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18 <h1>/home/epimerde/documents/tc11/CanFestival-3/src/timer.c</h1><a href="timer_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span> |
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19 <a name="l00002"></a>00002 <span class="comment">This file is part of CanFestival, a library implementing CanOpen Stack. </span> |
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20 <a name="l00003"></a>00003 <span class="comment"></span> |
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21 <a name="l00004"></a>00004 <span class="comment">Copyright (C): Edouard TISSERANT and Francis DUPIN</span> |
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22 <a name="l00005"></a>00005 <span class="comment"></span> |
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23 <a name="l00006"></a>00006 <span class="comment">See COPYING file for copyrights details.</span> |
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24 <a name="l00007"></a>00007 <span class="comment"></span> |
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25 <a name="l00008"></a>00008 <span class="comment">This library is free software; you can redistribute it and/or</span> |
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26 <a name="l00009"></a>00009 <span class="comment">modify it under the terms of the GNU Lesser General Public</span> |
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27 <a name="l00010"></a>00010 <span class="comment">License as published by the Free Software Foundation; either</span> |
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28 <a name="l00011"></a>00011 <span class="comment">version 2.1 of the License, or (at your option) any later version.</span> |
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29 <a name="l00012"></a>00012 <span class="comment"></span> |
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30 <a name="l00013"></a>00013 <span class="comment">This library is distributed in the hope that it will be useful,</span> |
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31 <a name="l00014"></a>00014 <span class="comment">but WITHOUT ANY WARRANTY; without even the implied warranty of</span> |
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32 <a name="l00015"></a>00015 <span class="comment">MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span> |
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33 <a name="l00016"></a>00016 <span class="comment">Lesser General Public License for more details.</span> |
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34 <a name="l00017"></a>00017 <span class="comment"></span> |
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35 <a name="l00018"></a>00018 <span class="comment">You should have received a copy of the GNU Lesser General Public</span> |
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36 <a name="l00019"></a>00019 <span class="comment">License along with this library; if not, write to the Free Software</span> |
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37 <a name="l00020"></a>00020 <span class="comment">Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span> |
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38 <a name="l00021"></a>00021 <span class="comment">*/</span> |
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39 <a name="l00022"></a>00022 |
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40 <a name="l00023"></a>00023 <span class="comment">/* #define DEBUG_WAR_CONSOLE_ON */</span> |
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41 <a name="l00024"></a>00024 <span class="comment">/* #define DEBUG_ERR_CONSOLE_ON */</span> |
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42 <a name="l00025"></a>00025 |
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43 <a name="l00026"></a>00026 <span class="preprocessor">#include <applicfg.h></span> |
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44 <a name="l00027"></a>00027 <span class="preprocessor">#include "timer.h"</span> |
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45 <a name="l00028"></a>00028 |
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46 <a name="l00029"></a>00029 <span class="comment">/* --------- The timer table --------- */</span> |
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47 <a name="l00030"></a><a class="code" href="timer_8c.html#a74e2cf2504bfd18b12f112c7aaad845">00030</a> s_timer_entry <a class="code" href="timer_8c.html#a74e2cf2504bfd18b12f112c7aaad845">timers</a>[MAX_NB_TIMER] = {{TIMER_FREE, NULL, NULL, 0, 0, 0},}; |
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48 <a name="l00031"></a>00031 |
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49 <a name="l00032"></a><a class="code" href="timer_8c.html#5e9651eed13d70bcce9bdf3489a72a3d">00032</a> TIMEVAL <a class="code" href="timer_8c.html#5e9651eed13d70bcce9bdf3489a72a3d">total_sleep_time</a> = TIMEVAL_MAX; |
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50 <a name="l00033"></a><a class="code" href="timer_8c.html#1dab7b9a29bdee8b1931f8ea90685c6f">00033</a> TIMER_HANDLE <a class="code" href="timer_8c.html#1dab7b9a29bdee8b1931f8ea90685c6f">last_timer_raw</a> = -1; |
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51 <a name="l00034"></a>00034 |
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52 <a name="l00035"></a><a class="code" href="timer_8c.html#8536312cebeeea3a23dc0027800122c9">00035</a> <span class="preprocessor">#define min_val(a,b) ((a<b)?a:b)</span> |
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53 <a name="l00036"></a>00036 <span class="preprocessor"></span> |
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54 <a name="l00037"></a>00037 <span class="comment">/* --------- Use this to declare a new alarm --------- */</span> |
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55 <a name="l00038"></a><a class="code" href="timer_8c.html#11c2616d78f06ed9144ef662f757b128">00038</a> TIMER_HANDLE <a class="code" href="timer_8c.html#11c2616d78f06ed9144ef662f757b128">SetAlarm</a>(CO_Data* d, UNS32 <span class="keywordtype">id</span>, TimerCallback_t callback, TIMEVAL value, TIMEVAL period) |
