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Micro template library A library for building device drivers
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  93. <a href="spi_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="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor">#ifndef _utl_com_spi_h__</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#define _utl_com_spi_h__</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;</div><div class="line"><a name="l00024"></a><span class="lineno">   24</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="l00025"></a><span class="lineno">   25</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="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="meta_8h.html">utl/meta/meta.h</a>&gt;</span></div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;</div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceutl.html">utl</a> {</div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;</div><div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="namespaceutl_1_1spi.html">   36</a></span>&#160;   <span class="keyword">namespace </span>spi {</div><div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="namespaceutl_1_1spi.html#aed6b713381c193c598572ebac0b284cc">   40</a></span>&#160;      <span class="keyword">enum class</span> <a class="code" href="namespaceutl_1_1spi.html#aed6b713381c193c598572ebac0b284cc">bitOrder</a> {</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;         <a class="code" href="namespaceutl_1_1spi.html#aed6b713381c193c598572ebac0b284cca6db67adee32c3bd4ff03acf3244e1b4b">LSB_First</a> =0x01,     </div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;         <a class="code" href="namespaceutl_1_1spi.html#aed6b713381c193c598572ebac0b284cca47bde70fdcc82c8363d16c7137641b79">MSB_First</a> =0x80      </div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;      };</div><div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="namespaceutl_1_1spi.html#a89e3e1af5df0b6c37239f7e336969f8a">   47</a></span>&#160;      <span class="keyword">enum class</span> <a class="code" href="namespaceutl_1_1spi.html#a89e3e1af5df0b6c37239f7e336969f8a">cpol</a> {</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;         <a class="code" href="namespaceutl_1_1spi.html#a89e3e1af5df0b6c37239f7e336969f8aa41bc94cbd8eebea13ce0491b2ac11b88">LOW</a> =0,  </div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;         <a class="code" href="namespaceutl_1_1spi.html#a89e3e1af5df0b6c37239f7e336969f8aab89de3b4b81c4facfac906edf29aec8c">HIGH</a>     </div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;      };</div><div class="line"><a name="l00054"></a><span class="lineno"><a class="line" href="namespaceutl_1_1spi.html#aa49fe33d495226891cef0a870cba59df">   54</a></span>&#160;      <span class="keyword">enum class</span> <a class="code" href="namespaceutl_1_1spi.html#aa49fe33d495226891cef0a870cba59df">cpha</a> {</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;         <a class="code" href="namespaceutl_1_1spi.html#a89e3e1af5df0b6c37239f7e336969f8aa41bc94cbd8eebea13ce0491b2ac11b88">LOW</a> =0,  </div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;         <a class="code" href="namespaceutl_1_1spi.html#a89e3e1af5df0b6c37239f7e336969f8aab89de3b4b81c4facfac906edf29aec8c">HIGH</a>     </div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;      };</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="l00066"></a><span class="lineno">   66</span>&#160;   <span class="keyword">template</span> &lt;<span class="keyword">typename</span> impl_t&gt;</div><div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="classutl_1_1spi__i.html">   67</a></span>&#160;   <span class="keyword">class </span><a class="code" href="classutl_1_1spi__i.html">spi_i</a> {</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;      <a class="code" href="classutl_1_1spi__i.html#adfab771b0e399b9f482e42aaa5e9db11">_CRTP_IMPL</a>(impl_t);  </div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;   <span class="keyword">public</span>:</div><div class="line"><a name="l00071"></a><span class="lineno"><a class="line" href="classutl_1_1spi__i.html#aff8ee0a2160cddbb52fce46611a6108f">   71</a></span>&#160;      <span class="keyword">using</span> <a class="code" href="classutl_1_1spi__i.html">type</a> = <a class="code" href="classutl_1_1spi__i.html">spi_i&lt;impl_t&gt;</a>;     </div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;   <span class="keyword">protected</span>:</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;      <a class="code" href="classutl_1_1spi__i.html#ad66605cdf90f6d24cad3dc5ecda94b77">spi_i</a> () = <span class="keywordflow">default</span>;              </div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;      <a class="code" href="classutl_1_1spi__i.html#ae77cb8be7d648a62a1ad252d829eccfb">~spi_i</a> () = <span class="keywordflow">default</span>;             </div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;      <a class="code" href="classutl_1_1spi__i.html#ad66605cdf90f6d24cad3dc5ecda94b77">spi_i</a> (<span class="keyword">const</span> <a class="code" href="classutl_1_1spi__i.html">type</a>&amp;) = <span class="keyword">delete</span>;    </div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;      <a class="code" href="classutl_1_1spi__i.html">type</a>&amp; <a class="code" href="classutl_1_1spi__i.html#aa5cf05ce005cb23e6317b3eef70bf4b0">operator= </a>(<span class="keyword">const</span> <a class="code" href="classutl_1_1spi__i.html">type</a>&amp;) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;   <span class="keyword">private</span>:</div><div class="line"><a name="l00092"></a><span class="lineno"><a class="line" href="classutl_1_1spi__i.html#a68a21ac9727eed3802ce7d1181ac4f8c">   92</a></span>&#160;      uint32_t <a class="code" href="classutl_1_1spi__i.html#a68a21ac9727eed3802ce7d1181ac4f8c">_clock</a> ()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> impl()._clock (); } </div><div