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<li class="navelem"><a class="el" href="dir_e5fbe6d2783ccd4c93c7856d92d7be6e.html">GitHub</a></li><li class="navelem"><a class="el" href="dir_397a095372f04465e811d0ee219bbf8f.html">USB_Host_Shield_2.0</a></li> </ul>
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<a href="usbhost_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> <span class="comment">/* Copyright (C) 2011 Circuits At Home, LTD. All rights reserved.</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"></span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">This software may be distributed and modified under the terms of the GNU</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">General Public License version 2 (GPL2) as published by the Free Software</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">Foundation and appearing in the file GPL2.TXT included in the packaging of</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">this file. Please note that GPL2 Section 2[b] requires that all works based</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">on this software must also be made publicly available under the terms of</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">the GPL2 ("Copyleft").</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"></span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">Contact information</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">-------------------</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"></span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">Circuits At Home, LTD</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">Web : http://www.circuitsathome.com</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">e-mail : support@circuitsathome.com</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">/* MAX3421E-based USB Host Library header file */</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#ifndef _USBHOST_H_</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor"></span><span class="preprocessor">#define _USBHOST_H_</span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// So we can use delay() -- xxxajk</span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#if defined(ARDUINO) && ARDUINO >=100</span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor"></span><span class="preprocessor">#include "Arduino.h"</span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#else</span></div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor"></span><span class="preprocessor">#include <WProgram.h></span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#endif</span></div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include "<a class="code" href="avrpins_8h.html">avrpins.h</a>"</span></div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include "<a class="code" href="max3421e_8h.html">max3421e.h</a>"</span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include "<a class="code" href="usb__ch9_8h.html">usb_ch9.h</a>"</span></div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <stdio.h></span></div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment">/* SPI initialization */</span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"><a class="code" href="class_s_pi.html"> 33</a></span> <span class="keyword">template</span>< <span class="keyword">typename</span> CLK, <span class="keyword">typename</span> MOSI, <span class="keyword">typename</span> MISO, <span class="keyword">typename</span> SPI_SS > <span class="keyword">class </span><a class="code" href="class_s_pi.html">SPi</a> {</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div>
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<div class="line"><a name="l00036"></a><span class="lineno"><a class="code" href="class_s_pi.html#ad26219fa147c50cd1cac105a235ee997"> 36</a></span>  <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="class_s_pi.html#ad26219fa147c50cd1cac105a235ee997">init</a>() {</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="comment">//uint8_t tmp;</span></div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  CLK::SetDirWrite();</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  MOSI::SetDirWrite();</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  MISO::SetDirRead();</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  SPI_SS::SetDirWrite();</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="comment">/* mode 00 (CPOL=0, CPHA=0) master, fclk/2. Mode 11 (CPOL=11, CPHA=11) is also supported by MAX3421E */</span></div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  SPCR = 0x50;</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  SPSR = 0x01; <span class="comment">// 0x01</span></div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  </div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="comment">//tmp = SPSR;</span></div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="comment">//tmp = SPDR;</span></div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  }</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> };</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> </div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment">/* SPI pin definitions. see avrpins.h */</span></div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor">#if defined(__AVR_ATmega1280__) || (__AVR_ATmega2560__) || defined(__AVR_ATmega32U4__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)</span></div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor"></span><span class="keyword">typedef</span> <a class="code" href="class_s_pi.html">SPi< Pb1, Pb2, Pb3, Pb0 ></a> spi;</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="preprocessor">#endif</span></div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="preprocessor"></span><span class="preprocessor">#if defined(__AVR_ATmega168__) || defined(__AVR_ATmega328P__)</span></div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="preprocessor"></span><span class="keyword">typedef</span> <a class="code" href="class_s_pi.html">SPi< Pb5, Pb3, Pb4, Pb2 ></a> spi;</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="preprocessor">#endif</span></div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="preprocessor"></span><span class="preprocessor">#if defined(__AVR_ATmega644__) || defined(__AVR_ATmega644P__)</span></div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="preprocessor"></span><span class="keyword">typedef</span> <a class="code" href="class_s_pi.html">SPi< Pb7, Pb5, Pb6, Pb4 ></a> spi;</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="preprocessor">#endif</span></div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00062"></a><span class="lineno"><a class="code" href="usbhost_8h.html#ab1424f62efde609157774a4e80e016ef"> 62</a></span> <span class="keyword">typedef</span> <span class="keyword">enum</span> <a class="code" href="usbhost_8h.html#ab1424f62efde609157774a4e80e016ef">VBUS_t</a> {</div>
