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<title>IoT-MBBR (masterthesis): firmware/EFM32HG222F64_iot-mbbr/src/SHT30.c Source File</title>
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<div id="projectbrief">Masterthesis upgrading a Moving Bed BioReactor with extra sensors and cloud connectivity.</div>
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<a href="SHT30_8c.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">/***************************************************************************/</span><span class="comment">/**</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * @file SHT30.c</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * @brief SHT30 functionality.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * @version 1.0</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * @author Brecht Van Eeckhoudt</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> *</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * ******************************************************************************</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> *</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * @section Versions</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * @li v1.0: Initial version.</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> *</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * ******************************************************************************</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> *</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * @section License</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> *</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * **Copyright (C) 2020 - Brecht Van Eeckhoudt**</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> *</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * This program is free software: you can redistribute it and/or modify</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * it under the terms of the **GNU General Public License** as published by</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * the Free Software Foundation, either **version 3** of the License, or</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * (at your option) any later version.</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> *</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * This program is distributed in the hope that it will be useful,</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * GNU General Public License for more details.</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> *</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> * *A copy of the GNU General Public License can be found in the `LICENSE`</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> * file along with this source code.*</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> *</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> * @n</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> *</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> * Some methods use code obtained from examples from [Silicon Labs' GitHub](https://github.com/SiliconLabs/peripheral_examples).</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> * These sections are licensed under the Silabs License Agreement. See the file</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> * "Silabs_License_Agreement.txt" for details. Before using this software for</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> * any purpose, you must agree to the terms of that agreement.</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> *</span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> ******************************************************************************/</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="preprocessor">#include <stdint.h></span> <span class="comment">/* (u)intXX_t */</span></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="preprocessor">#include <stdbool.h></span> <span class="comment">/* "bool", "true", "false" */</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="preprocessor">#include "em_device.h"</span> <span class="comment">/* Include necessary MCU-specific header file */</span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor">#include "em_cmu.h"</span> <span class="comment">/* Clock management unit */</span></div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="preprocessor">#include "em_gpio.h"</span> <span class="comment">/* General Purpose IO */</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="preprocessor">#include "em_i2c.h"</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor">#include "<a class="code" href="SHT30_8h.html">SHT30.h</a>"</span> <span class="comment">/* Corresponding header file */</span></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor">#include "<a class="code" href="debug__dbprint_8h.html">debug_dbprint.h</a>"</span> <span class="comment">/* Enable or disable printing to UART */</span></div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor">#include "<a class="code" href="pin__mapping_8h.html">pin_mapping.h</a>"</span> <span class="comment">/* PORT and PIN definitions */</span></div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor">#include "<a class="code" href="i2c_8h.html">i2c.h</a>"</span> <span class="comment">/* I2C initialization */</span></div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor">#include "<a class="code" href="delay_8h.html">delay.h</a>"</span> <span class="comment">/* Delay functionality */</span></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment">/* Local definitions */</span></div><div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="SHT30_8c.html#a719dd6d2844a7934d2152f7c76c5192e"> 57</a></span> <span class="preprocessor">#define SHT30_ADDRESS 0x44 </span><span class="comment">/* (7 bit notation) */</span><span class="preprocessor"></span></div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment">/* Sensor commands */</span></div><div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="SHT30_8c.html#abde7d139b798f7b9ce86e0ea4cdfb018"> 60</a></span> <span class="preprocessor">#define SOFT_RESET_CMD 0x30A2</span></div><div class="line"><a name="l00061"></a><span class="lineno"><a class="line" href="SHT30_8c.html#a579111fdbc2ed1443e62d19a44fac3ae"> 61</a></span> <span class="preprocessor">#define HIGH_REP_MEAS_CMD 0x2400 </span><span class="comment">/* High repeatablility, no clock stretching */</span><span class="preprocessor"></span></div><div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="SHT30_8c.html#a78e24905e7dce2aa99d49f001b3529ab"> 62</a></span> <span class="preprocessor">#define SEND_MEASUREMENT_COMMAND 0x2C</span></div><div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="SHT30_8c.html#ad0f70a7d62edc02779a0a11017d5f6ed"> 63</a></span> <span class="preprocessor">#define HIGH_REPEATABILITY_COMMAND 0x06</span></div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment">/* Local variables */</span></div><div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="SHT30_8c.html#a06fa93f3b67f19cf4ca1eaf90be63bd6"> 67</a></span> <span class="keywordtype">bool</span> <a class="code" href="SHT30_8c.html#a06fa93f3b67f19cf4ca1eaf90be63bd6">SHT30_reset</a> = <span class="keyword">false</span>;</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment">/**************************************************************************/</span><span class="comment">/**</span></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"> * @brief</span></div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"> * Soft reset the SHT30.</span></div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"> *</span></div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"> * @details</span></div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment"> * This method also initializes i2C if necessary.</span></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment"> *</span></div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"> * @note</span></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment"> * This is a static method because it's only internally used in this file</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment"> * and called by other methods if necessary.</span></div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment"> *</span></div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment"> * @return</span></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment"> * @return</span></div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment"> * @li `0` - Byte written correctly.</span></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment"> * @li `-1` - `i2cTransferNack`, NACK received during transfer.</span></div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="comment"> * @li `-2` - `i2cTransferBusErr`, Bus error during transfer (misplaced START/STOP).</span></div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="comment"> * @li `-3` - `i2cTransferArbLost`, Arbitration lost during transfer.</span></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment"> * @li `-4` - `i2cTransferUsageFault`, Usage fault.</span></div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"> * @li `-5` - `i2cTransferSwFault`, SW fault.</span></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment"> * @li `-6` - Coudldn't configure I2C.</span></div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment"> *****************************************************************************/</span></div><div class="line"><a name="l00091"></a><span class="lineno"><a class="line" href="SHT30_8c.html#a02a1c76cbe8211334129115aa83d56bc"> 91</a></span> <a class="code" href="vl53l1__types_8h.html#aef44329758059c91c76d334e8fc09700">int8_t</a> <a class="code" href="SHT30_8c.html#a02a1c76cbe8211334129115aa83d56bc">softResetSHT30</a> (<span class="keywordtype">void</span>)</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> {</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">/* Initialize I2C if not already the case */</span></div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">if</span> (<a class="code" href="i2c_8h.html#a640cbfac112d88a8b3795b1fbf5c8cc0">initI2C</a>() != 0) <span class="keywordflow">return</span> (-6);</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="comment">/* Separate command in two bytes (ANDing with a mask and shifting one byte (8 