class="line"><a name="l00093"></a><span class="lineno"><a class="line" href="classutl_1_1spi__i.html#af0a9bfc5d02ccd2bfbe8044132884578">   93</a></span>&#160;      <span class="keywordtype">void</span> <a class="code" href="classutl_1_1spi__i.html#af0a9bfc5d02ccd2bfbe8044132884578">_clock</a> (uint32_t c) { impl()._clock (c); }       </div><div class="line"><a name="l00094"></a><span class="lineno"><a class="line" href="classutl_1_1spi__i.html#acf3ffd9c79d4cdeac100cf3273120689">   94</a></span>&#160;      <a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> <a class="code" href="classutl_1_1spi__i.html#acf3ffd9c79d4cdeac100cf3273120689">_tx_data</a> (<a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> b) { <span class="keywordflow">return</span> impl()._tx_data (b); } </div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;   <span class="keyword">public</span>:</div><div class="line"><a name="l00102"></a><span class="lineno"><a class="line" href="classutl_1_1spi__i.html#a24cdd0c5ce4ed45a6c1b88ea43328634">  102</a></span>&#160;      uint32_t <a class="code" href="classutl_1_1spi__i.html#a24cdd0c5ce4ed45a6c1b88ea43328634">clock</a> ()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="classutl_1_1spi__i.html#a68a21ac9727eed3802ce7d1181ac4f8c">_clock</a> (); }   </div><div class="line"><a name="l00103"></a><span class="lineno"><a class="line" href="classutl_1_1spi__i.html#a0ebb46a523ace45fd69950f90f9b3af4">  103</a></span>&#160;      <span class="keywordtype">void</span> <a class="code" href="classutl_1_1spi__i.html#a0ebb46a523ace45fd69950f90f9b3af4">clock</a> (uint32_t c) { <a class="code" href="classutl_1_1spi__i.html#a68a21ac9727eed3802ce7d1181ac4f8c">_clock</a> (c); }         </div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;   <span class="keyword">public</span>:</div><div class="line"><a name="l00114"></a><span class="lineno"><a class="line" href="classutl_1_1spi__i.html#ac8376d88480a992ac47699637e1a29a5">  114</a></span>&#160;      <a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> <a class="code" href="classutl_1_1spi__i.html#ac8376d88480a992ac47699637e1a29a5">tx_data</a> (<a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> out) {</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;         <span class="keywordflow">return</span> <a class="code" href="classutl_1_1spi__i.html#acf3ffd9c79d4cdeac100cf3273120689">_tx_data</a> (out);</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;      }</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160; 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     }</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;      <span class="keywordtype">size_t</span> <a class="code" href="classutl_1_1spi__i.html#a846dead32b91efcb48eed614daf68e8f">rx_data</a> (<a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> *in, <span class="keywordtype">size_t</span> n);</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;   };</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;   <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _I&gt;</div><div class="line"><a name="l00152"></a><span class="lineno"><a class="line" href="classutl_1_1spi__i.html#af3e303c2982202261700044d31596248">  152</a></span>&#160;   <span class="keywordtype">size_t</span> <a class="code" href="classutl_1_1spi__i.html#ac8376d88480a992ac47699637e1a29a5">spi_i&lt;_I&gt;::tx_data</a> (<span class="keyword">const</span> <a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> *out, <a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> *in, <span class="keywordtype">size_t</span> n) {</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;      <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> nn {n} ; nn ; --nn)</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;         *in++ = _tx_data (*out++);</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;      <span class="keywordflow">return</span> n;</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;   }</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;   <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _I&gt;</div><div class="line"><a name="l00165"></a><span class="lineno"><a class="line" href="classutl_1_1spi__i.html#a2053009da5364ead720aebd7cc537c21">  165</a></span>&#160;   <span class="keywordtype">size_t</span> <a class="code" href="classutl_1_1spi__i.html#a846dead32b91efcb48eed614daf68e8f">spi_i&lt;_I&gt;::rx_data</a> (<a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> *in, <span class="keywordtype">size_t</span> n) {</div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;      <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> nn {n} ; nn ; --nn)</div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;         *in++ = _tx_data (0xFF);</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;      <span class="keywordflow">return</span> n;</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="l00176"></a><span class="lineno">  176</span>&#160;   <span class="keyword">template</span> &lt;&gt;</div><div class="line"><a name="l00177"></a><span class="lineno"><a class="line" href="classutl_1_1spi__i_3_01virtual__tag_01_4.html">  177</a></span>&#160;   <span class="keyword">class </span><a class="code" href="classutl_1_1spi__i.html">spi_i</a> &lt;<a class="code" href="structutl_1_1virtual__tag.html">virtual_tag</a>&gt; {</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;   <span class="keyword">public</span>:</div><div class="line"><a name="l00179"></a><span class="lineno"><a class="line" href="classutl_1_1spi__i_3_01virtual__tag_01_4.html#ab539774624977f1f86b98269d01d56ba">  179</a></span>&#160;      <span class="keyword">using</span> <a class="code" href="classutl_1_1spi__i_3_01virtual__tag_01_4.html">type</a> = <a class="code" href="classutl_1_1spi__i_3_01virtual__tag_01_4.html">spi_i&lt;virtual_tag&gt;</a>; </div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;</div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;   <span