hoo2
/
utl

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.14"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>uTL: include/utl/com/i2c_bb.h Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript" src="navtreedata.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
  $(document).ready(initResizable);
/* @license-end */</script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/searchdata.js"></script>
<script type="text/javascript" src="search/search.js"></script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
 <tbody>
 <tr style="height: 56px;">
  <td id="projectalign" style="padding-left: 0.5em;">
   <div id="projectname">uTL
   </div>
   <div id="projectbrief">micro Template library</div>
  </td>
 </tr>
 </tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.14 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
var searchBox = new SearchBox("searchBox", "search",false,'Search');
/* @license-end */
</script>
<script type="text/javascript" src="menudata.js"></script>
<script type="text/javascript" src="menu.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
$(function() {
  initMenu('',true,false,'search.php','Search');
  $(document).ready(function() { init_search(); });
});
/* @license-end */</script>
<div id="main-nav"></div>
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
  <div id="nav-tree">
    <div id="nav-tree-contents">
      <div id="nav-sync" class="sync"></div>
    </div>
  </div>
  <div id="splitbar" style="-moz-user-select:none;" 
       class="ui-resizable-handle">
  </div>
</div>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
$(document).ready(function(){initNavTree('i2c__bb_8h_source.html','');});
/* @license-end */
</script>
<div id="doc-content">
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
     onmouseover="return searchBox.OnSearchSelectShow()"
     onmouseout="return searchBox.OnSearchSelectHide()"
     onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>

<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0" 
        name="MSearchResults" id="MSearchResults">
</iframe>
</div>

<div class="header">
  <div class="headertitle">
<div class="title">i2c_bb.h</div>  </div>
</div><!--header-->
<div class="contents">
<a href="i2c__bb_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;</div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#ifndef __utl_com_i2c_bb_h__</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#define __utl_com_i2c_bb_h__</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;</div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="impl_8h.html">utl/core/impl.h</a>&gt;</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="crtp_8h.html">utl/core/crtp.h</a>&gt;</span></div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="i2c_8h.html">utl/com/i2c.h</a>&gt;</span></div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;</div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceutl.html">utl</a> {</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;   <span class="keyword">template</span> &lt;<span class="keyword">typename</span> impl_t&gt;</div><div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i.html">   47</a></span>&#160;   <span class="keyword">class </span><a class="code" href="classutl_1_1i2c__bb__i.html">i2c_bb_i</a> : <span class="keyword">public</span> <a class="code" href="classutl_1_1i2c__i.html">i2c_i</a>&lt;i2c_bb_i&lt;impl_t&gt;&gt; {</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;      <a class="code" href="classutl_1_1i2c__bb__i.html#a5c9f28c59f87ebb8a937abb039e11150">_CRTP_IMPL</a>(impl_t);</div><div class="line"><a name="l00049"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i.html#a9932eded730c8f9a7b1d15988082b699">   49</a></span>&#160;      <span class="keyword">friend</span> <a class="code" href="classutl_1_1i2c__i.html">i2c_i&lt;i2c_bb_i&lt;impl_t&gt;</a>&gt;;</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;   <span class="keyword">public</span>:</div><div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i.html#a428c847d950993fa2cd005416edfb720">   52</a></span>&#160;      <span class="keyword">using</span> <a class="code" href="classutl_1_1i2c__bb__i.html">type</a>     = <a class="code" href="classutl_1_1i2c__bb__i.html">i2c_bb_i&lt;impl_t&gt;</a>;  </div><div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i.html#ad2872b7e17116f8379144488fe135052">   53</a></span>&#160;      <span class="keyword">using</span> <a class="code" href="classutl_1_1i2c__bb__i.html#ad2872b7e17116f8379144488fe135052">Sequence</a> = <span class="keyword">typename</span> <a class="code" href="classutl_1_1i2c__i.html#a7e2dde443c6c9bde4a2293beb22950c5">i2c_i&lt;type&gt;::Sequence</a>;</div><div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26d">   55</a></span>&#160;      <span class="keyword">enum class</span> <a class="code" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26d">SDAMode</a> {</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;         <a class="code" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26daa84cc046d48610b05c21fd3670d0c829">INPUT</a> =0,</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;         <a class="code" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26da50a87f0d71f7221582dad4bf507a0f34">OUTPUT</a></div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;      };</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;   <span class="keyword">protected</span>:</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;      <a class="code" href="classutl_1_1i2c__bb__i.html#ac2d9b97778a5dd57eb5e6425b4b0833c">~i2c_bb_i</a> () noexcept = default;</div><div class="line"><a name="l00068"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i.html#ab657379ca2e4b3624e2d4520542a9464">   68</a></span>&#160;      <a class="code" href="classutl_1_1i2c__bb__i.html">i2c_bb_i</a> (uint32_t clk) noexcept</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;            : <a class="code" href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">usec_</a> {1000000/(2*clk)} { }</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;   <span class="keyword">private</span>:</div><div class="line"><a name="l00085"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i.html#aa197be76016b82fd6f8b66875430d922">   85</a></span>&#160;      <span class="keywordtype">bool</span> <a class="code" href="classutl_1_1i2c__bb__i.html#aa197be76016b82fd6f8b66875430d922">SDA</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26d">SDAMode</a> mode, <span