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<div class="title">RTC.cpp</div> </div>
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<div class="contents">
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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 "RTC.h"</span>
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<a name="l00024"></a>00024 <span class="preprocessor">#if defined(ARDUINO) && ARDUINO >= 100</span>
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<a name="l00025"></a>00025 <span class="preprocessor"></span><span class="preprocessor">#include <Arduino.h></span>
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<a name="l00026"></a>00026 <span class="preprocessor">#else</span>
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<a name="l00027"></a>00027 <span class="preprocessor"></span><span class="preprocessor">#include <WProgram.h></span>
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<a name="l00028"></a>00028 <span class="preprocessor">#endif</span>
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<a name="l00029"></a>00029 <span class="preprocessor"></span><span class="preprocessor">#include <stdlib.h></span>
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<a name="l00030"></a>00030 <span class="preprocessor">#include <string.h></span>
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<a name="l00031"></a>00031
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<a name="l00058"></a>00058 <span class="preprocessor">#define DEFAULT_BYTE_COUNT 43 // Default simulates DS1307 NVRAM size.</span>
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<a name="l00059"></a>00059 <span class="preprocessor"></span>
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<a name="l00060"></a>00060 <span class="preprocessor">#define MILLIS_PER_DAY 86400000UL</span>
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<a name="l00061"></a>00061 <span class="preprocessor"></span><span class="preprocessor">#define MILLIS_PER_SECOND 1000UL</span>
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<a name="l00062"></a>00062 <span class="preprocessor"></span><span class="preprocessor">#define MILLIS_PER_MINUTE 60000UL</span>
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<a name="l00063"></a>00063 <span class="preprocessor"></span><span class="preprocessor">#define MILLIS_PER_HOUR 3600000UL</span>
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<a name="l00064"></a>00064 <span class="preprocessor"></span>
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<a name="l00065"></a>00065 <span class="keyword">static</span> uint8_t monthLengths[] = {
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<a name="l00066"></a>00066 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
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<a name="l00067"></a>00067 };
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<a name="l00068"></a>00068
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<a name="l00069"></a>00069 <span class="keyword">inline</span> <span class="keywordtype">bool</span> isLeapYear(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> year)
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<a name="l00070"></a>00070 {
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<a name="l00071"></a>00071 <span class="keywordflow">if</span> ((year % 100) == 0)
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<a name="l00072"></a>00072 <span class="keywordflow">return</span> (year % 400) == 0;
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<a name="l00073"></a>00073 <span class="keywordflow">else</span>
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<a name="l00074"></a>00074 <span class="keywordflow">return</span> (year % 4) == 0;
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<a name="l00075"></a>00075 }
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<a name="l00076"></a>00076
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<a name="l00077"></a>00077 <span class="keyword">inline</span> uint8_t monthLength(<span class="keyword">const</span> <a class="code" href="structRTCDate.html" title="Stores date information from a realtime clock chip.">RTCDate</a> *date)
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<a name="l00078"></a>00078 {
