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  79. <a href="#nested-classes">Classes</a> &#124;
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  80. <a href="#define-members">Macros</a> &#124;
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  81. <a href="#func-members">Functions</a>  </div>
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  82.   <div class="headertitle">
    83. 

  83. <div class="title">Fast Pin I/O</div>  </div>
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  84. </div><!--header-->
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  85. <div class="contents">
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  86. <table class="memberdecls">
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  87. <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="nested-classes"></a>
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  88. Classes</h2></td></tr>
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  89. <tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_digital_pin.html">DigitalPin&lt; PinNumber &gt;</a></td></tr>
    90. 

  90. <tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Fast digital port I/O.  <a href="class_digital_pin.html#details">More...</a><br /></td></tr>
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  91. <tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
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  92. <tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_gpio_pin_map__t.html">GpioPinMap_t</a></td></tr>
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  93. <tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
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  94. </table><table class="memberdecls">
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  95. <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a>
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  96. Macros</h2></td></tr>
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  97. <tr class="memitem:gaeea7c59480c0a4e25aad3890545cef52"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__digital_pin.html#gaeea7c59480c0a4e25aad3890545cef52">fastPinConfig</a>(pin,  mode,  level)&#160;&#160;&#160;{<a class="el" href="group__digital_pin.html#ga5b9c17432f07f0eb39283c8b23665fe7">fastPinMode</a>(pin, mode); <a class="el" href="group__digital_pin.html#gac4f52b5038c366dd4ac081b18709f19c">fastDigitalWrite</a>(pin, level);}</td></tr>
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  98. <tr class="separator:gaeea7c59480c0a4e25aad3890545cef52"><td class="memSeparator" colspan="2">&#160;</td></tr>
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  99. <tr class="memitem:gacf92f370944e233db04f7423bde1c164"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__digital_pin.html#gacf92f370944e233db04f7423bde1c164">GPIO_PIN</a>(reg,  bit)&#160;&#160;&#160;{&amp;PIN##reg, &amp;DDR##reg, &amp;PORT##reg, 1 &lt;&lt; bit}</td></tr>
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  102. <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
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  103. Functions</h2></td></tr>
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  104. <tr class="memitem:ga107992311bca47c7ebee5afdedc280e0"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__digital_pin.html#ga107992311bca47c7ebee5afdedc280e0">badPinCheck</a> (uint8_t pin)</td></tr>
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  105. <tr class="separator:ga107992311bca47c7ebee5afdedc280e0"><td class="memSeparator" colspan="2">&#160;</td></tr>
    106. 

  106. <tr class="memitem:ga2a50c39692fdc6a7be0f614f6d730bfe"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__digital_pin.html#ga2a50c39692fdc6a7be0f614f6d730bfe">badPinNumber</a> (void)</td></tr>
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  107. <tr class="separator:ga2a50c39692fdc6a7be0f614f6d730bfe"><td class="memSeparator" colspan="2">&#160;</td></tr>
    108. 

  108. <tr class="memitem:gaa28ed1bee40bd072ba33554ac6d36ed8"><td class="memItemLeft" align="right" valign="top">static volatile uint8_t *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__digital_pin.html#gaa28ed1bee40bd072ba33554ac6d36ed8">ddrReg</a> (uint8_t pin)</td></tr>
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  109. <tr class="separator:gaa28ed1bee40bd072ba33554ac6d36ed8"><td class="memSeparator" colspan="2">&#160;</td></tr>
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  110. <tr class="memitem:gaff40f792e0b2aefb3ef6f11f32bae3dd"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__digital_pin.html#gaff40f792e0b2aefb3ef6f11f32bae3dd">fastBitWriteSafe</a> (volatile uint8_t *address, uint8_t mask, bool level)</td></tr>
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  112. <tr class="memitem:gada03ef0d2522fe5639f5239991993409"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__digital_pin.html#gada03ef0d2522fe5639f5239991993409">fastDdrWrite</a> (uint8_t pin, bool level)</td></tr>
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  113. <tr class="separator:gada03ef0d2522fe5639f5239991993409"><td class="memSeparator" colspan="2">&#160;</td></tr>
    114. 

