doc/doxygen/html/timers__xeno_8c-source.html
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<title>CanFestival: drivers/timers_xeno/timers_xeno.c Source File</title>
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<a class="el" href="dir_d58fb241e647de6212c31ecccf9cbace.html">drivers</a>&nbsp;&raquo&nbsp;<a class="el" href="dir_4f1231793a9fb011f8f57698089b1a38.html">timers_xeno</a></div>
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<h1>timers_xeno.c</h1><a href="timers__xeno_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#include &lt;stdlib.h&gt;</span>
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<a name="l00002"></a>00002 <span class="preprocessor">#include &lt;unistd.h&gt;</span>
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<a name="l00003"></a>00003 <span class="preprocessor">#include &lt;sys/mman.h&gt;</span>
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<a name="l00004"></a>00004 
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<a name="l00005"></a>00005 <span class="preprocessor">#include &lt;native/task.h&gt;</span>
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<a name="l00006"></a>00006 <span class="preprocessor">#include &lt;native/timer.h&gt;</span>
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<a name="l00007"></a>00007 <span class="preprocessor">#include &lt;native/mutex.h&gt;</span>
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<a name="l00008"></a>00008 <span class="preprocessor">#include &lt;native/alarm.h&gt;</span>
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<a name="l00009"></a>00009 
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<a name="l00010"></a>00010 <span class="preprocessor">#include "<a class="code" href="win32_2applicfg_8h.html">applicfg.h</a>"</span>
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<a name="l00011"></a>00011 <span class="preprocessor">#include "<a class="code" href="can__driver_8h.html">can_driver.h</a>"</span>
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<a name="l00012"></a>00012 <span class="preprocessor">#include "<a class="code" href="timer_8h.html">timer.h</a>"</span>
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<a name="l00013"></a>00013 
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<a name="l00014"></a><a class="code" href="timers__xeno_8c.html#3e43352afeb0977d4e99f3590026c9ee">00014</a> <span class="preprocessor">#define TIMERLOOP_TASK_CREATED        1</span>
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<a name="l00015"></a>00015 <span class="preprocessor"></span>
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<a name="l00016"></a><a class="code" href="timers__xeno_8c.html#b6ebfe5bfc980bae026866758af3a7ff">00016</a> RT_MUTEX <a class="code" href="timers__unix_8c.html#93ad8a5a5e353192bfa45ae850df337f">CanFestival_mutex</a>;
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<a name="l00017"></a><a class="code" href="timers__xeno_8c.html#3921261b6599c37eb3830a799d05f32e">00017</a> RT_TASK <a class="code" href="timers__xeno_8c.html#3921261b6599c37eb3830a799d05f32e">timerloop_task</a>;
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<a name="l00018"></a><a class="code" href="timers__xeno_8c.html#b64940b870e06e40ac13634a9e2b9ac2">00018</a> RTIME <a class="code" href="timers__xeno_8c.html#b64940b870e06e40ac13634a9e2b9ac2">last_time_read</a>;
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<a name="l00019"></a><a class="code" href="timers__xeno_8c.html#faf0ed3ab58750ccf1a09c52f7304cc3">00019</a> RTIME <a class="code" href="timers__xeno_8c.html#faf0ed3ab58750ccf1a09c52f7304cc3">last_occured_alarm</a>;
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<a name="l00020"></a><a class="code" href="timers__xeno_8c.html#e2985cf19e9415625d21f0f79b580fd0">00020</a> RTIME <a class="code" href="timers__xeno_8c.html#e2985cf19e9415625d21f0f79b580fd0">last_alarm_set</a>;
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<a name="l00021"></a>00021 
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<a name="l00022"></a><a class="code" href="timers__xeno_8c.html#c006a038004f458645d9f7ef06c7bd04">00022</a> <span class="keywordtype">char</span> <a class="code" href="timers__xeno_8c.html#c006a038004f458645d9f7ef06c7bd04">stop_timer</a>=0;
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<a name="l00023"></a>00023 
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<a name="l00024"></a><a class="code" href="timers__xeno_8c.html#f37d89241d0a9ac0430a0db6c1ead3d2">00024</a> <span class="keywordtype">void</span> <a class="code" href="timers__xeno_8c.html#f37d89241d0a9ac0430a0db6c1ead3d2">cleanup_all</a>(<span class="keywordtype">void</span>)
