1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> |
|
2 <html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"> |
|
3 <title>CanFestival: src/timer.c Source File</title> |
|
4 <link href="doxygen.css" rel="stylesheet" type="text/css"> |
|
5 <link href="tabs.css" rel="stylesheet" type="text/css"> |
|
6 </head><body> |
|
7 <!-- Generated by Doxygen 1.5.1 --> |
|
8 <div class="tabs"> |
|
9 <ul> |
|
10 <li><a href="main.html"><span>Main Page</span></a></li> |
|
11 <li><a href="annotated.html"><span>Data Structures</span></a></li> |
|
12 <li id="current"><a href="files.html"><span>Files</span></a></li> |
|
13 <li><a href="dirs.html"><span>Directories</span></a></li> |
|
14 </ul></div> |
|
15 <div class="tabs"> |
|
16 <ul> |
|
17 <li><a href="files.html"><span>File List</span></a></li> |
|
18 <li><a href="globals.html"><span>Globals</span></a></li> |
|
19 </ul></div> |
|
20 <div class="nav"> |
|
21 <a class="el" href="dir_0aa10e4f705947227e11e7ccb081fbe4.html">src</a></div> |
|
22 <h1>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> |
|
23 <a name="l00002"></a>00002 <span class="comment">This file is part of CanFestival, a library implementing CanOpen Stack. </span> |
|
24 <a name="l00003"></a>00003 <span class="comment"></span> |
|
25 <a name="l00004"></a>00004 <span class="comment">Copyright (C): Edouard TISSERANT and Francis DUPIN</span> |
|
26 <a name="l00005"></a>00005 <span class="comment"></span> |
|
27 <a name="l00006"></a>00006 <span class="comment">See COPYING file for copyrights details.</span> |
|
28 <a name="l00007"></a>00007 <span class="comment"></span> |
|
29 <a name="l00008"></a>00008 <span class="comment">This library is free software; you can redistribute it and/or</span> |
|
30 <a name="l00009"></a>00009 <span class="comment">modify it under the terms of the GNU Lesser General Public</span> |
|
31 <a name="l00010"></a>00010 <span class="comment">License as published by the Free Software Foundation; either</span> |
|
32 <a name="l00011"></a>00011 <span class="comment">version 2.1 of the License, or (at your option) any later version.</span> |
|
33 <a name="l00012"></a>00012 <span class="comment"></span> |
|
34 <a name="l00013"></a>00013 <span class="comment">This library is distributed in the hope that it will be useful,</span> |
|
35 <a name="l00014"></a>00014 <span class="comment">but WITHOUT ANY WARRANTY; without even the implied warranty of</span> |
|
36 <a name="l00015"></a>00015 <span class="comment">MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span> |
|
37 <a name="l00016"></a>00016 <span class="comment">Lesser General Public License for more details.</span> |
|
38 <a name="l00017"></a>00017 <span class="comment"></span> |
|
39 <a name="l00018"></a>00018 <span class="comment">You should have received a copy of the GNU Lesser General Public</span> |
|
40 <a name="l00019"></a>00019 <span class="comment">License along with this library; if not, write to the Free Software</span> |
|
41 <a name="l00020"></a>00020 <span class="comment">Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span> |
|
42 <a name="l00021"></a>00021 <span class="comment">*/</span> |
|