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<div class="line"><a name="l00063"></a><span class="lineno"><a class="code" href="usbhost_8h.html#ab1424f62efde609157774a4e80e016efaf3be4933da71233c5904ec919ac1fdb0"> 63</a></span>  <a class="code" href="usbhost_8h.html#ab1424f62efde609157774a4e80e016efaf3be4933da71233c5904ec919ac1fdb0">on</a> = 0,</div>
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<div class="line"><a name="l00064"></a><span class="lineno"><a class="code" href="usbhost_8h.html#ab1424f62efde609157774a4e80e016efa53ace14c115e45153a1c9105accceb4c"> 64</a></span>  <a class="code" href="usbhost_8h.html#ab1424f62efde609157774a4e80e016efa53ace14c115e45153a1c9105accceb4c">off</a> = <a class="code" href="max3421e_8h.html#aff368111e79950099861bc3698fbaf0e">GPX_VBDET</a></div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> };</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> </div>
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<div class="line"><a name="l00067"></a><span class="lineno"><a class="code" href="class_m_a_x3421e.html"> 67</a></span> <span class="keyword">template</span>< <span class="keyword">typename</span> SS, <span class="keyword">typename</span> INTR > <span class="keyword">class </span><a class="code" href="class_m_a_x3421e.html">MAX3421e</a> <span class="comment">/* : public spi */</span> {</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keyword">static</span> uint8_t vbusState;</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <a class="code" href="class_m_a_x3421e.html#ac8b4177b9941d02042605d564fb37d0b">MAX3421e</a>();</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordtype">void</span> <a class="code" href="class_m_a_x3421e.html#a74e387200f57bc03152247d630c166aa">regWr</a>(uint8_t reg, uint8_t data);</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  uint8_t* <a class="code" href="class_m_a_x3421e.html#ac61db72bd5952916cdc6edc20e1c763c">bytesWr</a>(uint8_t reg, uint8_t nbytes, uint8_t* data_p);</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordtype">void</span> <a class="code" href="class_m_a_x3421e.html#a7b925f552f25cb26eb317f73f9ade664">gpioWr</a>(uint8_t data);</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  uint8_t <a class="code" href="class_m_a_x3421e.html#ae7faae82a8d68c38b43833b8fddcb8e8">regRd</a>(uint8_t reg);</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  uint8_t* <a class="code" href="class_m_a_x3421e.html#af1ceb905ac614b98d58579946587b083">bytesRd</a>(uint8_t reg, uint8_t nbytes, uint8_t* data_p);</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  uint8_t <a class="code" href="class_m_a_x3421e.html#a3ceb313de4a652ebd49b9b4eeb763826">gpioRd</a>();</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  uint16_t <a class="code" href="class_m_a_x3421e.html#ad2b85831a551d8e30496882ce7e57fd2">reset</a>();</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  int8_t <a class="code" href="class_m_a_x3421e.html#a8414e5a161ca272e435b9ab7f5db92ea">Init</a>();</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  int8_t <a class="code" href="class_m_a_x3421e.html#a8414e5a161ca272e435b9ab7f5db92ea">Init</a>(<span class="keywordtype">int</span> mseconds);</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div>
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<div class="line"><a name="l00082"></a><span class="lineno"><a class="code" href="class_m_a_x3421e.html#a7710f66808395315559eb228a68cff9a"> 82</a></span>  <span class="keywordtype">void</span> <a class="code" href="class_m_a_x3421e.html#a7710f66808395315559eb228a68cff9a">vbusPower</a>(<a class="code" href="usbhost_8h.html#ab1424f62efde609157774a4e80e016ef">VBUS_t</a> state) {</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <a class="code" href="class_m_a_x3421e.html#a74e387200f57bc03152247d630c166aa">regWr</a>(<a class="code" href="max3421e_8h.html#a6b9f9d34ace73b82db1d41b870942fae">rPINCTL</a>, (<a class="code" href="max3421e_8h.html#a0bdabdb078bf1dcc89d654432bff40fa">bmFDUPSPI</a> | <a class="code" href="max3421e_8h.html#ac43fd01b46413767deb91becd3506de0">bmINTLEVEL</a> | state));</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  }</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div>
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<div class="line"><a name="l00086"></a><span class="lineno"><a class="code" href="class_m_a_x3421e.html#a0353d430ba18466706337ed623a224e3"> 86</a></span>  uint8_t <a class="code" href="class_m_a_x3421e.html#a0353d430ba18466706337ed623a224e3">getVbusState</a>(<span class="keywordtype">void</span>) {</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">return</span> vbusState;</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  };</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordtype">void</span> <a class="code" href="class_m_a_x3421e.html#a23e4762107dd807520c8a8ed21ed97a2">busprobe</a>();</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  uint8_t <a class="code" href="class_m_a_x3421e.html#af1b6b02fc7dc05a2c7ae660076d9961a">GpxHandler</a>();</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  uint8_t <a class="code" href="class_m_a_x3421e.html#a6da568ef3f5a7188d94f0287f6e7ad3a">IntHandler</a>();</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  uint8_t <a class="code" href="class_m_a_x3421e.html#acb5728095a05814d6ae3c8ddb0452969">Task</a>();</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> };</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="keyword">template</span>< <span class="keyword">typename</span> SS, <span class="keyword">typename</span> INTR ></div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  uint8_t <a class="code" href="class_m_a_x3421e.html">MAX3421e< SS, INTR >::vbusState</a> = 0;</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment">/* constructor */</span></div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="keyword">template</span>< <span class="keyword">typename</span> SS, <span class="keyword">typename</span> INTR ></div>
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<div class="line"><a name="l00100"></a><span class="lineno"><a class="code" href="class_m_a_x3421e.html#ac8b4177b9941d02042605d564fb37d0b"> 100</a></span> <a class="code" href="class_m_a_x3421e.html#ac8b4177b9941d02042605d564fb37d0b">MAX3421e< SS, INTR >::MAX3421e</a>() {</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="comment">/* pin and peripheral setup */</span></div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  SS::SetDirWrite();</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  SS::Set();</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  spi::init();</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  INTR::SetDirRead();</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="preprocessor">#ifdef BOARD_MEGA_ADK</span></div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="preprocessor"></span> <span class="comment">/* For Mega ADK, which has Max3421e on-board, set MAX_RESET to Output mode, and pull Reset to HIGH */</span></div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  DDRJ |= _BV(PJ2);</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  PORTJ &= ~_BV(PJ2);</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  PORTJ |= _BV(PJ2);</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="preprocessor">#endif</span></div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="comment">/* MAX3421E - full-duplex SPI, level interrupt */</span></div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  regWr(<a class="code" href="max3421e_8h.html#a6b9f9d34ace73b82db1d41b870942fae">rPINCTL</a>, (<a class="code" href="max3421e_8h.html#a0bdabdb078bf1dcc89d654432bff40fa">bmFDUPSPI</a> | <a class="code" href="max3421e_8h.html#ac43fd01b46413767deb91becd3506de0">bmINTLEVEL</a> | <a class="code" href="max3421e_8h.html#aff368111e79950099861bc3698fbaf0e">GPX_VBDET</a>));</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> };</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment">/* write single byte into MAX3421 register */</span></div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="keyword">template</span>< <span class="keyword">typename</span> SS, <span class="keyword">typename</span> INTR ></div>
