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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
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<title>CanFestival: /home/epimerde/documents/tc11/CanFestival-3/src/timer.c File Reference</title>
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<link href="doxygen.css" rel="stylesheet" type="text/css">
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<link href="tabs.css" rel="stylesheet" type="text/css">
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</head><body>
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<!-- Generated by Doxygen 1.5.1 -->
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<div class="tabs">
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  <ul>
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    <li><a href="main.html"><span>Main&nbsp;Page</span></a></li>
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    <li id="current"><a href="files.html"><span>Files</span></a></li>
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  </ul></div>
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  <ul>
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    <li><a href="files.html"><span>File&nbsp;List</span></a></li>
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    <li><a href="globals.html"><span>Globals</span></a></li>
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  </ul></div>
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<h1>/home/epimerde/documents/tc11/CanFestival-3/src/timer.c File Reference</h1><code>#include &lt;applicfg.h&gt;</code><br>
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<code>#include &quot;timer.h&quot;</code><br>
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Include dependency graph for timer.c:<p><center><img src="timer_8c__incl.png" border="0" usemap="#/home/epimerde/documents/tc11/CanFestival-3/src/timer.c_map" alt=""></center>
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<a href="timer_8c-source.html">Go to the source code of this file.</a><table border="0" cellpadding="0" cellspacing="0">
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<tr><td></td></tr>
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<tr><td colspan="2"><br><h2>Defines</h2></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="timer_8c.html#8536312cebeeea3a23dc0027800122c9">min_val</a>(a, b)&nbsp;&nbsp;&nbsp;((a&lt;b)?a:b)</td></tr>
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<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">TIMER_HANDLE&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="timer_8c.html#11c2616d78f06ed9144ef662f757b128">SetAlarm</a> (CO_Data *d, UNS32 id, TimerCallback_t callback, TIMEVAL value, TIMEVAL period)</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">TIMER_HANDLE&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="timer_8c.html#991b3cfaac2f201b14d5530f75985c21">DelAlarm</a> (TIMER_HANDLE handle)</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="timer_8c.html#fa75192a3238525618f8cb83004930cc">TimeDispatch</a> ()</td></tr>
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<tr><td colspan="2"><br><h2>Variables</h2></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">s_timer_entry&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="timer_8c.html#a74e2cf2504bfd18b12f112c7aaad845">timers</a> [MAX_NB_TIMER] = {{TIMER_FREE, NULL, NULL, 0, 0, 0},}</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">TIMEVAL&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="timer_8c.html#5e9651eed13d70bcce9bdf3489a72a3d">total_sleep_time</a> = TIMEVAL_MAX</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">TIMER_HANDLE&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="timer_8c.html#1dab7b9a29bdee8b1931f8ea90685c6f">last_timer_raw</a> = -1</td></tr>
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</table>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
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<dl class="author" compact><dt><b>Author:</b></dt><dd>Edouard TISSERANT and Francis DUPIN </dd></dl>
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<dl class="date" compact><dt><b>Date:</b></dt><dd>Tue Jun 5 09:32:32 2007 </dd></dl>
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Definition in file <a class="el" href="timer_8c-source.html">timer.c</a>.<hr><h2>Define Documentation</h2>
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<a class="anchor" name="8536312cebeeea3a23dc0027800122c9"></a><!-- doxytag: member="timer.c::min_val" ref="8536312cebeeea3a23dc0027800122c9" args="(a, b)" -->
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<div class="memitem">
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      <table class="memname">
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          <td class="memname">#define min_val          </td>
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          <td>(</td>
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          <td class="paramtype">a,         <tr>
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          <td class="paramkey"></td>
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          <td></td>
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          <td class="paramtype">b&nbsp;</td>
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          <td class="paramname">          </td>
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          <td>&nbsp;)&nbsp;</td>
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          <td width="100%">&nbsp;&nbsp;&nbsp;((a&lt;b)?a:b)</td>
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        </tr>
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      </table>
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Definition at line <a class="el" href="timer_8c-source.html#l00044">44</a> of file <a class="el" href="timer_8c-source.html">timer.c</a>.
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Referenced by <a class="el" href="timer_8c-source.html#l00131">TimeDispatch()</a>.