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<a name="l00079"></a>00079 <span class="keywordflow">if</span> (date-><a class="code" href="structRTCDate.html#a6e6196059b36186041a5312400ea9202" title="Month of the year (1-12)">month</a> != 2 || !isLeapYear(date-><a class="code" href="structRTCDate.html#a7d31822daff3c3fc947386abd897732f" title="Year (4-digit)">year</a>))
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<a name="l00080"></a>00080 <span class="keywordflow">return</span> monthLengths[date-><a class="code" href="structRTCDate.html#a6e6196059b36186041a5312400ea9202" title="Month of the year (1-12)">month</a> - 1];
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<a name="l00081"></a>00081 <span class="keywordflow">else</span>
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<a name="l00082"></a>00082 <span class="keywordflow">return</span> 29;
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<a name="l00083"></a>00083 }
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<a name="l00084"></a>00084
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<a name="l00090"></a><a class="code" href="classRTC.html#ada31c5120d18d2dd2863b3d440308da2">00090</a> <a class="code" href="classRTC.html#ada31c5120d18d2dd2863b3d440308da2" title="Constructs a new realtime clock handler.">RTC::RTC</a>()
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<a name="l00091"></a>00091 : midnight(millis() - 9 * MILLIS_PER_HOUR) <span class="comment">// Simulated clock starts at 9am</span>
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<a name="l00092"></a>00092 , nvram(0)
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<a name="l00093"></a>00093 {
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<a name="l00094"></a>00094 <span class="comment">// Start the simulated date at 1 Jan, 2000.</span>
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<a name="l00095"></a>00095 date.<a class="code" href="structRTCDate.html#a2d68ff3fb90240df522b41222362704c" title="Day of the month (1-31)">day</a> = 1;
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<a name="l00096"></a>00096 date.<a class="code" href="structRTCDate.html#a6e6196059b36186041a5312400ea9202" title="Month of the year (1-12)">month</a> = 1;
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<a name="l00097"></a>00097 date.<a class="code" href="structRTCDate.html#a7d31822daff3c3fc947386abd897732f" title="Year (4-digit)">year</a> = 2000;
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<a name="l00098"></a>00098
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<a name="l00099"></a>00099 <span class="comment">// Set all simulated alarms to 6am by default.</span>
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<a name="l00100"></a>00100 <span class="keywordflow">for</span> (uint8_t index = 0; index < <a class="code" href="classRTC.html#aee5ae8f600ee5296e65635c0d836fca3" title="Number of alarms that are supported by RTC::readAlarm() and RTC::writeAlarm().">ALARM_COUNT</a>; ++index) {
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<a name="l00101"></a>00101 alarms[index].<a class="code" href="structRTCAlarm.html#a75bdc42acd3ab3ad495680c6b6a34692" title="Hour of the day for the alarm (0-23).">hour</a> = 6;
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<a name="l00102"></a>00102 alarms[index].<a class="code" href="structRTCAlarm.html#ad9a75ceb4b4b3474baa66dd5466e62fe" title="Minute of the hour for the alarm (0-59).">minute</a> = 0;
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<a name="l00103"></a>00103 alarms[index].<a class="code" href="structRTCAlarm.html#a0f2ef7363cb60a26642d5295b77ca19e" title="Additional flags for the alarm.">flags</a> = 0;
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<a name="l00104"></a>00104 }
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<a name="l00105"></a>00105 }
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<a name="l00106"></a>00106
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<a name="l00107"></a>00107 RTC::~RTC()
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<a name="l00108"></a>00108 {
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<a name="l00109"></a>00109 <span class="keywordflow">if</span> (nvram)
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<a name="l00110"></a>00110 free(nvram);
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<a name="l00111"></a>00111 }
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<a name="l00112"></a>00112