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56 <a name="l00039"></a>00039 { |
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57 <a name="l00040"></a>00040 <span class="comment">/*printf("SetAlarm(UNS32 id=%d, TimerCallback_t callback=%x, TIMEVAL value=%d, TIMEVAL period=%d)\n", id, callback, value, period); */</span> |
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58 <a name="l00041"></a>00041 TIMER_HANDLE i; |
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59 <a name="l00042"></a>00042 TIMER_HANDLE row_number = TIMER_NONE; |
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60 <a name="l00043"></a>00043 |
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61 <a name="l00044"></a>00044 <span class="comment">/* in order to decide new timer setting we have to run over all timer rows */</span> |
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62 <a name="l00045"></a>00045 <span class="keywordflow">for</span>(i=0; i <= <a class="code" href="timer_8c.html#1dab7b9a29bdee8b1931f8ea90685c6f">last_timer_raw</a> + 1 && i < MAX_NB_TIMER; i++) |
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63 <a name="l00046"></a>00046 { |
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64 <a name="l00047"></a>00047 s_timer_entry *row = (<a class="code" href="timer_8c.html#a74e2cf2504bfd18b12f112c7aaad845">timers</a>+i); |
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65 <a name="l00048"></a>00048 |
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66 <a name="l00049"></a>00049 <span class="keywordflow">if</span> (callback && <span class="comment">/* if something to store */</span> |
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67 <a name="l00050"></a>00050 row->state == TIMER_FREE) <span class="comment">/* and empty row */</span> |
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68 <a name="l00051"></a>00051 { <span class="comment">/* just store */</span> |
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69 <a name="l00052"></a>00052 row->callback = callback; |
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70 <a name="l00053"></a>00053 row->d = d; |
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71 <a name="l00054"></a>00054 row->id = <span class="keywordtype">id</span>; |
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72 <a name="l00055"></a>00055 row->val = value; |
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73 <a name="l00056"></a>00056 row->interval = period; |
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74 <a name="l00057"></a>00057 row->state = TIMER_ARMED; |
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75 <a name="l00058"></a>00058 row_number = i; |
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76 <a name="l00059"></a>00059 <span class="keywordflow">break</span>; |
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77 <a name="l00060"></a>00060 } |
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78 <a name="l00061"></a>00061 } |
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79 <a name="l00062"></a>00062 |
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80 <a name="l00063"></a>00063 <span class="keywordflow">if</span> (row_number != TIMER_NONE) <span class="comment">/* if successfull **/</span> |
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81 <a name="l00064"></a>00064 { |
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82 <a name="l00065"></a>00065 TIMEVAL real_timer_value; |
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83 <a name="l00066"></a>00066 TIMEVAL elapsed_time; |
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84 <a name="l00067"></a>00067 |
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85 <a name="l00068"></a>00068 <span class="keywordflow">if</span> (row_number == <a class="code" href="timer_8c.html#1dab7b9a29bdee8b1931f8ea90685c6f">last_timer_raw</a> + 1) <a class="code" href="timer_8c.html#1dab7b9a29bdee8b1931f8ea90685c6f">last_timer_raw</a>++; |
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86 <a name="l00069"></a>00069 |
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87 <a name="l00070"></a>00070 <span class="comment">/* set next wakeup alarm if new entry is sooner than others, or if it is alone */</span> |
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88 <a name="l00071"></a>00071 real_timer_value = <a class="code" href="timer_8c.html#8536312cebeeea3a23dc0027800122c9">min_val</a>(value, TIMEVAL_MAX); |
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89 <a name="l00072"></a>00072 elapsed_time = getElapsedTime(); |
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90 <a name="l00073"></a>00073 |
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91 <a name="l00074"></a>00074 <span class="comment">/*printf("elapsed_time=%d real_timer_value=%d total_sleep_time=%d\n", elapsed_time, real_timer_value, total_sleep_time); */</span> |
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92 <a name="l00075"></a>00075 <span class="keywordflow">if</span> (<a class="code" href="timer_8c.html#5e9651eed13d70bcce9bdf3489a72a3d">total_sleep_time</a> > elapsed_time && <a class="code" href="timer_8c.html#5e9651eed13d70bcce9bdf3489a72a3d">total_sleep_time</a> - elapsed_time > real_timer_value) |
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93 <a name="l00076"></a>00076 { |
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94 <a name="l00077"></a>00077 <a class="code" href="timer_8c.html#5e9651eed13d70bcce9bdf3489a72a3d">total_sleep_time</a> = elapsed_time + real_timer_value; |
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95 <a name="l00078"></a>00078 setTimer(real_timer_value); |
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96 <a name="l00079"></a>00079 } |
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97 <a name="l00080"></a>00080 <span class="comment">/*printf("SetAlarm() return %d\n", row_number); */</span> |
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98 <a name="l00081"></a>00081 <span class="keywordflow">return</span> row_number; |