class="keyword">protected</span>:</div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;      <a class="code" href="classutl_1_1spi__i.html#ad66605cdf90f6d24cad3dc5ecda94b77">spi_i</a> () = <span class="keywordflow">default</span>;                    </div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;      <a class="code" href="classutl_1_1spi__i.html#ad66605cdf90f6d24cad3dc5ecda94b77">spi_i</a> (<span class="keyword">const</span> <a class="code" href="classutl_1_1spi__i_3_01virtual__tag_01_4.html">type</a>&amp;) = <span class="keyword">delete</span>;          </div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;      <a class="code" href="classutl_1_1spi__i_3_01virtual__tag_01_4.html">type</a>&amp; <a class="code" href="classutl_1_1spi__i.html#aa5cf05ce005cb23e6317b3eef70bf4b0">operator= </a>(<span class="keyword">const</span> <a class="code" href="classutl_1_1spi__i_3_01virtual__tag_01_4.html">type</a>&amp;) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;   <span class="keyword">public</span>:</div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;      <span class="keyword">virtual</span> <a class="code" href="classutl_1_1spi__i.html#ae77cb8be7d648a62a1ad252d829eccfb">~spi_i</a> () = <span class="keywordflow">default</span>;           </div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;</div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;   <span class="keyword">private</span>:</div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;      <span class="keyword">virtual</span> uint32_t <a class="code" href="classutl_1_1spi__i.html#a68a21ac9727eed3802ce7d1181ac4f8c">_clock</a> () <span class="keyword">const</span> =0;   </div><div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;      <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classutl_1_1spi__i.html#a68a21ac9727eed3802ce7d1181ac4f8c">_clock</a> (uint32_t) =0;     </div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;      <span class="keyword">virtual</span> <a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> <a class="code" href="classutl_1_1spi__i.html#acf3ffd9c79d4cdeac100cf3273120689">_tx_data</a> (<a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a>) =0;   </div><div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;</div><div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;   <span class="keyword">public</span>:</div><div class="line"><a name="l00208"></a><span class="lineno"><a class="line" href="classutl_1_1spi__i_3_01virtual__tag_01_4.html#a92a9350f72d3fca45b0900bf2bf5e8d9">  208</a></span>&#160;      uint32_t <a class="code" href="classutl_1_1spi__i_3_01virtual__tag_01_4.html#a92a9350f72d3fca45b0900bf2bf5e8d9">clock</a> ()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="classutl_1_1spi__i.html#a68a21ac9727eed3802ce7d1181ac4f8c">_clock</a> (); }   </div><div class="line"><a name="l00209"></a><span class="lineno"><a class="line" href="classutl_1_1spi__i_3_01virtual__tag_01_4.html#af168fba0d949aade779a63abf9f4bad2">  209</a></span>&#160;      <span class="keywordtype">void</span> <a class="code" href="classutl_1_1spi__i_3_01virtual__tag_01_4.html#af168fba0d949aade779a63abf9f4bad2">clock</a> (uint32_t c) { <a class="code" href="classutl_1_1spi__i.html#a68a21ac9727eed3802ce7d1181ac4f8c">_clock</a> (c); }         </div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;</div><div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;   <span class="keyword">public</span>:</div><div class="line"><a name="l00220"></a><span class="lineno"><a class="line" href="classutl_1_1spi__i_3_01virtual__tag_01_4.html#ac7b587521c1fdc83d32164dcee3c7b40">  220</a></span>&#160;      <a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> <a class="code" href="classutl_1_1spi__i_3_01virtual__tag_01_4.html#ac7b587521c1fdc83d32164dcee3c7b40">tx_data</a> (<a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> out) {</div><div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;         <span class="keywordflow">return</span> <a class="code" href="classutl_1_1spi__i.html#acf3ffd9c79d4cdeac100cf3273120689">_tx_data</a> (out);</div><div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;      }</div><div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;      <span class="keywordtype">size_t</span> <a class="code" href="classutl_1_1spi__i.html#ac8376d88480a992ac47699637e1a29a5">tx_data</a> (<span class="keyword">const</span> <a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> *out, <a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> *in, <span class="keywordtype">size_t</span> n);</div><div class="line"><a name="l00235"></a><span class="lineno"><a class="line" href="classutl_1_1spi__i_3_01virtual__tag_01_4.html#a8ccd44f6fa97bbfe8cda5595436eb3a7">  235</a></span>&#160;      <a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> <a class="code" href="classutl_1_1spi__i_3_01virtual__tag_01_4.html#a8ccd44f6fa97bbfe8cda5595436eb3a7">rx_data</a> () {</div><div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;         <span class="keywordflow">return</span> <a class="code" href="classutl_1_1spi__i.html#acf3ffd9c79d4cdeac100cf3273120689">_tx_data</a> (0xFF);</div><div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;      }</div><div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;      <span class="keywordtype">size_t</span> <a class="code" href="classutl_1_1spi__i.html#a846dead32b91efcb48eed614daf68e8f">rx_data</a> (<a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> *in, <span class="keywordtype">size_t</span> n);</div><div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;</div><div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;   };</div><div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;</div><div class="line"><a name="l00258"></a><span class="lineno"><a class="line" href="classutl_1_1spi__i_3_01virtual__tag_01_4.html#a2777c812eb27d7b3d106c55b31819d10">  258</a></span>&#160;   <span class="keywordtype">size_t</span> <a