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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#pragma once</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>  </div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="preprocessor">#include <inttypes.h></span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor">#include "config.h"</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>  </div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">http://resnet.uoregon.edu/~gurney_j/jmpc/bitwise.html</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#define BITCOUNT(x) (((BX_(x)+(BX_(x)>>4)) & 0x0F0F0F0F) % 255)</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#define BX_(x) ((x) - (((x)>>1)&0x77777777) - (((x)>>2)&0x33333333) - (((x)>>3)&0x11111111))</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>  </div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#define ADC_PIN_IDX(pin) BITCOUNT(ADC_CHAN_MSK & ((1 << (pin)) - 1))</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  </div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#if BITCOUNT(ADC_CHAN_MSK) != ADC_CHAN_CNT</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor"># error "ADC_CHAN_MSK oes not match ADC_CHAN_CNT"</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  </div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#define VOLT_DIV_REF 5 </span><span class="comment">//[V]</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  </div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">extern</span> <span class="keyword">volatile</span> uint8_t adc_channel;</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">extern</span> <span class="keyword">volatile</span> uint16_t adc_values[ADC_CHAN_CNT];</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  </div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">extern</span> <span class="keywordtype">void</span> adc_init();</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">extern</span> <span class="keywordtype">void</span> adc_start_cycle(); <span class="comment">//should be called from an atomic context only</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> adc_cycle_done() { <span class="keywordflow">return</span> adc_channel >= ADC_CHAN_CNT; }</div>
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