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<li class="navelem"><a class="el" href="dir_bc0718b08fb2015b8e59c47b2805f60c.html">libraries</a></li><li class="navelem"><a class="el" href="dir_f34881fcf60f680b800190d5274dfaea.html">RTC</a></li> </ul>
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<div class="title">DS1307RTC.cpp</div> </div>
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<div class="contents">
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (C) 2012 Southern Storm Software, Pty Ltd.</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * copy of this software and associated documentation files (the "Software"),</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * to deal in the Software without restriction, including without limitation</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * the rights to use, copy, modify, merge, publish, distribute, sublicense,</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * and/or sell copies of the Software, and to permit persons to whom the</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * Software is furnished to do so, subject to the following conditions:</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * The above copyright notice and this permission notice shall be included</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * in all copies or substantial portions of the Software.</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER</span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * DEALINGS IN THE SOFTWARE.</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include "DS1307RTC.h"</span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "../I2C/I2CMaster.h"</span></div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#if defined(ARDUINO) && ARDUINO >= 100</span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor"></span><span class="preprocessor">#include <Arduino.h></span></div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#else</span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor"></span><span class="preprocessor">#include <WProgram.h></span></div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#endif</span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment">// I2C address of the RTC chip (7-bit).</span></div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="preprocessor">#define DS1307_I2C_ADDRESS 0x68</span></div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment">// Registers.</span></div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="preprocessor">#define DS1307_SECOND 0x00</span></div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="preprocessor"></span><span class="preprocessor">#define DS1307_MINUTE 0x01</span></div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="preprocessor"></span><span class="preprocessor">#define DS1307_HOUR 0x02</span></div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="preprocessor"></span><span class="preprocessor">#define DS1307_DAY_OF_WEEK 0x03</span></div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="preprocessor"></span><span class="preprocessor">#define DS1307_DATE 0x04</span></div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="preprocessor"></span><span class="preprocessor">#define DS1307_MONTH 0x05</span></div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="preprocessor"></span><span class="preprocessor">#define DS1307_YEAR 0x06</span></div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="preprocessor"></span><span class="preprocessor">#define DS1307_CONTROL 0x07</span></div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="preprocessor"></span><span class="preprocessor">#define DS1307_NVRAM 0x08</span></div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment">// Alarm storage at the end of the RTC's NVRAM.</span></div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="preprocessor">#define DS1307_ALARM_SIZE 3</span></div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="preprocessor"></span><span class="preprocessor">#define DS1307_ALARMS (64 - RTC::ALARM_COUNT * DS1307_ALARM_SIZE - 1)</span></div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="preprocessor"></span><span class="preprocessor">#define DS1307_ALARM_MAGIC 63</span></div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00083"></a><span class="lineno"><a class="line" href="classDS1307RTC.html#a092805d75bea323dc4be062638bff866"> 83</a></span> <a class="code" href="classDS1307RTC.html#a092805d75bea323dc4be062638bff866">DS1307RTC::DS1307RTC</a>(<a class="code" href="classI2CMaster.html">I2CMaster</a> &bus, uint8_t oneHzPin)</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  : _bus(&bus)</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  , _oneHzPin(oneHzPin)</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  , prevOneHz(false)</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  , _isRealTime(true)</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> {</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="comment">// Make sure the CH bit in register 0 is off or the clock won't update.</span></div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  _bus-><a class="code" href="classI2CMaster.html#a01960fc821cb25e4c88c26d2c6107e35">startWrite</a>(DS1307_I2C_ADDRESS);</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(DS1307_SECOND);</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">if</span> (_bus-><a class="code" href="classI2CMaster.html#a4e5f1a1a4c2242699be5a35fc4872fde">startRead</a>(DS1307_I2C_ADDRESS, 1)) {</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  uint8_t value = _bus-><a class="code" href="classI2CMaster.html#a49eeebb57f6bc06de39973fe836369cd">read</a>();</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">if</span> ((value & 0x80) != 0)</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  writeRegister(DS1307_SECOND, value & 0x7F);</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="comment">// Did not get an acknowledgement from the RTC chip.</span></div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  _isRealTime = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  }</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="comment">// Turn on the 1 Hz square wave signal if required.</span></div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordflow">if</span> (oneHzPin != 255 && _isRealTime) {</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  pinMode(oneHzPin, INPUT);</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  digitalWrite(oneHzPin, HIGH);</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  writeRegister(DS1307_CONTROL, 0x10);</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  }</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="comment">// Initialize the alarms in the RTC chip's NVRAM.</span></div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordflow">if</span> (_isRealTime)</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  initAlarms();</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> }</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div>