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<a name="l00119"></a><a class="code" href="classRTC.html#a3690761f29654a2c9e676fcbfa32dd30">00119</a> <span class="keywordtype">bool</span> <a class="code" href="classRTC.html#a3690761f29654a2c9e676fcbfa32dd30" title="Returns true if the realtime clock has updated since the last call to this function.">RTC::hasUpdates</a>()
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<a name="l00120"></a>00120 {
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<a name="l00121"></a>00121 <span class="keywordflow">return</span> <span class="keyword">true</span>;
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<a name="l00122"></a>00122 }
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<a name="l00123"></a>00123
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<a name="l00129"></a><a class="code" href="classRTC.html#aaf0a5c1f32f210a49718d148620b5bec">00129</a> <span class="keywordtype">void</span> <a class="code" href="classRTC.html#aaf0a5c1f32f210a49718d148620b5bec" title="Reads the current time from the realtime clock into value.">RTC::readTime</a>(<a class="code" href="structRTCTime.html" title="Stores time information from a realtime clock chip.">RTCTime</a> *value)
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<a name="l00130"></a>00130 {
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<a name="l00131"></a>00131 <span class="comment">// Determine the number of seconds since the last midnight event.</span>
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<a name="l00132"></a>00132 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> sinceMidnight = millis() - midnight;
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<a name="l00133"></a>00133 <span class="keywordflow">if</span> (sinceMidnight >= MILLIS_PER_DAY) {
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<a name="l00134"></a>00134 <span class="comment">// We have overflowed into the next day. Readjust midnight.</span>
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<a name="l00135"></a>00135 midnight += MILLIS_PER_DAY;
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<a name="l00136"></a>00136 sinceMidnight -= MILLIS_PER_DAY;
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<a name="l00137"></a>00137
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<a name="l00138"></a>00138 <span class="comment">// Increment the simulated date.</span>
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<a name="l00139"></a>00139 <a class="code" href="classRTC.html#adc29d7c43efc5a192d21965da5c3ee1d" title="Adjusts date up or down one day according to flags.">adjustDays</a>(&date, <a class="code" href="classRTC.html#aacbe3ebbf893685950b05327c11d5c37" title="Increment the day, month, or year in a call to adjustDays(), adjustMonths(), or adjustYears().">INCREMENT</a>);
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<a name="l00140"></a>00140 }
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<a name="l00141"></a>00141 value-><a class="code" href="structRTCTime.html#a87b7c02e535d808dcba04c77e34abb91" title="Second within the minute (0-59)">second</a> = (uint8_t)(((sinceMidnight / MILLIS_PER_SECOND) % 60));
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<a name="l00142"></a>00142 value-><a class="code" href="structRTCTime.html#acf2161ca037080dc4b767e636ad8db84" title="Minute within the hour (0-59)">minute</a> = (uint8_t)(((sinceMidnight / MILLIS_PER_MINUTE) % 60));
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<a name="l00143"></a>00143 value-><a class="code" href="structRTCTime.html#a98ba717092ef856dd2b773ba02fcb1a4" title="Hour of the day (0-23)">hour</a> = (uint8_t)(sinceMidnight / MILLIS_PER_HOUR);
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<a name="l00144"></a>00144 }
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<a name="l00145"></a>00145
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<a name="l00154"></a><a class="code" href="classRTC.html#aa1e21bf42ebd4456919744ae0f4f631e">00154</a> <span class="keywordtype">void</span> <a class="code" href="classRTC.html#aa1e21bf42ebd4456919744ae0f4f631e" title="Reads the current date from the realtime clock into value.">RTC::readDate</a>(<a class="code" href="structRTCDate.html" title="Stores date information from a realtime clock chip.">RTCDate</a> *value)
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<a name="l00155"></a>00155 {
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<a name="l00156"></a>00156 *value = date;
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<a name="l00157"></a>00157 }