class="keywordtype">bool</span> st) { <span class="keywordflow">return</span> impl().SDA (mode, st); }</div><div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i.html#a0c9f7d9fc10ac2ceaef93cb6daf8a699">   86</a></span>&#160;      <span class="keywordtype">void</span> <a class="code" href="classutl_1_1i2c__bb__i.html#a0c9f7d9fc10ac2ceaef93cb6daf8a699">SCL</a> (uint8_t st)      { impl().SCL (st); }    </div><div class="line"><a name="l00087"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i.html#a18db1fab1be2aafbb2612242df2667f1">   87</a></span>&#160;      <span class="keywordtype">void</span> <a class="code" href="classutl_1_1i2c__bb__i.html#a18db1fab1be2aafbb2612242df2667f1">delay</a> (uint32_t usec) { impl().delay(usec); } </div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;   <span class="keyword">private</span>:</div><div class="line"><a name="l00095"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i.html#a1f491d6ccadce71fa6cc59eebc74e82f">   95</a></span>&#160;      uint32_t <a class="code" href="classutl_1_1i2c__bb__i.html#a1f491d6ccadce71fa6cc59eebc74e82f">_clock</a> ()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> 1000000/(2*<a class="code" href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">usec_</a>); }</div><div class="line"><a name="l00096"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i.html#aef4db6e89447b2f0921df5b291b86232">   96</a></span>&#160;      <span class="keywordtype">void</span> <a class="code" href="classutl_1_1i2c__bb__i.html#aef4db6e89447b2f0921df5b291b86232">_clock</a> (uint32_t c) { <a class="code" href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">usec_</a> = 1000000/(2*c); }</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;      <span class="keywordtype">void</span> <a class="code" href="classutl_1_1i2c__bb__i.html#a2f4df606609ef7465109990d9fc0f1da">_start</a> ();      </div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;      <span class="keywordtype">void</span> <a class="code" href="classutl_1_1i2c__bb__i.html#ade9235a9d8ccfd7233494631d66ba07e">_stop</a> ();       </div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;      <a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> <a class="code" href="classutl_1_1i2c__bb__i.html#a3a459ded18fe55460ae438e312c22110">_rx_data</a> (<span class="keywordtype">bool</span> ack, <a class="code" href="classutl_1_1i2c__bb__i.html#ad2872b7e17116f8379144488fe135052">Sequence</a> seq);</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;      <span class="keywordtype">bool</span>   <a class="code" href="classutl_1_1i2c__bb__i.html#a085e38e545049ac64cd745b08e0be18f">_tx_data</a> (<a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> byte, <a class="code" href="classutl_1_1i2c__bb__i.html#ad2872b7e17116f8379144488fe135052">Sequence</a> seq);</div><div class="line"><a name="l00102"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">  102</a></span>&#160;      uint32_t <a class="code" href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">usec_</a>;      </div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;   };</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;   <span class="comment">/*</span></div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;<span class="comment">    * ============= User functions ================</span></div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;<span class="comment">    */</span></div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;   <span class="keyword">template</span> &lt;<span class="keyword">typename</span> impl_t&gt;</div><div class="line"><a name="l00115"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i.html#a2f4df606609ef7465109990d9fc0f1da">  115</a></span>&#160;   <span class="keywordtype">void</span> <a class="code" href="classutl_1_1i2c__bb__i.html#a2f4df606609ef7465109990d9fc0f1da">i2c_bb_i&lt;impl_t&gt;::_start</a> (<span class="keywordtype">void</span>) {</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;      <span class="comment">//Initially set pins</span></div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;      SDA (SDAMode::OUTPUT, 1);</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;      SCL (1);</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;         delay (usec_);</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;      SDA (SDAMode::OUTPUT, 0);</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;         delay (usec_);</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;      SCL (0);  <span class="comment">//Clear Clock</span></div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;   }</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;   <span class="keyword">template</span> &lt;<span class="keyword">typename</span> impl_t&gt;</div><div class="line"><a name="l00131"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i.html#ade9235a9d8ccfd7233494631d66ba07e">  131</a></span>&#160;   <span class="keywordtype">void</span> <a class="code" href="classutl_1_1i2c__bb__i.html#ade9235a9d8ccfd7233494631d66ba07e">i2c_bb_i&lt;impl_t&gt;::_stop</a> (<span class="keywordtype">void</span>) {</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;      <span class="comment">//Stop bit Operation</span></div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;      SDA (SDAMode::OUTPUT, 0);</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;      SCL (0);</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;      SCL (1);</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;         delay (usec_);</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;      SDA (SDAMode::OUTPUT, 1);</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;         delay (usec_);</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;   }</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;   <span class="keyword">template</span> &lt;<span class="keyword">typename</span> impl_t&gt;</div><div class="line"><a name="l00154"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i.html#a3a459ded18fe55460ae438e312c22110">  154</a></span>&#160;   <a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> <a class="code" href="classutl_1_1i2c__bb__i.html#a3a459ded18fe55460ae438e312c22110">i2c_bb_i&lt;impl_t&gt;::_rx_data</a> (<span class="keywordtype">bool</span> ack, <a class="code" href="classutl_1_1i2c__bb__i.html#ad2872b7e17116f8379144488fe135052">Sequence</a> seq) {</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;      <a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> byte {0};</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;      <span class="comment">//Initial conditions</span></div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;      SCL (0);</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;      SDA (SDAMode::INPUT, 0);</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;      <span class="keywordflow">if</span> (seq == Sequence::BYTE || seq == Sequence::BYTEnACK) {</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;         <span class="comment">// read 8 data bits</span></div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;         <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=8 ; i!