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<div class="title">PowerSave.cpp</div> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
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<a name="l00002"></a>00002 <span class="comment"> * Copyright (C) 2012 Southern Storm Software, Pty Ltd.</span>
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<a name="l00003"></a>00003 <span class="comment"> *</span>
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<a name="l00004"></a>00004 <span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a</span>
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<a name="l00005"></a>00005 <span class="comment"> * copy of this software and associated documentation files (the "Software"),</span>
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<a name="l00006"></a>00006 <span class="comment"> * to deal in the Software without restriction, including without limitation</span>
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<a name="l00007"></a>00007 <span class="comment"> * the rights to use, copy, modify, merge, publish, distribute, sublicense,</span>
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<a name="l00008"></a>00008 <span class="comment"> * and/or sell copies of the Software, and to permit persons to whom the</span>
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<a name="l00009"></a>00009 <span class="comment"> * Software is furnished to do so, subject to the following conditions:</span>
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<a name="l00010"></a>00010 <span class="comment"> *</span>
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<a name="l00011"></a>00011 <span class="comment"> * The above copyright notice and this permission notice shall be included</span>
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<a name="l00012"></a>00012 <span class="comment"> * in all copies or substantial portions of the Software.</span>
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<a name="l00013"></a>00013 <span class="comment"> *</span>
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<a name="l00014"></a>00014 <span class="comment"> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS</span>
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<a name="l00015"></a>00015 <span class="comment"> * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span>
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<a name="l00016"></a>00016 <span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span>
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<a name="l00017"></a>00017 <span class="comment"> * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span>
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<a name="l00018"></a>00018 <span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING</span>
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<a name="l00019"></a>00019 <span class="comment"> * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER</span>
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<a name="l00020"></a>00020 <span class="comment"> * DEALINGS IN THE SOFTWARE.</span>
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<a name="l00021"></a>00021 <span class="comment"> */</span>
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<a name="l00022"></a>00022
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<a name="l00023"></a>00023 <span class="preprocessor">#include "PowerSave.h"</span>
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<a name="l00024"></a>00024 <span class="preprocessor">#include <avr/wdt.h></span>
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<a name="l00025"></a>00025 <span class="preprocessor">#include <avr/sleep.h></span>
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<a name="l00026"></a>00026 <span class="preprocessor">#include <avr/power.h></span>
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<a name="l00027"></a>00027 <span class="preprocessor">#include <avr/interrupt.h></span>
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<a name="l00028"></a>00028
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<a name="l00036"></a>00036 <span class="comment">/*\@{*/</span>
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<a name="l00037"></a>00037
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<a name="l00048"></a>00048 ISR(WDT_vect)
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<a name="l00049"></a>00049 {
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<a name="l00050"></a>00050 wdt_disable();
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<a name="l00051"></a>00051 }
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<a name="l00132"></a><a class="code" href="group__power__save.html#ga95c1666038493a7f95be6768882eebad">00132</a> <span class="keywordtype">void</span> <a class="code" href="group__power__save.html#ga95c1666038493a7f95be6768882eebad" title="Puts the CPU to sleep for a specific duration.The analog to digital converter and the brown out detec...">sleepFor</a>(<a class="code" href="group__power__save.html#gabdc6266a040b28c4d79028ddb0ceae36" title="Duration to put the CPU to sleep with sleepFor().">SleepDuration</a> duration, uint8_t mode)
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<a name="l00133"></a>00133 {
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<a name="l00134"></a>00134 <span class="comment">// Turn off the analog to digital converter.</span>
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<a name="l00135"></a>00135 ADCSRA &= ~(1 << ADEN);
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<a name="l00136"></a>00136 power_adc_disable();
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<a name="l00137"></a>00137
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<a name="l00138"></a>00138 <span class="comment">// Turn on the watchdog timer for the desired duration.</span>
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<a name="l00139"></a>00139 wdt_enable(duration);
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<a name="l00140"></a>00140 WDTCSR |= (1 << WDIE);
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<a name="l00141"></a>00141
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<a name="l00142"></a>00142 <span class="comment">// Put the device to sleep, including turning off the Brown Out Detector.</span>
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<a name="l00143"></a>00143 set_sleep_mode(mode);
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<a name="l00144"></a>00144 cli();
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<a name="l00145"></a>00145 sleep_enable();
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<a name="l00146"></a>00146 <span class="preprocessor">#if defined(sleep_bod_disable)</span>
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<a name="l00147"></a>00147 <span class="preprocessor"></span> sleep_bod_disable();
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<a name="l00148"></a>00148 <span class="preprocessor">#endif</span>
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<a name="l00149"></a>00149 <span class="preprocessor"></span> sei();
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<a name="l00150"></a>00150 sleep_cpu();
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<a name="l00151"></a>00151 sleep_disable();
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<a name="l00152"></a>00152 sei();
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<a name="l00153"></a>00153
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<a name="l00154"></a>00154 <span class="comment">// Turn the analog to digital converter back on.</span>
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<a name="l00155"></a>00155 power_adc_enable();
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<a name="l00156"></a>00156 ADCSRA |= (1 << ADEN);
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<a name="l00157"></a>00157 }
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<a name="l00158"></a>00158
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<a name="l00159"></a>00159 <span class="comment">/*\@}*/</span>
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