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<a name="l00158"></a>00158
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<a name="l00164"></a><a class="code" href="classRTC.html#a102e2ec15bf0273d8f7e9ce4b6dcc96e">00164</a> <span class="keywordtype">void</span> <a class="code" href="classRTC.html#a102e2ec15bf0273d8f7e9ce4b6dcc96e" title="Updates the time in the realtime clock to match value.">RTC::writeTime</a>(<span class="keyword">const</span> <a class="code" href="structRTCTime.html" title="Stores time information from a realtime clock chip.">RTCTime</a> *value)
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<a name="l00165"></a>00165 {
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<a name="l00166"></a>00166 <span class="comment">// Adjust the position of the last simulated midnight event.</span>
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<a name="l00167"></a>00167 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> sinceMidnight =
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<a name="l00168"></a>00168 value-><a class="code" href="structRTCTime.html#a87b7c02e535d808dcba04c77e34abb91" title="Second within the minute (0-59)">second</a> * MILLIS_PER_SECOND +
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<a name="l00169"></a>00169 value-><a class="code" href="structRTCTime.html#acf2161ca037080dc4b767e636ad8db84" title="Minute within the hour (0-59)">minute</a> * MILLIS_PER_MINUTE +
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<a name="l00170"></a>00170 value-><a class="code" href="structRTCTime.html#a98ba717092ef856dd2b773ba02fcb1a4" title="Hour of the day (0-23)">hour</a> * MILLIS_PER_HOUR;
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<a name="l00171"></a>00171 midnight = millis() - sinceMidnight;
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<a name="l00172"></a>00172 }
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<a name="l00173"></a>00173
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<a name="l00179"></a><a class="code" href="classRTC.html#ae667600d05c8e7b06a93574dd068a4d7">00179</a> <span class="keywordtype">void</span> <a class="code" href="classRTC.html#ae667600d05c8e7b06a93574dd068a4d7" title="Updates the date in the realtime clock to match value.">RTC::writeDate</a>(<span class="keyword">const</span> <a class="code" href="structRTCDate.html" title="Stores date information from a realtime clock chip.">RTCDate</a> *value)
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<a name="l00180"></a>00180 {
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<a name="l00181"></a>00181 date = *value;
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<a name="l00182"></a>00182 }
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<a name="l00183"></a>00183
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<a name="l00194"></a><a class="code" href="classRTC.html#ade282d7a60147c3f0269f1fcd59c8d66">00194</a> <span class="keywordtype">void</span> <a class="code" href="classRTC.html#ade282d7a60147c3f0269f1fcd59c8d66" title="Reads the details of the alarm with index alarmNum into value.">RTC::readAlarm</a>(uint8_t alarmNum, <a class="code" href="structRTCAlarm.html" title="Stores alarm information from a realtime clock chip.">RTCAlarm</a> *value)
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<a name="l00195"></a>00195 {
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<a name="l00196"></a>00196 *value = alarms[alarmNum];
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<a name="l00197"></a>00197 }
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<a name="l00198"></a>00198
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<a name="l00209"></a><a class="code" href="classRTC.html#a0e96c91efd9e7a6340effdae3eadf17e">00209</a> <span class="keywordtype">void</span> <a class="code" href="classRTC.html#a0e96c91efd9e7a6340effdae3eadf17e" title="Updates the details of the alarm with index alarmNum from value.">RTC::writeAlarm</a>(uint8_t alarmNum, <span class="keyword">const</span> <a class="code" href="structRTCAlarm.html" title="Stores alarm information from a realtime clock chip.">RTCAlarm</a> *value)
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<a name="l00210"></a>00210 {
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<a name="l00211"></a>00211 alarms[alarmNum] = *value;
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<a name="l00212"></a>00212 }
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<a name="l00213"></a>00213