bits) per position) */</span></div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <a class="code" href="vl53l1__types_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> cmd_buf[2] = {(<a class="code" href="SHT30_8c.html#abde7d139b798f7b9ce86e0ea4cdfb018">SOFT_RESET_CMD</a> >> 8), (<a class="code" href="SHT30_8c.html#abde7d139b798f7b9ce86e0ea4cdfb018">SOFT_RESET_CMD</a> & 0x00FF)};</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="comment">/* Transfer structure */</span></div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  I2C_TransferSeq_TypeDef i2cTransfer;</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  I2C_TransferReturn_TypeDef result;</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="comment">/* Initializing I2C transfer */</span></div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  i2cTransfer.addr = <a class="code" href="SHT30_8c.html#a719dd6d2844a7934d2152f7c76c5192e">SHT30_ADDRESS</a> << 1; <span class="comment">/* Left shift so we go to 8 bit notation instead of 7 */</span></div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  i2cTransfer.flags = I2C_FLAG_WRITE; <span class="comment">/* Data written from buf[0].data */</span></div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  i2cTransfer.buf[0].data = cmd_buf;</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  i2cTransfer.buf[0].len = 2; <span class="comment">/* Command is two bytes */</span></div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  result = I2C_TransferInit(<a class="code" href="pin__mapping_8h.html#a55b277fd20b74f557897aad3b80160cc">BUS_I2C</a>, &i2cTransfer);</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="comment">/* Transmitting I2C data (busy-wait until transfer is complete) */</span></div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">while</span> (result == i2cTransferInProgress) result = I2C_Transfer(<a class="code" href="pin__mapping_8h.html#a55b277fd20b74f557897aad3b80160cc">BUS_I2C</a>);</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="preprocessor">#if DEBUG_DBPRINT == 1 </span><span class="comment">/* DEBUG_DBPRINT */</span><span class="preprocessor"></span></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <a class="code" href="dbprint_8c.html#acb5d4e1082c625ad85d835d4e053d4d8">dbinfo</a>(<span class="stringliteral">"Soft reset SHT30"</span>);</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="preprocessor">#endif </span><span class="comment">/* DEBUG_DBPRINT */</span><span class="preprocessor"></span></div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="comment">/* Indicate that SHT30 has been soft reset */</span></div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <a class="code" href="SHT30_8c.html#a06fa93f3b67f19cf4ca1eaf90be63bd6">SHT30_reset</a> = <span class="keyword">true</span>;</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span> </div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">return</span> (result);</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span> }</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span> </div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment">/**************************************************************************/</span><span class="comment">/**</span></div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment"> * @brief</span></div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="comment"> * Do I2C transfers to get the temperature from the SHT30.</span></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="comment"> *</span></div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment"> * @details</span></div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"> * This method also initializes i2C if necessary.</span></div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment"> *</span></div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment"> * @return</span></div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment"> * The temperature (*1000).</span></div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment"> *****************************************************************************/</span></div><div class="line"><a name="l00134"></a><span class="lineno"><a class="line" href="SHT30_8c.html#a0762b86b42368e94a8f33f1a9be8f004"> 134</a></span> <a class="code" href="vl53l1__types_8h.html#a32f2e37ee053cf2ce8ca28d1f74630e5">int32_t</a> <a class="code" href="SHT30_8c.html#a0762b86b42368e94a8f33f1a9be8f004">SHT30_readTemp</a> (<span class="keywordtype">void</span>)</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span> {</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="comment">/* Initialize I2C if not already the case */</span></div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordflow">if</span> (<a class="code" href="i2c_8h.html#a640cbfac112d88a8b3795b1fbf5c8cc0">initI2C</a>() != 0) <span class="keywordflow">return</span> (-6);</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span> </div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="comment">/* Separate command in two bytes (ANDing with a mask and shifting one byte (8 bits) per position) */</span></div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <a class="code" href="vl53l1__types_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> cmd_buf[2] = {(<a class="code" href="SHT30_8c.html#a579111fdbc2ed1443e62d19a44fac3ae">HIGH_REP_MEAS_CMD</a> >> 8), (<a class="code" href="SHT30_8c.html#a579111fdbc2ed1443e62d19a44fac3ae">HIGH_REP_MEAS_CMD</a> & 0x00FF)};</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span> </div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="comment">/* Transfer structure */</span></div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  I2C_TransferSeq_TypeDef i2cTransfer;</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  I2C_TransferReturn_TypeDef result;</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="comment">/* Create buffer for received bytes */</span></div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <a class="code" href="vl53l1__types_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> data_buf[6] = {0, 0, 0, 0, 0, 0};</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span> </div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="comment">// data_buf[6] = cTemp msb, cTemp lsb, cTemp crc, humidity msb, humidity lsb, humidity crc</span></div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="comment">// float cTemp = ((((data_buf[0] * 256.0) + data_buf[1]) * 175) / 65535.0) - 45;</span></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="comment">// float humidity = ((((data_buf[3] * 256.0) + data_buf[4]) * 100) / 65535.0);</span></div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span> </div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="comment">/* Initializing I2C transfer */</span></div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  i2cTransfer.addr = <a class="code" href="SHT30_8c.html#a719dd6d2844a7934d2152f7c76c5192e">SHT30_ADDRESS</a> << 1; <span class="comment">/* Left shift so we go to 8 bit notation instead of 7 */</span></div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  i2cTransfer.flags = I2C_FLAG_WRITE; <span class="comment">/* Data written from buf[0].data */</span></div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  i2cTransfer.buf[0].data = cmd_buf;</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  i2cTransfer.buf[0].len = 2; <span class="comment">/* Command is two bytes */</span></div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  result = I2C_TransferInit(<a class="code" href="pin__mapping_8h.html#a55b277fd20b74f557897aad3b80160cc">BUS_I2C</a>, &i2cTransfer);</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span> </div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="comment">/* Transmitting I2C data (busy-wait until transfer is complete) */</span></div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">while</span> (result == i2cTransferInProgress) result = I2C_Transfer(<a class="code" href="pin__mapping_8h.html#a55b277fd20b74f557897aad3b80160cc">BUS_I2C</a>);</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span> </div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <a class="code" href="delay_8h.html#adb46f4276f5ddf111153701858f85df6">delay</a>(10);</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span> </div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="comment">/* Initializing I2C transfer */</span></div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  i2cTransfer.flags = I2C_FLAG_READ; <span class="comment">/* Data read into buf[0].data */</span></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  i2cTransfer.buf[0].data = data_buf;</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  i2cTransfer.buf[0].len = 6; <span class="comment">/* Data itself is 6 bytes */</span></div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  result = I2C_TransferInit(<a class="code" href="pin__mapping_8h.html#a55b277fd20b74f557897aad3b80160cc">BUS_I2C</a>, &i2cTransfer);</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span> </div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="comment">/* Transmitting I2C data (busy-wait until transfer is complete) */</span></div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordflow">while</span> (result == i2cTransferInProgress) result = I2C_Transfer(<a class="code" href="pin__mapping_8h.html#a55b277fd20b74f557897aad3b80160cc">BUS_I2C</a>);</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordflow">return</span> ((<a class="code" href="vl53l1__types_8h.html#a32f2e37ee053cf2ce8ca28d1f74630e5">int32_t</a>)((((((data_buf[0] * 256.0) + data_buf[1]) * 175) / 65535.0) - 45) * 1000));</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span> }</div><div class="ttc" id="vl53l1__types_8h_html_aef44329758059c91c76d334e8fc09700"><div class="ttname"><a href="vl53l1__types_8h.html#aef44329758059c91c76d334e8fc09700">int8_t</a></div><div class="ttdeci">signed char int8_t</div><div class="ttdoc">Typedef defining 8 bit char type. The developer should modify this to suit the platform being deploye...</div><div class="ttdef"><b>Definition:</b> <a href="vl53l1__types_8h_source.html#l00103">vl53l1_types.h:103</a></div></div>