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<a name="l00025"></a>00025 {
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<a name="l00026"></a>00026         rt_task_delete(&amp;<a class="code" href="timers__xeno_8c.html#3921261b6599c37eb3830a799d05f32e">timerloop_task</a>);
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<a name="l00027"></a>00027 }
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<a name="l00028"></a><a class="code" href="timers__xeno_8c.html#8758484f3cebb0cd44bb247c3f23d5e3">00028</a> <span class="keywordtype">void</span> <a class="code" href="timers__unix_8c.html#8758484f3cebb0cd44bb247c3f23d5e3">StopTimerLoop</a>(<span class="keywordtype">void</span>)
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<a name="l00029"></a>00029 {
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<a name="l00030"></a>00030         <a class="code" href="timers__xeno_8c.html#c006a038004f458645d9f7ef06c7bd04">stop_timer</a> = 1;
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<a name="l00031"></a>00031         rt_task_unblock(&amp;<a class="code" href="timers__xeno_8c.html#3921261b6599c37eb3830a799d05f32e">timerloop_task</a>);
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<a name="l00032"></a>00032 }
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<a name="l00033"></a>00033 
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<a name="l00034"></a>00034 
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<a name="l00035"></a><a class="code" href="timers__xeno_8c.html#d7fee43b8a44cf8b7036853593044037">00035</a> <span class="keywordtype">void</span> <a class="code" href="timers__unix_8c.html#d7fee43b8a44cf8b7036853593044037">EnterMutex</a>(<span class="keywordtype">void</span>)
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<a name="l00036"></a>00036 {
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<a name="l00037"></a>00037         rt_mutex_lock(&amp;<a class="code" href="timers__unix_8c.html#93ad8a5a5e353192bfa45ae850df337f">CanFestival_mutex</a>, TM_INFINITE); 
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<a name="l00038"></a>00038 }
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<a name="l00039"></a>00039 
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<a name="l00040"></a><a class="code" href="timers__xeno_8c.html#73d9a4eb941fb20cf6b597840510394b">00040</a> <span class="keywordtype">void</span> <a class="code" href="timers__unix_8c.html#73d9a4eb941fb20cf6b597840510394b">LeaveMutex</a>(<span class="keywordtype">void</span>)
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<a name="l00041"></a>00041 {
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<a name="l00042"></a>00042         rt_mutex_unlock(&amp;<a class="code" href="timers__unix_8c.html#93ad8a5a5e353192bfa45ae850df337f">CanFestival_mutex</a>);
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<a name="l00043"></a>00043 }
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<a name="l00044"></a>00044 
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<a name="l00045"></a><a class="code" href="timers__xeno_8c.html#15986eb72a64e72df6600dc23c1e19c8">00045</a> <span class="keywordtype">void</span> <a class="code" href="timers__xeno_8c.html#15986eb72a64e72df6600dc23c1e19c8">timerloop_task_proc</a>(<span class="keywordtype">void</span> *arg)
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<a name="l00046"></a>00046 {
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<a name="l00047"></a>00047         <span class="keywordtype">int</span> ret;
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<a name="l00048"></a>00048         <span class="keywordflow">do</span>{
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<a name="l00049"></a>00049                 <span class="keywordflow">do</span>{
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<a name="l00050"></a>00050                         <a class="code" href="timers__xeno_8c.html#faf0ed3ab58750ccf1a09c52f7304cc3">last_occured_alarm</a> = <a class="code" href="timers__xeno_8c.html#e2985cf19e9415625d21f0f79b580fd0">last_alarm_set</a>;
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<a name="l00051"></a>00051                         <a class="code" href="timers__unix_8c.html#d7fee43b8a44cf8b7036853593044037">EnterMutex</a>();
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<a name="l00052"></a>00052                         <a class="code" href="timer_8c.html#fa75192a3238525618f8cb83004930cc">TimeDispatch</a>();