  114. <tr class="memitem:ga618a9ee1c3d1b9fc5c8a2c6a43014b08"><td class="memItemLeft" align="right" valign="top">static bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__digital_pin.html#ga618a9ee1c3d1b9fc5c8a2c6a43014b08">fastDigitalRead</a> (uint8_t pin)</td></tr>
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    116. 

  116. <tr class="memitem:ga5314f1aaede89a4090b44779c8c551f1"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__digital_pin.html#ga5314f1aaede89a4090b44779c8c551f1">fastDigitalToggle</a> (uint8_t pin)</td></tr>
    117. 

  117. <tr class="separator:ga5314f1aaede89a4090b44779c8c551f1"><td class="memSeparator" colspan="2">&#160;</td></tr>
    118. 

  118. <tr class="memitem:gac4f52b5038c366dd4ac081b18709f19c"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__digital_pin.html#gac4f52b5038c366dd4ac081b18709f19c">fastDigitalWrite</a> (uint8_t pin, bool level)</td></tr>
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  119. <tr class="separator:gac4f52b5038c366dd4ac081b18709f19c"><td class="memSeparator" colspan="2">&#160;</td></tr>
    120. 

  120. <tr class="memitem:ga5b9c17432f07f0eb39283c8b23665fe7"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__digital_pin.html#ga5b9c17432f07f0eb39283c8b23665fe7">fastPinMode</a> (uint8_t pin, uint8_t mode)</td></tr>
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  121. <tr class="separator:ga5b9c17432f07f0eb39283c8b23665fe7"><td class="memSeparator" colspan="2">&#160;</td></tr>
    122. 

  122. <tr class="memitem:ga99fe9f7aeaaae3764a7b7c40d9d9837b"><td class="memItemLeft" align="right" valign="top">static uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__digital_pin.html#ga99fe9f7aeaaae3764a7b7c40d9d9837b">pinMask</a> (uint8_t pin)</td></tr>
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  123. <tr class="separator:ga99fe9f7aeaaae3764a7b7c40d9d9837b"><td class="memSeparator" colspan="2">&#160;</td></tr>
    124. 

  124. <tr class="memitem:ga213b72ce9a61eddce1e85fa057e9e3b6"><td class="memItemLeft" align="right" valign="top">static volatile uint8_t *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__digital_pin.html#ga213b72ce9a61eddce1e85fa057e9e3b6">pinReg</a> (uint8_t pin)</td></tr>
    125. 

  125. <tr class="separator:ga213b72ce9a61eddce1e85fa057e9e3b6"><td class="memSeparator" colspan="2">&#160;</td></tr>
    126. 

  126. <tr class="memitem:ga1e2ef44778ccf79ac2c02afe0633ef88"><td class="memItemLeft" align="right" valign="top">static volatile uint8_t *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__digital_pin.html#ga1e2ef44778ccf79ac2c02afe0633ef88">portReg</a> (uint8_t pin)</td></tr>
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    128. 

  128. </table>
    129. 

  129. <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
    130. 

  130. <p>Fast Digital I/O functions and template class. </p>
    131. 

  131. <h2 class="groupheader">Macro Definition Documentation</h2>
    132. 

  132. <a class="anchor" id="gaeea7c59480c0a4e25aad3890545cef52"></a>
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  133. <div class="memitem">
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  134. <div class="memproto">
    135. 

  135.       <table class="memname">
    136. 

  136.         <tr>
    137. 

  137.           <td class="memname">#define fastPinConfig</td>
    138. 

  138.           <td>(</td>
    139. 

  139.           <td class="paramtype">&#160;</td>
    140. 

  140.           <td class="paramname">pin, </td>
    141. 

  141.         </tr>
    142. 

  142.         <tr>
    143. 

  143.           <td class="paramkey"></td>
    144. 

  144.           <td></td>
    145. 

  145.           <td class="paramtype">&#160;</td>
    146. 

  146.           <td class="paramname">mode, </td>
    147. 

  147.         </tr>
    148. 

  148.         <tr>
    149. 

  149.           <td class="paramkey"></td>
    150. 