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<div class="line"><a name="l00119"></a><span class="lineno"><a class="code" href="class_m_a_x3421e.html#a74e387200f57bc03152247d630c166aa"> 119</a></span> <span class="keywordtype">void</span> <a class="code" href="class_m_a_x3421e.html#a74e387200f57bc03152247d630c166aa">MAX3421e< SS, INTR >::regWr</a>(uint8_t reg, uint8_t data) {</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  SS::Clear();</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  SPDR = (reg | 0x02);</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">while</span>(!(SPSR & (1 << SPIF)));</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  SPDR = data;</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">while</span>(!(SPSR & (1 << SPIF)));</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  SS::Set();</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> };</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment">/* multiple-byte write */</span></div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment">/* returns a pointer to memory position after last written */</span></div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="keyword">template</span>< <span class="keyword">typename</span> SS, <span class="keyword">typename</span> INTR ></div>
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<div class="line"><a name="l00132"></a><span class="lineno"><a class="code" href="class_m_a_x3421e.html#ac61db72bd5952916cdc6edc20e1c763c"> 132</a></span> uint8_t* <a class="code" href="class_m_a_x3421e.html#ac61db72bd5952916cdc6edc20e1c763c">MAX3421e< SS, INTR >::bytesWr</a>(uint8_t reg, uint8_t nbytes, uint8_t* data_p) {</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  SS::Clear();</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  SPDR = (reg | 0x02); <span class="comment">//set WR bit and send register number</span></div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">while</span>(nbytes--) {</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">while</span>(!(SPSR & (1 << SPIF))); <span class="comment">//check if previous byte was sent</span></div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  SPDR = (*data_p); <span class="comment">// send next data byte</span></div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  data_p++; <span class="comment">// advance data pointer</span></div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  }</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordflow">while</span>(!(SPSR & (1 << SPIF)));</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  SS::Set();</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordflow">return</span>( data_p);</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> }</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="comment">/* GPIO write */</span></div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="comment">/*GPIO byte is split between 2 registers, so two writes are needed to write one byte */</span></div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> </div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="comment">/* GPOUT bits are in the low nibble. 0-3 in IOPINS1, 4-7 in IOPINS2 */</span></div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="keyword">template</span>< <span class="keyword">typename</span> SS, <span class="keyword">typename</span> INTR ></div>
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<div class="line"><a name="l00149"></a><span class="lineno"><a class="code" href="class_m_a_x3421e.html#a7b925f552f25cb26eb317f73f9ade664"> 149</a></span> <span class="keywordtype">void</span> <a class="code" href="class_m_a_x3421e.html#a7b925f552f25cb26eb317f73f9ade664">MAX3421e< SS, INTR >::gpioWr</a>(uint8_t data) {</div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  regWr(<a class="code" href="max3421e_8h.html#a1ba1328dff83f8441af904a3e45620ec">rIOPINS1</a>, data);</div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  data >>= 4;</div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  regWr(<a class="code" href="max3421e_8h.html#a0ef7bfe2ee160a40a48ff4fa093b91de">rIOPINS2</a>, data);</div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> }</div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> </div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="comment">/* single host register read */</span></div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="keyword">template</span>< <span class="keyword">typename</span> SS, <span class="keyword">typename</span> INTR ></div>
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<div class="line"><a name="l00158"></a><span class="lineno"><a class="code" href="class_m_a_x3421e.html#ae7faae82a8d68c38b43833b8fddcb8e8"> 158</a></span> uint8_t <a class="code" href="class_m_a_x3421e.html#ae7faae82a8d68c38b43833b8fddcb8e8">MAX3421e< SS, INTR >::regRd</a>(uint8_t reg) {</div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  SS::Clear();</div>
|
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  SPDR = reg;</div>
|
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">while</span>(!(SPSR & (1 << SPIF)));</div>
|
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  SPDR = 0; <span class="comment">//send empty byte</span></div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordflow">while</span>(!(SPSR & (1 << SPIF)));</div>
|
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  SS::Set();</div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keywordflow">return</span>( SPDR);</div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> }</div>
|
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="comment">/* multiple-byte register read */</span></div>
|
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> </div>
|
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="comment">/* returns a pointer to a memory position after last read */</span></div>
|
|
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="keyword">template</span>< <span class="keyword">typename</span> SS, <span class="keyword">typename</span> INTR ></div>