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<div class="line"><a name="l00118"></a><span class="lineno"><a class="line" href="classDS1307RTC.html#a6fec8ff71f33cc1a129eb0bd009600b0"> 118</a></span> <span class="keywordtype">bool</span> <a class="code" href="classDS1307RTC.html#a6fec8ff71f33cc1a129eb0bd009600b0">DS1307RTC::hasUpdates</a>()</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> {</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="comment">// If not using a 1 Hz pin or there is no RTC chip available,</span></div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="comment">// then assume that there is an update available.</span></div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">if</span> (_oneHzPin == 255 || !_isRealTime)</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="comment">// The DS1307 updates the internal registers on the falling edge of the</span></div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="comment">// 1 Hz clock. The values should be ready to read on the rising edge.</span></div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordtype">bool</span> value = digitalRead(_oneHzPin);</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">if</span> (value && !prevOneHz) {</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  prevOneHz = value;</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  prevOneHz = value;</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  }</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> }</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> </div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="keyword">inline</span> uint8_t fromBCD(uint8_t value)</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> {</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordflow">return</span> (value >> 4) * 10 + (value & 0x0F);</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> }</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> </div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="keyword">inline</span> uint8_t fromHourBCD(uint8_t value)</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> {</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">if</span> ((value & 0x40) != 0) {</div>
|
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="comment">// 12-hour mode.</span></div>
|
|
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  uint8_t result = ((value >> 4) & 0x01) * 10 + (value & 0x0F);</div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">if</span> ((value & 0x20) != 0)</div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordflow">return</span> (result == 12) ? 12 : (result + 12); <span class="comment">// PM</span></div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keywordflow">else</span></div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keywordflow">return</span> (result == 12) ? 0 : result; <span class="comment">// AM</span></div>
|
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  } <span class="keywordflow">else</span> {</div>
|
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="comment">// 24-hour mode.</span></div>
|
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordflow">return</span> fromBCD(value);</div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  }</div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> }</div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> </div>
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<div class="line"><a name="l00157"></a><span class="lineno"><a class="line" href="classDS1307RTC.html#acd9800d6df2244b8e4e790480a1d62a6"> 157</a></span> <span class="keywordtype">void</span> <a class="code" href="classDS1307RTC.html#acd9800d6df2244b8e4e790480a1d62a6">DS1307RTC::readTime</a>(<a class="code" href="structRTCTime.html">RTCTime</a> *value)</div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> {</div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">if</span> (_isRealTime) {</div>
|
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  _bus-><a class="code" href="classI2CMaster.html#a01960fc821cb25e4c88c26d2c6107e35">startWrite</a>(DS1307_I2C_ADDRESS);</div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(DS1307_SECOND);</div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordflow">if</span> (_bus-><a class="code" href="classI2CMaster.html#a4e5f1a1a4c2242699be5a35fc4872fde">startRead</a>(DS1307_I2C_ADDRESS, 3)) {</div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  value-><a class="code" href="structRTCTime.html#a87b7c02e535d808dcba04c77e34abb91">second</a> = fromBCD(_bus-><a class="code" href="classI2CMaster.html#a49eeebb57f6bc06de39973fe836369cd">read</a>() & 0x7F);</div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  value-><a class="code" href="structRTCTime.html#acf2161ca037080dc4b767e636ad8db84">minute</a> = fromBCD(_bus-><a class="code" href="classI2CMaster.html#a49eeebb57f6bc06de39973fe836369cd">read</a>());</div>
|
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  value-><a class="code" href="structRTCTime.html#a98ba717092ef856dd2b773ba02fcb1a4">hour</a> = fromHourBCD(_bus-><a class="code" href="classI2CMaster.html#a49eeebb57f6bc06de39973fe836369cd">read</a>());</div>
|
|
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  } <span class="keywordflow">else</span> {</div>
|
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="comment">// RTC chip is not responding.</span></div>
|
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  value-><a class="code" href="structRTCTime.html#a87b7c02e535d808dcba04c77e34abb91">second</a> = 0;</div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  value-><a class="code" href="structRTCTime.html#acf2161ca037080dc4b767e636ad8db84">minute</a> = 0;</div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  value-><a class="code" href="structRTCTime.html#a98ba717092ef856dd2b773ba02fcb1a4">hour</a> = 0;</div>
|
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  }</div>
|
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  } <span class="keywordflow">else</span> {</div>
|
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <a class="code" href="classRTC.html#aaf0a5c1f32f210a49718d148620b5bec">RTC::readTime</a>(value);</div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  }</div>
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<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> }</div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> </div>