class="code" href="classutl_1_1spi__i.html#ac8376d88480a992ac47699637e1a29a5">spi_i&lt;virtual_tag&gt;::tx_data</a> (<span class="keyword">const</span> <a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> *out, <a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> *in, <span class="keywordtype">size_t</span> n) {</div><div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;      <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> nn {n} ; nn ; --nn)</div><div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;         *in++ = <a class="code" href="classutl_1_1spi__i.html#acf3ffd9c79d4cdeac100cf3273120689">_tx_data</a> (*out++);</div><div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;      <span class="keywordflow">return</span> n;</div><div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;   }</div><div class="line"><a name="l00270"></a><span class="lineno"><a class="line" href="classutl_1_1spi__i_3_01virtual__tag_01_4.html#a59245cc0d924d160268b6813975a7c5f">  270</a></span>&#160;   <span class="keywordtype">size_t</span> <a class="code" href="classutl_1_1spi__i.html#a846dead32b91efcb48eed614daf68e8f">spi_i&lt;virtual_tag&gt;::rx_data</a> (<a class="code" href="namespaceutl.html#a1427cb5a2b13313147a902173b91e3c1">byte_t</a> *in, <span class="keywordtype">size_t</span> n) {</div><div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;      <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> nn {n} ; nn ; --nn)</div><div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;         *in++ = <a class="code" href="classutl_1_1spi__i.html#acf3ffd9c79d4cdeac100cf3273120689">_tx_data</a> (0xFF);</div><div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;      <span class="keywordflow">return</span> n;</div><div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;   }</div><div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;</div><div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;</div><div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;</div><div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;<span class="preprocessor">#if defined _utl_have_concepts</span></div><div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;   <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;   concept <span class="keywordtype">bool</span> Spi_i = requires (T t, <span class="keyword">const</span> T ct, <span class="keyword">typename</span> T::Sequence s) {</div><div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160; 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     <span class="keyword">template</span> &lt;<span class="keyword">class</span> _Tp&gt; <span class="keyword">using</span> <a class="code" href="namespaceutl_1_1spi__i__details.html#a4dcf3c71fddf790e45a3be2c19906c97">try_rx_t</a>    = decltype (declval&lt;_Tp&gt;().rx_data());</div><div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;</div><div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;      <span class="keyword">template</span> &lt;<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> =<span class="keywordtype">void</span>&gt;</div><div class="line"><a name="l00305"></a><span class="lineno"><a class="line" href="structutl_1_1spi__i__details_1_1is__spi__.html">  305</a></span>&#160;      <span class="keyword">struct </span><a class="code" href="structutl_1_1spi__i__details_1_1is__spi__.html">is_spi_</a> : <a class="code" href="namespaceutl_1_1meta.html#a55511dbaa0adb605ce22dcec11f8d22d">meta::false_</a> {};</div><div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;</div><div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;      <span class="keyword">template</span> &lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00309"></a><span class="lineno"><a class="line" href="structutl_1_1spi__i__details_1_1is__spi___3_01___tp_00_01meta_1_1void__t_3_01meta_1_1use__if__sa2db29f6d65d34ecf5e49ec30b6600d78.html">  309</a></span>&#160;      <span class="keyword">struct </span><a class="code" href="structutl_1_1spi__i__details_1_1is__spi__.html">is_spi_</a> &lt;</div><div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;         _Tp,</div><div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;         meta::<a class="code" href="group__detection.html#gae7373c997420d16cf37e542eb3cfa3ad">void_t</a> &lt;</div><div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;            meta::use_if_same_t &lt;try_cclock_t&lt;_Tp&gt;, uint32_t&gt;,</div><div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;            meta::use_if_same_t &lt;try_clock_t&lt;_Tp&gt;,  void&gt;,</div><div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;            meta::use_if_same_t &lt;try_tx_t&lt;_Tp&gt;,     byte_t&gt;,</div><div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;            meta::use_if_same_t &lt;try_rx_t&lt;_Tp&gt;,     byte_t&gt;</div><div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;         &gt;</div><div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;      &gt; : <a class="code" href="namespaceutl_1_1meta.html#ae9a5a8fbe8202785f059935af219fb97">meta::true_</a> {};</div><div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;   }</div><div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;<span class="comment">//   template &lt;typename _Tp&gt;</span></div><div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;<span class="comment">//   constexpr bool Spi_i = spi_i_details::is_spi_&lt;_Tp&gt;::value;</span></div><div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;</div><div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;</div><div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;}  <span class="comment">// namespace utl</span></div><div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;</div><div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* #ifndef _utl_com_spi_h__ */</span><span class="preprocessor"></span></div><div class="ttc" id="meta_8h_html"><div class="ttname"><a href="meta_8h.html">meta.h</a></div><div class="ttdoc">Include all meta library. </div></div>