43 <a name="l00032"></a>00032 <span class="comment">/* #define DEBUG_WAR_CONSOLE_ON */</span> |
|
44 <a name="l00033"></a>00033 <span class="comment">/* #define DEBUG_ERR_CONSOLE_ON */</span> |
|
45 <a name="l00034"></a>00034 |
|
46 <a name="l00035"></a>00035 <span class="preprocessor">#include <<a class="code" href="win32_2applicfg_8h.html">applicfg.h</a>></span> |
|
47 <a name="l00036"></a>00036 <span class="preprocessor">#include "<a class="code" href="timer_8h.html">timer.h</a>"</span> |
|
48 <a name="l00037"></a>00037 |
|
49 <a name="l00038"></a>00038 <span class="comment">/* --------- The timer table --------- */</span> |
|
50 <a name="l00039"></a><a class="code" href="timer_8c.html#adb4c8d5876b377463d33bdeda56b575">00039</a> <a class="code" href="structstruct__s__timer__entry.html">s_timer_entry</a> <a class="code" href="timer_8c.html#adb4c8d5876b377463d33bdeda56b575">timers</a>[<a class="code" href="config_8h.html#893c52ed173989613d09770db8b9f294">MAX_NB_TIMER</a>] = {{TIMER_FREE, NULL, NULL, 0, 0, 0},}; |
|
51 <a name="l00040"></a>00040 |
|
52 <a name="l00041"></a><a class="code" href="timer_8c.html#242986a224c5a02d6341dd5bfdf71008">00041</a> <a class="code" href="hcs12_2applicfg_8h.html#dea5fb459bddd6fd539cdf665dd657e6">TIMEVAL</a> <a class="code" href="timer_8c.html#242986a224c5a02d6341dd5bfdf71008">total_sleep_time</a> = <a class="code" href="hcs12_2applicfg_8h.html#9b8b68779cc690a9f699155420328d0f">TIMEVAL_MAX</a>; |
|
53 <a name="l00042"></a><a class="code" href="timer_8c.html#4afd63ff2f23fe7cd60f0d82e78c4426">00042</a> <a class="code" href="timer_8h.html#92d252e2b6f4cf50c0e7450c20d5db48">TIMER_HANDLE</a> <a class="code" href="timer_8c.html#4afd63ff2f23fe7cd60f0d82e78c4426">last_timer_raw</a> = -1; |
|
54 <a name="l00043"></a>00043 |
|
55 <a name="l00044"></a><a class="code" href="timer_8c.html#d2d95744d6e355721e7bbc2c07d934a4">00044</a> <span class="preprocessor">#define min_val(a,b) ((a<b)?a:b)</span> |
|
56 <a name="l00045"></a>00045 <span class="preprocessor"></span> |
|
57 <a name="l00057"></a><a class="code" href="timer_8h.html#956b22f24089db4c367f40199f838a20">00057</a> <a class="code" href="timer_8h.html#92d252e2b6f4cf50c0e7450c20d5db48">TIMER_HANDLE</a> <a class="code" href="timer_8c.html#956b22f24089db4c367f40199f838a20">SetAlarm</a>(<a class="code" href="structstruct__CO__Data.html">CO_Data</a>* <a class="code" href="structstruct__s__timer__entry.html#1f47508e63fb89e692b98e178a78268f">d</a>, <a class="code" href="hcs12_2applicfg_8h.html#a6a1b7af83d4106c1d1621bdb28d9c48">UNS32</a> <span class="keywordtype">id</span>, <a class="code" href="timer_8h.html#c8436e7543fa1329b00e570246071313">TimerCallback_t</a> <a class="code" href="structstruct__s__timer__entry.html#692e4f379d9b3976895df243e12ccacb">callback</a>, <a class="code" href="hcs12_2applicfg_8h.html#dea5fb459bddd6fd539cdf665dd657e6">TIMEVAL</a> value, <a class="code" href="hcs12_2applicfg_8h.html#dea5fb459bddd6fd539cdf665dd657e6">TIMEVAL</a> period) |
|
58 <a name="l00058"></a>00058 { |
|
59 <a name="l00059"></a>00059 <span class="comment">/*printf("SetAlarm(UNS32 id=%d, TimerCallback_t callback=%x, TIMEVAL value=%d, TIMEVAL period=%d)\n", id, callback, value, period); */</span> |
|