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<div class="line"><a name="l00171"></a><span class="lineno"><a class="code" href="class_m_a_x3421e.html#af1ceb905ac614b98d58579946587b083"> 171</a></span> uint8_t* <a class="code" href="class_m_a_x3421e.html#af1ceb905ac614b98d58579946587b083">MAX3421e< SS, INTR >::bytesRd</a>(uint8_t reg, uint8_t nbytes, uint8_t* data_p) {</div>
|
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  SS::Clear();</div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  SPDR = reg;</div>
|
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordflow">while</span>(!(SPSR & (1 << SPIF))); <span class="comment">//wait</span></div>
|
|
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">while</span>(nbytes) {</div>
|
|
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  SPDR = 0; <span class="comment">//send empty byte</span></div>
|
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  nbytes--;</div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keywordflow">while</span>(!(SPSR & (1 << SPIF)));</div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="preprocessor">#if 0</span></div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="preprocessor"></span> {</div>
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  *data_p = SPDR;</div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  printf(<span class="stringliteral">"%2.2x "</span>, *data_p);</div>
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<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  }</div>
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<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  data_p++;</div>
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<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  }</div>
|
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<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  printf(<span class="stringliteral">"\r\n"</span>);</div>
|
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<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="preprocessor">#else</span></div>
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<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="preprocessor"></span> *data_p++ = SPDR;</div>
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<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  }</div>
|
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<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> <span class="preprocessor">#endif</span></div>
|
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<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="preprocessor"></span> SS::Set();</div>
|
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<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordflow">return</span>( data_p);</div>
|
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> }</div>
|
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<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="comment">/* GPIO read. See gpioWr for explanation */</span></div>
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<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> </div>
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<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="comment">/* GPIN pins are in high nibbles of IOPINS1, IOPINS2 */</span></div>
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<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> <span class="keyword">template</span>< <span class="keyword">typename</span> SS, <span class="keyword">typename</span> INTR ></div>
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<div class="line"><a name="l00198"></a><span class="lineno"><a class="code" href="class_m_a_x3421e.html#a3ceb313de4a652ebd49b9b4eeb763826"> 198</a></span> uint8_t <a class="code" href="class_m_a_x3421e.html#a3ceb313de4a652ebd49b9b4eeb763826">MAX3421e< SS, INTR >::gpioRd</a>() {</div>
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<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  uint8_t gpin = 0;</div>
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<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  gpin = regRd(<a class="code" href="max3421e_8h.html#a0ef7bfe2ee160a40a48ff4fa093b91de">rIOPINS2</a>); <span class="comment">//pins 4-7</span></div>
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<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  gpin &= 0xf0; <span class="comment">//clean lower nibble</span></div>
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|
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  gpin |= (regRd(<a class="code" href="max3421e_8h.html#a1ba1328dff83f8441af904a3e45620ec">rIOPINS1</a>) >> 4); <span class="comment">//shift low bits and OR with upper from previous operation.</span></div>
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<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keywordflow">return</span>( gpin);</div>
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<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> }</div>
|
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<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> </div>
|
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<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="comment">/* reset MAX3421E. Returns number of cycles it took for PLL to stabilize after reset</span></div>
|
|
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> <span class="comment"> or zero if PLL haven't stabilized in 65535 cycles */</span></div>
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<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="keyword">template</span>< <span class="keyword">typename</span> SS, <span class="keyword">typename</span> INTR ></div>
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<div class="line"><a name="l00209"></a><span class="lineno"><a class="code" href="class_m_a_x3421e.html#ad2b85831a551d8e30496882ce7e57fd2"> 209</a></span> uint16_t <a class="code" href="class_m_a_x3421e.html#ad2b85831a551d8e30496882ce7e57fd2">MAX3421e< SS, INTR >::reset</a>() {</div>
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<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  uint16_t i = 0;</div>
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<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  regWr(<a class="code" href="max3421e_8h.html#a1bbe8e1e02d9c61c36a84ce452e49264">rUSBCTL</a>, <a class="code" href="max3421e_8h.html#ab1962423aacdcc5807722237974ee0ba">bmCHIPRES</a>);</div>
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<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  regWr(<a class="code" href="max3421e_8h.html#a1bbe8e1e02d9c61c36a84ce452e49264">rUSBCTL</a>, 0x00);</div>
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<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keywordflow">while</span>(++i) {</div>
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<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keywordflow">if</span>((regRd(<a class="code" href="max3421e_8h.html#a1082650791b2a5cffb39d3caab1f48c7">rUSBIRQ</a>) & <a class="code" href="max3421e_8h.html#add73c33bb1cdb3b875f57cfa4ffdcad0">bmOSCOKIRQ</a>)) {</div>