<div class="ttc" id="SHT30_8c_html_a0762b86b42368e94a8f33f1a9be8f004"><div class="ttname"><a href="SHT30_8c.html#a0762b86b42368e94a8f33f1a9be8f004">SHT30_readTemp</a></div><div class="ttdeci">int32_t SHT30_readTemp(void)</div><div class="ttdoc">Do I2C transfers to get the temperature from the SHT30. </div><div class="ttdef"><b>Definition:</b> <a href="SHT30_8c_source.html#l00134">SHT30.c:134</a></div></div>
<div class="ttc" id="SHT30_8c_html_a06fa93f3b67f19cf4ca1eaf90be63bd6"><div class="ttname"><a href="SHT30_8c.html#a06fa93f3b67f19cf4ca1eaf90be63bd6">SHT30_reset</a></div><div class="ttdeci">bool SHT30_reset</div><div class="ttdef"><b>Definition:</b> <a href="SHT30_8c_source.html#l00067">SHT30.c:67</a></div></div>
<div class="ttc" id="pin__mapping_8h_html_a55b277fd20b74f557897aad3b80160cc"><div class="ttname"><a href="pin__mapping_8h.html#a55b277fd20b74f557897aad3b80160cc">BUS_I2C</a></div><div class="ttdeci">#define BUS_I2C</div><div class="ttdef"><b>Definition:</b> <a href="pin__mapping_8h_source.html#l00053">pin_mapping.h:53</a></div></div>
<div class="ttc" id="dbprint_8c_html_acb5d4e1082c625ad85d835d4e053d4d8"><div class="ttname"><a href="dbprint_8c.html#acb5d4e1082c625ad85d835d4e053d4d8">dbinfo</a></div><div class="ttdeci">void dbinfo(char *message)</div><div class="ttdoc">Print an info string (char array) to USARTx and go to the next line. </div><div class="ttdef"><b>Definition:</b> <a href="dbprint_8c_source.html#l00505">dbprint.c:505</a></div></div>
<div class="ttc" id="SHT30_8c_html_a719dd6d2844a7934d2152f7c76c5192e"><div class="ttname"><a href="SHT30_8c.html#a719dd6d2844a7934d2152f7c76c5192e">SHT30_ADDRESS</a></div><div class="ttdeci">#define SHT30_ADDRESS</div><div class="ttdef"><b>Definition:</b> <a href="SHT30_8c_source.html#l00057">SHT30.c:57</a></div></div>
<div class="ttc" id="vl53l1__types_8h_html_a32f2e37ee053cf2ce8ca28d1f74630e5"><div class="ttname"><a href="vl53l1__types_8h.html#a32f2e37ee053cf2ce8ca28d1f74630e5">int32_t</a></div><div class="ttdeci">int int32_t</div><div class="ttdoc">Typedef defining 32 bit int type. The developer should modify this to suit the platform being deploye...</div><div class="ttdef"><b>Definition:</b> <a href="vl53l1__types_8h_source.html#l00083">vl53l1_types.h:83</a></div></div>
<div class="ttc" id="pin__mapping_8h_html"><div class="ttname"><a href="pin__mapping_8h.html">pin_mapping.h</a></div><div class="ttdoc">The pin definitions for the custom board. </div></div>
<div class="ttc" id="delay_8h_html"><div class="ttname"><a href="delay_8h.html">delay.h</a></div><div class="ttdoc">Delay functionality. </div></div>
<div class="ttc" id="debug__dbprint_8h_html"><div class="ttname"><a href="debug__dbprint_8h.html">debug_dbprint.h</a></div><div class="ttdoc">Enable or disable printing to UART with dbprint. </div></div>
<div class="ttc" id="SHT30_8c_html_a02a1c76cbe8211334129115aa83d56bc"><div class="ttname"><a href="SHT30_8c.html#a02a1c76cbe8211334129115aa83d56bc">softResetSHT30</a></div><div class="ttdeci">int8_t softResetSHT30(void)</div><div class="ttdoc">Soft reset the SHT30. </div><div class="ttdef"><b>Definition:</b> <a href="SHT30_8c_source.html#l00091">SHT30.c:91</a></div></div>
<div class="ttc" id="delay_8h_html_adb46f4276f5ddf111153701858f85df6"><div class="ttname"><a href="delay_8h.html#adb46f4276f5ddf111153701858f85df6">delay</a></div><div class="ttdeci">void delay(uint32_t msDelay)</div><div class="ttdoc">Wait for a certain amount of milliseconds in EM2/3. </div><div class="ttdef"><b>Definition:</b> <a href="delay_8c_source.html#l00124">delay.c:124</a></div></div>
<div class="ttc" id="i2c_8h_html_a640cbfac112d88a8b3795b1fbf5c8cc0"><div class="ttname"><a href="i2c_8h.html#a640cbfac112d88a8b3795b1fbf5c8cc0">initI2C</a></div><div class="ttdeci">int8_t initI2C(void)</div><div class="ttdoc">I2C initialization (if not already initialized). </div><div class="ttdef"><b>Definition:</b> <a href="i2c_8c_source.html#l00066">i2c.c:66</a></div></div>
<div class="ttc" id="SHT30_8h_html"><div class="ttname"><a href="SHT30_8h.html">SHT30.h</a></div><div class="ttdoc">SHT30 functionality. </div></div>
<div class="ttc" id="SHT30_8c_html_abde7d139b798f7b9ce86e0ea4cdfb018"><div class="ttname"><a href="SHT30_8c.html#abde7d139b798f7b9ce86e0ea4cdfb018">SOFT_RESET_CMD</a></div><div class="ttdeci">#define SOFT_RESET_CMD</div><div class="ttdef"><b>Definition:</b> <a href="SHT30_8c_source.html#l00060">SHT30.c:60</a></div></div>
<div class="ttc" id="vl53l1__types_8h_html_aba7bc1797add20fe3efdf37ced1182c5"><div class="ttname"><a href="vl53l1__types_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a></div><div class="ttdeci">unsigned char uint8_t</div><div class="ttdoc">Typedef defining 8 bit unsigned char type. The developer should modify this to suit the platform bein...</div><div class="ttdef"><b>Definition:</b> <a href="vl53l1__types_8h_source.html#l00098">vl53l1_types.h:98</a></div></div>
<div class="ttc" id="SHT30_8c_html_a579111fdbc2ed1443e62d19a44fac3ae"><div class="ttname"><a href="SHT30_8c.html#a579111fdbc2ed1443e62d19a44fac3ae">HIGH_REP_MEAS_CMD</a></div><div class="ttdeci">#define HIGH_REP_MEAS_CMD</div><div class="ttdef"><b>Definition:</b> <a href="SHT30_8c_source.html#l00061">SHT30.c:61</a></div></div>
<div class="ttc" id="i2c_8h_html"><div class="ttname"><a href="i2c_8h.html">i2c.h</a></div><div class="ttdoc">I2C functionality. </div></div>
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