  150.           <td></td>
    151. 

  151.           <td class="paramtype">&#160;</td>
    152. 

  152.           <td class="paramname">level&#160;</td>
    153. 

  153.         </tr>
    154. 

  154.         <tr>
    155. 

  155.           <td></td>
    156. 

  156.           <td>)</td>
    157. 

  157.           <td></td><td>&#160;&#160;&#160;{<a class="el" href="group__digital_pin.html#ga5b9c17432f07f0eb39283c8b23665fe7">fastPinMode</a>(pin, mode); <a class="el" href="group__digital_pin.html#gac4f52b5038c366dd4ac081b18709f19c">fastDigitalWrite</a>(pin, level);}</td>
    158. 

  158.         </tr>
    159. 

  159.       </table>
    160. 

  160. </div><div class="memdoc">
    161. 

  161. <p>set pin configuration </p><dl class="params"><dt>Parameters</dt><dd>
    162. 

  162.   <table class="params">
    163. 

  163.     <tr><td class="paramdir">[in]</td><td class="paramname">pin</td><td>Arduino pin number </td></tr>
    164. 

  164.     <tr><td class="paramdir">[in]</td><td class="paramname">mode</td><td>mode INPUT or OUTPUT. </td></tr>
    165. 

  165.     <tr><td class="paramdir">[in]</td><td class="paramname">level</td><td>If mode is output, set level high/low. If mode is input, enable or disable the pin's 20K pullup. </td></tr>
    166. 

  166.   </table>
    167. 

  167.   </dd>
    168. 

  168. </dl>
    169. 

  169. 

  170. </div>
    171. 

  171. </div>
    172. 

  172. <a class="anchor" id="gacf92f370944e233db04f7423bde1c164"></a>
    173. 

  173. <div class="memitem">
    174. 

  174. <div class="memproto">
    175. 

  175.       <table class="memname">
    176. 

  176.         <tr>
    177. 

  177.           <td class="memname">#define GPIO_PIN</td>
    178. 

  178.           <td>(</td>
    179. 

  179.           <td class="paramtype">&#160;</td>
    180. 

  180.           <td class="paramname">reg, </td>
    181. 

  181.         </tr>
    182. 

  182.         <tr>
    183. 

  183.           <td class="paramkey"></td>
    184. 

  184.           <td></td>
    185. 

  185.           <td class="paramtype">&#160;</td>
    186. 

  186.           <td class="paramname">bit&#160;</td>
    187. 

  187.         </tr>
    188. 

  188.         <tr>
    189. 

  189.           <td></td>
    190. 

  190.           <td>)</td>
    191. 

  191.           <td></td><td>&#160;&#160;&#160;{&amp;PIN##reg, &amp;DDR##reg, &amp;PORT##reg, 1 &lt;&lt; bit}</td>
    192. 

  192.         </tr>
    193. 

  193.       </table>
    194. 

  194. </div><div class="memdoc">
    195. 

  195. <p>Initializer macro. </p>
    196. 

  196. 

  197. </div>
    198. 

  198. </div>
    199. 

  199. <h2 class="groupheader">Function Documentation</h2>
    200. 

  200. <a class="anchor" id="ga107992311bca47c7ebee5afdedc280e0"></a>
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  201. <div class="memitem">
    202. 

  202. <div class="memproto">
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  203. <table class="mlabels">
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  204.   <tr>
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  205.   <td class="mlabels-left">
    206. 

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    207. 

  207.         <tr>
    208. 

  208.           <td class="memname">static void badPinCheck </td>
    209. 

  209.           <td>(</td>
    210. 

  210.           <td class="paramtype">uint8_t&#160;</td>
    211. 

  211.           <td class="paramname"><em>pin</em></td><td>)</td>
    212. 

  212.           <td></td>
    213. 

  213.         </tr>
    214. 

  214.       </table>
    215. 

  215.   </td>
    216. 

  216.   <td class="mlabels-right">
    217. 

  217. <span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span>  </td>
    218. 

  218.   </tr>
    219. 

  219. </table>
    220. 

  220. </div><div class="memdoc">
    221. 