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99 <a name="l00082"></a>00082 } |
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100 <a name="l00083"></a>00083 <span class="keywordflow">return</span> TIMER_NONE; |
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101 <a name="l00084"></a>00084 } |
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102 <a name="l00085"></a>00085 |
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103 <a name="l00086"></a>00086 <span class="comment">/* --------- Use this to remove an alarm --------- */</span> |
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104 <a name="l00087"></a><a class="code" href="timer_8c.html#991b3cfaac2f201b14d5530f75985c21">00087</a> TIMER_HANDLE <a class="code" href="timer_8c.html#991b3cfaac2f201b14d5530f75985c21">DelAlarm</a>(TIMER_HANDLE handle) |
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105 <a name="l00088"></a>00088 { |
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106 <a name="l00089"></a>00089 <span class="comment">/* Quick and dirty. system timer will continue to be trigged, but no action will be preformed. */</span> |
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107 <a name="l00090"></a>00090 MSG_WAR(0x3320, <span class="stringliteral">"DelAlarm. handle = "</span>, handle); |
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108 <a name="l00091"></a>00091 <span class="keywordflow">if</span>(handle != TIMER_NONE) |
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109 <a name="l00092"></a>00092 { |
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110 <a name="l00093"></a>00093 <span class="keywordflow">if</span>(handle == <a class="code" href="timer_8c.html#1dab7b9a29bdee8b1931f8ea90685c6f">last_timer_raw</a>) |
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111 <a name="l00094"></a>00094 <a class="code" href="timer_8c.html#1dab7b9a29bdee8b1931f8ea90685c6f">last_timer_raw</a>--; |
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112 <a name="l00095"></a>00095 <a class="code" href="timer_8c.html#a74e2cf2504bfd18b12f112c7aaad845">timers</a>[handle].state = TIMER_FREE; |
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113 <a name="l00096"></a>00096 } |
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114 <a name="l00097"></a>00097 <span class="keywordflow">else</span> { |
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115 <a name="l00098"></a>00098 } |
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116 <a name="l00099"></a>00099 <span class="keywordflow">return</span> TIMER_NONE; |
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117 <a name="l00100"></a>00100 } |
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118 <a name="l00101"></a>00101 |
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119 <a name="l00102"></a>00102 |
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120 <a name="l00103"></a>00103 <span class="comment">/* --------- TimeDispatch is called on each timer expiration --------- */</span> |
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121 <a name="l00104"></a><a class="code" href="timer_8c.html#fa75192a3238525618f8cb83004930cc">00104</a> <span class="keywordtype">void</span> <a class="code" href="timer_8c.html#fa75192a3238525618f8cb83004930cc">TimeDispatch</a>() |
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122 <a name="l00105"></a>00105 { |
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123 <a name="l00106"></a>00106 TIMER_HANDLE i; |
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124 <a name="l00107"></a>00107 TIMEVAL next_wakeup = TIMEVAL_MAX; <span class="comment">/* used to compute when should normaly occur next wakeup */</span> |
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125 <a name="l00108"></a>00108 <span class="comment">/* First run : change timer state depending on time */</span> |
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126 <a name="l00109"></a>00109 <span class="comment">/* Get time since timer signal */</span> |
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127 <a name="l00110"></a>00110 TIMEVAL overrun = getElapsedTime(); |
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128 <a name="l00111"></a>00111 |
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129 <a name="l00112"></a>00112 TIMEVAL real_total_sleep_time = <a class="code" href="timer_8c.html#5e9651eed13d70bcce9bdf3489a72a3d">total_sleep_time</a> + overrun; |
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130 <a name="l00113"></a>00113 <span class="comment">/*printf("total_sleep_time %d + overrun %d\n", total_sleep_time , overrun); */</span> |
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131 <a name="l00114"></a>00114 |
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132 <a name="l00115"></a>00115 <span class="keywordflow">for</span>(i=0; i <= <a class="code" href="timer_8c.html#1dab7b9a29bdee8b1931f8ea90685c6f">last_timer_raw</a>; i++) |
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133 <a name="l00116"></a>00116 { |
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134 <a name="l00117"></a>00117 s_timer_entry *row = (<a class="code" href="timer_8c.html#a74e2cf2504bfd18b12f112c7aaad845">timers</a>+i); |
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135 <a name="l00118"></a>00118 |
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136 <a name="l00119"></a>00119 <span class="keywordflow">if</span> (row->state & TIMER_ARMED) <span class="comment">/* if row is active */</span> |
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137 <a name="l00120"></a>00120 { |
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138 <a name="l00121"></a>00121 if (row->val <= real_total_sleep_time) <span class="comment">/* to be trigged */</span> |
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139 <a name="l00122"></a>00122 { |
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140 <a name="l00123"></a>00123 <span class="comment">/*printf("row->val(%d) <= (%d)real_total_sleep_time\n", row->val, real_total_sleep_time); */</span> |
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141 <a name="l00124"></a>00124 if (!row->interval) <span class="comment">/* if simply outdated */</span> |