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<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  }</div>
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<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  }</div>
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<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordflow">return</span>( i);</div>
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<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> }</div>
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<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> </div>
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<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="comment">/* initialize MAX3421E. Set Host mode, pullups, and stuff. Returns 0 if success, -1 if not */</span></div>
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<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> <span class="keyword">template</span>< <span class="keyword">typename</span> SS, <span class="keyword">typename</span> INTR ></div>
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<div class="line"><a name="l00223"></a><span class="lineno"><a class="code" href="class_m_a_x3421e.html#a8414e5a161ca272e435b9ab7f5db92ea"> 223</a></span> int8_t <a class="code" href="class_m_a_x3421e.html#a8414e5a161ca272e435b9ab7f5db92ea">MAX3421e< SS, INTR >::Init</a>() {</div>
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<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">if</span>(reset() == 0) { <span class="comment">//OSCOKIRQ hasn't asserted in time</span></div>
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<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keywordflow">return</span>( -1);</div>
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<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  }</div>
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<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> </div>
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<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="comment">// GPX pin on.</span></div>
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<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  regWr(<a class="code" href="max3421e_8h.html#a6b9f9d34ace73b82db1d41b870942fae">rPINCTL</a>, (<a class="code" href="max3421e_8h.html#a0bdabdb078bf1dcc89d654432bff40fa">bmFDUPSPI</a> | <a class="code" href="max3421e_8h.html#ac43fd01b46413767deb91becd3506de0">bmINTLEVEL</a>));</div>
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<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> </div>
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<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  regWr(<a class="code" href="max3421e_8h.html#a330db4fc764b8ccae5214645c1ee5423">rMODE</a>, <a class="code" href="max3421e_8h.html#abf795283162c960c28a14cdebd1e1894">bmDPPULLDN</a> | <a class="code" href="max3421e_8h.html#a8883bd99c93d3bf820ab3be677922e85">bmDMPULLDN</a> | <a class="code" href="max3421e_8h.html#a59ab4e3dc0a4188b74ceb405833f5d3c">bmHOST</a>); <span class="comment">// set pull-downs, Host</span></div>
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<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> </div>
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<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  regWr(<a class="code" href="max3421e_8h.html#a9eb44efd473c493d40ad42bc52289de6">rHIEN</a>, <a class="code" href="max3421e_8h.html#a3b359995b8bc2c98d5987d90bc4d85eb">bmCONDETIE</a> | <a class="code" href="max3421e_8h.html#a16e643bd8f6523b174d586218f40dbc5">bmFRAMEIE</a>); <span class="comment">//connection detection</span></div>
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<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> </div>
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<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="comment">/* check if device is connected */</span></div>
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<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  regWr(<a class="code" href="max3421e_8h.html#a7e82a85eb165f82afde45df5f98504ff">rHCTL</a>, <a class="code" href="max3421e_8h.html#af3d664335016e139354f2f6a99febff2">bmSAMPLEBUS</a>); <span class="comment">// sample USB bus</span></div>
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<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordflow">while</span>(!(regRd(<a class="code" href="max3421e_8h.html#a7e82a85eb165f82afde45df5f98504ff">rHCTL</a>) & <a class="code" href="max3421e_8h.html#af3d664335016e139354f2f6a99febff2">bmSAMPLEBUS</a>)); <span class="comment">//wait for sample operation to finish</span></div>
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<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> </div>
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<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  busprobe(); <span class="comment">//check if anything is connected</span></div>
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<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> </div>
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<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  regWr(<a class="code" href="max3421e_8h.html#a9ab289252615caa2d19ceb4359d71a44">rHIRQ</a>, <a class="code" href="max3421e_8h.html#ac915bfa0fd869c8c841c106fe468c3b5">bmCONDETIRQ</a>); <span class="comment">//clear connection detect interrupt</span></div>
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<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  regWr(<a class="code" href="max3421e_8h.html#a53da9de92c56d0cdac2a09ca10e94455">rCPUCTL</a>, 0x01); <span class="comment">//enable interrupt pin</span></div>
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<div class="line"><a name="l00243"></a><span class="lineno"> 243</span> </div>
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<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keywordflow">return</span>( 0);</div>
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<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> }</div>
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<div class="line"><a name="l00246"></a><span class="lineno"> 246</span> </div>
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<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <span class="comment">/* initialize MAX3421E. Set Host mode, pullups, and stuff. Returns 0 if success, -1 if not */</span></div>
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<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> <span class="keyword">template</span>< <span class="keyword">typename</span> SS, <span class="keyword">typename</span> INTR ></div>
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<div class="line"><a name="l00249"></a><span class="lineno"><a class="code" href="class_m_a_x3421e.html#a8acea9987fa15fe9844dbb07e4fe231e"> 249</a></span> int8_t <a class="code" href="class_m_a_x3421e.html#a8414e5a161ca272e435b9ab7f5db92ea">MAX3421e< SS, INTR >::Init</a>(<span class="keywordtype">int</span> mseconds) {</div>