  94. <div class="ttc" id="namespaceutl_1_1spi_html_a89e3e1af5df0b6c37239f7e336969f8a"><div class="ttname"><a href="namespaceutl_1_1spi.html#a89e3e1af5df0b6c37239f7e336969f8a">utl::spi::cpol</a></div><div class="ttdeci">cpol</div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00047">spi.h:47</a></div></div>

  95. <div class="ttc" id="namespaceutl_1_1spi_html_aed6b713381c193c598572ebac0b284cca47bde70fdcc82c8363d16c7137641b79"><div class="ttname"><a href="namespaceutl_1_1spi.html#aed6b713381c193c598572ebac0b284cca47bde70fdcc82c8363d16c7137641b79">utl::spi::bitOrder::MSB_First</a></div><div class="ttdoc">Less significant first. </div></div>

  96. <div class="ttc" id="group__detection_html_gae7373c997420d16cf37e542eb3cfa3ad"><div class="ttname"><a href="group__detection.html#gae7373c997420d16cf37e542eb3cfa3ad">utl::meta::void_t</a></div><div class="ttdeci">void void_t</div><div class="ttdoc">void_t type alias </div><div class="ttdef"><b>Definition:</b> <a href="detection_8h_source.html#l00055">detection.h:55</a></div></div>