60 <a name="l00060"></a>00060 <a class="code" href="timer_8h.html#92d252e2b6f4cf50c0e7450c20d5db48">TIMER_HANDLE</a> i; |
|
61 <a name="l00061"></a>00061 <a class="code" href="timer_8h.html#92d252e2b6f4cf50c0e7450c20d5db48">TIMER_HANDLE</a> row_number = TIMER_NONE; |
|
62 <a name="l00062"></a>00062 |
|
63 <a name="l00063"></a>00063 <span class="comment">/* in order to decide new timer setting we have to run over all timer rows */</span> |
|
64 <a name="l00064"></a>00064 <span class="keywordflow">for</span>(i=0; i <= <a class="code" href="timer_8c.html#4afd63ff2f23fe7cd60f0d82e78c4426">last_timer_raw</a> + 1 && i < <a class="code" href="config_8h.html#893c52ed173989613d09770db8b9f294">MAX_NB_TIMER</a>; i++) |
|
65 <a name="l00065"></a>00065 { |
|
66 <a name="l00066"></a>00066 <a class="code" href="structstruct__s__timer__entry.html">s_timer_entry</a> *row = (<a class="code" href="timer_8c.html#adb4c8d5876b377463d33bdeda56b575">timers</a>+i); |
|
67 <a name="l00067"></a>00067 |
|
68 <a name="l00068"></a>00068 <span class="keywordflow">if</span> (callback && <span class="comment">/* if something to store */</span> |
|
69 <a name="l00069"></a>00069 row->state == TIMER_FREE) <span class="comment">/* and empty row */</span> |
|
70 <a name="l00070"></a>00070 { <span class="comment">/* just store */</span> |
|
71 <a name="l00071"></a>00071 row->callback = callback; |
|
72 <a name="l00072"></a>00072 row->d = <a class="code" href="structstruct__s__timer__entry.html#1f47508e63fb89e692b98e178a78268f">d</a>; |
|
73 <a name="l00073"></a>00073 row->id = <span class="keywordtype">id</span>; |
|
74 <a name="l00074"></a>00074 row->val = value; |
|
75 <a name="l00075"></a>00075 row->interval = period; |
|
76 <a name="l00076"></a>00076 row->state = TIMER_ARMED; |
|
77 <a name="l00077"></a>00077 row_number = i; |
|
78 <a name="l00078"></a>00078 <span class="keywordflow">break</span>; |
|
79 <a name="l00079"></a>00079 } |
|
80 <a name="l00080"></a>00080 } |
|
81 <a name="l00081"></a>00081 |
|
82 <a name="l00082"></a>00082 <span class="keywordflow">if</span> (row_number != TIMER_NONE) <span class="comment">/* if successfull **/</span> |
|
83 <a name="l00083"></a>00083 { |
|
84 <a name="l00084"></a>00084 <a class="code" href="hcs12_2applicfg_8h.html#dea5fb459bddd6fd539cdf665dd657e6">TIMEVAL</a> real_timer_value; |
|
85 <a name="l00085"></a>00085 <a class="code" href="hcs12_2applicfg_8h.html#dea5fb459bddd6fd539cdf665dd657e6">TIMEVAL</a> elapsed_time; |
|
86 <a name="l00086"></a>00086 |
|
87 <a name="l00087"></a>00087 <span class="keywordflow">if</span> (row_number == <a class="code" href="timer_8c.html#4afd63ff2f23fe7cd60f0d82e78c4426">last_timer_raw</a> + 1) <a class="code" href="timer_8c.html#4afd63ff2f23fe7cd60f0d82e78c4426">last_timer_raw</a>++; |
|
88 <a name="l00088"></a>00088 |
|
89 <a name="l00089"></a>00089 <span class="comment">/* set next wakeup alarm if new entry is sooner than others, or if it is alone */</span> |
|
90 <a name="l00090"></a>00090 real_timer_value = <a class="code" href="timer_8c.html#d2d95744d6e355721e7bbc2c07d934a4">min_val</a>(value, <a class="code" href="hcs12_2applicfg_8h.html#9b8b68779cc690a9f699155420328d0f">TIMEVAL_MAX</a>); |
|