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<a name="l00220"></a><a class="code" href="classRTC.html#acfdebfb449710e44e11f9a3675e14fd8">00220</a> <span class="keywordtype">int</span> <a class="code" href="classRTC.html#acfdebfb449710e44e11f9a3675e14fd8" title="Returns the number of bytes of non-volatile memory that can be used for storage of arbitrary settings...">RTC::byteCount</a>()<span class="keyword"> const</span>
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<a name="l00221"></a>00221 <span class="keyword"></span>{
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<a name="l00222"></a>00222 <span class="keywordflow">return</span> DEFAULT_BYTE_COUNT;
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<a name="l00223"></a>00223 }
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<a name="l00224"></a>00224
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<a name="l00232"></a><a class="code" href="classRTC.html#a0f47b10b436e3f9d36e04ec907579431">00232</a> uint8_t <a class="code" href="classRTC.html#a0f47b10b436e3f9d36e04ec907579431" title="Reads the byte at offset within the realtime clock's non-volatile memory.">RTC::readByte</a>(uint8_t offset)
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<a name="l00233"></a>00233 {
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<a name="l00234"></a>00234 <span class="keywordflow">if</span> (nvram)
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<a name="l00235"></a>00235 <span class="keywordflow">return</span> nvram[offset];
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<a name="l00236"></a>00236 <span class="keywordflow">else</span>
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<a name="l00237"></a>00237 <span class="keywordflow">return</span> 0;
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<a name="l00238"></a>00238 }
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<a name="l00239"></a>00239
|
|
<a name="l00247"></a><a class="code" href="classRTC.html#a1cab6397ec04b1e2b3feea5b3cd1f749">00247</a> <span class="keywordtype">void</span> <a class="code" href="classRTC.html#a1cab6397ec04b1e2b3feea5b3cd1f749" title="Writes value to offset within the realtime clock's non-volatile memory.">RTC::writeByte</a>(uint8_t offset, uint8_t value)
|
|
<a name="l00248"></a>00248 {
|
|
<a name="l00249"></a>00249 <span class="keywordflow">if</span> (nvram) {
|
|
<a name="l00250"></a>00250 nvram[offset] = value;
|
|
<a name="l00251"></a>00251 } <span class="keywordflow">else</span> {
|
|
<a name="l00252"></a>00252 nvram = (uint8_t *)malloc(DEFAULT_BYTE_COUNT);
|
|
<a name="l00253"></a>00253 <span class="keywordflow">if</span> (nvram) {
|
|
<a name="l00254"></a>00254 memset(nvram, 0, DEFAULT_BYTE_COUNT);
|
|
<a name="l00255"></a>00255 nvram[offset] = value;
|
|
<a name="l00256"></a>00256 }
|
|
<a name="l00257"></a>00257 }
|
|
<a name="l00258"></a>00258 }
|
|
<a name="l00259"></a>00259
|
|
<a name="l00273"></a><a class="code" href="classRTC.html#aeca3c8387332e8cabfd09c1806276e5a">00273</a> <span class="keywordtype">int</span> <a class="code" href="classRTC.html#aeca3c8387332e8cabfd09c1806276e5a" title="Reads the value of the temperature sensor and returns the temperature in quarters of a degree celcius...">RTC::readTemperature</a>()
|
|
<a name="l00274"></a>00274 {
|
|
<a name="l00275"></a>00275 <span class="keywordflow">return</span> <a class="code" href="classRTC.html#a9ed5480b362a83f1f45c4d3bcf7c3bf8" title="Value that is returned from readTemperature() if the realtime clock chip cannot determine the tempera...">NO_TEMPERATURE</a>;
|
|
<a name="l00276"></a>00276 }
|
|
<a name="l00277"></a>00277
|
|
<a name="l00298"></a><a class="code" href="classRTC.html#adc29d7c43efc5a192d21965da5c3ee1d">00298</a> <span class="keywordtype">void</span> <a class="code" href="classRTC.html#adc29d7c43efc5a192d21965da5c3ee1d" title="Adjusts date up or down one day according to flags.">RTC::adjustDays</a>(<a class="code" href="structRTCDate.html" title="Stores date information from a realtime clock chip.">RTCDate</a> *date, uint8_t flags)
|
|
<a name="l00299"></a>00299 {
|
|
<a name="l00300"></a>00300 <span class="keywordflow">if</span> (flags & <a class="code" href="classRTC.html#a05b1bd1479afc80682abdd4f3e58dc6f" title="Decrement the day, month, or year in a call to adjustDays(), adjustMonths(), or adjustYears().">DECREMENT</a>) {
|
|
<a name="l00301"></a>00301 --(date-><a class="code" href="structRTCDate.html#a2d68ff3fb90240df522b41222362704c" title="Day of the month (1-31)">day</a>);