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</div>
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<hr><h2>Function Documentation</h2>
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<a class="anchor" name="991b3cfaac2f201b14d5530f75985c21"></a><!-- doxytag: member="timer.c::DelAlarm" ref="991b3cfaac2f201b14d5530f75985c21" args="(TIMER_HANDLE handle)" -->
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          <td class="memname">TIMER_HANDLE DelAlarm           </td>
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          <td>(</td>
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          <td class="paramtype">TIMER_HANDLE&nbsp;</td>
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          <td class="paramname"> <em>handle</em>          </td>
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          <td>&nbsp;)&nbsp;</td>
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          <td width="100%"></td>
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        </tr>
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      </table>
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----- Use this to remove an alarm ----<p>
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<dl compact><dt><b>Parameters:</b></dt><dd>
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  <table border="0" cellspacing="2" cellpadding="0">
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    <tr><td valign="top"></td><td valign="top"><em>handle</em>&nbsp;</td><td></td></tr>
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  </table>
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</dl>
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<dl class="return" compact><dt><b>Returns:</b></dt><dd></dd></dl>
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Quick and dirty. system timer will continue to be trigged, but no action will be preformed. 
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Definition at line <a class="el" href="timer_8c-source.html#l00112">112</a> of file <a class="el" href="timer_8c-source.html">timer.c</a>.
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References <a class="el" href="timer_8c-source.html#l00042">last_timer_raw</a>, and <a class="el" href="timer_8c-source.html#l00039">timers</a>.
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Referenced by <a class="el" href="lifegrd_8c-source.html#l00236">heartbeatStop()</a>, <a class="el" href="lifegrd_8c-source.html#l00081">proceedNODE_GUARD()</a>, <a class="el" href="lifegrd_8c-source.html#l00161">ProducerHearbeatAlarm()</a>, and <a class="el" href="sync_8c-source.html#l00105">stopSYNC()</a>.
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</div>
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<a class="anchor" name="11c2616d78f06ed9144ef662f757b128"></a><!-- doxytag: member="timer.c::SetAlarm" ref="11c2616d78f06ed9144ef662f757b128" args="(CO_Data *d, UNS32 id, TimerCallback_t callback, TIMEVAL value, TIMEVAL period)" -->
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          <td class="memname">TIMER_HANDLE SetAlarm           </td>
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          <td>(</td>
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          <td class="paramtype">CO_Data *&nbsp;</td>
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          <td class="paramname"> <em>d</em>, </td>
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          <td class="paramkey"></td>
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          <td></td>
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          <td class="paramtype">UNS32&nbsp;</td>
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          <td class="paramname"> <em>id</em>, </td>
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        </tr>
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          <td class="paramkey"></td>
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          <td></td>
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          <td class="paramtype">TimerCallback_t&nbsp;</td>
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          <td class="paramname"> <em>callback</em>, </td>
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        </tr>
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          <td class="paramkey"></td>
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          <td></td>
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          <td class="paramtype">TIMEVAL&nbsp;</td>
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          <td class="paramname"> <em>value</em>, </td>
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        </tr>
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          <td class="paramkey"></td>
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          <td></td>
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          <td class="paramtype">TIMEVAL&nbsp;</td>
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          <td class="paramname"> <em>period</em></td><td>&nbsp;</td>
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          <td></td>
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          <td>)</td>
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          <td></td><td></td><td width="100%"></td>
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------- Use this to declare a new alarm ------<p>
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<dl compact><dt><b>Parameters:</b></dt><dd>
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  <table border="0" cellspacing="2" cellpadding="0">
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    <tr><td valign="top"></td><td valign="top"><em>d</em>&nbsp;</td><td></td></tr>
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    <tr><td valign="top"></td><td valign="top"><em>id</em>&nbsp;</td><td></td></tr>
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    <tr><td valign="top"></td><td valign="top"><em>callback</em>&nbsp;</td><td></td></tr>
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    <tr><td valign="top"></td><td valign="top"><em>value</em>&nbsp;</td><td></td></tr>
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    <tr><td valign="top"></td><td valign="top"><em>period</em>&nbsp;</td><td></td></tr>
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  </table>
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</dl>
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<dl class="return" compact><dt><b>Returns:</b></dt><dd></dd></dl>
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<p>
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in order to decide new timer setting we have to run over all timer rows<p>
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if something to store<p>
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and empty row<p>
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just store<p>
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if successfull<p>
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set next wakeup alarm if new entry is sooner than others, or if it is alone<p>
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printf("elapsed_time=%d real_timer_value=%d total_sleep_time=%d\n", elapsed_time, real_timer_value, total_sleep_time);<p>
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printf("SetAlarm() return %d\n", row_number); 
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<p>
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Definition at line <a class="el" href="timer_8c-source.html#l00057">57</a> of file <a class="el" href="timer_8c-source.html">timer.c</a>.
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<p>
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References <a class="el" href="timer_8c-source.html#l00042">last_timer_raw</a>, and <a class="el" href="timer_8c-source.html#l00039">timers</a>.
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<p>
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Referenced by <a class="el" href="lifegrd_8c-source.html#l00206">heartbeatInit()</a>, <a class="el" href="lifegrd_8c-source.html#l00081">proceedNODE_GUARD()</a>, and <a class="el" href="sync_8c-source.html#l00080">startSYNC()</a>.