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<div class="line"><a name="l00177"></a><span class="lineno"><a class="line" href="classDS1307RTC.html#a6fb56d1690bc30e7995961a5b5e5fdc4"> 177</a></span> <span class="keywordtype">void</span> <a class="code" href="classDS1307RTC.html#a6fb56d1690bc30e7995961a5b5e5fdc4">DS1307RTC::readDate</a>(<a class="code" href="structRTCDate.html">RTCDate</a> *value)</div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> {</div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordflow">if</span> (!_isRealTime) {</div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <a class="code" href="classRTC.html#aa1e21bf42ebd4456919744ae0f4f631e">RTC::readDate</a>(value);</div>
|
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordflow">return</span>;</div>
|
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  }</div>
|
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<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  _bus-><a class="code" href="classI2CMaster.html#a01960fc821cb25e4c88c26d2c6107e35">startWrite</a>(DS1307_I2C_ADDRESS);</div>
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<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(DS1307_DATE);</div>
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<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="keywordflow">if</span> (_bus-><a class="code" href="classI2CMaster.html#a4e5f1a1a4c2242699be5a35fc4872fde">startRead</a>(DS1307_I2C_ADDRESS, 3)) {</div>
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<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  value-><a class="code" href="structRTCDate.html#a2d68ff3fb90240df522b41222362704c">day</a> = fromBCD(_bus-><a class="code" href="classI2CMaster.html#a49eeebb57f6bc06de39973fe836369cd">read</a>());</div>
|
|
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  value-><a class="code" href="structRTCDate.html#a6e6196059b36186041a5312400ea9202">month</a> = fromBCD(_bus-><a class="code" href="classI2CMaster.html#a49eeebb57f6bc06de39973fe836369cd">read</a>());</div>
|
|
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  value-><a class="code" href="structRTCDate.html#a7d31822daff3c3fc947386abd897732f">year</a> = fromBCD(_bus-><a class="code" href="classI2CMaster.html#a49eeebb57f6bc06de39973fe836369cd">read</a>()) + 2000;</div>
|
|
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="comment">// RTC chip is not responding.</span></div>
|
|
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  value-><a class="code" href="structRTCDate.html#a2d68ff3fb90240df522b41222362704c">day</a> = 1;</div>
|
|
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  value-><a class="code" href="structRTCDate.html#a6e6196059b36186041a5312400ea9202">month</a> = 1;</div>
|
|
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  value-><a class="code" href="structRTCDate.html#a7d31822daff3c3fc947386abd897732f">year</a> = 2000;</div>
|
|
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  }</div>
|
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<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> }</div>
|
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<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> </div>
|
|
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> <span class="keyword">inline</span> uint8_t toBCD(uint8_t value)</div>
|
|
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> {</div>
|
|
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordflow">return</span> ((value / 10) << 4) + (value % 10);</div>
|
|
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> }</div>
|
|
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> </div>
|
|
<div class="line"><a name="l00202"></a><span class="lineno"><a class="line" href="classDS1307RTC.html#a0a5d0d86a0345420ebb289ea724b19e8"> 202</a></span> <span class="keywordtype">void</span> <a class="code" href="classDS1307RTC.html#a0a5d0d86a0345420ebb289ea724b19e8">DS1307RTC::writeTime</a>(<span class="keyword">const</span> <a class="code" href="structRTCTime.html">RTCTime</a> *value)</div>
|
|
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> {</div>
|
|
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordflow">if</span> (_isRealTime) {</div>
|
|
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  _bus-><a class="code" href="classI2CMaster.html#a01960fc821cb25e4c88c26d2c6107e35">startWrite</a>(DS1307_I2C_ADDRESS);</div>
|
|
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(DS1307_SECOND);</div>
|
|
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(toBCD(value-><a class="code" href="structRTCTime.html#a87b7c02e535d808dcba04c77e34abb91">second</a>));</div>
|
|
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(toBCD(value-><a class="code" href="structRTCTime.html#acf2161ca037080dc4b767e636ad8db84">minute</a>));</div>
|
|
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(toBCD(value-><a class="code" href="structRTCTime.html#a98ba717092ef856dd2b773ba02fcb1a4">hour</a>)); <span class="comment">// Changes mode to 24-hour clock.</span></div>
|
|
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  _bus-><a class="code" href="classI2CMaster.html#ab29f63551ddeb032a91505d1c0b8ac41">endWrite</a>();</div>
|
|
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <a class="code" href="classRTC.html#a102e2ec15bf0273d8f7e9ce4b6dcc96e">RTC::writeTime</a>(value);</div>
|
|
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  }</div>
|
|
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> }</div>
|
|
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> </div>
|
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<div class="line"><a name="l00216"></a><span class="lineno"><a class="line" href="classDS1307RTC.html#a4f7346be33612cf9ecd96080eb046230"> 216</a></span> <span class="keywordtype">void</span> <a class="code" href="classDS1307RTC.html#a4f7346be33612cf9ecd96080eb046230">DS1307RTC::writeDate</a>(<span class="keyword">const</span> <a class="code" href="structRTCDate.html">RTCDate</a> *value)</div>
|
|
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> {</div>
|
|
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordflow">if</span> (_isRealTime) {</div>
|
|
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  _bus-><a class="code" href="classI2CMaster.html#a01960fc821cb25e4c88c26d2c6107e35">startWrite</a>(DS1307_I2C_ADDRESS);</div>
|
|
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(DS1307_DATE);</div>
|
|
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(toBCD(value-><a class="code" href="structRTCDate.html#a2d68ff3fb90240df522b41222362704c">day</a>));</div>
|
|
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(toBCD(value-><a class="code" href="structRTCDate.html#a6e6196059b36186041a5312400ea9202">month</a>));</div>
|
|
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(toBCD(value-><a class="code" href="structRTCDate.html#a7d31822daff3c3fc947386abd897732f">year</a> % 100));</div>
|
|
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  _bus-><a class="code" href="classI2CMaster.html#ab29f63551ddeb032a91505d1c0b8ac41">endWrite</a>();</div>
|
|
