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一个用AVR单片机做的PID炉温控制器

Definition at line <a class="el" href="main_8c-source.html#l00090">90</a> of file <a class="el" href="main_8c-source.html">main.c</a>.
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Referenced by <a class="el" href="main_8c-source.html#l00117">main()</a>.<div class="fragment"><pre class="fragment"><a name="l00091"></a>00091 {
<a name="l00092"></a>00092   <span class="keywordflow">return</span> 8;
<a name="l00093"></a>00093 }
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<a class="anchor" name="7ce0a14b6e7779fbb2d9a05333792c41"></a><!-- doxytag: member="main.c::Init" ref="7ce0a14b6e7779fbb2d9a05333792c41" args="(void)" -->
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          <td class="memname">void Init           </td>
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Init of PID controller demo. 
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Definition at line <a class="el" href="main_8c-source.html#l00075">75</a> of file <a class="el" href="main_8c-source.html">main.c</a>.
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References <a class="el" href="main_8c-source.html#l00037">K_D</a>, <a class="el" href="main_8c-source.html#l00035">K_I</a>, <a class="el" href="main_8c-source.html#l00033">K_P</a>, <a class="el" href="pid_8c-source.html#l00035">pid_Init()</a>, <a class="el" href="main_8c-source.html#l00048">pidData</a>, and <a class="el" href="pid_8h-source.html#l00025">SCALING_FACTOR</a>.
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Referenced by <a class="el" href="main_8c-source.html#l00117">main()</a>.<div class="fragment"><pre class="fragment"><a name="l00076"></a>00076 {
<a name="l00077"></a>00077   <a class="code" href="pid_8c.html#29fe06205528f56bcfdd242e3d1f9c19" title="Initialisation of PID controller parameters.">pid_Init</a>(<a class="code" href="main_8c.html#cfc98b8c69707c30ac9a96bb12f2a0ab">K_P</a> * <a class="code" href="pid_8h.html#1dfc2df4edf95f828461ec28a276d36c">SCALING_FACTOR</a>, <a class="code" href="main_8c.html#5e606c8dc6de900bea3cd7740ac1bd4d">K_I</a> * SCALING_FACTOR , <a class="code" href="main_8c.html#0b9e481775b5a7ecdd0dbb43cacc1a09">K_D</a> * SCALING_FACTOR , &amp;<a class="code" href="main_8c.html#e95a1d87e515fada8578052871321ff9" title="Parameters for regulator.">pidData</a>);
<a name="l00078"></a>00078 
<a name="l00079"></a>00079   <span class="comment">// Set up timer, enable timer/counte 0 overflow interrupt</span>
<a name="l00080"></a>00080   TCCR0A = (1&lt;&lt;CS00);
<a name="l00081"></a>00081   TIMSK0 = (1&lt;&lt;TOIE0);
<a name="l00082"></a>00082   TCNT0 = 0;
<a name="l00083"></a>00083 }
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<a class="anchor" name="6288eba0f8e8ad3ab1544ad731eb7667"></a><!-- doxytag: member="main.c::main" ref="6288eba0f8e8ad3ab1544ad731eb7667" args="(void)" -->
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          <td class="memname">void main           </td>
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Demo of PID controller. 
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Definition at line <a class="el" href="main_8c-source.html#l00117">117</a> of file <a class="el" href="main_8c-source.html">main.c</a>.
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References <a class="el" href="pid_8h-source.html#l00058">FALSE</a>, <a class="el" href="main_8c-source.html#l00099">Get_Measurement()</a>, <a class="el" href="main_8c-source.html#l00090">Get_Reference()</a>, <a class="el" href="main_8c.html#37da6ea23a280bce8cc2ba16f6a31532">gFlags</a>, <a class="el" href="main_8c-source.html#l00075">Init()</a>, <a class="el" href="pid_8c-source.html#l00059">pid_Controller()</a>, <a class="el" href="main_8c-source.html#l00048">pidData</a>, <a class="el" href="main_8c-source.html#l00043">GLOBAL_FLAGS::pidTimer</a>, and <a class="el" href="main_8c-source.html#l00109">Set_Input()</a>.<div class="fragment"><pre class="fragment"><a name="l00118"></a>00118 {
<a name="l00119"></a>00119   <a class="code" href="stdint_8h.html#269259c924dce846340ddbb810db2e3c">int16_t</a> referenceValue, measurementValue, inputValue;
<a name="l00120"></a>00120   <a class="code" href="main_8c.html#7ce0a14b6e7779fbb2d9a05333792c41" title="Init of PID controller demo.">Init</a>();
<a name="l00121"></a>00121   __enable_interrupt();
<a name="l00122"></a>00122 
<a name="l00123"></a>00123   <span class="keywordflow">while</span>(1){
<a name="l00124"></a>00124 
<a name="l00125"></a>00125     <span class="comment">// Run PID calculations once every PID timer timeout</span>
<a name="l00126"></a>00126     <span class="keywordflow">if</span>(<a class="code" href="main_8c.html#37da6ea23a280bce8cc2ba16f6a31532" title="Flags for status information.">gFlags</a>.<a class="code" href="structGLOBAL__FLAGS.html#6a87af13be5ba5f4835749cc92528a09" title="True when PID control loop should run one time.">pidTimer</a>)
<a name="l00127"></a>00127     {
<a name="l00128"></a>00128       referenceValue = <a class="code" href="main_8c.html#5d425d60c4c5cc27b85f5d91f3089b24" title="Read reference value.">Get_Reference</a>();
<a name="l00129"></a>00129       measurementValue = <a class="code" href="main_8c.html#6c21c2fcef2ac5b7bd483e1ca38f14e0" title="Read system process value.">Get_Measurement</a>();
<a name="l00130"></a>00130 
<a name="l00131"></a>00131       inputValue = <a class="code" href="pid_8c.html#c0129c983e062dd6ee925ea932bae93f" title="PID control algorithm.">pid_Controller</a>(referenceValue, measurementValue, &amp;<a class="code" href="main_8c.html#e95a1d87e515fada8578052871321ff9" title="Parameters for regulator.">pidData</a>);
<a name="l00132"></a>00132 
<a name="l00133"></a>00133       <a class="code" href="main_8c.html#9890f9c197e2e87a8b187f2c4c821e7a" title="Set control input to system.">Set_Input</a>(inputValue);
<a name="l00134"></a>00134 
<a name="l00135"></a>00135       <a class="code" href="main_8c.html#37da6ea23a280bce8cc2ba16f6a31532" title="Flags for status information.">gFlags</a>.<a class="code" href="structGLOBAL__FLAGS.html#6a87af13be5ba5f4835749cc92528a09" title="True when PID control loop should run one time.">pidTimer</a> = <a class="code" href="pid_8h.html#a93f0eb578d23995850d61f7d61c55c1">FALSE</a>;
<a name="l00136"></a>00136     }
<a name="l00137"></a>00137   }
<a name="l00138"></a>00138 }
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<a class="anchor" name="9890f9c197e2e87a8b187f2c4c821e7a"></a><!-- doxytag: member="main.c::Set_Input" ref="9890f9c197e2e87a8b187f2c4c821e7a" args="(int16_t inputValue)" -->
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          <td class="memname">void Set_Input           </td>
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          <td class="paramtype"><a class="el" href="stdint_8h.html#269259c924dce846340ddbb810db2e3c">int16_t</a>&nbsp;</td>
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Set control input to system. 
