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Weather station with ModBus over RS-485
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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"> ModbusSerial.h - Header for ModbusSerial Library</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> Copyright (C) 2014 André Sarmento Barbosa</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">*/</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="preprocessor">#include &lt;Arduino.h&gt;</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="preprocessor">#include &lt;Modbus.h&gt;</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;</div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="preprocessor">#ifndef MODBUSSERIAL_H</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor">#define MODBUSSERIAL_H</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;</div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment">//#define USE_SOFTWARE_SERIAL</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;</div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#ifdef USE_SOFTWARE_SERIAL</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="preprocessor">#include &lt;SoftwareSerial.h&gt;</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;<span class="keyword">enum</span> MB_PARITY {</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; 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Stream* _port;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="keywordtype">long</span> _baud;</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; byte _format;</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; <span class="keywordtype">int</span> _txPin;</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> _t15; <span class="comment">// inter character time out</span></div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> _t35; <span class="comment">// frame delay</span></div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; byte _slaveId;</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; word calcCrc(byte address, byte* pduframe, byte pdulen);</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; 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byte <a class="code" href="classModbusSerial.html#adefaff8d3e8f4cfc1d90c9b52d880262">getSlaveId</a>();</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160;};</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160;</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160;<span class="preprocessor">#ifndef __DOXYGEN__</span></div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160;<span class="comment">/* Table of CRC values for high–order byte */</span></div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;<span class="keyword">const</span> byte _auchCRCHi[] = {</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; 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0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97, 0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C,</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; 0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E, 0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98, 0x88,</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; 0x48, 0x49, 0x89, 0x4B, 0x8B, 0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; 0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 0x43, 0x83, 0x41, 0x81, 0x80,</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; 0x40};</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160;</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160;<span class="preprocessor">#endif //MODBUSSERIAL_H</span></div><div class="ttc" id="classModbusSerial_html_aefa9a7f9a910a311bfcd5110a6a8ab71"><div class="ttname"><a href="classModbusSerial.html#aefa9a7f9a910a311bfcd5110a6a8ab71">ModbusSerial::config</a></div><div class="ttdeci">bool config(HardwareSerial *port, long baud, byte parity=MB_PARITY_EVEN, int txenPin=-1)</div><div class="ttdoc">Connect an ModbusSerial object to a hardware serial port. </div></div>
<div class="ttc" id="classModbusSerial_html_ad47e2b6a70d42a106a1a55a515e2f33a"><div class="ttname"><a href="classModbusSerial.html#ad47e2b6a70d42a106a1a55a515e2f33a">ModbusSerial::task</a></div><div class="ttdeci">void task()</div><div class="ttdoc">Task that performs all operations on MODBUS. </div></div>
<div class="ttc" id="classModbusSerial_html_add48c6a2b436e600865e0cf63ed0aafc"><div class="ttname"><a href="classModbusSerial.html#add48c6a2b436e600865e0cf63ed0aafc">ModbusSerial::ModbusSerial</a></div><div class="ttdeci">ModbusSerial()</div><div class="ttdoc">Default constructor. </div></div>
<div class="ttc" id="classModbusSerial_html_ae7b2f3574d102b26a1de084cb345b6cc"><div class="ttname"><a href="classModbusSerial.html#ae7b2f3574d102b26a1de084cb345b6cc">ModbusSerial::send</a></div><div class="ttdeci">bool send(byte *frame)</div></div>
<div class="ttc" id="classModbusSerial_html_a3fb991a7b8d0d9766889e2cad7fca115"><div class="ttname"><a href="classModbusSerial.html#a3fb991a7b8d0d9766889e2cad7fca115">ModbusSerial::receive</a></div><div class="ttdeci">bool receive(byte *frame)</div></div>
<div class="ttc" id="classModbusSerial_html"><div class="ttname"><a href="classModbusSerial.html">ModbusSerial</a></div><div class="ttdoc">Modbus over serial line Class. </div><div class="ttdef"><b>Definition:</b> <a href="ModbusSerial_8h_source.html#l00054">ModbusSerial.h:54</a></div></div>
<div class="ttc" id="classModbus_html"><div class="ttname"><a href="classModbus.html">Modbus</a></div><div class="ttdoc">Modbus base class. </div><div class="ttdef"><b>Definition:</b> <a href="Modbus_8h_source.html#l00053">Modbus.h:53</a></div></div>
<div class="ttc" id="classModbusSerial_html_adefaff8d3e8f4cfc1d90c9b52d880262"><div class="ttname"><a href="classModbusSerial.html#adefaff8d3e8f4cfc1d90c9b52d880262">ModbusSerial::getSlaveId</a></div><div class="ttdeci">byte getSlaveId()</div><div class="ttdoc">Return slave identifier. </div></div>
<div class="ttc" id="classModbusSerial_html_a2b727d4d516177e698db6e49729624d8"><div class="ttname"><a href="classModbusSerial.html#a2b727d4d516177e698db6e49729624d8">ModbusSerial::setSlaveId</a></div><div class="ttdeci">bool setSlaveId(byte slaveId)</div><div class="ttdoc">Change the value of slave identifier. </div></div>
<div class="ttc" id="classModbusSerial_html_a69850777f84662664dd17e137250e3b0"><div class="ttname"><a href="classModbusSerial.html#a69850777f84662664dd17e137250e3b0">ModbusSerial::sendPDU</a></div><div class="ttdeci">bool sendPDU(byte *pduframe)</div></div>
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