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <a class="code" href="classRTC.html#ae667600d05c8e7b06a93574dd068a4d7">RTC::writeDate</a>(value);</div>
|
|
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  }</div>
|
|
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> }</div>
|
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<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> </div>
|
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<div class="line"><a name="l00230"></a><span class="lineno"><a class="line" href="classDS1307RTC.html#aab608eb1630520ee122306b721fdc47a"> 230</a></span> <span class="keywordtype">void</span> <a class="code" href="classDS1307RTC.html#aab608eb1630520ee122306b721fdc47a">DS1307RTC::readAlarm</a>(uint8_t alarmNum, <a class="code" href="structRTCAlarm.html">RTCAlarm</a> *value)</div>
|
|
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> {</div>
|
|
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordflow">if</span> (_isRealTime) {</div>
|
|
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  _bus-><a class="code" href="classI2CMaster.html#a01960fc821cb25e4c88c26d2c6107e35">startWrite</a>(DS1307_I2C_ADDRESS);</div>
|
|
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(DS1307_ALARMS + alarmNum * DS1307_ALARM_SIZE);</div>
|
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<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordflow">if</span> (_bus-><a class="code" href="classI2CMaster.html#a4e5f1a1a4c2242699be5a35fc4872fde">startRead</a>(DS1307_I2C_ADDRESS, 3)) {</div>
|
|
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  value-><a class="code" href="structRTCAlarm.html#a75bdc42acd3ab3ad495680c6b6a34692">hour</a> = fromBCD(_bus-><a class="code" href="classI2CMaster.html#a49eeebb57f6bc06de39973fe836369cd">read</a>());</div>
|
|
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  value-><a class="code" href="structRTCAlarm.html#ad9a75ceb4b4b3474baa66dd5466e62fe">minute</a> = fromBCD(_bus-><a class="code" href="classI2CMaster.html#a49eeebb57f6bc06de39973fe836369cd">read</a>());</div>
|
|
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  value-><a class="code" href="structRTCAlarm.html#a0f2ef7363cb60a26642d5295b77ca19e">flags</a> = _bus-><a class="code" href="classI2CMaster.html#a49eeebb57f6bc06de39973fe836369cd">read</a>();</div>
|
|
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="comment">// RTC chip is not responding.</span></div>
|
|
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  value-><a class="code" href="structRTCAlarm.html#a75bdc42acd3ab3ad495680c6b6a34692">hour</a> = 0;</div>
|
|
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  value-><a class="code" href="structRTCAlarm.html#ad9a75ceb4b4b3474baa66dd5466e62fe">minute</a> = 0;</div>
|
|
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  value-><a class="code" href="structRTCAlarm.html#a0f2ef7363cb60a26642d5295b77ca19e">flags</a> = 0;</div>
|
|
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  }</div>
|
|
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  } <span class="keywordflow">else</span> {</div>
|
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<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <a class="code" href="classRTC.html#ade282d7a60147c3f0269f1fcd59c8d66">RTC::readAlarm</a>(alarmNum, value);</div>
|
|
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  }</div>
|
|
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> }</div>
|
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<div class="line"><a name="l00249"></a><span class="lineno"> 249</span> </div>
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<div class="line"><a name="l00250"></a><span class="lineno"><a class="line" href="classDS1307RTC.html#a7354aed91d7c94d0d7b2144b1bf32c75"> 250</a></span> <span class="keywordtype">void</span> <a class="code" href="classDS1307RTC.html#a7354aed91d7c94d0d7b2144b1bf32c75">DS1307RTC::writeAlarm</a>(uint8_t alarmNum, <span class="keyword">const</span> <a class="code" href="structRTCAlarm.html">RTCAlarm</a> *value)</div>
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<div class="line"><a name="l00251"></a><span class="lineno"> 251</span> {</div>
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<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keywordflow">if</span> (_isRealTime) {</div>
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<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  _bus-><a class="code" href="classI2CMaster.html#a01960fc821cb25e4c88c26d2c6107e35">startWrite</a>(DS1307_I2C_ADDRESS);</div>
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<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(DS1307_ALARMS + alarmNum * DS1307_ALARM_SIZE);</div>
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<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(toBCD(value-><a class="code" href="structRTCAlarm.html#a75bdc42acd3ab3ad495680c6b6a34692">hour</a>));</div>
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<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(toBCD(value-><a class="code" href="structRTCAlarm.html#ad9a75ceb4b4b3474baa66dd5466e62fe">minute</a>));</div>
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<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(value-><a class="code" href="structRTCAlarm.html#a0f2ef7363cb60a26642d5295b77ca19e">flags</a>);</div>
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<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  _bus-><a class="code" href="classI2CMaster.html#ab29f63551ddeb032a91505d1c0b8ac41">endWrite</a>();</div>
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<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <a class="code" href="classRTC.html#a0e96c91efd9e7a6340effdae3eadf17e">RTC::writeAlarm</a>(alarmNum, value);</div>
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<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  }</div>
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<div class="line"><a name="l00262"></a><span class="lineno"> 262</span> }</div>
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<div class="line"><a name="l00263"></a><span class="lineno"> 263</span> </div>
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<div class="line"><a name="l00264"></a><span class="lineno"><a class="line" href="classDS1307RTC.html#a93c25269a9b78ab3331354db26672248"> 264</a></span> <span class="keywordtype">int</span> <a class="code" href="classDS1307RTC.html#a93c25269a9b78ab3331354db26672248">DS1307RTC::byteCount</a>()<span class="keyword"> const</span></div>
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<div class="line"><a name="l00265"></a><span class="lineno"> 265</span> <span class="keyword"></span>{</div>
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<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="keywordflow">return</span> DS1307_ALARMS - DS1307_NVRAM;</div>