|
|
<a name="l00302"></a>00302 <span class="keywordflow">if</span> (date-><a class="code" href="structRTCDate.html#a2d68ff3fb90240df522b41222362704c" title="Day of the month (1-31)">day</a> == 0) {
|
|
<a name="l00303"></a>00303 <span class="keywordflow">if</span> (!(flags & <a class="code" href="classRTC.html#a02ace2d775063be9a99035851c9274eb" title="Wrap around to the beginning of the current month/year rather than advance to the next one...">WRAP</a>)) {
|
|
<a name="l00304"></a>00304 --(date-><a class="code" href="structRTCDate.html#a6e6196059b36186041a5312400ea9202" title="Month of the year (1-12)">month</a>);
|
|
<a name="l00305"></a>00305 <span class="keywordflow">if</span> (date-><a class="code" href="structRTCDate.html#a6e6196059b36186041a5312400ea9202" title="Month of the year (1-12)">month</a> == 0)
|
|
<a name="l00306"></a>00306 date-><a class="code" href="structRTCDate.html#a6e6196059b36186041a5312400ea9202" title="Month of the year (1-12)">month</a> = 12;
|
|
<a name="l00307"></a>00307 }
|
|
<a name="l00308"></a>00308 date-><a class="code" href="structRTCDate.html#a2d68ff3fb90240df522b41222362704c" title="Day of the month (1-31)">day</a> = monthLength(date);
|
|
<a name="l00309"></a>00309 }
|
|
<a name="l00310"></a>00310 } <span class="keywordflow">else</span> {
|
|
<a name="l00311"></a>00311 ++(date-><a class="code" href="structRTCDate.html#a2d68ff3fb90240df522b41222362704c" title="Day of the month (1-31)">day</a>);
|
|
<a name="l00312"></a>00312 <span class="keywordflow">if</span> (date-><a class="code" href="structRTCDate.html#a2d68ff3fb90240df522b41222362704c" title="Day of the month (1-31)">day</a> > monthLength(date)) {
|
|
<a name="l00313"></a>00313 <span class="keywordflow">if</span> (!(flags & <a class="code" href="classRTC.html#a02ace2d775063be9a99035851c9274eb" title="Wrap around to the beginning of the current month/year rather than advance to the next one...">WRAP</a>)) {
|
|
<a name="l00314"></a>00314 ++(date-><a class="code" href="structRTCDate.html#a6e6196059b36186041a5312400ea9202" title="Month of the year (1-12)">month</a>);
|
|
<a name="l00315"></a>00315 <span class="keywordflow">if</span> (date-><a class="code" href="structRTCDate.html#a6e6196059b36186041a5312400ea9202" title="Month of the year (1-12)">month</a> == 13)
|
|
<a name="l00316"></a>00316 date-><a class="code" href="structRTCDate.html#a6e6196059b36186041a5312400ea9202" title="Month of the year (1-12)">month</a> = 1;
|
|
<a name="l00317"></a>00317 }
|
|
<a name="l00318"></a>00318 date-><a class="code" href="structRTCDate.html#a2d68ff3fb90240df522b41222362704c" title="Day of the month (1-31)">day</a> = 1;
|
|
<a name="l00319"></a>00319 }
|
|
<a name="l00320"></a>00320 }
|
|
<a name="l00321"></a>00321 }
|
|
<a name="l00322"></a>00322
|
|
<a name="l00328"></a><a class="code" href="classRTC.html#aeca597e6e37a05716e664242f9cfc5f4">00328</a> <span class="keywordtype">void</span> <a class="code" href="classRTC.html#aeca597e6e37a05716e664242f9cfc5f4" title="Adjusts date up or down one month according to flags.">RTC::adjustMonths</a>(<a class="code" href="structRTCDate.html" title="Stores date information from a realtime clock chip.">RTCDate</a> *date, uint8_t flags)
|
|
<a name="l00329"></a>00329 {
|
|
<a name="l00330"></a>00330 <span class="keywordflow">if</span> (flags & <a class="code" href="classRTC.html#a05b1bd1479afc80682abdd4f3e58dc6f" title="Decrement the day, month, or year in a call to adjustDays(), adjustMonths(), or adjustYears().">DECREMENT</a>) {
|
|
<a name="l00331"></a>00331 --(date-><a class="code" href="structRTCDate.html#a6e6196059b36186041a5312400ea9202" title="Month of the year (1-12)">month</a>);
|
|
<a name="l00332"></a>00332 <span class="keywordflow">if</span> (date-><a class="code" href="structRTCDate.html#a6e6196059b36186041a5312400ea9202" title="Month of the year (1-12)">month</a> == 0) {
|
|
<a name="l00333"></a>00333 date-><a class="code" href="structRTCDate.html#a6e6196059b36186041a5312400ea9202" title="Month of the year (1-12)">month</a> = 12;
|
|
<a name="l00334"></a>00334 <span class="keywordflow">if</span> (!(flags & <a class="code" href="classRTC.html#a02ace2d775063be9a99035851c9274eb" title="Wrap around to the beginning of the current month/year rather than advance to the next one...">WRAP</a>) && date-><a class="code" href="structRTCDate.html#a7d31822daff3c3fc947386abd897732f" title="Year (4-digit)">year</a> > 2000)
|
|