  97. <div class="ttc" id="classutl_1_1spi__i_html_ad66605cdf90f6d24cad3dc5ecda94b77"><div class="ttname"><a href="classutl_1_1spi__i.html#ad66605cdf90f6d24cad3dc5ecda94b77">utl::spi_i::spi_i</a></div><div class="ttdeci">spi_i()=default</div><div class="ttdoc">Allow constructor from derived only. </div></div>

  98. <div class="ttc" id="namespaceutl_1_1spi_html_aed6b713381c193c598572ebac0b284cca6db67adee32c3bd4ff03acf3244e1b4b"><div class="ttname"><a href="namespaceutl_1_1spi.html#aed6b713381c193c598572ebac0b284cca6db67adee32c3bd4ff03acf3244e1b4b">utl::spi::bitOrder::LSB_First</a></div><div class="ttdoc">Most significant first. </div></div>

  99. <div class="ttc" id="classutl_1_1spi__i_html_a24cdd0c5ce4ed45a6c1b88ea43328634"><div class="ttname"><a href="classutl_1_1spi__i.html#a24cdd0c5ce4ed45a6c1b88ea43328634">utl::spi_i::clock</a></div><div class="ttdeci">uint32_t clock() const</div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00102">spi.h:102</a></div></div>

  100. <div class="ttc" id="namespaceutl_1_1meta_html_ae9a5a8fbe8202785f059935af219fb97"><div class="ttname"><a href="namespaceutl_1_1meta.html#ae9a5a8fbe8202785f059935af219fb97">utl::meta::true_</a></div><div class="ttdeci">bool_&lt; true &gt; true_</div><div class="ttdoc">The type used as a compile-time boolean with true value. </div><div class="ttdef"><b>Definition:</b> <a href="integral_8h_source.html#l00068">integral.h:68</a></div></div>

  101. <div class="ttc" id="classutl_1_1spi__i_3_01virtual__tag_01_4_html_a92a9350f72d3fca45b0900bf2bf5e8d9"><div class="ttname"><a href="classutl_1_1spi__i_3_01virtual__tag_01_4.html#a92a9350f72d3fca45b0900bf2bf5e8d9">utl::spi_i&lt; virtual_tag &gt;::clock</a></div><div class="ttdeci">uint32_t clock() const</div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00208">spi.h:208</a></div></div>

  102. <div class="ttc" id="namespaceutl_1_1spi_html_aed6b713381c193c598572ebac0b284cc"><div class="ttname"><a href="namespaceutl_1_1spi.html#aed6b713381c193c598572ebac0b284cc">utl::spi::bitOrder</a></div><div class="ttdeci">bitOrder</div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00040">spi.h:40</a></div></div>

  103. <div class="ttc" id="crtp_8h_html"><div class="ttname"><a href="crtp_8h.html">crtp.h</a></div></div>

  104. <div class="ttc" id="classutl_1_1spi__i_html_ae77cb8be7d648a62a1ad252d829eccfb"><div class="ttname"><a href="classutl_1_1spi__i.html#ae77cb8be7d648a62a1ad252d829eccfb">utl::spi_i::~spi_i</a></div><div class="ttdeci">~spi_i()=default</div><div class="ttdoc">Allow destructor from derived only. </div></div>

  105. <div class="ttc" id="classutl_1_1spi__i_3_01virtual__tag_01_4_html_af168fba0d949aade779a63abf9f4bad2"><div class="ttname"><a href="classutl_1_1spi__i_3_01virtual__tag_01_4.html#af168fba0d949aade779a63abf9f4bad2">utl::spi_i&lt; virtual_tag &gt;::clock</a></div><div class="ttdeci">void clock(uint32_t c)</div><div class="ttdoc">set clock frequency of the bus </div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00209">spi.h:209</a></div></div>

  106. <div class="ttc" id="classutl_1_1spi__i_html_a0ebb46a523ace45fd69950f90f9b3af4"><div class="ttname"><a href="classutl_1_1spi__i.html#a0ebb46a523ace45fd69950f90f9b3af4">utl::spi_i::clock</a></div><div class="ttdeci">void clock(uint32_t c)</div><div class="ttdoc">set clock frequency of the bus </div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00103">spi.h:103</a></div></div>