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<div class="line"><a name="l00267"></a><span class="lineno"> 267</span> }</div>
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<div class="line"><a name="l00268"></a><span class="lineno"> 268</span> </div>
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<div class="line"><a name="l00269"></a><span class="lineno"><a class="line" href="classDS1307RTC.html#a7364609a201022688778ab116c3e4f4a"> 269</a></span> uint8_t <a class="code" href="classDS1307RTC.html#a7364609a201022688778ab116c3e4f4a">DS1307RTC::readByte</a>(uint8_t offset)</div>
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<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> {</div>
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<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <span class="keywordflow">if</span> (_isRealTime)</div>
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<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="keywordflow">return</span> readRegister(DS1307_NVRAM + offset);</div>
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<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="keywordflow">else</span></div>
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<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="keywordflow">return</span> <a class="code" href="classRTC.html#a0f47b10b436e3f9d36e04ec907579431">RTC::readByte</a>(offset);</div>
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<div class="line"><a name="l00275"></a><span class="lineno"> 275</span> }</div>
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<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> </div>
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<div class="line"><a name="l00277"></a><span class="lineno"><a class="line" href="classDS1307RTC.html#a6ef435fd4aa4adf8eefdf8b1741f5ba6"> 277</a></span> <span class="keywordtype">void</span> <a class="code" href="classDS1307RTC.html#a6ef435fd4aa4adf8eefdf8b1741f5ba6">DS1307RTC::writeByte</a>(uint8_t offset, uint8_t value)</div>
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<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> {</div>
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<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="keywordflow">if</span> (_isRealTime)</div>
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<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  writeRegister(DS1307_NVRAM + offset, value);</div>
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<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <span class="keywordflow">else</span></div>
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<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <a class="code" href="classRTC.html#a1cab6397ec04b1e2b3feea5b3cd1f749">RTC::writeByte</a>(offset, value);</div>
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<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> }</div>
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<div class="line"><a name="l00284"></a><span class="lineno"> 284</span> </div>
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<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> <span class="keywordtype">void</span> DS1307RTC::initAlarms()</div>
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<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> {</div>
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<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  uint8_t value = readRegister(DS1307_ALARM_MAGIC);</div>
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<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <span class="keywordflow">if</span> (value != (0xB0 + <a class="code" href="classRTC.html#aee5ae8f600ee5296e65635c0d836fca3">ALARM_COUNT</a>)) {</div>
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<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  <span class="comment">// This is the first time we have used this clock chip,</span></div>
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<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="comment">// so initialize all alarms to their default state.</span></div>
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<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  <a class="code" href="structRTCAlarm.html">RTCAlarm</a> alarm;</div>
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<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  alarm.<a class="code" href="structRTCAlarm.html#a75bdc42acd3ab3ad495680c6b6a34692">hour</a> = 6; <span class="comment">// Default to 6am for alarms.</span></div>
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<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  alarm.<a class="code" href="structRTCAlarm.html#ad9a75ceb4b4b3474baa66dd5466e62fe">minute</a> = 0;</div>
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<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  alarm.<a class="code" href="structRTCAlarm.html#a0f2ef7363cb60a26642d5295b77ca19e">flags</a> = 0;</div>
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<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <span class="keywordflow">for</span> (uint8_t index = 0; index < <a class="code" href="classRTC.html#aee5ae8f600ee5296e65635c0d836fca3">ALARM_COUNT</a>; ++index)</div>
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<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <a class="code" href="classDS1307RTC.html#a7354aed91d7c94d0d7b2144b1bf32c75">writeAlarm</a>(index, &alarm);</div>
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<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  writeRegister(DS1307_ALARM_MAGIC, 0xB0 + ALARM_COUNT);</div>
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<div class="line"><a name="l00298"></a><span class="lineno"> 298</span> </div>
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<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <span class="comment">// Also clear the rest of NVRAM so that it is in a known state.</span></div>
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<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="comment">// Otherwise we'll have whatever garbage was present at power-on.</span></div>
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<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  _bus-><a class="code" href="classI2CMaster.html#a01960fc821cb25e4c88c26d2c6107e35">startWrite</a>(DS1307_I2C_ADDRESS);</div>
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<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(DS1307_NVRAM);</div>
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<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  <span class="keywordflow">for</span> (uint8_t index = DS1307_NVRAM; index < DS1307_ALARMS; ++index)</div>
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<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(0);</div>