  221. <p>Check for valid pin number </p><dl class="params"><dt>Parameters</dt><dd>
    222. 

  222.   <table class="params">
    223. 

  223.     <tr><td class="paramdir">[in]</td><td class="paramname">pin</td><td>Number of pin to be checked. </td></tr>
    224. 

  224.   </table>
    225. 

  225.   </dd>
    226. 

  226. </dl>
    227. 

  227. 

  228. </div>
    229. 

  229. </div>
    230. 

  230. <a class="anchor" id="ga2a50c39692fdc6a7be0f614f6d730bfe"></a>
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  231. <div class="memitem">
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  234.         <tr>
    235. 

  235.           <td class="memname">void badPinNumber </td>
    236. 

  236.           <td>(</td>
    237. 

  237.           <td class="paramtype">void&#160;</td>
    238. 

  238.           <td class="paramname"></td><td>)</td>
    239. 

  239.           <td></td>
    240. 

  240.         </tr>
    241. 

  241.       </table>
    242. 

  242. </div><div class="memdoc">
    243. 

  243. <p>generate bad pin number error </p>
    244. 

  244. 

  245. </div>
    246. 

  246. </div>
    247. 

  247. <a class="anchor" id="gaa28ed1bee40bd072ba33554ac6d36ed8"></a>
    248. 

  248. <div class="memitem">
    249. 

  249. <div class="memproto">
    250. 

  250. <table class="mlabels">
    251. 

  251.   <tr>
    252. 

  252.   <td class="mlabels-left">
    253. 

  253.       <table class="memname">
    254. 

  254.         <tr>
    255. 

  255.           <td class="memname">static volatile uint8_t* ddrReg </td>
    256. 

  256.           <td>(</td>
    257. 

  257.           <td class="paramtype">uint8_t&#160;</td>
    258. 

  258.           <td class="paramname"><em>pin</em></td><td>)</td>
    259. 

  259.           <td></td>
    260. 

  260.         </tr>
    261. 

  261.       </table>
    262. 

  262.   </td>
    263. 

  263.   <td class="mlabels-right">
    264. 

  264. <span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span>  </td>
    265. 

  265.   </tr>
    266. 

  266. </table>
    267. 

  267. </div><div class="memdoc">
    268. 

  268. <p>DDR register address </p><dl class="params"><dt>Parameters</dt><dd>
    269. 

  269.   <table class="params">
    270. 

  270.     <tr><td class="paramdir">[in]</td><td class="paramname">pin</td><td>Arduino pin number </td></tr>
    271. 

  271.   </table>
    272. 

  272.   </dd>
    273. 

  273. </dl>
    274. 

  274. <dl class="section return"><dt>Returns</dt><dd>register address </dd></dl>
    275. 

  275. 

  276. </div>
    277. 

  277. </div>
    278. 

  278. <a class="anchor" id="gaff40f792e0b2aefb3ef6f11f32bae3dd"></a>
    279. 

  279. <div class="memitem">
    280. 

  280. <div class="memproto">
    281. 

  281. <table class="mlabels">
    282. 

  282.   <tr>
    283. 

  283.   <td class="mlabels-left">
    284. 

  284.       <table class="memname">
    285. 

  285.         <tr>
    286. 

  286.           <td class="memname">static void fastBitWriteSafe </td>
    287. 

  287.           <td>(</td>
    288. 

  288.           <td class="paramtype">volatile uint8_t *&#160;</td>
    289. 

  289.           <td class="paramname"><em>address</em>, </td>
    290. 

  290.         </tr>
    291. 

  291.         <tr>
    292. 

  292.           <td class="paramkey"></td>
    293. 

  293.           <td></td>
    294. 

  294.           <td class="paramtype">uint8_t&#160;</td>
    295. 

  295.           <td class="paramname"><em>mask</em>, </td>
    296. 

  296.         </tr>
    297. 

  297.         <tr>
    298. 

  298.           <td class="paramkey"></td>
    299. 

  299.           <td></td>
    300. 

  300.           <td class="paramtype">bool&#160;</td>
    301. 

  301.           <td class="paramname"><em>level</em>&#160;</td>
    302. 