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<a name="l00053"></a>00053                         <a class="code" href="timers__unix_8c.html#73d9a4eb941fb20cf6b597840510394b">LeaveMutex</a>();
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<a name="l00054"></a>00054                         <span class="keywordflow">while</span> ((ret = rt_task_sleep_until(<a class="code" href="timers__xeno_8c.html#e2985cf19e9415625d21f0f79b580fd0">last_alarm_set</a>)) == -EINTR);
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<a name="l00055"></a>00055                 }<span class="keywordflow">while</span> (ret == 0);
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<a name="l00056"></a>00056         }<span class="keywordflow">while</span> (!<a class="code" href="timers__xeno_8c.html#c006a038004f458645d9f7ef06c7bd04">stop_timer</a>);
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<a name="l00057"></a>00057         printf(<span class="stringliteral">"End of TimerLoop, code %d\n"</span>,ret);
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<a name="l00058"></a>00058 }
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<a name="l00059"></a>00059 
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<a name="l00060"></a><a class="code" href="timers__xeno_8c.html#c9e1731843825eb55e7a94894e6a8ec5">00060</a> <span class="keywordtype">void</span> <a class="code" href="timers__unix_8c.html#c9e1731843825eb55e7a94894e6a8ec5">StartTimerLoop</a>(<a class="code" href="timer_8h.html#f7d102e060339d3730ceae5fea03691b">TimerCallback_t</a> init_callback)
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<a name="l00061"></a>00061 {
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<a name="l00062"></a>00062         <span class="keywordtype">int</span> ret;
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<a name="l00063"></a>00063         <a class="code" href="timers__xeno_8c.html#c006a038004f458645d9f7ef06c7bd04">stop_timer</a> = 0;
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<a name="l00064"></a>00064         <span class="keywordtype">char</span> taskname[32];
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<a name="l00065"></a>00065         snprintf(taskname, <span class="keyword">sizeof</span>(taskname), <span class="stringliteral">"timerloop-%d"</span>, getpid());
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<a name="l00066"></a>00066 
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<a name="l00067"></a>00067         mlockall(MCL_CURRENT | MCL_FUTURE);
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<a name="l00068"></a>00068 
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<a name="l00069"></a>00069         <span class="comment">//create timerloop_task</span>
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<a name="l00070"></a>00070         ret = rt_task_create(&amp;<a class="code" href="timers__xeno_8c.html#3921261b6599c37eb3830a799d05f32e">timerloop_task</a>, taskname, 0, 50, 0);
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<a name="l00071"></a>00071         <span class="keywordflow">if</span> (ret) {
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<a name="l00072"></a>00072                 printf(<span class="stringliteral">"Failed to create timerloop_task, code %d\n"</span>,errno);
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<a name="l00073"></a>00073                 <span class="keywordflow">return</span>;
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<a name="l00074"></a>00074         }
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<a name="l00075"></a>00075         
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<a name="l00076"></a>00076         <a class="code" href="canOpenDriver_8c.html#24dbe63e88d184388542037d16a8208d">getElapsedTime</a>();
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<a name="l00077"></a>00077         <a class="code" href="timers__xeno_8c.html#e2985cf19e9415625d21f0f79b580fd0">last_alarm_set</a> = <a class="code" href="timers__xeno_8c.html#b64940b870e06e40ac13634a9e2b9ac2">last_time_read</a>;
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<a name="l00078"></a>00078         <a class="code" href="timers__xeno_8c.html#faf0ed3ab58750ccf1a09c52f7304cc3">last_occured_alarm</a> = <a class="code" href="timers__xeno_8c.html#e2985cf19e9415625d21f0f79b580fd0">last_alarm_set</a>;
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<a name="l00079"></a>00079         <a class="code" href="timer_8c.html#11c2616d78f06ed9144ef662f757b128">SetAlarm</a>(NULL, 0, init_callback, 0, 0);