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<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  _bus-><a class="code" href="classI2CMaster.html#ab29f63551ddeb032a91505d1c0b8ac41">endWrite</a>();</div>
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<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  }</div>
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<div class="line"><a name="l00307"></a><span class="lineno"> 307</span> }</div>
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<div class="line"><a name="l00308"></a><span class="lineno"> 308</span> </div>
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<div class="line"><a name="l00309"></a><span class="lineno"> 309</span> uint8_t DS1307RTC::readRegister(uint8_t reg)</div>
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<div class="line"><a name="l00310"></a><span class="lineno"> 310</span> {</div>
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<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  _bus-><a class="code" href="classI2CMaster.html#a01960fc821cb25e4c88c26d2c6107e35">startWrite</a>(DS1307_I2C_ADDRESS);</div>
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<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(reg);</div>
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<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  <span class="keywordflow">if</span> (!_bus-><a class="code" href="classI2CMaster.html#a4e5f1a1a4c2242699be5a35fc4872fde">startRead</a>(DS1307_I2C_ADDRESS, 1))</div>
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<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  <span class="keywordflow">return</span> 0; <span class="comment">// RTC chip is not responding.</span></div>
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<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <span class="keywordflow">return</span> _bus-><a class="code" href="classI2CMaster.html#a49eeebb57f6bc06de39973fe836369cd">read</a>();</div>
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<div class="line"><a name="l00316"></a><span class="lineno"> 316</span> }</div>
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<div class="line"><a name="l00317"></a><span class="lineno"> 317</span> </div>
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<div class="line"><a name="l00318"></a><span class="lineno"> 318</span> <span class="keywordtype">bool</span> DS1307RTC::writeRegister(uint8_t reg, uint8_t value)</div>
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<div class="line"><a name="l00319"></a><span class="lineno"> 319</span> {</div>
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<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  _bus-><a class="code" href="classI2CMaster.html#a01960fc821cb25e4c88c26d2c6107e35">startWrite</a>(DS1307_I2C_ADDRESS);</div>
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<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(reg);</div>
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<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  _bus-><a class="code" href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">write</a>(value);</div>
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<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="keywordflow">return</span> _bus-><a class="code" href="classI2CMaster.html#ab29f63551ddeb032a91505d1c0b8ac41">endWrite</a>();</div>
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<div class="line"><a name="l00324"></a><span class="lineno"> 324</span> }</div>
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<div class="ttc" id="structRTCDate_html_a6e6196059b36186041a5312400ea9202"><div class="ttname"><a href="structRTCDate.html#a6e6196059b36186041a5312400ea9202">RTCDate::month</a></div><div class="ttdeci">uint8_t month</div><div class="ttdoc">Month of the year (1-12) </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8h_source.html#l00038">RTC.h:38</a></div></div>
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<div class="ttc" id="classRTC_html_a102e2ec15bf0273d8f7e9ce4b6dcc96e"><div class="ttname"><a href="classRTC.html#a102e2ec15bf0273d8f7e9ce4b6dcc96e">RTC::writeTime</a></div><div class="ttdeci">virtual void writeTime(const RTCTime *value)</div><div class="ttdoc">Updates the time in the realtime clock to match value. </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8cpp_source.html#l00179">RTC.cpp:179</a></div></div>
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<div class="ttc" id="structRTCTime_html_acf2161ca037080dc4b767e636ad8db84"><div class="ttname"><a href="structRTCTime.html#acf2161ca037080dc4b767e636ad8db84">RTCTime::minute</a></div><div class="ttdeci">uint8_t minute</div><div class="ttdoc">Minute within the hour (0-59) </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8h_source.html#l00031">RTC.h:31</a></div></div>
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<div class="ttc" id="classRTC_html_ade282d7a60147c3f0269f1fcd59c8d66"><div class="ttname"><a href="classRTC.html#ade282d7a60147c3f0269f1fcd59c8d66">RTC::readAlarm</a></div><div class="ttdeci">virtual void readAlarm(uint8_t alarmNum, RTCAlarm *value)</div><div class="ttdoc">Reads the details of the alarm with index alarmNum into value. </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8cpp_source.html#l00209">RTC.cpp:209</a></div></div>
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<div class="ttc" id="classRTC_html_aa1e21bf42ebd4456919744ae0f4f631e"><div class="ttname"><a href="classRTC.html#aa1e21bf42ebd4456919744ae0f4f631e">RTC::readDate</a></div><div class="ttdeci">virtual void readDate(RTCDate *value)</div><div class="ttdoc">Reads the current date from the realtime clock into value. </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8cpp_source.html#l00169">RTC.cpp:169</a></div></div>
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<div class="ttc" id="classDS1307RTC_html_acd9800d6df2244b8e4e790480a1d62a6"><div class="ttname"><a href="classDS1307RTC.html#acd9800d6df2244b8e4e790480a1d62a6">DS1307RTC::readTime</a></div><div class="ttdeci">void readTime(RTCTime *value)</div><div class="ttdoc">Reads the current time from the realtime clock into value. </div><div class="ttdef"><b>Definition:</b> <a href="DS1307RTC_8cpp_source.html#l00157">DS1307RTC.cpp:157</a></div></div>
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<div class="ttc" id="classDS1307RTC_html_a6fec8ff71f33cc1a129eb0bd009600b0"><div class="ttname"><a href="classDS1307RTC.html#a6fec8ff71f33cc1a129eb0bd009600b0">DS1307RTC::hasUpdates</a></div><div class="ttdeci">bool hasUpdates()</div><div class="ttdoc">Returns true if the realtime clock has updated since the last call to this function. </div><div class="ttdef"><b>Definition:</b> <a href="DS1307RTC_8cpp_source.html#l00118">DS1307RTC.cpp:118</a></div></div>