=0 ; --i) {</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;            byte &lt;&lt;= 1;</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;            SCL (1);</div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;               delay (usec_);</div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;            byte |= SDA (SDAMode::INPUT, 0);</div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;            SCL (0);</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;               delay (usec_);</div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;         }</div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;      }</div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;      <span class="keywordflow">if</span> (seq == Sequence::ACK || seq == Sequence::BYTEnACK) {</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;         SDA (SDAMode::OUTPUT, !ack);    <span class="comment">//Send (or not) ACK bit</span></div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;         SCL (1);</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;            delay (usec_);</div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;         SCL (0);       <span class="comment">// Keep the bus busy</span></div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;         SDA (SDAMode::OUTPUT, 0);</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;      }</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;      <span class="keywordflow">return</span> byte;</div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;   }</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;</div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;   <span class="keyword">template</span> &lt;<span class="keyword">typename</span> impl_t&gt;</div><div class="line"><a name="l00194"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i.html#a085e38e545049ac64cd745b08e0be18f">  194</a></span>&#160;   <span class="keywordtype">bool</span> <a class="code" href="classutl_1_1i2c__bb__i.html#a085e38e545049ac64cd745b08e0be18f">i2c_bb_i&lt;impl_t&gt;::_tx_data</a> (<a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> byte, <a class="code" href="classutl_1_1i2c__bb__i.html#ad2872b7e17116f8379144488fe135052">Sequence</a> seq) {</div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;      <span class="keywordtype">bool</span> ack {<span class="keyword">false</span>};</div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;      <span class="comment">//Initial conditions</span></div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;      SCL (0);</div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;      SDA (SDAMode::OUTPUT, 0);</div><div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;</div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;      <span class="keywordflow">if</span> (seq == Sequence::BYTE || seq == Sequence::BYTEnACK) {</div><div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;         <span class="comment">//Send 8 bit data</span></div><div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;         <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=8 ; i!=0 ; --i) {</div><div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;            <span class="comment">//Send MSB</span></div><div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;            SDA (SDAMode::OUTPUT, byte &amp; 0x80);</div><div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;            byte &lt;&lt;= 1;</div><div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;            SCL (1);</div><div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;               delay (usec_);</div><div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;            SCL (0);</div><div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;               delay (usec_);</div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;         }</div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;      }</div><div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;      <span class="keywordflow">if</span> (seq == Sequence::ACK || seq == Sequence::BYTEnACK) {</div><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;         <span class="comment">// Get ACK</span></div><div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;         SDA (SDAMode::INPUT, 0);</div><div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;         SCL (1);</div><div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;            delay (usec_);</div><div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;         ack = !SDA (SDAMode::INPUT, 0);</div><div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;         SCL (0);     <span class="comment">// Keep the bus busy</span></div><div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;            delay (usec_);</div><div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;         SDA (SDAMode::OUTPUT, 0);</div><div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;      }</div><div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;      <span class="keywordflow">return</span> ack;</div><div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;   }</div><div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;</div><div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;</div><div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;   <span class="keyword">template</span>&lt;&gt;</div><div class="line"><a name="l00234"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4.html">  234</a></span>&#160;   <span class="keyword">class </span><a class="code" href="classutl_1_1i2c__bb__i.html">i2c_bb_i</a>&lt;<a class="code" href="structutl_1_1virtual__tag.html">virtual_tag</a>&gt; : <span class="keyword">public</span> <a