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<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordflow">if</span>(reset() == 0) { <span class="comment">//OSCOKIRQ hasn't asserted in time</span></div>
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<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keywordflow">return</span>( -1);</div>
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<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  }</div>
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<div class="line"><a name="l00253"></a><span class="lineno"> 253</span> </div>
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<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="comment">// Delay a minimum of 1 second to ensure any capacitors are drained.</span></div>
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<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="comment">// 1 second is required to make sure we do not smoke a Microdrive!</span></div>
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<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="keywordflow">if</span>(mseconds < 1000) mseconds = 1000;</div>
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<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  delay(mseconds);</div>
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<div class="line"><a name="l00258"></a><span class="lineno"> 258</span> </div>
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<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  regWr(<a class="code" href="max3421e_8h.html#a330db4fc764b8ccae5214645c1ee5423">rMODE</a>, <a class="code" href="max3421e_8h.html#abf795283162c960c28a14cdebd1e1894">bmDPPULLDN</a> | <a class="code" href="max3421e_8h.html#a8883bd99c93d3bf820ab3be677922e85">bmDMPULLDN</a> | <a class="code" href="max3421e_8h.html#a59ab4e3dc0a4188b74ceb405833f5d3c">bmHOST</a>); <span class="comment">// set pull-downs, Host</span></div>
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<div class="line"><a name="l00260"></a><span class="lineno"> 260</span> </div>
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<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  regWr(<a class="code" href="max3421e_8h.html#a9eb44efd473c493d40ad42bc52289de6">rHIEN</a>, <a class="code" href="max3421e_8h.html#a3b359995b8bc2c98d5987d90bc4d85eb">bmCONDETIE</a> | <a class="code" href="max3421e_8h.html#a16e643bd8f6523b174d586218f40dbc5">bmFRAMEIE</a>); <span class="comment">//connection detection</span></div>
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<div class="line"><a name="l00262"></a><span class="lineno"> 262</span> </div>
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<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="comment">/* check if device is connected */</span></div>
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<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  regWr(<a class="code" href="max3421e_8h.html#a7e82a85eb165f82afde45df5f98504ff">rHCTL</a>, <a class="code" href="max3421e_8h.html#af3d664335016e139354f2f6a99febff2">bmSAMPLEBUS</a>); <span class="comment">// sample USB bus</span></div>
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<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="keywordflow">while</span>(!(regRd(<a class="code" href="max3421e_8h.html#a7e82a85eb165f82afde45df5f98504ff">rHCTL</a>) & <a class="code" href="max3421e_8h.html#af3d664335016e139354f2f6a99febff2">bmSAMPLEBUS</a>)); <span class="comment">//wait for sample operation to finish</span></div>
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<div class="line"><a name="l00266"></a><span class="lineno"> 266</span> </div>
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<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  busprobe(); <span class="comment">//check if anything is connected</span></div>
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<div class="line"><a name="l00268"></a><span class="lineno"> 268</span> </div>
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<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  regWr(<a class="code" href="max3421e_8h.html#a9ab289252615caa2d19ceb4359d71a44">rHIRQ</a>, <a class="code" href="max3421e_8h.html#ac915bfa0fd869c8c841c106fe468c3b5">bmCONDETIRQ</a>); <span class="comment">//clear connection detect interrupt</span></div>
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<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  regWr(<a class="code" href="max3421e_8h.html#a53da9de92c56d0cdac2a09ca10e94455">rCPUCTL</a>, 0x01); <span class="comment">//enable interrupt pin</span></div>
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<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> </div>
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<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="comment">// GPX pin on. This is done here so that busprobe will fail if we have a switch connected.</span></div>
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<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  regWr(<a class="code" href="max3421e_8h.html#a6b9f9d34ace73b82db1d41b870942fae">rPINCTL</a>, (<a class="code" href="max3421e_8h.html#a0bdabdb078bf1dcc89d654432bff40fa">bmFDUPSPI</a> | <a class="code" href="max3421e_8h.html#ac43fd01b46413767deb91becd3506de0">bmINTLEVEL</a>));</div>
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<div class="line"><a name="l00274"></a><span class="lineno"> 274</span> </div>
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<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="keywordflow">return</span>( 0);</div>
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<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> }</div>
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<div class="line"><a name="l00277"></a><span class="lineno"> 277</span> </div>
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<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> <span class="comment">/* probe bus to determine device presence and speed and switch host to this speed */</span></div>
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<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> <span class="keyword">template</span>< <span class="keyword">typename</span> SS, <span class="keyword">typename</span> INTR ></div>
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<div class="line"><a name="l00280"></a><span class="lineno"><a class="code" href="class_m_a_x3421e.html#a23e4762107dd807520c8a8ed21ed97a2"> 280</a></span> <span class="keywordtype">void</span> <a class="code" href="class_m_a_x3421e.html#a23e4762107dd807520c8a8ed21ed97a2">MAX3421e< SS, INTR >::busprobe</a>() {</div>
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<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  uint8_t bus_sample;</div>
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<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  bus_sample = regRd(<a class="code" href="max3421e_8h.html#a246dbd203f68062fab34f2869b76e479">rHRSL</a>); <span class="comment">//Get J,K status</span></div>
