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<div id="projectname">tinyusb
&#160;<span id="projectnumber">0.4</span>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/*****************************************************************************</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> * Copyright(C) 2011, Embedded Artists AB</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> ******************************************************************************</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> * Software that is described herein is for illustrative purposes only</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> * which provides customers with programming information regarding the</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"> * products. This software is supplied &quot;AS IS&quot; without any warranties.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> * Embedded Artists AB assumes no responsibility or liability for the</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> * use of the software, conveys no license or title under any patent,</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> * copyright, or mask work right to the product. Embedded Artists AB</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> * reserves the right to make changes in the software without</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> * notification. Embedded Artists AB also make no representation or</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> * warranty that such application will be suitable for the specified</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> * use without further testing or modification.</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment"> *****************************************************************************/</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="comment"> * NOTE: I2C must have been initialized before calling any functions in this</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="comment"> * file.</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="comment">/******************************************************************************</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="comment"> * Includes</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="comment"> *****************************************************************************/</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="preprocessor">#include &quot;../../board.h&quot;</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="preprocessor">#if BOARD == BOARD_EA4357</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="preprocessor">#include &lt;string.h&gt;</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="preprocessor">#include &lt;stdio.h&gt;</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="preprocessor">#include &quot;lpc_types.h&quot;</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="preprocessor">#include &quot;lpc43xx_i2c.h&quot;</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;<span class="comment">/******************************************************************************</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;<span class="comment"> * Defines and typedefs</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;<span class="comment"> *****************************************************************************/</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="preprocessor">#define I2C_PORT (LPC_I2C0)</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;<span class="preprocessor">#define LM75A_I2C_ADDR (0x48)</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;<span class="preprocessor">#define LM75A_CMD_TEMP 0x00</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;<span class="preprocessor">#define I2CDEV LPC_I2C2</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;<span class="comment">/******************************************************************************</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;<span class="comment"> * External global variables</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;<span class="comment"> *****************************************************************************/</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;<span class="comment">/******************************************************************************</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;<span class="comment"> * Local variables</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;<span class="comment"> *****************************************************************************/</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;<span class="comment">/******************************************************************************</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;<span class="comment"> * Local Functions</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;<span class="comment"> *****************************************************************************/</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;<span class="keyword">static</span> Status I2CWrite(uint32_t addr, uint8_t* buf, uint32_t len) </div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;{</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; I2C_M_SETUP_Type i2cData;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; i2cData.sl_addr7bit = addr;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; i2cData.tx_data = buf;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; i2cData.tx_length = len;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; i2cData.rx_data = NULL;</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; i2cData.rx_length = 0;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; i2cData.retransmissions_max = 3;</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; <span class="keywordflow">return</span> I2C_MasterTransferData(I2C_PORT, &amp;i2cData, I2C_TRANSFER_POLLING);</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;}</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;<span class="keyword">static</span> Status I2CRead(uint32_t addr, uint8_t* buf, uint32_t len) </div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;{</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; I2C_M_SETUP_Type i2cData;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; i2cData.sl_addr7bit = addr;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; i2cData.tx_data = NULL;</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; i2cData.tx_length = 0;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; i2cData.rx_data = buf;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; i2cData.rx_length = len;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; i2cData.retransmissions_max = 3;</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; <span class="keywordflow">return</span> I2C_MasterTransferData(I2C_PORT, &amp;i2cData, I2C_TRANSFER_POLLING);</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;}</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;<span class="comment">/******************************************************************************</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;<span class="comment"> * Public Functions</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160;<span class="comment"> *****************************************************************************/</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;<span class="comment">/******************************************************************************</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;<span class="comment"> * Description:</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;<span class="comment"> * Initialize the EEPROM Driver</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;<span class="comment"> *****************************************************************************/</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;<span class="keywordtype">void</span> lm75a_init (<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;{</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;}</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;<span class="comment">/******************************************************************************</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;<span class="comment"> * Description:</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;<span class="comment"> * Read the temperature</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;<span class="comment"> * Params: None</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160;<span class="comment"> * Returns:</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;<span class="comment"> * The measured temperature x 100, i.e. 26.50 degrees returned as 2650</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;<span class="comment"> *****************************************************************************/</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160;int32_t lm75a_readTemp(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160;{</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; uint8_t temp[2];</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; int16_t t = 0;</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; I2CWrite(LM75A_I2C_ADDR, LM75A_CMD_TEMP, 1);</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; I2CRead(LM75A_I2C_ADDR, temp, 2);</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; <span class="comment">/* 11 MSB bits used. Celcius is calculated as Temp data * 1/8 */</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; t = ((temp[0] &lt;&lt; 8) | (temp[1]));</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160;</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; <span class="keywordflow">return</span> ((t * 100) &gt;&gt; 8);</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;}</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160;<span class="preprocessor">#endif</span></div>
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