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<div class="ttc" id="classDS1307RTC_html_a7354aed91d7c94d0d7b2144b1bf32c75"><div class="ttname"><a href="classDS1307RTC.html#a7354aed91d7c94d0d7b2144b1bf32c75">DS1307RTC::writeAlarm</a></div><div class="ttdeci">void writeAlarm(uint8_t alarmNum, const RTCAlarm *value)</div><div class="ttdoc">Updates the details of the alarm with index alarmNum from value. </div><div class="ttdef"><b>Definition:</b> <a href="DS1307RTC_8cpp_source.html#l00250">DS1307RTC.cpp:250</a></div></div>
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<div class="ttc" id="classI2CMaster_html_a0bf6b84cb1e2b3a37a4a0260d0b6f960"><div class="ttname"><a href="classI2CMaster.html#a0bf6b84cb1e2b3a37a4a0260d0b6f960">I2CMaster::write</a></div><div class="ttdeci">virtual void write(uint8_t value)=0</div><div class="ttdoc">Writes a single byte value on the I2C bus. </div></div>
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<div class="ttc" id="classRTC_html_a0e96c91efd9e7a6340effdae3eadf17e"><div class="ttname"><a href="classRTC.html#a0e96c91efd9e7a6340effdae3eadf17e">RTC::writeAlarm</a></div><div class="ttdeci">virtual void writeAlarm(uint8_t alarmNum, const RTCAlarm *value)</div><div class="ttdoc">Updates the details of the alarm with index alarmNum from value. </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8cpp_source.html#l00224">RTC.cpp:224</a></div></div>
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<div class="ttc" id="classRTC_html_aee5ae8f600ee5296e65635c0d836fca3"><div class="ttname"><a href="classRTC.html#aee5ae8f600ee5296e65635c0d836fca3">RTC::ALARM_COUNT</a></div><div class="ttdeci">static const uint8_t ALARM_COUNT</div><div class="ttdoc">Number of alarms that are supported by RTC::readAlarm() and RTC::writeAlarm(). </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8h_source.html#l00077">RTC.h:77</a></div></div>
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<div class="ttc" id="classDS1307RTC_html_a0a5d0d86a0345420ebb289ea724b19e8"><div class="ttname"><a href="classDS1307RTC.html#a0a5d0d86a0345420ebb289ea724b19e8">DS1307RTC::writeTime</a></div><div class="ttdeci">void writeTime(const RTCTime *value)</div><div class="ttdoc">Updates the time in the realtime clock to match value. </div><div class="ttdef"><b>Definition:</b> <a href="DS1307RTC_8cpp_source.html#l00202">DS1307RTC.cpp:202</a></div></div>
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<div class="ttc" id="classRTC_html_ae667600d05c8e7b06a93574dd068a4d7"><div class="ttname"><a href="classRTC.html#ae667600d05c8e7b06a93574dd068a4d7">RTC::writeDate</a></div><div class="ttdeci">virtual void writeDate(const RTCDate *value)</div><div class="ttdoc">Updates the date in the realtime clock to match value. </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8cpp_source.html#l00194">RTC.cpp:194</a></div></div>
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<div class="ttc" id="classI2CMaster_html_a4e5f1a1a4c2242699be5a35fc4872fde"><div class="ttname"><a href="classI2CMaster.html#a4e5f1a1a4c2242699be5a35fc4872fde">I2CMaster::startRead</a></div><div class="ttdeci">virtual bool startRead(unsigned int address, unsigned int count)=0</div><div class="ttdoc">Starts a read operation for count bytes by sending the start condition and the I2C control byte...</div></div>
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<div class="ttc" id="structRTCAlarm_html_a75bdc42acd3ab3ad495680c6b6a34692"><div class="ttname"><a href="structRTCAlarm.html#a75bdc42acd3ab3ad495680c6b6a34692">RTCAlarm::hour</a></div><div class="ttdeci">uint8_t hour</div><div class="ttdoc">Hour of the day for the alarm (0-23). </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8h_source.html#l00046">RTC.h:46</a></div></div>
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<div class="ttc" id="structRTCAlarm_html_a0f2ef7363cb60a26642d5295b77ca19e"><div class="ttname"><a href="structRTCAlarm.html#a0f2ef7363cb60a26642d5295b77ca19e">RTCAlarm::flags</a></div><div class="ttdeci">uint8_t flags</div><div class="ttdoc">Additional flags for the alarm. </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8h_source.html#l00049">RTC.h:49</a></div></div>
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<div class="ttc" id="structRTCDate_html"><div class="ttname"><a href="structRTCDate.html">RTCDate</a></div><div class="ttdoc">Stores date information from a realtime clock chip. </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8h_source.html#l00035">RTC.h:35</a></div></div>
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<div class="ttc" id="classDS1307RTC_html_a6fb56d1690bc30e7995961a5b5e5fdc4"><div class="ttname"><a href="classDS1307RTC.html#a6fb56d1690bc30e7995961a5b5e5fdc4">DS1307RTC::readDate</a></div><div class="ttdeci">void readDate(RTCDate *value)</div><div class="ttdoc">Reads the current date from the realtime clock into value. </div><div class="ttdef"><b>Definition:</b> <a href="DS1307RTC_8cpp_source.html#l00177">DS1307RTC.cpp:177</a></div></div>
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<div class="ttc" id="classI2CMaster_html_a01960fc821cb25e4c88c26d2c6107e35"><div class="ttname"><a href="classI2CMaster.html#a01960fc821cb25e4c88c26d2c6107e35">I2CMaster::startWrite</a></div><div class="ttdeci">virtual void startWrite(unsigned int address)</div><div class="ttdoc">Starts a write operation by sending a start condition and the I2C control byte. </div></div>
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<div class="ttc" id="classI2CMaster_html_ab29f63551ddeb032a91505d1c0b8ac41"><div class="ttname"><a href="classI2CMaster.html#ab29f63551ddeb032a91505d1c0b8ac41">I2CMaster::endWrite</a></div><div class="ttdeci">virtual bool endWrite()=0</div><div class="ttdoc">Ends the current write operation. </div></div>
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<div class="ttc" id="structRTCDate_html_a7d31822daff3c3fc947386abd897732f"><div class="ttname"><a href="structRTCDate.html#a7d31822daff3c3fc947386abd897732f">RTCDate::year</a></div><div class="ttdeci">unsigned int year</div><div class="ttdoc">Year (4-digit) </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8h_source.html#l00037">RTC.h:37</a></div></div>
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<div class="ttc" id="classRTC_html_a1cab6397ec04b1e2b3feea5b3cd1f749"><div class="ttname"><a href="classRTC.html#a1cab6397ec04b1e2b3feea5b3cd1f749">RTC::writeByte</a></div><div class="ttdeci">virtual void writeByte(uint8_t offset, uint8_t value)</div><div class="ttdoc">Writes value to offset within the realtime clock's non-volatile memory. </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8cpp_source.html#l00262">RTC.cpp:262</a></div></div>
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<div class="ttc" id="structRTCAlarm_html_ad9a75ceb4b4b3474baa66dd5466e62fe"><div class="ttname"><a href="structRTCAlarm.html#ad9a75ceb4b4b3474baa66dd5466e62fe">RTCAlarm::minute</a></div><div class="ttdeci">uint8_t minute</div><div class="ttdoc">Minute of the hour for the alarm (0-59). </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8h_source.html#l00047">RTC.h:47</a></div></div>