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<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  bus_sample &= (<a class="code" href="max3421e_8h.html#a8ea246f6fcbb926999a828b5fd4a2da8">bmJSTATUS</a> | <a class="code" href="max3421e_8h.html#af85b57e6dc78e03bc68949822f66b6de">bmKSTATUS</a>); <span class="comment">//zero the rest of the byte</span></div>
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<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="keywordflow">switch</span>(bus_sample) { <span class="comment">//start full-speed or low-speed host</span></div>
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<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keywordflow">case</span>( <a class="code" href="max3421e_8h.html#a8ea246f6fcbb926999a828b5fd4a2da8">bmJSTATUS</a>):</div>
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<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="keywordflow">if</span>((regRd(<a class="code" href="max3421e_8h.html#a330db4fc764b8ccae5214645c1ee5423">rMODE</a>) & <a class="code" href="max3421e_8h.html#a9744878036529e375f3b017b22b1eda2">bmLOWSPEED</a>) == 0) {</div>
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<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  regWr(<a class="code" href="max3421e_8h.html#a330db4fc764b8ccae5214645c1ee5423">rMODE</a>, <a class="code" href="max3421e_8h.html#a456c3175b4836ed1d2b276faeba55121">MODE_FS_HOST</a>); <span class="comment">//start full-speed host</span></div>
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<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  vbusState = <a class="code" href="max3421e_8h.html#a8ec45bdb8c5273e99c3ab89349cb43f9">FSHOST</a>;</div>
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<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  regWr(<a class="code" href="max3421e_8h.html#a330db4fc764b8ccae5214645c1ee5423">rMODE</a>, <a class="code" href="max3421e_8h.html#ab3da1b5bd1f43ba9f9da604841ba8802">MODE_LS_HOST</a>); <span class="comment">//start low-speed host</span></div>
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<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  vbusState = <a class="code" href="max3421e_8h.html#aa05ee2be883f4b96948e18b0d55ab5c2">LSHOST</a>;</div>
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<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  }</div>
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<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <span class="keywordflow">case</span>( <a class="code" href="max3421e_8h.html#af85b57e6dc78e03bc68949822f66b6de">bmKSTATUS</a>):</div>
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<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <span class="keywordflow">if</span>((regRd(<a class="code" href="max3421e_8h.html#a330db4fc764b8ccae5214645c1ee5423">rMODE</a>) & bmLOWSPEED) == 0) {</div>
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<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  regWr(<a class="code" href="max3421e_8h.html#a330db4fc764b8ccae5214645c1ee5423">rMODE</a>, <a class="code" href="max3421e_8h.html#ab3da1b5bd1f43ba9f9da604841ba8802">MODE_LS_HOST</a>); <span class="comment">//start low-speed host</span></div>
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<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  vbusState = <a class="code" href="max3421e_8h.html#aa05ee2be883f4b96948e18b0d55ab5c2">LSHOST</a>;</div>
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<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  regWr(<a class="code" href="max3421e_8h.html#a330db4fc764b8ccae5214645c1ee5423">rMODE</a>, <a class="code" href="max3421e_8h.html#a456c3175b4836ed1d2b276faeba55121">MODE_FS_HOST</a>); <span class="comment">//start full-speed host</span></div>
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<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  vbusState = <a class="code" href="max3421e_8h.html#a8ec45bdb8c5273e99c3ab89349cb43f9">FSHOST</a>;</div>
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<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  }</div>
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<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  <span class="keywordflow">case</span>( <a class="code" href="max3421e_8h.html#ad18cd77a4d34c4e0d4d9b5cfbaadc74f">bmSE1</a>): <span class="comment">//illegal state</span></div>
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<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  vbusState = <a class="code" href="max3421e_8h.html#a5c3d7b0a5b0933cfc0183cd36ea91f16">SE1</a>;</div>
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<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  <span class="keywordflow">case</span>( <a class="code" href="max3421e_8h.html#a601304fe868d2f4b84a504fc5599d703">bmSE0</a>): <span class="comment">//disconnected state</span></div>
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<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  regWr(<a class="code" href="max3421e_8h.html#a330db4fc764b8ccae5214645c1ee5423">rMODE</a>, <a class="code" href="max3421e_8h.html#abf795283162c960c28a14cdebd1e1894">bmDPPULLDN</a> | <a class="code" href="max3421e_8h.html#a8883bd99c93d3bf820ab3be677922e85">bmDMPULLDN</a> | <a class="code" href="max3421e_8h.html#a59ab4e3dc0a4188b74ceb405833f5d3c">bmHOST</a> | <a class="code" href="max3421e_8h.html#a562180c4d9e16433c011b5c0e9b5dc46">bmSEPIRQ</a>);</div>
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<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  vbusState = <a class="code" href="max3421e_8h.html#a3cb02fdd2d36f8a755c4b1946a0b0063">SE0</a>;</div>
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<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  }<span class="comment">//end switch( bus_sample )</span></div>
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<div class="line"><a name="l00311"></a><span class="lineno"> 311</span> }</div>
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<div class="line"><a name="l00312"></a><span class="lineno"> 312</span> </div>
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<div class="line"><a name="l00313"></a><span class="lineno"> 313</span> <span class="comment">/* MAX3421 state change task and interrupt handler */</span></div>
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<div class="line"><a name="l00314"></a><span class="lineno"> 314</span> <span class="keyword">template</span>< <span class="keyword">typename</span> SS, <span class="keyword">typename</span> INTR ></div>
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<div class="line"><a name="l00315"></a><span class="lineno"><a class="code" href="class_m_a_x3421e.html#acb5728095a05814d6ae3c8ddb0452969"> 315</a></span> uint8_t <a class="code" href="class_m_a_x3421e.html#acb5728095a05814d6ae3c8ddb0452969">MAX3421e< SS, INTR >::Task</a>(<span class="keywordtype">void</span>) {</div>
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<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  uint8_t rcode = 0;</div>