class="code" href="classutl_1_1i2c__i.html">i2c_i</a>&lt;virtual_tag&gt; {</div><div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;   <span class="keyword">public</span>:</div><div class="line"><a name="l00236"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4.html#abedad1f30e2c695d47a84dc68ff05897">  236</a></span>&#160;      <span class="keyword">using</span> <a class="code" href="classutl_1_1i2c__i_3_01virtual__tag_01_4.html">type</a>     = <a class="code" href="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4.html">i2c_bb_i&lt;virtual_tag&gt;</a>;   </div><div class="line"><a name="l00237"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4.html#af8c7ac3797343e39e7e052ec51aec232">  237</a></span>&#160;      <span class="keyword">using</span> <a class="code" href="classutl_1_1i2c__i_3_01virtual__tag_01_4.html#a260541de452a9a653162b8b109b26c09">Sequence</a> = <span class="keyword">typename</span> <a class="code" href="classutl_1_1i2c__i.html#a7e2dde443c6c9bde4a2293beb22950c5">i2c_i&lt;virtual_tag&gt;::Sequence</a>;</div><div class="line"><a name="l00239"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4.html#af4bc7eeeb830e49046a1033e9c79db7f">  239</a></span>&#160;      <span class="keyword">enum class</span> <a class="code" href="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4.html#af4bc7eeeb830e49046a1033e9c79db7f">SDAMode</a> {</div><div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;         <a class="code" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26daa84cc046d48610b05c21fd3670d0c829">INPUT</a> =0,</div><div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;         <a class="code" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26da50a87f0d71f7221582dad4bf507a0f34">OUTPUT</a></div><div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;      };</div><div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;</div><div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;   <span class="keyword">protected</span>:</div><div class="line"><a name="l00250"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4.html#a0c9341b2a60e9400523de0397c472a76">  250</a></span>&#160;      <a class="code" href="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4.html#a0c9341b2a60e9400523de0397c472a76">i2c_bb_i</a> (uint32_t clk) noexcept</div><div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;            : <a class="code" href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">usec_</a> {1000000/(2*clk)} { }</div><div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;      <span class="keyword">virtual</span> <a class="code" href="classutl_1_1i2c__bb__i.html#ac2d9b97778a5dd57eb5e6425b4b0833c">~i2c_bb_i</a> () noexcept  = default;</div><div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;</div><div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;   private:</div><div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;      virtual <span class="keywordtype">bool</span> <a class="code" href="classutl_1_1i2c__bb__i.html#aa197be76016b82fd6f8b66875430d922">SDA</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26d">SDAMode</a> mode, <span class="keywordtype">bool</span> st) =0;</div><div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;      virtual <span class="keywordtype">void</span> <a class="code" href="classutl_1_1i2c__bb__i.html#a0c9f7d9fc10ac2ceaef93cb6daf8a699">SCL</a> (<span class="keywordtype">bool</span> st) =0;            </div><div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;      virtual <span class="keywordtype">void</span> <a class="code" href="classutl_1_1i2c__bb__i.html#a18db1fab1be2aafbb2612242df2667f1">delay</a> (uint32_t usec) =0;    </div><div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;</div><div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;   private:</div><div class="line"><a name="l00276"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4.html#a0e05ef5f042a1642c9920dd5d7da34b4">  276</a></span>&#160;      uint32_t <a class="code" href="classutl_1_1i2c__bb__i.html#a1f491d6ccadce71fa6cc59eebc74e82f">_clock</a> () const final { <span class="keywordflow">return</span> 1000000/(2*<a class="code" href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">usec_</a>); }</div><div class="line"><a name="l00277"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4.html#a47e0f23aa64714a0a95c579994a84fcc">  277</a></span>&#160;      <span class="keywordtype">void</span> <a class="code" href="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4.html#a47e0f23aa64714a0a95c579994a84fcc">_clock</a> (uint32_t c) <span class="keyword">final</span> { <a class="code" href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">usec_</a> = 1000000/(2*c); }</div><div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;</div><div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;      <span class="keywordtype">void</span> <a class="code" href="classutl_1_1i2c__bb__i.html#a2f4df606609ef7465109990d9fc0f1da">_start</a> () final;</div><div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;      <span class="keywordtype">void</span> <a class="code" href="classutl_1_1i2c__bb__i.html#ade9235a9d8ccfd7233494631d66ba07e">_stop</a> () final;</div><div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;      <a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> <a class="code" href="classutl_1_1i2c__bb__i.html#a3a459ded18fe55460ae438e312c22110">_rx_data</a> (<span class="keywordtype">bool</span> ack, <a class="code" href="classutl_1_1i2c__bb__i.html#ad2872b7e17116f8379144488fe135052">Sequence</a> seq) final;</div><div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;      <span class="keywordtype">bool</span> <a class="code" href="classutl_1_1i2c__bb__i.html#a085e38e545049ac64cd745b08e0be18f">_tx_data</a> (<a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> byte, <a class="code" href="classutl_1_1i2c__bb__i.html#ad2872b7e17116f8379144488fe135052">Sequence</a> seq) final;</div><div class="line"><a name="l00284"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4.html#aa3e73dad28462bf6d8c132ddfeb3a390">  284</a></span>&#160;      uint32_t <a class="code" href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">usec_</a>;</div><div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;   };</div><div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;</div><div class="line"><a name="l00293"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4.html#acf1d49b23e9c7b1c42cd43296b8b171c">  293</a></span>&#160;   <span