91 <a name="l00091"></a>00091 elapsed_time = <a class="code" href="canOpenDriver_8c.html#38b23a8ee3748bca3415967b90df1e15">getElapsedTime</a>(); |
|
92 <a name="l00092"></a>00092 |
|
93 <a name="l00093"></a>00093 <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> |
|
94 <a name="l00094"></a>00094 <span class="keywordflow">if</span> (<a class="code" href="timer_8c.html#242986a224c5a02d6341dd5bfdf71008">total_sleep_time</a> > elapsed_time && <a class="code" href="timer_8c.html#242986a224c5a02d6341dd5bfdf71008">total_sleep_time</a> - elapsed_time > real_timer_value) |
|
95 <a name="l00095"></a>00095 { |
|
96 <a name="l00096"></a>00096 <a class="code" href="timer_8c.html#242986a224c5a02d6341dd5bfdf71008">total_sleep_time</a> = elapsed_time + real_timer_value; |
|
97 <a name="l00097"></a>00097 <a class="code" href="timers__unix_8c.html#7996006c628d2df030b9684d7a86acd1">setTimer</a>(real_timer_value); |
|
98 <a name="l00098"></a>00098 } |
|
99 <a name="l00099"></a>00099 <span class="comment">/*printf("SetAlarm() return %d\n", row_number); */</span> |
|
100 <a name="l00100"></a>00100 <span class="keywordflow">return</span> row_number; |
|
101 <a name="l00101"></a>00101 } |
|
102 <a name="l00102"></a>00102 <span class="keywordflow">return</span> TIMER_NONE; |
|
103 <a name="l00103"></a>00103 } |
|
104 <a name="l00104"></a>00104 |
|
105 <a name="l00112"></a><a class="code" href="timer_8h.html#12fe6467e1df03cc40dd6f76123c99f6">00112</a> <a class="code" href="timer_8h.html#92d252e2b6f4cf50c0e7450c20d5db48">TIMER_HANDLE</a> <a class="code" href="timer_8c.html#12fe6467e1df03cc40dd6f76123c99f6">DelAlarm</a>(<a class="code" href="timer_8h.html#92d252e2b6f4cf50c0e7450c20d5db48">TIMER_HANDLE</a> handle) |
|
106 <a name="l00113"></a>00113 { |
|
107 <a name="l00114"></a>00114 <span class="comment">/* Quick and dirty. system timer will continue to be trigged, but no action will be preformed. */</span> |
|
108 <a name="l00115"></a>00115 <a class="code" href="hcs12_2applicfg_8h.html#d5dffc889e623fbc4f635e69276cdf20">MSG_WAR</a>(0x3320, <span class="stringliteral">"DelAlarm. handle = "</span>, handle); |
|
109 <a name="l00116"></a>00116 <span class="keywordflow">if</span>(handle != TIMER_NONE) |
|
110 <a name="l00117"></a>00117 { |
|
111 <a name="l00118"></a>00118 <span class="keywordflow">if</span>(handle == <a class="code" href="timer_8c.html#4afd63ff2f23fe7cd60f0d82e78c4426">last_timer_raw</a>) |
|
112 <a name="l00119"></a>00119 <a class="code" href="timer_8c.html#4afd63ff2f23fe7cd60f0d82e78c4426">last_timer_raw</a>--; |
|
113 <a name="l00120"></a>00120 <a class="code" href="timer_8c.html#adb4c8d5876b377463d33bdeda56b575">timers</a>[handle].<a class="code" href="structstruct__s__timer__entry.html#48f463cd0804517aeb60b27979143c56">state</a> = TIMER_FREE; |
|
114 <a name="l00121"></a>00121 } |
|
115 <a name="l00122"></a>00122 <span class="keywordflow">else</span> { |
|
116 <a name="l00123"></a>00123 } |
|
117 <a name="l00124"></a>00124 <span class="keywordflow">return</span> TIMER_NONE; |
|
118 <a name="l00125"></a>00125 } |
|
119 <a name="l00126"></a>00126 |
|
