main_8c.html

一个用GCC做的atmel芯片控制的无刷无传感器的程序.包括各种参考文档!

<a name="l00781"></a>00781     }
<a name="l00782"></a>00782   }
<a name="l00783"></a>00783 
<a name="l00784"></a>00784   <span class="keywordflow">if</span> (current &gt; <a class="code" href="BLDC_8h.html#a72">CURRENT_LIMITER_START</a>)
<a name="l00785"></a>00785   {
<a name="l00786"></a>00786     overCurrentCorrection = (current - <a class="code" href="BLDC_8h.html#a72">CURRENT_LIMITER_START</a>) * <a class="code" href="BLDC_8h.html#a75">CURRENT_LIMITER_FACTOR</a>;
<a name="l00787"></a>00787   }
<a name="l00788"></a>00788 
<a name="l00789"></a>00789   <span class="keywordflow">if</span> (overCurrentCorrection &gt; 255)
<a name="l00790"></a>00790   {
<a name="l00791"></a>00791     <span class="keywordflow">return</span> 255;
<a name="l00792"></a>00792   }
<a name="l00793"></a>00793 
<a name="l00794"></a>00794   <span class="keywordflow">return</span> overCurrentCorrection;
<a name="l00795"></a>00795 }
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<a class="anchor" name="a24"></a><!-- doxytag: member="main.c::CurrentMeasurementComplete" ref="a24" args="()" --><p>
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          <td class="md" nowrap valign="top">__interrupt void CurrentMeasurementComplete           </td>
          <td class="md" valign="top">(&nbsp;</td>
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<p>
Definition at line <a class="el" href="main_8c-source.html#l00544">544</a> of file <a class="el" href="main_8c-source.html">main.c</a>.
<p>
References <a class="el" href="BLDC_8h-source.html#l00207">CLEAR_ALL_TIMER0_INT_FLAGS</a>, <a class="el" href="main_8c-source.html#l00080">currentUpdated</a>, <a class="el" href="main_8c-source.html#l00071">shuntVoltageADC</a>, and <a class="el" href="BLDC_8h-source.html#l00039">TRUE</a>.<div class="fragment"><pre class="fragment"><a name="l00545"></a>00545 {
<a name="l00546"></a>00546   <a class="code" href="main_8c.html#a8">shuntVoltageADC</a> = ADCH;
<a name="l00547"></a>00547   <a class="code" href="main_8c.html#a11">currentUpdated</a> = <a class="code" href="BLDC_8h.html#a4">TRUE</a>;
<a name="l00548"></a>00548   <a class="code" href="BLDC_8h.html#a57">CLEAR_ALL_TIMER0_INT_FLAGS</a>;
<a name="l00549"></a>00549 }
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<a class="anchor" name="a23"></a><!-- doxytag: member="main.c::EnableZCDetection" ref="a23" args="()" --><p>
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          <td class="md" nowrap valign="top">__interrupt void EnableZCDetection           </td>
          <td class="md" valign="top">(&nbsp;</td>
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<p>
Enables zero-cross detection. 
<p>
This interrupt service routine is triggered when the zero cross detection hold-off time after commutation is over. All Timer/counter1 interrupts are disabled and Timer/counter0 (PWM) overflow interrupt is enabled to allow the ADC readings to be used for zero-cross detection.
<p>
Definition at line <a class="el" href="main_8c-source.html#l00507">507</a> of file <a class="el" href="main_8c-source.html">main.c</a>.
<p>
References <a class="el" href="main_8c-source.html#l00032">ADMUXTable</a>, <a class="el" href="BLDC_8h-source.html#l00207">CLEAR_ALL_TIMER0_INT_FLAGS</a>, <a class="el" href="BLDC_8h-source.html#l00216">CLEAR_ALL_TIMER1_INT_FLAGS</a>, <a class="el" href="BLDC_8h-source.html#l00219">DISABLE_ALL_TIMER1_INTS</a>, <a class="el" href="main_8c-source.html#l00029">driveTable</a>, <a class="el" href="main_8c-source.html#l00065">nextCommutationStep</a>, <a class="el" href="main_8c-source.html#l00050">nextDrivePattern</a>, and <a class="el" href="BLDC_8h-source.html#l00213">SET_TIMER0_INT_ZC_DETECTION</a>.<div class="fragment"><pre class="fragment"><a name="l00508"></a>00508 {
<a name="l00509"></a>00509   <span class="comment">// Enable TCNT0 overflow ISR.</span>
<a name="l00510"></a>00510   <a class="code" href="BLDC_8h.html#a57">CLEAR_ALL_TIMER0_INT_FLAGS</a>;
<a name="l00511"></a>00511   <a class="code" href="BLDC_8h.html#a60">CLEAR_ALL_TIMER1_INT_FLAGS</a>;
<a name="l00512"></a>00512   <a class="code" href="BLDC_8h.html#a59">SET_TIMER0_INT_ZC_DETECTION</a>;
<a name="l00513"></a>00513   <a class="code" href="BLDC_8h.html#a61">DISABLE_ALL_TIMER1_INTS</a>;