class="keywordtype">void</span> <a class="code" href="classutl_1_1i2c__bb__i.html">i2c_bb_i</a>&lt;<a class="code" href="structutl_1_1virtual__tag.html">virtual_tag</a>&gt;::<a class="code" href="classutl_1_1i2c__bb__i.html#a2f4df606609ef7465109990d9fc0f1da">_start</a> (<span class="keywordtype">void</span>) {</div><div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;      <span class="comment">//Initially set pins</span></div><div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;      <a class="code" href="classutl_1_1i2c__bb__i.html#aa197be76016b82fd6f8b66875430d922">SDA</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26da50a87f0d71f7221582dad4bf507a0f34">SDAMode::OUTPUT</a>, 1);</div><div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;      <a class="code" href="classutl_1_1i2c__bb__i.html#a0c9f7d9fc10ac2ceaef93cb6daf8a699">SCL</a> (1);</div><div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;         <a class="code" href="classutl_1_1i2c__bb__i.html#a18db1fab1be2aafbb2612242df2667f1">delay</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">usec_</a>);</div><div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;      <a class="code" href="classutl_1_1i2c__bb__i.html#aa197be76016b82fd6f8b66875430d922">SDA</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26da50a87f0d71f7221582dad4bf507a0f34">SDAMode::OUTPUT</a>, 0);</div><div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;         <a class="code" href="classutl_1_1i2c__bb__i.html#a18db1fab1be2aafbb2612242df2667f1">delay</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">usec_</a>);</div><div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;      <a class="code" href="classutl_1_1i2c__bb__i.html#a0c9f7d9fc10ac2ceaef93cb6daf8a699">SCL</a> (0);  <span class="comment">//Clear Clock</span></div><div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;   }</div><div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;</div><div class="line"><a name="l00308"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4.html#acee317f97c201b10680c89ed1a64f694">  308</a></span>&#160;   <span class="keywordtype">void</span> <a class="code" href="classutl_1_1i2c__bb__i.html#ade9235a9d8ccfd7233494631d66ba07e">i2c_bb_i&lt;virtual_tag&gt;::_stop</a> (<span class="keywordtype">void</span>) {</div><div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;      <span class="comment">//Stop bit Operation</span></div><div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;      <a class="code" href="classutl_1_1i2c__bb__i.html#aa197be76016b82fd6f8b66875430d922">SDA</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26da50a87f0d71f7221582dad4bf507a0f34">SDAMode::OUTPUT</a>, 0);</div><div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;      <a class="code" href="classutl_1_1i2c__bb__i.html#a0c9f7d9fc10ac2ceaef93cb6daf8a699">SCL</a> (0);</div><div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;      <a class="code" href="classutl_1_1i2c__bb__i.html#a0c9f7d9fc10ac2ceaef93cb6daf8a699">SCL</a> (1);</div><div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;         <a class="code" href="classutl_1_1i2c__bb__i.html#a18db1fab1be2aafbb2612242df2667f1">delay</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">usec_</a>);</div><div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;      <a class="code" href="classutl_1_1i2c__bb__i.html#aa197be76016b82fd6f8b66875430d922">SDA</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26da50a87f0d71f7221582dad4bf507a0f34">SDAMode::OUTPUT</a>, 1);</div><div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;         <a class="code" href="classutl_1_1i2c__bb__i.html#a18db1fab1be2aafbb2612242df2667f1">delay</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">usec_</a>);</div><div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;   }</div><div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;</div><div class="line"><a name="l00330"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4.html#abb3eda6549482ff538f2b536d67752ed">  330</a></span>&#160;   <a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> <a class="code" href="classutl_1_1i2c__bb__i.html#a3a459ded18fe55460ae438e312c22110">i2c_bb_i&lt;virtual_tag&gt;::_rx_data</a> (<span class="keywordtype">bool</span> ack, <a class="code" href="classutl_1_1i2c__i_3_01virtual__tag_01_4.html#a260541de452a9a653162b8b109b26c09">Sequence</a> seq) {</div><div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;      <a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> byte {0};</div><div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;      <span class="comment">//Initial conditions</span></div><div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;      <a class="code" href="classutl_1_1i2c__bb__i.html#a0c9f7d9fc10ac2ceaef93cb6daf8a699">SCL</a> (0);</div><div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;      <a class="code" href="classutl_1_1i2c__bb__i.html#aa197be76016b82fd6f8b66875430d922">SDA</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26daa84cc046d48610b05c21fd3670d0c829">SDAMode::INPUT</a>, 0);</div><div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;</div><div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;      <span class="keywordflow">if</span> (seq == Sequence::BYTE || seq == Sequence::BYTEnACK) {</div><div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;         <span class="comment">// read 8 data bits</span></div><div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;         <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=8 ; i!