<a name="l00335"></a>00335 --(date-><a class="code" href="structRTCDate.html#a7d31822daff3c3fc947386abd897732f" title="Year (4-digit)">year</a>);
|
|
<a name="l00336"></a>00336 }
|
|
<a name="l00337"></a>00337 } <span class="keywordflow">else</span> {
|
|
<a name="l00338"></a>00338 ++(date-><a class="code" href="structRTCDate.html#a6e6196059b36186041a5312400ea9202" title="Month of the year (1-12)">month</a>);
|
|
<a name="l00339"></a>00339 <span class="keywordflow">if</span> (date-><a class="code" href="structRTCDate.html#a6e6196059b36186041a5312400ea9202" title="Month of the year (1-12)">month</a> == 13) {
|
|
<a name="l00340"></a>00340 date-><a class="code" href="structRTCDate.html#a6e6196059b36186041a5312400ea9202" title="Month of the year (1-12)">month</a> = 1;
|
|
<a name="l00341"></a>00341 <span class="keywordflow">if</span> (!(flags & <a class="code" href="classRTC.html#a02ace2d775063be9a99035851c9274eb" title="Wrap around to the beginning of the current month/year rather than advance to the next one...">WRAP</a>) && date-><a class="code" href="structRTCDate.html#a7d31822daff3c3fc947386abd897732f" title="Year (4-digit)">year</a> < 2099)
|
|
<a name="l00342"></a>00342 ++(date-><a class="code" href="structRTCDate.html#a7d31822daff3c3fc947386abd897732f" title="Year (4-digit)">year</a>);
|
|
<a name="l00343"></a>00343 }
|
|
<a name="l00344"></a>00344 }
|
|
<a name="l00345"></a>00345 uint8_t len = monthLength(date);
|
|
<a name="l00346"></a>00346 <span class="keywordflow">if</span> (date-><a class="code" href="structRTCDate.html#a2d68ff3fb90240df522b41222362704c" title="Day of the month (1-31)">day</a> > len)
|
|
<a name="l00347"></a>00347 date-><a class="code" href="structRTCDate.html#a2d68ff3fb90240df522b41222362704c" title="Day of the month (1-31)">day</a> = len;
|
|
<a name="l00348"></a>00348 }
|
|
<a name="l00349"></a>00349
|
|
<a name="l00355"></a><a class="code" href="classRTC.html#a31d10cb2f7cac8839bd4be2d858b802d">00355</a> <span class="keywordtype">void</span> <a class="code" href="classRTC.html#a31d10cb2f7cac8839bd4be2d858b802d" title="Adjusts date up or down one year according to flags.">RTC::adjustYears</a>(<a class="code" href="structRTCDate.html" title="Stores date information from a realtime clock chip.">RTCDate</a> *date, uint8_t flags)
|
|
<a name="l00356"></a>00356 {
|
|
<a name="l00357"></a>00357 <span class="keywordflow">if</span> (flags & <a class="code" href="classRTC.html#a05b1bd1479afc80682abdd4f3e58dc6f" title="Decrement the day, month, or year in a call to adjustDays(), adjustMonths(), or adjustYears().">DECREMENT</a>) {
|
|
<a name="l00358"></a>00358 --(date-><a class="code" href="structRTCDate.html#a7d31822daff3c3fc947386abd897732f" title="Year (4-digit)">year</a>);
|
|
<a name="l00359"></a>00359 <span class="keywordflow">if</span> (date-><a class="code" href="structRTCDate.html#a7d31822daff3c3fc947386abd897732f" title="Year (4-digit)">year</a> < 2000)
|
|
<a name="l00360"></a>00360 date-><a class="code" href="structRTCDate.html#a7d31822daff3c3fc947386abd897732f" title="Year (4-digit)">year</a> = 2000;
|
|
<a name="l00361"></a>00361 } <span class="keywordflow">else</span> {
|
|
<a name="l00362"></a>00362 ++(date-><a class="code" href="structRTCDate.html#a7d31822daff3c3fc947386abd897732f" title="Year (4-digit)">year</a>);
|
|
<a name="l00363"></a>00363 <span class="keywordflow">if</span> (date-><a class="code" href="structRTCDate.html#a7d31822daff3c3fc947386abd897732f" title="Year (4-digit)">year</a> > 2099)
|
|
<a name="l00364"></a>00364 date-><a class="code" href="structRTCDate.html#a7d31822daff3c3fc947386abd897732f" title="Year (4-digit)">year</a> = 2099;
|
|
<a name="l00365"></a>00365 }
|
|
<a name="l00366"></a>00366 uint8_t len = monthLength(date);
|
|
<a name="l00367"></a>00367 <span class="keywordflow">if</span> (date-><a class="code" href="structRTCDate.html#a2d68ff3fb90240df522b41222362704c" title="Day of the month (1-31)">day</a> > len)
|
|
<a name="l00368"></a>00368 date-><a class="code" href="structRTCDate.html#a2d68ff3fb90240df522b41222362704c" title="Day of the month (1-31)">day</a> = len;
|
|
<a name="l00369"></a>00369 }
|
|
<a name="l00370"></a>00370
|
|
</pre></div></div>
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<hr class="footer"/><address class="footer"><small>Generated on Fri Jun 1 2012 14:29:17 for ArduinoLibs by 
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<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.4 </small></address>
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