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</div>
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</div><p>
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<a class="anchor" name="fa75192a3238525618f8cb83004930cc"></a><!-- doxytag: member="timer.c::TimeDispatch" ref="fa75192a3238525618f8cb83004930cc" args="()" -->
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      <table class="memname">
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        <tr>
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          <td class="memname">void TimeDispatch           </td>
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          <td>(</td>
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          <td class="paramname">          </td>
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          <td>&nbsp;)&nbsp;</td>
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          <td width="100%"></td>
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        </tr>
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      </table>
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</div>
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<p>
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------ TimeDispatch is called on each timer expiration ---- 
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<p>
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used to compute when should normaly occur next wakeup<p>
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First run : change timer state depending on time<p>
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Get time since timer signal<p>
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if row is active<p>
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to be trigged<p>
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if simply outdated<p>
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ask for trig<p>
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or period have expired<p>
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set val as interval, with overrun correction<p>
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Check if this new timer value is the soonest<p>
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Each armed timer value in decremented.<p>
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Check if this new timer value is the soonest<p>
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Remember how much time we should sleep.<p>
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Set timer to soonest occurence<p>
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Then trig them or not.<p>
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reset trig state (will be free if not periodic)<p>
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trig ! 
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<p>
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Definition at line <a class="el" href="timer_8c-source.html#l00131">131</a> of file <a class="el" href="timer_8c-source.html">timer.c</a>.
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<p>
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References <a class="el" href="timer_8c-source.html#l00042">last_timer_raw</a>, <a class="el" href="timer_8c-source.html#l00044">min_val</a>, <a class="el" href="timer_8c-source.html#l00039">timers</a>, and <a class="el" href="timer_8c-source.html#l00041">total_sleep_time</a>.
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</div>
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</div><p>
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<hr><h2>Variable Documentation</h2>
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<a class="anchor" name="1dab7b9a29bdee8b1931f8ea90685c6f"></a><!-- doxytag: member="timer.c::last_timer_raw" ref="1dab7b9a29bdee8b1931f8ea90685c6f" args="" -->
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      <table class="memname">
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          <td class="memname">TIMER_HANDLE <a class="el" href="timer_8c.html#1dab7b9a29bdee8b1931f8ea90685c6f">last_timer_raw</a> = -1          </td>
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        </tr>
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      </table>
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<p>
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<p>
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Definition at line <a class="el" href="timer_8c-source.html#l00042">42</a> of file <a class="el" href="timer_8c-source.html">timer.c</a>.
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<p>
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Referenced by <a class="el" href="timer_8c-source.html#l00112">DelAlarm()</a>, <a class="el" href="timer_8c-source.html#l00057">SetAlarm()</a>, and <a class="el" href="timer_8c-source.html#l00131">TimeDispatch()</a>.
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</div>
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<a class="anchor" name="a74e2cf2504bfd18b12f112c7aaad845"></a><!-- doxytag: member="timer.c::timers" ref="a74e2cf2504bfd18b12f112c7aaad845" args="[MAX_NB_TIMER]" -->
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          <td class="memname">s_timer_entry <a class="el" href="timer_8c.html#a74e2cf2504bfd18b12f112c7aaad845">timers</a>[MAX_NB_TIMER] = {{TIMER_FREE, NULL, NULL, 0, 0, 0},}          </td>
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        </tr>
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      </table>
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<p>
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<p>
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Definition at line <a class="el" href="timer_8c-source.html#l00039">39</a> of file <a class="el" href="timer_8c-source.html">timer.c</a>.
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<p>
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Referenced by <a class="el" href="timer_8c-source.html#l00112">DelAlarm()</a>, <a class="el" href="timer_8c-source.html#l00057">SetAlarm()</a>, and <a class="el" href="timer_8c-source.html#l00131">TimeDispatch()</a>.
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<a class="anchor" name="5e9651eed13d70bcce9bdf3489a72a3d"></a><!-- doxytag: member="timer.c::total_sleep_time" ref="5e9651eed13d70bcce9bdf3489a72a3d" args="" -->
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          <td class="memname">TIMEVAL <a class="el" href="timer_8c.html#5e9651eed13d70bcce9bdf3489a72a3d">total_sleep_time</a> = TIMEVAL_MAX          </td>
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<p>
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<p>
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Definition at line <a class="el" href="timer_8c-source.html#l00041">41</a> of file <a class="el" href="timer_8c-source.html">timer.c</a>.
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<p>
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Referenced by <a class="el" href="timer_8c-source.html#l00131">TimeDispatch()</a>.
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</div>
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<hr size="1"><address style="align: right;"><small>Generated on Tue Jun 5 18:32:11 2007 for CanFestival by&nbsp;
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<a href="http://www.doxygen.org/index.html">
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.1 </small></address>
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