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<a name="l00080"></a>00080         <span class="comment">// start timerloop_task</span>
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<a name="l00081"></a>00081         ret = rt_task_start(&amp;<a class="code" href="timers__xeno_8c.html#3921261b6599c37eb3830a799d05f32e">timerloop_task</a>,&amp;<a class="code" href="timers__xeno_8c.html#15986eb72a64e72df6600dc23c1e19c8">timerloop_task_proc</a>,NULL);
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<a name="l00082"></a>00082         <span class="keywordflow">if</span> (ret) {
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<a name="l00083"></a>00083                 printf(<span class="stringliteral">"Failed to start timerloop_task, code %d\n"</span>,errno);
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<a name="l00084"></a>00084                 <span class="keywordflow">goto</span> error;
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<a name="l00085"></a>00085         }
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<a name="l00086"></a>00086         
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<a name="l00087"></a>00087         <span class="keywordflow">return</span>;
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<a name="l00088"></a>00088         
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<a name="l00089"></a>00089 error:
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<a name="l00090"></a>00090         <a class="code" href="timers__xeno_8c.html#f37d89241d0a9ac0430a0db6c1ead3d2">cleanup_all</a>();
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<a name="l00091"></a>00091 }
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<a name="l00092"></a>00092 
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<a name="l00093"></a><a class="code" href="timers__xeno_8c.html#d009be934c04ee04b8e5a1cb5af08efd">00093</a> <span class="keywordtype">void</span> <a class="code" href="timers__unix_8c.html#a3a7df911baa20b01c4374a9677a154a">CreateReceiveTask</a>(<a class="code" href="unix_2applicfg_8h.html#7ef59f941603c6680e74fc335523f17e">CAN_PORT</a> fd0, <a class="code" href="timers__unix_2timerscfg_8h.html#07c1b78efc83716fac9e31b9862f7e60">TASK_HANDLE</a> *ReceiveLoop_task, <span class="keywordtype">void</span>* ReceiveLoop_task_proc)
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<a name="l00094"></a>00094 {
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<a name="l00095"></a>00095         <span class="keywordtype">int</span> ret;
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<a name="l00096"></a>00096         <span class="keyword">static</span> <span class="keywordtype">int</span> <span class="keywordtype">id</span> = 0;
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<a name="l00097"></a>00097         <span class="keywordtype">char</span> taskname[32];
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<a name="l00098"></a>00098         snprintf(taskname, <span class="keyword">sizeof</span>(taskname), <span class="stringliteral">"canloop%d-%d"</span>, <span class="keywordtype">id</span>, getpid());
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<a name="l00099"></a>00099         <span class="keywordtype">id</span>++;
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<a name="l00100"></a>00100 
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<a name="l00101"></a>00101         mlockall(MCL_CURRENT | MCL_FUTURE);
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<a name="l00102"></a>00102 
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<a name="l00103"></a>00103         <span class="comment">//create timerloop_task</span>
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<a name="l00104"></a>00104         ret = rt_task_create(ReceiveLoop_task,taskname,0,50,0);
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<a name="l00105"></a>00105         <span class="keywordflow">if</span> (ret) {
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<a name="l00106"></a>00106                 printf(<span class="stringliteral">"Failed to create ReceiveLoop_task number %d, code %d\n"</span>, <span class="keywordtype">id</span>, errno);
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<a name="l00107"></a>00107                 <span class="keywordflow">return</span>;
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<a name="l00108"></a>00108         }
