM_CKSEL_CPUSEL_OFFSET;
<a name="l00245"></a>00245                         <span class="keywordflow">break</span>;
<a name="l00246"></a>00246                 <span class="keywordflow">default</span>:
<a name="l00247"></a>00247                         <span class="keywordflow">return</span> <a class="code" href="pm_8h.html#fb0c09824dd7de95fd1557e20c731400">PM_INVALID_ARGUMENT</a>;
<a name="l00248"></a>00248                         <span class="keywordflow">break</span>;
<a name="l00249"></a>00249         } <span class="comment">/* end switch */</span>
<a name="l00250"></a>00250 
<a name="l00251"></a>00251         <span class="comment">// Check whether division should be disabled</span>
<a name="l00252"></a>00252         <span class="keywordflow">if</span>(opt-&gt;div_enable == 0){