  107. <div class="ttc" id="namespaceutl_1_1spi_html_a89e3e1af5df0b6c37239f7e336969f8aa41bc94cbd8eebea13ce0491b2ac11b88"><div class="ttname"><a href="namespaceutl_1_1spi.html#a89e3e1af5df0b6c37239f7e336969f8aa41bc94cbd8eebea13ce0491b2ac11b88">utl::spi::cpol::LOW</a></div><div class="ttdoc">LOW. </div></div>

  108. <div class="ttc" id="namespaceutl_1_1spi__i__details_html_a4dcf3c71fddf790e45a3be2c19906c97"><div class="ttname"><a href="namespaceutl_1_1spi__i__details.html#a4dcf3c71fddf790e45a3be2c19906c97">utl::spi_i_details::try_rx_t</a></div><div class="ttdeci">decltype(declval&lt; _Tp &gt;().rx_data()) try_rx_t</div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00301">spi.h:301</a></div></div>

  109. <div class="ttc" id="classutl_1_1spi__i_3_01virtual__tag_01_4_html"><div class="ttname"><a href="classutl_1_1spi__i_3_01virtual__tag_01_4.html">utl::spi_i&lt; virtual_tag &gt;</a></div><div class="ttdoc">A virtual base class implementation. </div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00177">spi.h:177</a></div></div>

  110. <div class="ttc" id="classutl_1_1spi__i_html_adfab771b0e399b9f482e42aaa5e9db11"><div class="ttname"><a href="classutl_1_1spi__i.html#adfab771b0e399b9f482e42aaa5e9db11">utl::spi_i::_CRTP_IMPL</a></div><div class="ttdeci">_CRTP_IMPL(impl_t)</div></div>

  111. <div class="ttc" id="classutl_1_1spi__i_html_a846dead32b91efcb48eed614daf68e8f"><div class="ttname"><a href="classutl_1_1spi__i.html#a846dead32b91efcb48eed614daf68e8f">utl::spi_i::rx_data</a></div><div class="ttdeci">byte_t rx_data()</div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00129">spi.h:129</a></div></div>

  112. <div class="ttc" id="namespaceutl_1_1meta_html_a55511dbaa0adb605ce22dcec11f8d22d"><div class="ttname"><a href="namespaceutl_1_1meta.html#a55511dbaa0adb605ce22dcec11f8d22d">utl::meta::false_</a></div><div class="ttdeci">bool_&lt; false &gt; false_</div><div class="ttdoc">The type used as a compile-time boolean with false value. </div><div class="ttdef"><b>Definition:</b> <a href="integral_8h_source.html#l00069">integral.h:69</a></div></div>

  113. <div class="ttc" id="classutl_1_1spi__i_html_ac8376d88480a992ac47699637e1a29a5"><div class="ttname"><a href="classutl_1_1spi__i.html#ac8376d88480a992ac47699637e1a29a5">utl::spi_i::tx_data</a></div><div class="ttdeci">byte_t tx_data(byte_t out)</div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00114">spi.h:114</a></div></div>

  114. <div class="ttc" id="classutl_1_1spi__i_3_01virtual__tag_01_4_html_a8ccd44f6fa97bbfe8cda5595436eb3a7"><div class="ttname"><a href="classutl_1_1spi__i_3_01virtual__tag_01_4.html#a8ccd44f6fa97bbfe8cda5595436eb3a7">utl::spi_i&lt; virtual_tag &gt;::rx_data</a></div><div class="ttdeci">byte_t rx_data()</div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00235">spi.h:235</a></div></div>

  115. <div class="ttc" id="namespaceutl_1_1spi_html_aa49fe33d495226891cef0a870cba59df"><div class="ttname"><a href="namespaceutl_1_1spi.html#aa49fe33d495226891cef0a870cba59df">utl::spi::cpha</a></div><div class="ttdeci">cpha</div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00054">spi.h:54</a></div></div>

  116. <div class="ttc" id="classutl_1_1spi__i_3_01virtual__tag_01_4_html_ac7b587521c1fdc83d32164dcee3c7b40"><div class="ttname"><a href="classutl_1_1spi__i_3_01virtual__tag_01_4.html#ac7b587521c1fdc83d32164dcee3c7b40">utl::spi_i&lt; virtual_tag &gt;::tx_data</a></div><div class="ttdeci">byte_t tx_data(byte_t out)</div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00220">spi.h:220</a></div></div>