  302.         </tr>
    303. 

  303.         <tr>
    304. 

  304.           <td></td>
    305. 

  305.           <td>)</td>
    306. 

  306.           <td></td><td></td>
    307. 

  307.         </tr>
    308. 

  308.       </table>
    309. 

  309.   </td>
    310. 

  310.   <td class="mlabels-right">
    311. 

  311. <span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span>  </td>
    312. 

  312.   </tr>
    313. 

  313. </table>
    314. 

  314. </div><div class="memdoc">
    315. 

  315. <p>Fast write helper. </p><dl class="params"><dt>Parameters</dt><dd>
    316. 

  316.   <table class="params">
    317. 

  317.     <tr><td class="paramdir">[in]</td><td class="paramname">address</td><td>I/O register address </td></tr>
    318. 

  318.     <tr><td class="paramdir">[in]</td><td class="paramname">mask</td><td>bit mask for pin </td></tr>
    319. 

  319.     <tr><td class="paramdir">[in]</td><td class="paramname">level</td><td>value for bit </td></tr>
    320. 

  320.   </table>
    321. 

  321.   </dd>
    322. 

  322. </dl>
    323. 

  323. 

  324. </div>
    325. 

  325. </div>
    326. 

  326. <a class="anchor" id="gada03ef0d2522fe5639f5239991993409"></a>
    327. 

  327. <div class="memitem">
    328. 

  328. <div class="memproto">
    329. 

  329. <table class="mlabels">
    330. 

  330.   <tr>
    331. 

  331.   <td class="mlabels-left">
    332. 

  332.       <table class="memname">
    333. 

  333.         <tr>
    334. 

  334.           <td class="memname">static void fastDdrWrite </td>
    335. 

  335.           <td>(</td>
    336. 

  336.           <td class="paramtype">uint8_t&#160;</td>
    337. 

  337.           <td class="paramname"><em>pin</em>, </td>
    338. 

  338.         </tr>
    339. 

  339.         <tr>
    340. 

  340.           <td class="paramkey"></td>
    341. 

  341.           <td></td>
    342. 

  342.           <td class="paramtype">bool&#160;</td>
    343. 

  343.           <td class="paramname"><em>level</em>&#160;</td>
    344. 

  344.         </tr>
    345. 

  345.         <tr>
    346. 

  346.           <td></td>
    347. 

  347.           <td>)</td>
    348. 

  348.           <td></td><td></td>
    349. 

  349.         </tr>
    350. 

  350.       </table>
    351. 

  351.   </td>
    352. 

  352.   <td class="mlabels-right">
    353. 

  353. <span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span>  </td>
    354. 

  354.   </tr>
    355. 

  355. </table>
    356. 

  356. </div><div class="memdoc">
    357. 

  357. <p>Write the DDR register. </p><dl class="params"><dt>Parameters</dt><dd>
    358. 

  358.   <table class="params">
    359. 

  359.     <tr><td class="paramdir">[in]</td><td class="paramname">pin</td><td>Arduino pin number </td></tr>
    360. 

  360.     <tr><td class="paramdir">[in]</td><td class="paramname">level</td><td>value to write </td></tr>
    361. 

  361.   </table>
    362. 

  362.   </dd>
    363. 

  363. </dl>
    364. 

  364. 

  365. </div>
    366. 

  366. </div>
    367. 

  367. <a class="anchor" id="ga618a9ee1c3d1b9fc5c8a2c6a43014b08"></a>
    368. 

  368. <div class="memitem">
    369. 

  369. <div class="memproto">
    370. 

  370. <table class="mlabels">
    371. 

  371.   <tr>
    372. 

  372.   <td class="mlabels-left">
    373. 

  373.       <table class="memname">
    374. 

  374.         <tr>
    375. 

  375.           <td class="memname">static bool fastDigitalRead </td>
    376. 

  376.           <td>(</td>
    377. 

  377.           <td class="paramtype">uint8_t&#160;</td>
    378. 

  378.           <td class="paramname"><em>pin</em></td><td>)</td>
    379. 

  379.           <td></td>
    380. 