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Set the output from the controller as input to system. 
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Definition at line <a class="el" href="main_8c-source.html#l00109">109</a> of file <a class="el" href="main_8c-source.html">main.c</a>.
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Referenced by <a class="el" href="main_8c-source.html#l00117">main()</a>.<div class="fragment"><pre class="fragment"><a name="l00110"></a>00110 {
<a name="l00111"></a>00111   ;
<a name="l00112"></a>00112 }
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<a class="anchor" name="8b6ed5249679f9ab632635809380a5e5"></a><!-- doxytag: member="main.c::TIMER0_OVF_ISR" ref="8b6ed5249679f9ab632635809380a5e5" args="(void)" -->
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          <td class="memname">__interrupt void TIMER0_OVF_ISR           </td>
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Timer interrupt to control the sampling interval. 
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Definition at line <a class="el" href="main_8c-source.html#l00062">62</a> of file <a class="el" href="main_8c-source.html">main.c</a>.
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References <a class="el" href="main_8c.html#37da6ea23a280bce8cc2ba16f6a31532">gFlags</a>, <a class="el" href="main_8c-source.html#l00043">GLOBAL_FLAGS::pidTimer</a>, <a class="el" href="main_8c-source.html#l00057">TIME_INTERVAL</a>, and <a class="el" href="pid_8h-source.html#l00059">TRUE</a>.<div class="fragment"><pre class="fragment"><a name="l00063"></a>00063 {
<a name="l00064"></a>00064   <span class="keyword">static</span> <a class="code" href="stdint_8h.html#273cf69d639a59973b6019625df33e30">uint16_t</a> i = 0;
<a name="l00065"></a>00065   <span class="keywordflow">if</span>(i &lt; <a class="code" href="main_8c.html#847b99b287f7c6555ab0f1cb4ed52119">TIME_INTERVAL</a>)
<a name="l00066"></a>00066     i++;
<a name="l00067"></a>00067   <span class="keywordflow">else</span>{
<a name="l00068"></a>00068     <a class="code" href="main_8c.html#37da6ea23a280bce8cc2ba16f6a31532" title="Flags for status information.">gFlags</a>.<a class="code" href="structGLOBAL__FLAGS.html#6a87af13be5ba5f4835749cc92528a09" title="True when PID control loop should run one time.">pidTimer</a> = <a class="code" href="pid_8h.html#a8cecfc5c5c054d2875c03e77b7be15d">TRUE</a>;
<a name="l00069"></a>00069     i = 0;
<a name="l00070"></a>00070   }
<a name="l00071"></a>00071 }
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<hr><h2>Variable Documentation</h2>
<a class="anchor" name="37da6ea23a280bce8cc2ba16f6a31532"></a><!-- doxytag: member="main.c::gFlags" ref="37da6ea23a280bce8cc2ba16f6a31532" args="" -->
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          <td class="memname">struct <a class="el" href="structGLOBAL__FLAGS.html">GLOBAL_FLAGS</a>  <a class="el" href="main_8c.html#37da6ea23a280bce8cc2ba16f6a31532">gFlags</a>          </td>
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Flags for status information. 
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Referenced by <a class="el" href="main_8c-source.html#l00117">main()</a>, and <a class="el" href="main_8c-source.html#l00062">TIMER0_OVF_ISR()</a>.
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<a class="anchor" name="e95a1d87e515fada8578052871321ff9"></a><!-- doxytag: member="main.c::pidData" ref="e95a1d87e515fada8578052871321ff9" args="" -->
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          <td class="memname">struct <a class="el" href="structPID__DATA.html">PID_DATA</a> <a class="el" href="main_8c.html#e95a1d87e515fada8578052871321ff9">pidData</a>          </td>
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Parameters for regulator. 
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Definition at line <a class="el" href="main_8c-source.html#l00048">48</a> of file <a class="el" href="main_8c-source.html">main.c</a>.
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Referenced by <a class="el" href="main_8c-source.html#l00075">Init()</a>, and <a class="el" href="main_8c-source.html#l00117">main()</a>.
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