<a name="l00514"></a>00514 
<a name="l00515"></a>00515   <span class="comment">// Set up ADC for zero-cross detection</span>
<a name="l00516"></a>00516   ADMUX = <a class="code" href="main_8c.html#a1">ADMUXTable</a>[<a class="code" href="main_8c.html#a6">nextCommutationStep</a>];
<a name="l00517"></a>00517 
<a name="l00518"></a>00518   <span class="comment">// Wait for ADC to complete</span>
<a name="l00519"></a>00519   <span class="keywordflow">while</span> (!(ADCSRA &amp; (1 &lt;&lt; ADIF)))
<a name="l00520"></a>00520   {
<a name="l00521"></a>00521 
<a name="l00522"></a>00522   }
<a name="l00523"></a>00523   ADCSRA &amp;= ~(1 &lt;&lt; ADIE);
<a name="l00524"></a>00524   ADCSRA |= (1 &lt;&lt; ADSC) | (1 &lt;&lt; ADATE);
<a name="l00525"></a>00525 
<a name="l00526"></a>00526   <span class="comment">// Rotate commutation step counter.</span>
<a name="l00527"></a>00527   <a class="code" href="main_8c.html#a6">nextCommutationStep</a>++;
<a name="l00528"></a>00528   <span class="keywordflow">if</span> (<a class="code" href="main_8c.html#a6">nextCommutationStep</a> &gt;= 6)
<a name="l00529"></a>00529   {
<a name="l00530"></a>00530     <a class="code" href="main_8c.html#a6">nextCommutationStep</a> = 0;
<a name="l00531"></a>00531   }
<a name="l00532"></a>00532   <a class="code" href="main_8c.html#a4">nextDrivePattern</a> = <a class="code" href="main_8c.html#a0">driveTable</a>[<a class="code" href="main_8c.html#a6">nextCommutationStep</a>];
<a name="l00533"></a>00533 }
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<a class="anchor" name="a16"></a><!-- doxytag: member="main.c::InitADC" ref="a16" args="(void)" --><p>
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          <td class="md" nowrap valign="top">static void InitADC           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">void&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>          </td>
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<p>
Initializes the AD-converter. 
<p>
This function initializes the AD-converter and makes a reading of the external reference voltage.
<p>
Definition at line <a class="el" href="main_8c-source.html#l00211">211</a> of file <a class="el" href="main_8c-source.html">main.c</a>.
<p>
References <a class="el" href="BLDC_8h-source.html#l00174">ADC_PRESCALER_16</a>, <a class="el" href="BLDC_8h-source.html#l00171">ADC_PRESCALER_8</a>, <a class="el" href="BLDC_8h-source.html#l00180">ADC_TRIGGER_SOURCE</a>, <a class="el" href="BLDC_8h-source.html#l00168">ADMUX_REF_VOLTAGE</a>, and <a class="el" href="main_8c-source.html#l00074">referenceVoltageADC</a>.<div class="fragment"><pre class="fragment"><a name="l00212"></a>00212 {
<a name="l00213"></a>00213   <span class="comment">// First make a measurement of the external reference voltage.</span>
<a name="l00214"></a>00214   ADMUX = <a class="code" href="BLDC_8h.html#a46">ADMUX_REF_VOLTAGE</a>;
<a name="l00215"></a>00215   ADCSRA = (1 &lt;&lt; ADEN) | (1 &lt;&lt; ADSC) | (1 &lt;&lt; ADIF) | (<a class="code" href="BLDC_8h.html#a48">ADC_PRESCALER_16</a>);
<a name="l00216"></a>00216   <span class="keywordflow">while</span> (ADCSRA &amp; (1 &lt;&lt; ADSC))
<a name="l00217"></a>00217   {
<a name="l00218"></a>00218 
<a name="l00219"></a>00219   }
<a name="l00220"></a>00220   <a class="code" href="main_8c.html#a9">referenceVoltageADC</a> = ADCH;
<a name="l00221"></a>00221 
<a name="l00222"></a>00222   <span class="comment">// Initialize the ADC for autotriggered operation on PWM timer overflow.</span>
<a name="l00223"></a>00223   ADCSRA = (1 &lt;&lt; ADEN) | (0 &lt;&lt; ADSC) | (1 &lt;&lt; ADATE) | (1 &lt;&lt; ADIF) | (0 &lt;&lt; ADIE) | <a class="code" href="BLDC_8h.html#a47">ADC_PRESCALER_8</a>;
<a name="l00224"></a>00224   ADCSRB = <a class="code" href="BLDC_8h.html#a50">ADC_TRIGGER_SOURCE</a>;
<a name="l00225"></a>00225 }
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<a class="anchor" name="a17"></a><!-- doxytag: member="main.c::InitAnalogComparator" ref="a17" args="(void)" --><p>
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          <td class="md" nowrap valign="top">static void InitAnalogComparator           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">void&nbsp;</td>
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