=0 ; --i) {</div><div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;            byte &lt;&lt;= 1;</div><div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;            <a class="code" href="classutl_1_1i2c__bb__i.html#a0c9f7d9fc10ac2ceaef93cb6daf8a699">SCL</a> (1);</div><div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;               <a class="code" href="classutl_1_1i2c__bb__i.html#a18db1fab1be2aafbb2612242df2667f1">delay</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">usec_</a>);</div><div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;            byte |= <a class="code" href="classutl_1_1i2c__bb__i.html#aa197be76016b82fd6f8b66875430d922">SDA</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26daa84cc046d48610b05c21fd3670d0c829">SDAMode::INPUT</a>, 0);</div><div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;            <a class="code" href="classutl_1_1i2c__bb__i.html#a0c9f7d9fc10ac2ceaef93cb6daf8a699">SCL</a> (0);</div><div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;               <a class="code" href="classutl_1_1i2c__bb__i.html#a18db1fab1be2aafbb2612242df2667f1">delay</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">usec_</a>);</div><div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;         }</div><div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;      }</div><div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;      <span class="keywordflow">if</span> (seq == Sequence::ACK || seq == Sequence::BYTEnACK) {</div><div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;         <a class="code" href="classutl_1_1i2c__bb__i.html#aa197be76016b82fd6f8b66875430d922">SDA</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26da50a87f0d71f7221582dad4bf507a0f34">SDAMode::OUTPUT</a>, !ack);    <span class="comment">//Send (or not) ACK bit</span></div><div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;         <a class="code" href="classutl_1_1i2c__bb__i.html#a0c9f7d9fc10ac2ceaef93cb6daf8a699">SCL</a> (1);</div><div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;            <a class="code" href="classutl_1_1i2c__bb__i.html#a18db1fab1be2aafbb2612242df2667f1">delay</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">usec_</a>);</div><div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;         <a class="code" href="classutl_1_1i2c__bb__i.html#a0c9f7d9fc10ac2ceaef93cb6daf8a699">SCL</a> (0);       <span class="comment">// Keep the bus busy</span></div><div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;         <a class="code" href="classutl_1_1i2c__bb__i.html#aa197be76016b82fd6f8b66875430d922">SDA</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26da50a87f0d71f7221582dad4bf507a0f34">SDAMode::OUTPUT</a>, 0);</div><div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;      }</div><div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;      <span class="keywordflow">return</span> byte;</div><div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;   }</div><div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;</div><div class="line"><a name="l00369"></a><span class="lineno"><a class="line" href="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4.html#abbc42b60004046048a2ac6fd312188a6">  369</a></span>&#160;   <span class="keywordtype">bool</span> <a class="code" href="classutl_1_1i2c__bb__i.html#a085e38e545049ac64cd745b08e0be18f">i2c_bb_i&lt;virtual_tag&gt;::_tx_data</a> (<a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> byte, <a class="code" href="classutl_1_1i2c__i_3_01virtual__tag_01_4.html#a260541de452a9a653162b8b109b26c09">Sequence</a> seq) {</div><div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;      <span class="keywordtype">bool</span> ack {<span class="keyword">false</span>};</div><div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;      <span class="comment">//Initial conditions</span></div><div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;      <a class="code" href="classutl_1_1i2c__bb__i.html#a0c9f7d9fc10ac2ceaef93cb6daf8a699">SCL</a> (0);</div><div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;      <a class="code" href="classutl_1_1i2c__bb__i.html#aa197be76016b82fd6f8b66875430d922">SDA</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26da50a87f0d71f7221582dad4bf507a0f34">SDAMode::OUTPUT</a>, 0);</div><div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;</div><div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;      <span class="keywordflow">if</span> (seq == Sequence::BYTE || seq == Sequence::BYTEnACK) {</div><div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;         <span class="comment">//Send 8 bit data</span></div><div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;         <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=8 ; i!=0 ; --i) {</div><div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;            <span class="comment">//Send MSB</span></div><div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;            <a class="code" href="classutl_1_1i2c__bb__i.html#aa197be76016b82fd6f8b66875430d922">SDA</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26da50a87f0d71f7221582dad4bf507a0f34">SDAMode::OUTPUT</a>, byte &amp; 0x80);</div><div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;            byte &lt;&lt;= 1;</div><div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;            <a class="code" href="classutl_1_1i2c__bb__i.html#a0c9f7d9fc10ac2ceaef93cb6daf8a699">SCL</a> (1);</div><div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;               <a class="code" href="classutl_1_1i2c__bb__i.html#a18db1fab1be2aafbb2612242df2667f1">delay</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">usec_</a>);</div><div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;            <a class="code" href="classutl_1_1i2c__bb__i.html#a0c9f7d9fc10ac2ceaef93cb6daf8a699">SCL</a> (0);</div><div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;               <a class="code" href="classutl_1_1i2c__bb__i.html#a18db1fab1be2aafbb2612242df2667f1">delay</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">usec_</a>);</div><div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;         }</div><div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;      }</div><div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;      <span class="keywordflow">if</span> (seq == Sequence::ACK || seq == Sequence::BYTEnACK) {</div><div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;         <span class="comment">// Get ACK</span></div><div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;         <a class="code" href="classutl_1_1i2c__bb__i.html#aa197be76016b82fd6f8b66875430d922">SDA</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26daa84cc046d48610b05c21fd3670d0c829">SDAMode::INPUT</a>, 0);</div><div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;         <a class="code" href="classutl_1_1i2c__bb__i.html#a0c9f7d9fc10ac2ceaef93cb6daf8a699">SCL</a> (1);</div><div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;            <a class="code" href="classutl_1_1i2c__bb__i.html#a18db1fab1be2aafbb2612242df2667f1">delay</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">usec_</a>);</div><div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;         ack = !