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142 <a name="l00125"></a>00125 { |
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143 <a name="l00126"></a>00126 row->state = TIMER_TRIG; <span class="comment">/* ask for trig */</span> |
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144 <a name="l00127"></a>00127 } |
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145 <a name="l00128"></a>00128 <span class="keywordflow">else</span> <span class="comment">/* or period have expired */</span> |
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146 <a name="l00129"></a>00129 { |
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147 <a name="l00130"></a>00130 <span class="comment">/* set val as interval, with overrun correction */</span> |
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148 <a name="l00131"></a>00131 row->val = row->interval - (overrun % row->interval); |
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149 <a name="l00132"></a>00132 row->state = TIMER_TRIG_PERIOD; <span class="comment">/* ask for trig, periodic */</span> |
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150 <a name="l00133"></a>00133 <span class="comment">/* Check if this new timer value is the soonest */</span> |
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151 <a name="l00134"></a>00134 next_wakeup = <a class="code" href="timer_8c.html#8536312cebeeea3a23dc0027800122c9">min_val</a>(row->val,next_wakeup); |
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152 <a name="l00135"></a>00135 } |
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153 <a name="l00136"></a>00136 } |
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154 <a name="l00137"></a>00137 <span class="keywordflow">else</span> |
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155 <a name="l00138"></a>00138 { |
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156 <a name="l00139"></a>00139 <span class="comment">/* Each armed timer value in decremented. */</span> |
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157 <a name="l00140"></a>00140 row->val -= real_total_sleep_time; |
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158 <a name="l00141"></a>00141 |
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159 <a name="l00142"></a>00142 <span class="comment">/* Check if this new timer value is the soonest */</span> |
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160 <a name="l00143"></a>00143 next_wakeup = <a class="code" href="timer_8c.html#8536312cebeeea3a23dc0027800122c9">min_val</a>(row->val,next_wakeup); |
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161 <a name="l00144"></a>00144 } |
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162 <a name="l00145"></a>00145 } |
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163 <a name="l00146"></a>00146 } |
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164 <a name="l00147"></a>00147 |
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165 <a name="l00148"></a>00148 <span class="comment">/* Remember how much time we should sleep. */</span> |
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166 <a name="l00149"></a>00149 <a class="code" href="timer_8c.html#5e9651eed13d70bcce9bdf3489a72a3d">total_sleep_time</a> = next_wakeup; |
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167 <a name="l00150"></a>00150 |
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168 <a name="l00151"></a>00151 <span class="comment">/* Set timer to soonest occurence */</span> |
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169 <a name="l00152"></a>00152 setTimer(next_wakeup); |
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170 <a name="l00153"></a>00153 |
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171 <a name="l00154"></a>00154 <span class="comment">/* Then trig them or not. */</span> |
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172 <a name="l00155"></a>00155 <span class="keywordflow">for</span>(i=0; i<=<a class="code" href="timer_8c.html#1dab7b9a29bdee8b1931f8ea90685c6f">last_timer_raw</a>; i++) |
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173 <a name="l00156"></a>00156 { |
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174 <a name="l00157"></a>00157 s_timer_entry *row = (<a class="code" href="timer_8c.html#a74e2cf2504bfd18b12f112c7aaad845">timers</a>+i); |
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175 <a name="l00158"></a>00158 |
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176 <a name="l00159"></a>00159 <span class="keywordflow">if</span> (row->state & TIMER_TRIG) |
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177 <a name="l00160"></a>00160 { |
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178 <a name="l00161"></a>00161 row->state &= ~TIMER_TRIG; <span class="comment">/* reset trig state (will be free if not periodic) */</span> |
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179 <a name="l00162"></a>00162 <span class="keywordflow">if</span>(row->callback) |
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180 <a name="l00163"></a>00163 (*row->callback)(row->d, row->id); <span class="comment">/* trig ! */</span> |
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181 <a name="l00164"></a>00164 } |
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182 <a name="l00165"></a>00165 } |
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183 <a name="l00166"></a>00166 } |
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184 <a name="l00167"></a>00167 |
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185 </pre></div><hr size="1"><address style="align: right;"><small>Generated on Mon Jun 4 17:09:27 2007 for CanFestival by |
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186 <a href="http://www.doxygen.org/index.html"> |
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187 <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.1 </small></address> |
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188 </body> |
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189 </html> |