  380.         </tr>
    381. 

  381.       </table>
    382. 

  382.   </td>
    383. 

  383.   <td class="mlabels-right">
    384. 

  384. <span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span>  </td>
    385. 

  385.   </tr>
    386. 

  386. </table>
    387. 

  387. </div><div class="memdoc">
    388. 

  388. <p>Read pin value. </p><dl class="params"><dt>Parameters</dt><dd>
    389. 

  389.   <table class="params">
    390. 

  390.     <tr><td class="paramdir">[in]</td><td class="paramname">pin</td><td>Arduino pin number </td></tr>
    391. 

  391.   </table>
    392. 

  392.   </dd>
    393. 

  393. </dl>
    394. 

  394. <dl class="section return"><dt>Returns</dt><dd>value read </dd></dl>
    395. 

  395. 

  396. </div>
    397. 

  397. </div>
    398. 

  398. <a class="anchor" id="ga5314f1aaede89a4090b44779c8c551f1"></a>
    399. 

  399. <div class="memitem">
    400. 

  400. <div class="memproto">
    401. 

  401. <table class="mlabels">
    402. 

  402.   <tr>
    403. 

  403.   <td class="mlabels-left">
    404. 

  404.       <table class="memname">
    405. 

  405.         <tr>
    406. 

  406.           <td class="memname">static void fastDigitalToggle </td>
    407. 

  407.           <td>(</td>
    408. 

  408.           <td class="paramtype">uint8_t&#160;</td>
    409. 

  409.           <td class="paramname"><em>pin</em></td><td>)</td>
    410. 

  410.           <td></td>
    411. 

  411.         </tr>
    412. 

  412.       </table>
    413. 

  413.   </td>
    414. 

  414.   <td class="mlabels-right">
    415. 

  415. <span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span>  </td>
    416. 

  416.   </tr>
    417. 

  417. </table>
    418. 

  418. </div><div class="memdoc">
    419. 

  419. <p>Toggle a pin. </p><dl class="params"><dt>Parameters</dt><dd>
    420. 

  420.   <table class="params">
    421. 

  421.     <tr><td class="paramdir">[in]</td><td class="paramname">pin</td><td>Arduino pin number</td></tr>
    422. 

  422.   </table>
    423. 

  423.   </dd>
    424. 

  424. </dl>
    425. 

  425. <p>If the pin is in output mode toggle the pin level. If the pin is in input mode toggle the state of the 20K pullup. </p>
    426. 

  426. 

  427. </div>
    428. 

  428. </div>
    429. 

  429. <a class="anchor" id="gac4f52b5038c366dd4ac081b18709f19c"></a>
    430. 

  430. <div class="memitem">
    431. 

  431. <div class="memproto">
    432. 

  432. <table class="mlabels">
    433. 

  433.   <tr>
    434. 

  434.   <td class="mlabels-left">
    435. 

  435.       <table class="memname">
    436. 

  436.         <tr>
    437. 

  437.           <td class="memname">static void fastDigitalWrite </td>
    438. 

  438.           <td>(</td>
    439. 

  439.           <td class="paramtype">uint8_t&#160;</td>
    440. 

  440.           <td class="paramname"><em>pin</em>, </td>
    441. 

  441.         </tr>
    442. 

  442.         <tr>
    443. 

  443.           <td class="paramkey"></td>
    444. 

  444.           <td></td>
    445. 

  445.           <td class="paramtype">bool&#160;</td>
    446. 

  446.           <td class="paramname"><em>level</em>&#160;</td>
    447. 

  447.         </tr>
    448. 

  448.         <tr>
    449. 

  449.           <td></td>
    450. 

  450.           <td>)</td>
    451. 

  451.           <td></td><td></td>
    452. 

  452.         </tr>
    453. 

  453.       </table>
    454. 

  454.   </td>
    455. 

  455.   <td class="mlabels-right">
    456. 

  456. <span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span>  </td>
    457. 

  457.   </tr>
    458. 

  458. </table>
    459. 

  459. </div><div class="memdoc">
    460. 

  460. <p>Set pin value. </p><dl class="params"><dt>Parameters</dt><dd>
    461. 