<a class="code" href="classutl_1_1i2c__bb__i.html#aa197be76016b82fd6f8b66875430d922">SDA</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26daa84cc046d48610b05c21fd3670d0c829">SDAMode::INPUT</a>, 0);</div><div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;         <a class="code" href="classutl_1_1i2c__bb__i.html#a0c9f7d9fc10ac2ceaef93cb6daf8a699">SCL</a> (0);     <span class="comment">// Keep the bus busy</span></div><div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;            <a class="code" href="classutl_1_1i2c__bb__i.html#a18db1fab1be2aafbb2612242df2667f1">delay</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">usec_</a>);</div><div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;         <a class="code" href="classutl_1_1i2c__bb__i.html#aa197be76016b82fd6f8b66875430d922">SDA</a> (<a class="code" href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26da50a87f0d71f7221582dad4bf507a0f34">SDAMode::OUTPUT</a>, 0);</div><div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;      }</div><div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;      <span class="keywordflow">return</span> ack;</div><div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;   }</div><div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;</div><div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;}  <span class="comment">// namspace utl</span></div><div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;</div><div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;<span class="preprocessor">#endif   // #ifndef __utl_com_i2c_bb_h__</span></div><div class="ttc" id="classutl_1_1i2c__bb__i_html_ad2872b7e17116f8379144488fe135052"><div class="ttname"><a href="classutl_1_1i2c__bb__i.html#ad2872b7e17116f8379144488fe135052">utl::i2c_bb_i::Sequence</a></div><div class="ttdeci">typename i2c_i&lt; type &gt;::Sequence Sequence</div><div class="ttdef"><b>Definition:</b> <a href="i2c__bb_8h_source.html#l00053">i2c_bb.h:53</a></div></div>
<div class="ttc" id="classutl_1_1i2c__bb__i_html_a8bd3726104fc91eb8f283d7ffec71cee"><div class="ttname"><a href="classutl_1_1i2c__bb__i.html#a8bd3726104fc91eb8f283d7ffec71cee">utl::i2c_bb_i::usec_</a></div><div class="ttdeci">uint32_t usec_</div><div class="ttdef"><b>Definition:</b> <a href="i2c__bb_8h_source.html#l00102">i2c_bb.h:102</a></div></div>
<div class="ttc" id="classutl_1_1i2c__bb__i_html_a4369b434fde250d503bfdc07d5c6a26da50a87f0d71f7221582dad4bf507a0f34"><div class="ttname"><a href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26da50a87f0d71f7221582dad4bf507a0f34">utl::i2c_bb_i::SDAMode::OUTPUT</a></div></div>
<div class="ttc" id="classutl_1_1i2c__bb__i_html_a2f4df606609ef7465109990d9fc0f1da"><div class="ttname"><a href="classutl_1_1i2c__bb__i.html#a2f4df606609ef7465109990d9fc0f1da">utl::i2c_bb_i::_start</a></div><div class="ttdeci">void _start()</div><div class="ttdoc">Send start functionality. </div><div class="ttdef"><b>Definition:</b> <a href="i2c__bb_8h_source.html#l00115">i2c_bb.h:115</a></div></div>
<div class="ttc" id="classutl_1_1i2c__i_html"><div class="ttname"><a href="classutl_1_1i2c__i.html">utl::i2c_i</a></div><div class="ttdoc">Abstract base class for i2c bus. </div><div class="ttdef"><b>Definition:</b> <a href="i2c_8h_source.html#l00043">i2c.h:43</a></div></div>
<div class="ttc" id="classutl_1_1i2c__bb__i_html_aa197be76016b82fd6f8b66875430d922"><div class="ttname"><a href="classutl_1_1i2c__bb__i.html#aa197be76016b82fd6f8b66875430d922">utl::i2c_bb_i::SDA</a></div><div class="ttdeci">bool SDA(SDAMode mode, bool st)</div><div class="ttdef"><b>Definition:</b> <a href="i2c__bb_8h_source.html#l00085">i2c_bb.h:85</a></div></div>
<div class="ttc" id="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4_html_af4bc7eeeb830e49046a1033e9c79db7f"><div class="ttname"><a href="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4.html#af4bc7eeeb830e49046a1033e9c79db7f">utl::i2c_bb_i&lt; virtual_tag &gt;::SDAMode</a></div><div class="ttdeci">SDAMode</div><div class="ttdoc">SDA pin direction enumerator. </div><div class="ttdef"><b>Definition:</b> <a href="i2c__bb_8h_source.html#l00239">i2c_bb.h:239</a></div></div>
<div class="ttc" id="classutl_1_1i2c__bb__i_html_a5c9f28c59f87ebb8a937abb039e11150"><div class="ttname"><a href="classutl_1_1i2c__bb__i.html#a5c9f28c59f87ebb8a937abb039e11150">utl::i2c_bb_i::_CRTP_IMPL</a></div><div class="ttdeci">_CRTP_IMPL(impl_t)</div></div>
<div class="ttc" id="classutl_1_1i2c__i_3_01virtual__tag_01_4_html"><div class="ttname"><a href="classutl_1_1i2c__i_3_01virtual__tag_01_4.html">utl::i2c_i&lt; virtual_tag &gt;</a></div><div class="ttdoc">A virtual base class specialization. </div><div class="ttdef"><b>Definition:</b> <a href="i2c_8h_source.html#l00140">i2c.h:140</a></div></div>
<div class="ttc" id="classutl_1_1i2c__bb__i_html_a3a459ded18fe55460ae438e312c22110"><div class="ttname"><a href="classutl_1_1i2c__bb__i.html#a3a459ded18fe55460ae438e312c22110">utl::i2c_bb_i::_rx_data</a></div><div class="ttdeci">byte_t _rx_data(bool ack, Sequence seq)</div><div class="ttdoc">Receive a byte from the i2c bus. </div><div class="ttdef"><b>Definition:</b> <a href="i2c__bb_8h_source.html#l00154">i2c_bb.h:154</a></div></div>
<div class="ttc" id="crtp_8h_html"><div class="ttname"><a href="crtp_8h.html">crtp.h</a></div></div>
<div class="ttc" id="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4_html_a47e0f23aa64714a0a95c579994a84fcc"><div class="ttname"><a href="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4.html#a47e0f23aa64714a0a95c579994a84fcc">utl::i2c_bb_i&lt; virtual_tag &gt;::_clock</a></div><div class="ttdeci">void _clock(uint32_t c) final</div><div class="ttdoc">set clock frequency of the bus [Hz] </div><div class="ttdef"><b>Definition:</b> <a href="i2c__bb_8h_source.html#l00277">i2c_bb.h:277</a></div></div>
<div class="ttc" id="classutl_1_1i2c__bb__i_html_a1f491d6ccadce71fa6cc59eebc74e82f"><div class="ttname"><a href="classutl_1_1i2c__bb__i.html#a1f491d6ccadce71fa6cc59eebc74e82f">utl::i2c_bb_i::_clock</a></div><div class="ttdeci">uint32_t _clock() const</div><div class="ttdef"><b>Definition:</b> <a href="i2c__bb_8h_source.html#l00095">i2c_bb.h:95</a></div></div>
<div class="ttc" id="classutl_1_1i2c__bb__i_html_ade9235a9d8ccfd7233494631d66ba07e"><div class="ttname"><a href="classutl_1_1i2c__bb__i.html#ade9235a9d8ccfd7233494631d66ba07e">utl::i2c_bb_i::_stop</a></div><div class="ttdeci">void _stop()</div><div class="ttdoc">Send stop functionality. </div><div class="ttdef"><b>Definition:</b> <a href="i2c__bb_8h_source.html#l00131">i2c_bb.h:131</a></div></div>