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<a name="l00109"></a>00109         <span class="comment">// start timerloop_task</span>
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<a name="l00110"></a>00110         ret = rt_task_start(ReceiveLoop_task,ReceiveLoop_task_proc,(<span class="keywordtype">void</span>*)fd0);
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<a name="l00111"></a>00111         <span class="keywordflow">if</span> (ret) {
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<a name="l00112"></a>00112                 printf(<span class="stringliteral">"Failed to start ReceiveLoop_task number %d, code %d\n"</span>, <span class="keywordtype">id</span>, errno);
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<a name="l00113"></a>00113                 <span class="keywordflow">return</span>;
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<a name="l00114"></a>00114         }
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<a name="l00115"></a>00115 }
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<a name="l00116"></a>00116 
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<a name="l00117"></a><a class="code" href="timers__xeno_8c.html#aee2aa5ebcc60c3f2231f59c1c7beab0">00117</a> <span class="keywordtype">void</span> <a class="code" href="timers__unix_8c.html#4b2486891ee01e06e2deead4cf963727">WaitReceiveTaskEnd</a>(<a class="code" href="timers__unix_2timerscfg_8h.html#07c1b78efc83716fac9e31b9862f7e60">TASK_HANDLE</a> *Thread)
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<a name="l00118"></a>00118 {
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<a name="l00119"></a>00119         rt_task_delete(Thread);
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<a name="l00120"></a>00120 }
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<a name="l00121"></a>00121 
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<a name="l00122"></a><a class="code" href="timers__xeno_8c.html#b8d05dee70f04b5c5190ab00e84da106">00122</a> <span class="keywordtype">void</span> <a class="code" href="timers__unix_8c.html#b8d05dee70f04b5c5190ab00e84da106">setTimer</a>(<a class="code" href="hcs12_2applicfg_8h.html#6ae11f09e1ebf40f3562857272fab8bf">TIMEVAL</a> value)
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<a name="l00123"></a>00123 {
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<a name="l00124"></a>00124         <a class="code" href="timers__xeno_8c.html#e2985cf19e9415625d21f0f79b580fd0">last_alarm_set</a> = (value == <a class="code" href="hcs12_2applicfg_8h.html#35b2fd1a5f6b88bf3842ba3663e6f85e">TIMEVAL_MAX</a>) ? <a class="code" href="hcs12_2applicfg_8h.html#35b2fd1a5f6b88bf3842ba3663e6f85e">TIMEVAL_MAX</a> : <a class="code" href="timers__xeno_8c.html#b64940b870e06e40ac13634a9e2b9ac2">last_time_read</a> + value;
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<a name="l00125"></a>00125         rt_task_unblock(&amp;<a class="code" href="timers__xeno_8c.html#3921261b6599c37eb3830a799d05f32e">timerloop_task</a>);
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<a name="l00126"></a>00126 }
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<a name="l00127"></a>00127 
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<a name="l00128"></a><a class="code" href="timers__xeno_8c.html#4dccc204d52176bd547ab34d6858f5ba">00128</a> <a class="code" href="hcs12_2applicfg_8h.html#6ae11f09e1ebf40f3562857272fab8bf">TIMEVAL</a> <a class="code" href="canOpenDriver_8c.html#24dbe63e88d184388542037d16a8208d">getElapsedTime</a>(<span class="keywordtype">void</span>)
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<a name="l00129"></a>00129 {
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<a name="l00130"></a>00130         <a class="code" href="timers__xeno_8c.html#b64940b870e06e40ac13634a9e2b9ac2">last_time_read</a> = rt_timer_ticks2ns(rt_timer_read());
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<a name="l00131"></a>00131         <span class="keywordflow">return</span> <a class="code" href="timers__xeno_8c.html#b64940b870e06e40ac13634a9e2b9ac2">last_time_read</a> - <a class="code" href="timers__xeno_8c.html#faf0ed3ab58750ccf1a09c52f7304cc3">last_occured_alarm</a>;
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<a name="l00132"></a>00132 }
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</pre></div><hr size="1"><address style="align: right;"><small>Generated on Fri Jun 8 08:51:38 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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</body>
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</html>