  461.   <table class="params">
    462. 

  462.     <tr><td class="paramdir">[in]</td><td class="paramname">pin</td><td>Arduino pin number </td></tr>
    463. 

  463.     <tr><td class="paramdir">[in]</td><td class="paramname">level</td><td>value to write </td></tr>
    464. 

  464.   </table>
    465. 

  465.   </dd>
    466. 

  466. </dl>
    467. 

  467. 

  468. </div>
    469. 

  469. </div>
    470. 

  470. <a class="anchor" id="ga5b9c17432f07f0eb39283c8b23665fe7"></a>
    471. 

  471. <div class="memitem">
    472. 

  472. <div class="memproto">
    473. 

  473. <table class="mlabels">
    474. 

  474.   <tr>
    475. 

  475.   <td class="mlabels-left">
    476. 

  476.       <table class="memname">
    477. 

  477.         <tr>
    478. 

  478.           <td class="memname">static void fastPinMode </td>
    479. 

  479.           <td>(</td>
    480. 

  480.           <td class="paramtype">uint8_t&#160;</td>
    481. 

  481.           <td class="paramname"><em>pin</em>, </td>
    482. 

  482.         </tr>
    483. 

  483.         <tr>
    484. 

  484.           <td class="paramkey"></td>
    485. 

  485.           <td></td>
    486. 

  486.           <td class="paramtype">uint8_t&#160;</td>
    487. 

  487.           <td class="paramname"><em>mode</em>&#160;</td>
    488. 

  488.         </tr>
    489. 

  489.         <tr>
    490. 

  490.           <td></td>
    491. 

  491.           <td>)</td>
    492. 

  492.           <td></td><td></td>
    493. 

  493.         </tr>
    494. 

  494.       </table>
    495. 

  495.   </td>
    496. 

  496.   <td class="mlabels-right">
    497. 

  497. <span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span>  </td>
    498. 

  498.   </tr>
    499. 

  499. </table>
    500. 

  500. </div><div class="memdoc">
    501. 

  501. <p>Set pin mode. </p><dl class="params"><dt>Parameters</dt><dd>
    502. 

  502.   <table class="params">
    503. 

  503.     <tr><td class="paramdir">[in]</td><td class="paramname">pin</td><td>Arduino pin number </td></tr>
    504. 

  504.     <tr><td class="paramdir">[in]</td><td class="paramname">mode</td><td>INPUT, OUTPUT, or INPUT_PULLUP.</td></tr>
    505. 

  505.   </table>
    506. 

  506.   </dd>
    507. 

  507. </dl>
    508. 

  508. <p>The internal pullup resistors will be enabled if mode is INPUT_PULLUP and disabled if the mode is INPUT. </p>
    509. 

  509. 

  510. </div>
    511. 

  511. </div>
    512. 

  512. <a class="anchor" id="ga99fe9f7aeaaae3764a7b7c40d9d9837b"></a>
    513. 

  513. <div class="memitem">
    514. 

  514. <div class="memproto">
    515. 

  515. <table class="mlabels">
    516. 

  516.   <tr>
    517. 

  517.   <td class="mlabels-left">
    518. 

  518.       <table class="memname">
    519. 

  519.         <tr>
    520. 

  520.           <td class="memname">static uint8_t pinMask </td>
    521. 

  521.           <td>(</td>
    522. 

  522.           <td class="paramtype">uint8_t&#160;</td>
    523. 

  523.           <td class="paramname"><em>pin</em></td><td>)</td>
    524. 

  524.           <td></td>
    525. 

  525.         </tr>
    526. 

  526.       </table>
    527. 

  527.   </td>
    528. 

  528.   <td class="mlabels-right">
    529. 

  529. <span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span>  </td>
    530. 

  530.   </tr>
    531. 

  531. </table>
    532. 

  532. </div><div class="memdoc">
    533. 

  533. <p>Bit mask for pin </p><dl class="params"><dt>Parameters</dt><dd>
    534. 

  534.   <table class="params">
    535. 

  535.     <tr><td class="paramdir">[in]</td><td class="paramname">pin</td><td>Arduino pin number </td></tr>
    536. 