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<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  uint8_t pinvalue;</div>
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<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="comment">//USB_HOST_SERIAL.print("Vbus state: ");</span></div>
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<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  <span class="comment">//USB_HOST_SERIAL.println( vbusState, HEX );</span></div>
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<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  pinvalue = INTR::IsSet(); <span class="comment">//Read();</span></div>
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<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="comment">//pinvalue = digitalRead( MAX_INT );</span></div>
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<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="keywordflow">if</span>(pinvalue == 0) {</div>
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<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  rcode = IntHandler();</div>
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<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  }</div>
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<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <span class="comment">// pinvalue = digitalRead( MAX_GPX );</span></div>
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<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="comment">// if( pinvalue == LOW ) {</span></div>
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<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="comment">// GpxHandler();</span></div>
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<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="comment">// }</span></div>
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<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <span class="comment">// usbSM(); //USB state machine</span></div>
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<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <span class="keywordflow">return</span>( rcode);</div>
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<div class="line"><a name="l00331"></a><span class="lineno"> 331</span> }</div>
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<div class="line"><a name="l00332"></a><span class="lineno"> 332</span> </div>
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<div class="line"><a name="l00333"></a><span class="lineno"> 333</span> <span class="keyword">template</span>< <span class="keyword">typename</span> SS, <span class="keyword">typename</span> INTR ></div>
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<div class="line"><a name="l00334"></a><span class="lineno"><a class="code" href="class_m_a_x3421e.html#a6da568ef3f5a7188d94f0287f6e7ad3a"> 334</a></span> uint8_t <a class="code" href="class_m_a_x3421e.html#a6da568ef3f5a7188d94f0287f6e7ad3a">MAX3421e< SS, INTR >::IntHandler</a>() {</div>
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<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  uint8_t HIRQ;</div>
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<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  uint8_t HIRQ_sendback = 0x00;</div>
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<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  HIRQ = regRd(<a class="code" href="max3421e_8h.html#a9ab289252615caa2d19ceb4359d71a44">rHIRQ</a>); <span class="comment">//determine interrupt source</span></div>
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<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <span class="comment">//if( HIRQ & bmFRAMEIRQ ) { //->1ms SOF interrupt handler</span></div>
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<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <span class="comment">// HIRQ_sendback |= bmFRAMEIRQ;</span></div>
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<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  <span class="comment">//}//end FRAMEIRQ handling</span></div>
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<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <span class="keywordflow">if</span>(HIRQ & <a class="code" href="max3421e_8h.html#ac915bfa0fd869c8c841c106fe468c3b5">bmCONDETIRQ</a>) {</div>
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<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  busprobe();</div>
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<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  HIRQ_sendback |= <a class="code" href="max3421e_8h.html#ac915bfa0fd869c8c841c106fe468c3b5">bmCONDETIRQ</a>;</div>
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<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  }</div>
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<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <span class="comment">/* End HIRQ interrupts handling, clear serviced IRQs */</span></div>
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<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  regWr(<a class="code" href="max3421e_8h.html#a9ab289252615caa2d19ceb4359d71a44">rHIRQ</a>, HIRQ_sendback);</div>
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<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  <span class="keywordflow">return</span>( HIRQ_sendback);</div>
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<div class="line"><a name="l00348"></a><span class="lineno"> 348</span> }</div>
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<div class="line"><a name="l00349"></a><span class="lineno"> 349</span> <span class="comment">//template< typename SS, typename INTR ></span></div>
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<div class="line"><a name="l00350"></a><span class="lineno"> 350</span> <span class="comment">//uint8_t MAX3421e< SS, INTR >::GpxHandler()</span></div>
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<div class="line"><a name="l00351"></a><span class="lineno"> 351</span> <span class="comment">//{</span></div>
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<div class="line"><a name="l00352"></a><span class="lineno"> 352</span> <span class="comment">// uint8_t GPINIRQ = regRd( rGPINIRQ ); //read GPIN IRQ register</span></div>
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<div class="line"><a name="l00359"></a><span class="lineno"> 359</span> <span class="comment"></span><span class="comment">// return( GPINIRQ );</span></div>
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<div class="line"><a name="l00360"></a><span class="lineno"> 360</span> <span class="comment">//}</span></div>
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<div class="line"><a name="l00361"></a><span class="lineno"> 361</span> </div>
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<div class="line"><a name="l00362"></a><span class="lineno"> 362</span> <span class="preprocessor">#endif //_USBHOST_H_</span></div>
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