  117. <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>

  118. <div class="ttc" id="namespaceutl_1_1spi_html_a89e3e1af5df0b6c37239f7e336969f8aab89de3b4b81c4facfac906edf29aec8c"><div class="ttname"><a href="namespaceutl_1_1spi.html#a89e3e1af5df0b6c37239f7e336969f8aab89de3b4b81c4facfac906edf29aec8c">utl::spi::cpol::HIGH</a></div><div class="ttdoc">HIGH. </div></div>

  119. <div class="ttc" id="classutl_1_1spi__i_html_acf3ffd9c79d4cdeac100cf3273120689"><div class="ttname"><a href="classutl_1_1spi__i.html#acf3ffd9c79d4cdeac100cf3273120689">utl::spi_i::_tx_data</a></div><div class="ttdeci">byte_t _tx_data(byte_t b)</div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00094">spi.h:94</a></div></div>

  120. <div class="ttc" id="namespaceutl_1_1spi__i__details_html_a755d8f10cfde3f5c3b9900eb11c858bd"><div class="ttname"><a href="namespaceutl_1_1spi__i__details.html#a755d8f10cfde3f5c3b9900eb11c858bd">utl::spi_i_details::try_tx_t</a></div><div class="ttdeci">decltype(declval&lt; _Tp &gt;().tx_data(declval&lt; byte_t &gt;())) try_tx_t</div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00300">spi.h:300</a></div></div>

  121. <div class="ttc" id="namespaceutl_1_1spi__i__details_html_af2f4800aa77af82767a3ac55b9b242a6"><div class="ttname"><a href="namespaceutl_1_1spi__i__details.html#af2f4800aa77af82767a3ac55b9b242a6">utl::spi_i_details::try_clock_t</a></div><div class="ttdeci">decltype(declval&lt; _Tp &gt;().clock(declval&lt; uint32_t &gt;())) try_clock_t</div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00299">spi.h:299</a></div></div>

  122. <div class="ttc" id="classutl_1_1spi__i_html"><div class="ttname"><a href="classutl_1_1spi__i.html">utl::spi_i</a></div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00067">spi.h:67</a></div></div>

  123. <div class="ttc" id="classutl_1_1spi__i_html_a68a21ac9727eed3802ce7d1181ac4f8c"><div class="ttname"><a href="classutl_1_1spi__i.html#a68a21ac9727eed3802ce7d1181ac4f8c">utl::spi_i::_clock</a></div><div class="ttdeci">uint32_t _clock() const</div><div class="ttdoc">clock frequency of the bus [Hz] </div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00092">spi.h:92</a></div></div>

  124. <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>

  125. <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>

  126. <div class="ttc" id="classutl_1_1spi__i_html_af0a9bfc5d02ccd2bfbe8044132884578"><div class="ttname"><a href="classutl_1_1spi__i.html#af0a9bfc5d02ccd2bfbe8044132884578">utl::spi_i::_clock</a></div><div class="ttdeci">void _clock(uint32_t c)</div><div class="ttdoc">set clock frequency of the bus [Hz] </div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00093">spi.h:93</a></div></div>

  127. <div class="ttc" id="namespaceutl_1_1spi__i__details_html_ae1a4fad6acf8faccc5e85ee9b710c109"><div class="ttname"><a href="namespaceutl_1_1spi__i__details.html#ae1a4fad6acf8faccc5e85ee9b710c109">utl::spi_i_details::try_cclock_t</a></div><div class="ttdeci">decltype(declval&lt; const _Tp &gt;().clock()) try_cclock_t</div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00298">spi.h:298</a></div></div>

  128. <div class="ttc" id="classutl_1_1spi__i_html_aa5cf05ce005cb23e6317b3eef70bf4b0"><div class="ttname"><a href="classutl_1_1spi__i.html#aa5cf05ce005cb23e6317b3eef70bf4b0">utl::spi_i::operator=</a></div><div class="ttdeci">type &amp; operator=(const type &amp;)=delete</div></div>

  129. <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>

  130. <div class="ttc" id="structutl_1_1spi__i__details_1_1is__spi___html"><div class="ttname"><a href="structutl_1_1spi__i__details_1_1is__spi__.html">utl::spi_i_details::is_spi_</a></div><div class="ttdoc">Primary template to catch any non SPI interface types. </div><div class="ttdef"><b>Definition:</b> <a href="spi_8h_source.html#l00305">spi.h:305</a></div></div>

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