120 <a name="l00131"></a><a class="code" href="timer_8h.html#cfbb167cb53b81998c9a6f5af0c93c13">00131</a> <span class="keywordtype">void</span> <a class="code" href="timer_8c.html#7a5a515821c2e4fb2f66bac72389da00">TimeDispatch</a>() |
|
121 <a name="l00132"></a>00132 { |
|
122 <a name="l00133"></a>00133 <a class="code" href="timer_8h.html#92d252e2b6f4cf50c0e7450c20d5db48">TIMER_HANDLE</a> i; |
|
123 <a name="l00134"></a>00134 <a class="code" href="hcs12_2applicfg_8h.html#dea5fb459bddd6fd539cdf665dd657e6">TIMEVAL</a> next_wakeup = <a class="code" href="hcs12_2applicfg_8h.html#9b8b68779cc690a9f699155420328d0f">TIMEVAL_MAX</a>; <span class="comment">/* used to compute when should normaly occur next wakeup */</span> |
|
124 <a name="l00135"></a>00135 <span class="comment">/* First run : change timer state depending on time */</span> |
|
125 <a name="l00136"></a>00136 <span class="comment">/* Get time since timer signal */</span> |
|
126 <a name="l00137"></a>00137 <a class="code" href="hcs12_2applicfg_8h.html#dea5fb459bddd6fd539cdf665dd657e6">TIMEVAL</a> overrun = <a class="code" href="canOpenDriver_8c.html#38b23a8ee3748bca3415967b90df1e15">getElapsedTime</a>(); |
|
127 <a name="l00138"></a>00138 |
|
128 <a name="l00139"></a>00139 <a class="code" href="hcs12_2applicfg_8h.html#dea5fb459bddd6fd539cdf665dd657e6">TIMEVAL</a> real_total_sleep_time = <a class="code" href="timer_8c.html#242986a224c5a02d6341dd5bfdf71008">total_sleep_time</a> + overrun; |
|
129 <a name="l00140"></a>00140 <span class="comment">/*printf("total_sleep_time %d + overrun %d\n", total_sleep_time , overrun); */</span> |
|
130 <a name="l00141"></a>00141 |
|
131 <a name="l00142"></a>00142 <span class="keywordflow">for</span>(i=0; i <= <a class="code" href="timer_8c.html#4afd63ff2f23fe7cd60f0d82e78c4426">last_timer_raw</a>; i++) |
|
132 <a name="l00143"></a>00143 { |
|
133 <a name="l00144"></a>00144 <a class="code" href="structstruct__s__timer__entry.html">s_timer_entry</a> *row = (<a class="code" href="timer_8c.html#adb4c8d5876b377463d33bdeda56b575">timers</a>+i); |
|
134 <a name="l00145"></a>00145 |
|
135 <a name="l00146"></a>00146 <span class="keywordflow">if</span> (row->state & TIMER_ARMED) <span class="comment">/* if row is active */</span> |
|
136 <a name="l00147"></a>00147 { |
|
137 <a name="l00148"></a>00148 if (row->val <= real_total_sleep_time) <span class="comment">/* to be trigged */</span> |
|
138 <a name="l00149"></a>00149 { |
|
139 <a name="l00150"></a>00150 <span class="comment">/*printf("row->val(%d) <= (%d)real_total_sleep_time\n", row->val, real_total_sleep_time); */</span> |
|
140 <a name="l00151"></a>00151 if (!row->interval) <span class="comment">/* if simply outdated */</span> |
|
141 <a name="l00152"></a>00152 { |
|
142 <a name="l00153"></a>00153 row->state = TIMER_TRIG; <span class="comment">/* ask for trig */</span> |
|
143 <a name="l00154"></a>00154 } |
|
144 <a name="l00155"></a>00155 <span class="keywordflow">else</span> <span class="comment">/* or period have expired */</span> |
|
145 <a name="l00156"></a>00156 { |
|
146 <a name="l00157"></a>00157 <span class="comment">/* set val as interval, with overrun correction */</span> |
|
147 <a name="l00158"></a>00158 row->val = row->interval - (overrun % row->interval); |
|