<div class="ttc" id="classutl_1_1i2c__bb__i_html_a085e38e545049ac64cd745b08e0be18f"><div class="ttname"><a href="classutl_1_1i2c__bb__i.html#a085e38e545049ac64cd745b08e0be18f">utl::i2c_bb_i::_tx_data</a></div><div class="ttdeci">bool _tx_data(byte_t byte, Sequence seq)</div><div class="ttdoc">Transmit a byte to the i2c bus. </div><div class="ttdef"><b>Definition:</b> <a href="i2c__bb_8h_source.html#l00194">i2c_bb.h:194</a></div></div>
<div class="ttc" id="classutl_1_1i2c__bb__i_html_aef4db6e89447b2f0921df5b291b86232"><div class="ttname"><a href="classutl_1_1i2c__bb__i.html#aef4db6e89447b2f0921df5b291b86232">utl::i2c_bb_i::_clock</a></div><div class="ttdeci">void _clock(uint32_t c)</div><div class="ttdef"><b>Definition:</b> <a href="i2c__bb_8h_source.html#l00096">i2c_bb.h:96</a></div></div>
<div class="ttc" id="classutl_1_1i2c__bb__i_html_a4369b434fde250d503bfdc07d5c6a26d"><div class="ttname"><a href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26d">utl::i2c_bb_i::SDAMode</a></div><div class="ttdeci">SDAMode</div><div class="ttdoc">SDA pin direction enumerator. </div><div class="ttdef"><b>Definition:</b> <a href="i2c__bb_8h_source.html#l00055">i2c_bb.h:55</a></div></div>
<div class="ttc" id="classutl_1_1i2c__bb__i_html_a4369b434fde250d503bfdc07d5c6a26daa84cc046d48610b05c21fd3670d0c829"><div class="ttname"><a href="classutl_1_1i2c__bb__i.html#a4369b434fde250d503bfdc07d5c6a26daa84cc046d48610b05c21fd3670d0c829">utl::i2c_bb_i::SDAMode::INPUT</a></div></div>
<div class="ttc" id="namespaceutl_html"><div class="ttname"><a href="namespaceutl.html">utl</a></div><div class="ttdoc">STL&amp;#39;s core language concepts. </div><div class="ttdef"><b>Definition:</b> <a href="__1wire_8h_source.html#l00030">_1wire.h:30</a></div></div>
<div class="ttc" id="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4_html_a0c9341b2a60e9400523de0397c472a76"><div class="ttname"><a href="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4.html#a0c9341b2a60e9400523de0397c472a76">utl::i2c_bb_i&lt; virtual_tag &gt;::i2c_bb_i</a></div><div class="ttdeci">i2c_bb_i(uint32_t clk) noexcept</div><div class="ttdoc">Constructor. </div><div class="ttdef"><b>Definition:</b> <a href="i2c__bb_8h_source.html#l00250">i2c_bb.h:250</a></div></div>
<div class="ttc" id="classutl_1_1i2c__i_html_a7e2dde443c6c9bde4a2293beb22950c5"><div class="ttname"><a href="classutl_1_1i2c__i.html#a7e2dde443c6c9bde4a2293beb22950c5">utl::i2c_i::Sequence</a></div><div class="ttdeci">Sequence</div><div class="ttdoc">I2C transmit/receive sequence. </div><div class="ttdef"><b>Definition:</b> <a href="i2c_8h_source.html#l00049">i2c.h:49</a></div></div>
<div class="ttc" id="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4_html"><div class="ttname"><a href="classutl_1_1i2c__bb__i_3_01virtual__tag_01_4.html">utl::i2c_bb_i&lt; virtual_tag &gt;</a></div><div class="ttdoc">A virtual base class interface specialization. Using the private virtual interface we provide the int...</div><div class="ttdef"><b>Definition:</b> <a href="i2c__bb_8h_source.html#l00234">i2c_bb.h:234</a></div></div>
<div class="ttc" id="classutl_1_1i2c__bb__i_html"><div class="ttname"><a href="classutl_1_1i2c__bb__i.html">utl::i2c_bb_i</a></div><div class="ttdoc">A bit banking implementation of i2c bus inherited from i2c_i base class. </div><div class="ttdef"><b>Definition:</b> <a href="i2c__bb_8h_source.html#l00047">i2c_bb.h:47</a></div></div>
<div class="ttc" id="namespaceutl_html_a1427cb5a2b13313147a902173b91e3c1"><div class="ttname"><a href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">utl::byte_t</a></div><div class="ttdeci">uint8_t byte_t</div><div class="ttdoc">8 bits wide </div><div class="ttdef"><b>Definition:</b> <a href="types_8h_source.html#l00031">types.h:31</a></div></div>
<div class="ttc" id="structutl_1_1virtual__tag_html"><div class="ttname"><a href="structutl_1_1virtual__tag.html">utl::virtual_tag</a></div><div class="ttdoc">virtual support tag type </div><div class="ttdef"><b>Definition:</b> <a href="crtp_8h_source.html#l00040">crtp.h:40</a></div></div>
<div class="ttc" id="classutl_1_1i2c__bb__i_html_a18db1fab1be2aafbb2612242df2667f1"><div class="ttname"><a href="classutl_1_1i2c__bb__i.html#a18db1fab1be2aafbb2612242df2667f1">utl::i2c_bb_i::delay</a></div><div class="ttdeci">void delay(uint32_t usec)</div><div class="ttdef"><b>Definition:</b> <a href="i2c__bb_8h_source.html#l00087">i2c_bb.h:87</a></div></div>
<div class="ttc" id="classutl_1_1i2c__i_3_01virtual__tag_01_4_html_a260541de452a9a653162b8b109b26c09"><div class="ttname"><a href="classutl_1_1i2c__i_3_01virtual__tag_01_4.html#a260541de452a9a653162b8b109b26c09">utl::i2c_i&lt; virtual_tag &gt;::Sequence</a></div><div class="ttdeci">Sequence</div><div class="ttdoc">I2C transmit/receive sequence. </div><div class="ttdef"><b>Definition:</b> <a href="i2c_8h_source.html#l00145">i2c.h:145</a></div></div>
<div class="ttc" id="classutl_1_1i2c__bb__i_html_ac2d9b97778a5dd57eb5e6425b4b0833c"><div class="ttname"><a href="classutl_1_1i2c__bb__i.html#ac2d9b97778a5dd57eb5e6425b4b0833c">utl::i2c_bb_i::~i2c_bb_i</a></div><div class="ttdeci">~i2c_bb_i() noexcept=default</div><div class="ttdoc">A default destructor, allow destructor from derived only. </div></div>
<div class="ttc" id="impl_8h_html"><div class="ttname"><a href="impl_8h.html">impl.h</a></div><div class="ttdoc">Implementation detail main forward header. </div></div>
<div class="ttc" id="classutl_1_1i2c__bb__i_html_a0c9f7d9fc10ac2ceaef93cb6daf8a699"><div class="ttname"><a href="classutl_1_1i2c__bb__i.html#a0c9f7d9fc10ac2ceaef93cb6daf8a699">utl::i2c_bb_i::SCL</a></div><div class="ttdeci">void SCL(uint8_t st)</div><div class="ttdoc">Implementers&amp;#39;s scl pin function. </div><div class="ttdef"><b>Definition:</b> <a href="i2c__bb_8h_source.html#l00086">i2c_bb.h:86</a></div></div>
<div class="ttc" id="i2c_8h_html"><div class="ttname"><a href="i2c_8h.html">i2c.h</a></div><div class="ttdoc">An Abstract base class interface for the i2c bus. </div></div>
</div><!-- fragment --></div><!-- contents -->
</div><!-- doc-content -->
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
  <ul>
    <li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_82754f54d9380477ef02477185c1f103.html">utl</a></li><li class="navelem"><a class="el" href="dir_b2ad3c1a6521a4924fa9194d98c323e2.html">com</a></li><li class="navelem"><a class="el" href="i2c__bb_8h.html">i2c_bb.h</a></li>
    <li class="footer">Generated by
    <a href="http://www.doxygen.org/index.html">
    <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.14 </li>
  </ul>
</div>
</body>
</html>