  536.   </table>
    537. 

  537.   </dd>
    538. 

  538. </dl>
    539. 

  539. <dl class="section return"><dt>Returns</dt><dd>mask </dd></dl>
    540. 

  540. 

  541. </div>
    542. 

  542. </div>
    543. 

  543. <a class="anchor" id="ga213b72ce9a61eddce1e85fa057e9e3b6"></a>
    544. 

  544. <div class="memitem">
    545. 

  545. <div class="memproto">
    546. 

  546. <table class="mlabels">
    547. 

  547.   <tr>
    548. 

  548.   <td class="mlabels-left">
    549. 

  549.       <table class="memname">
    550. 

  550.         <tr>
    551. 

  551.           <td class="memname">static volatile uint8_t* pinReg </td>
    552. 

  552.           <td>(</td>
    553. 

  553.           <td class="paramtype">uint8_t&#160;</td>
    554. 

  554.           <td class="paramname"><em>pin</em></td><td>)</td>
    555. 

  555.           <td></td>
    556. 

  556.         </tr>
    557. 

  557.       </table>
    558. 

  558.   </td>
    559. 

  559.   <td class="mlabels-right">
    560. 

  560. <span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span>  </td>
    561. 

  561.   </tr>
    562. 

  562. </table>
    563. 

  563. </div><div class="memdoc">
    564. 

  564. <p>PIN register address </p><dl class="params"><dt>Parameters</dt><dd>
    565. 

  565.   <table class="params">
    566. 

  566.     <tr><td class="paramdir">[in]</td><td class="paramname">pin</td><td>Arduino pin number </td></tr>
    567. 

  567.   </table>
    568. 

  568.   </dd>
    569. 

  569. </dl>
    570. 

  570. <dl class="section return"><dt>Returns</dt><dd>register address </dd></dl>
    571. 

  571. 

  572. </div>
    573. 

  573. </div>
    574. 

  574. <a class="anchor" id="ga1e2ef44778ccf79ac2c02afe0633ef88"></a>
    575. 

  575. <div class="memitem">
    576. 

  576. <div class="memproto">
    577. 

  577. <table class="mlabels">
    578. 

  578.   <tr>
    579. 

  579.   <td class="mlabels-left">
    580. 

  580.       <table class="memname">
    581. 

  581.         <tr>
    582. 

  582.           <td class="memname">static volatile uint8_t* portReg </td>
    583. 

  583.           <td>(</td>
    584. 

  584.           <td class="paramtype">uint8_t&#160;</td>
    585. 

  585.           <td class="paramname"><em>pin</em></td><td>)</td>
    586. 

  586.           <td></td>
    587. 

  587.         </tr>
    588. 

  588.       </table>
    589. 

  589.   </td>
    590. 

  590.   <td class="mlabels-right">
    591. 

  591. <span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span>  </td>
    592. 

  592.   </tr>
    593. 

  593. </table>
    594. 

  594. </div><div class="memdoc">
    595. 

  595. <p>PORT register address </p><dl class="params"><dt>Parameters</dt><dd>
    596. 

  596.   <table class="params">
    597. 

  597.     <tr><td class="paramdir">[in]</td><td class="paramname">pin</td><td>Arduino pin number </td></tr>
    598. 

  598.   </table>
    599. 

  599.   </dd>
    600. 

  600. </dl>
    601. 

  601. <dl class="section return"><dt>Returns</dt><dd>register address </dd></dl>
    602. 

  602. 

  603. </div>
    604. 

  604. </div>
    605. 

  605. </div><!-- contents -->
    606. 

  606. <!-- start footer part -->
    607. 

  607. <hr class="footer"/><address class="footer"><small>
    608. 

  608. Generated on Tue Jul 19 2016 06:31:51 for SdFat by &#160;<a href="http://www.doxygen.org/index.html">
    609. 

  609. <img class="footer" src="doxygen.png" alt="doxygen"/>
    610. 

  610. </a> 1.8.10
    611. 

  611. </small></address>
    612. 

  612. </body>
    613. 

  613. </html>
    614.