148 <a name="l00159"></a>00159 row->state = TIMER_TRIG_PERIOD; <span class="comment">/* ask for trig, periodic */</span> |
|
149 <a name="l00160"></a>00160 <span class="comment">/* Check if this new timer value is the soonest */</span> |
|
150 <a name="l00161"></a>00161 next_wakeup = <a class="code" href="timer_8c.html#d2d95744d6e355721e7bbc2c07d934a4">min_val</a>(row->val,next_wakeup); |
|
151 <a name="l00162"></a>00162 } |
|
152 <a name="l00163"></a>00163 } |
|
153 <a name="l00164"></a>00164 <span class="keywordflow">else</span> |
|
154 <a name="l00165"></a>00165 { |
|
155 <a name="l00166"></a>00166 <span class="comment">/* Each armed timer value in decremented. */</span> |
|
156 <a name="l00167"></a>00167 row->val -= real_total_sleep_time; |
|
157 <a name="l00168"></a>00168 |
|
158 <a name="l00169"></a>00169 <span class="comment">/* Check if this new timer value is the soonest */</span> |
|
159 <a name="l00170"></a>00170 next_wakeup = <a class="code" href="timer_8c.html#d2d95744d6e355721e7bbc2c07d934a4">min_val</a>(row->val,next_wakeup); |
|
160 <a name="l00171"></a>00171 } |
|
161 <a name="l00172"></a>00172 } |
|
162 <a name="l00173"></a>00173 } |
|
163 <a name="l00174"></a>00174 |
|
164 <a name="l00175"></a>00175 <span class="comment">/* Remember how much time we should sleep. */</span> |
|
165 <a name="l00176"></a>00176 <a class="code" href="timer_8c.html#242986a224c5a02d6341dd5bfdf71008">total_sleep_time</a> = next_wakeup; |
|
166 <a name="l00177"></a>00177 |
|
167 <a name="l00178"></a>00178 <span class="comment">/* Set timer to soonest occurence */</span> |
|
168 <a name="l00179"></a>00179 <a class="code" href="timers__unix_8c.html#7996006c628d2df030b9684d7a86acd1">setTimer</a>(next_wakeup); |
|
169 <a name="l00180"></a>00180 |
|
170 <a name="l00181"></a>00181 <span class="comment">/* Then trig them or not. */</span> |
|
171 <a name="l00182"></a>00182 <span class="keywordflow">for</span>(i=0; i<=<a class="code" href="timer_8c.html#4afd63ff2f23fe7cd60f0d82e78c4426">last_timer_raw</a>; i++) |
|
172 <a name="l00183"></a>00183 { |
|
173 <a name="l00184"></a>00184 <a class="code" href="structstruct__s__timer__entry.html">s_timer_entry</a> *row = (<a class="code" href="timer_8c.html#adb4c8d5876b377463d33bdeda56b575">timers</a>+i); |
|
174 <a name="l00185"></a>00185 |
|
175 <a name="l00186"></a>00186 <span class="keywordflow">if</span> (row->state & TIMER_TRIG) |
|
176 <a name="l00187"></a>00187 { |
|
177 <a name="l00188"></a>00188 row->state &= ~TIMER_TRIG; <span class="comment">/* reset trig state (will be free if not periodic) */</span> |
|
178 <a name="l00189"></a>00189 <span class="keywordflow">if</span>(row->callback) |
|
179 <a name="l00190"></a>00190 (*row->callback)(row->d, row->id); <span class="comment">/* trig ! */</span> |
|
180 <a name="l00191"></a>00191 } |
|
181 <a name="l00192"></a>00192 } |
|
182 <a name="l00193"></a>00193 } |
|
183 <a name="l00194"></a>00194 |
|
184 </pre></div><hr size="1"><address style="align: right;"><small>Generated on Mon Jul 2 19:10:16 2007 for CanFestival by |
|
185 <a href="http://www.doxygen.org/index.html"> |
|
186 <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.1 </small></address> |
|
187 </body> |
|
188 </html> |
|