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<div class="ttc" id="classRTC_html_a0f47b10b436e3f9d36e04ec907579431"><div class="ttname"><a href="classRTC.html#a0f47b10b436e3f9d36e04ec907579431">RTC::readByte</a></div><div class="ttdeci">virtual uint8_t readByte(uint8_t offset)</div><div class="ttdoc">Reads the byte at offset within the realtime clock's non-volatile memory. </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8cpp_source.html#l00247">RTC.cpp:247</a></div></div>
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<div class="ttc" id="structRTCTime_html"><div class="ttname"><a href="structRTCTime.html">RTCTime</a></div><div class="ttdoc">Stores time information from a realtime clock chip. </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8h_source.html#l00028">RTC.h:28</a></div></div>
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<div class="ttc" id="classI2CMaster_html"><div class="ttname"><a href="classI2CMaster.html">I2CMaster</a></div><div class="ttdoc">Abstract base class for I2C master implementations. </div><div class="ttdef"><b>Definition:</b> <a href="I2CMaster_8h_source.html#l00028">I2CMaster.h:28</a></div></div>
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<div class="ttc" id="classDS1307RTC_html_a4f7346be33612cf9ecd96080eb046230"><div class="ttname"><a href="classDS1307RTC.html#a4f7346be33612cf9ecd96080eb046230">DS1307RTC::writeDate</a></div><div class="ttdeci">void writeDate(const RTCDate *value)</div><div class="ttdoc">Updates the date in the realtime clock to match value. </div><div class="ttdef"><b>Definition:</b> <a href="DS1307RTC_8cpp_source.html#l00216">DS1307RTC.cpp:216</a></div></div>
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<div class="ttc" id="structRTCAlarm_html"><div class="ttname"><a href="structRTCAlarm.html">RTCAlarm</a></div><div class="ttdoc">Stores alarm information from a realtime clock chip. </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8h_source.html#l00042">RTC.h:42</a></div></div>
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<div class="ttc" id="classDS1307RTC_html_aab608eb1630520ee122306b721fdc47a"><div class="ttname"><a href="classDS1307RTC.html#aab608eb1630520ee122306b721fdc47a">DS1307RTC::readAlarm</a></div><div class="ttdeci">void readAlarm(uint8_t alarmNum, RTCAlarm *value)</div><div class="ttdoc">Reads the details of the alarm with index alarmNum into value. </div><div class="ttdef"><b>Definition:</b> <a href="DS1307RTC_8cpp_source.html#l00230">DS1307RTC.cpp:230</a></div></div>
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<div class="ttc" id="classDS1307RTC_html_a092805d75bea323dc4be062638bff866"><div class="ttname"><a href="classDS1307RTC.html#a092805d75bea323dc4be062638bff866">DS1307RTC::DS1307RTC</a></div><div class="ttdeci">DS1307RTC(I2CMaster &bus, uint8_t oneHzPin=255)</div><div class="ttdoc">Attaches to a realtime clock slave device on bus. </div><div class="ttdef"><b>Definition:</b> <a href="DS1307RTC_8cpp_source.html#l00083">DS1307RTC.cpp:83</a></div></div>
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<div class="ttc" id="classDS1307RTC_html_a93c25269a9b78ab3331354db26672248"><div class="ttname"><a href="classDS1307RTC.html#a93c25269a9b78ab3331354db26672248">DS1307RTC::byteCount</a></div><div class="ttdeci">int byteCount() const </div><div class="ttdoc">Returns the number of bytes of non-volatile memory that can be used for storage of arbitrary settings...</div><div class="ttdef"><b>Definition:</b> <a href="DS1307RTC_8cpp_source.html#l00264">DS1307RTC.cpp:264</a></div></div>
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<div class="ttc" id="classI2CMaster_html_a49eeebb57f6bc06de39973fe836369cd"><div class="ttname"><a href="classI2CMaster.html#a49eeebb57f6bc06de39973fe836369cd">I2CMaster::read</a></div><div class="ttdeci">virtual uint8_t read()=0</div><div class="ttdoc">Reads a single byte from the I2C bus. </div></div>
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<div class="ttc" id="classDS1307RTC_html_a7364609a201022688778ab116c3e4f4a"><div class="ttname"><a href="classDS1307RTC.html#a7364609a201022688778ab116c3e4f4a">DS1307RTC::readByte</a></div><div class="ttdeci">uint8_t readByte(uint8_t offset)</div><div class="ttdoc">Reads the byte at offset within the realtime clock's non-volatile memory. </div><div class="ttdef"><b>Definition:</b> <a href="DS1307RTC_8cpp_source.html#l00269">DS1307RTC.cpp:269</a></div></div>
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<div class="ttc" id="structRTCTime_html_a98ba717092ef856dd2b773ba02fcb1a4"><div class="ttname"><a href="structRTCTime.html#a98ba717092ef856dd2b773ba02fcb1a4">RTCTime::hour</a></div><div class="ttdeci">uint8_t hour</div><div class="ttdoc">Hour of the day (0-23) </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8h_source.html#l00030">RTC.h:30</a></div></div>
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<div class="ttc" id="structRTCDate_html_a2d68ff3fb90240df522b41222362704c"><div class="ttname"><a href="structRTCDate.html#a2d68ff3fb90240df522b41222362704c">RTCDate::day</a></div><div class="ttdeci">uint8_t day</div><div class="ttdoc">Day of the month (1-31) </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8h_source.html#l00039">RTC.h:39</a></div></div>
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<div class="ttc" id="structRTCTime_html_a87b7c02e535d808dcba04c77e34abb91"><div class="ttname"><a href="structRTCTime.html#a87b7c02e535d808dcba04c77e34abb91">RTCTime::second</a></div><div class="ttdeci">uint8_t second</div><div class="ttdoc">Second within the minute (0-59) </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8h_source.html#l00032">RTC.h:32</a></div></div>
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<div class="ttc" id="classRTC_html_aaf0a5c1f32f210a49718d148620b5bec"><div class="ttname"><a href="classRTC.html#aaf0a5c1f32f210a49718d148620b5bec">RTC::readTime</a></div><div class="ttdeci">virtual void readTime(RTCTime *value)</div><div class="ttdoc">Reads the current time from the realtime clock into value. </div><div class="ttdef"><b>Definition:</b> <a href="RTC_8cpp_source.html#l00144">RTC.cpp:144</a></div></div>
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<div class="ttc" id="classDS1307RTC_html_a6ef435fd4aa4adf8eefdf8b1741f5ba6"><div class="ttname"><a href="classDS1307RTC.html#a6ef435fd4aa4adf8eefdf8b1741f5ba6">DS1307RTC::writeByte</a></div><div class="ttdeci">void writeByte(uint8_t offset, uint8_t value)</div><div class="ttdoc">Writes value to offset within the realtime clock's non-volatile memory. </div><div class="ttdef"><b>Definition:</b> <a href="DS1307RTC_8cpp_source.html#l00277">DS1307RTC.cpp:277</a></div></div>
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