1 | /*
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2 | Web Server
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3 |
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4 | A simple web server that shows the value of the analog input pins.
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5 | using an Arduino Wiznet Ethernet shield.
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6 |
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7 | Circuit:
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8 | * Ethernet shield is attached to the top of the Power Sensing Platform and Arduino is on the bottom of the Power Sensing Platform.
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9 | * Toroid current sensors are inputed through the Power Sensing Platform and are outputed through the Arduino analog pins A0 through A11.
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10 | * The ouput reading from the Arduino analog pins is a power reading measured in Watts.
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11 |
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12 | The Webserver Template
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13 | Created 18 Dec 2009
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14 | By David A. Mellis
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15 | Modified 9 Apr 2012
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16 | By Tom Igoe
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17 | Modified 12 Jun 2013
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18 | By: Pavan A. Desai
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19 |
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20 | */
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21 |
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22 | #include <SPI.h>
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23 | #include <Ethernet.h>
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24 |
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25 | // Enter a MAC address for your controller below.
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26 | // Newer Ethernet shields have a MAC address printed on a sticker on the shield
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27 | byte mac[] = { 0x90, 0xA2, 0xDA, 0x0D, 0x05, 0x52 }; // Mac address from Ethernet shield used for this project.
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28 |
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29 | EthernetClient client; //Creates a client which can connect to a specified internet IP address and port (defined in the client.connect() function).
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30 |
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31 | // Initialize the Ethernet client library
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32 | // with the IP address and port of the server
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33 | // that you want to connect to (port 80 is default for HTTP):
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34 |
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35 | EthernetServer server(80); // Port 80 default for HTTP
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36 |
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37 | void setup() {
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38 | // Open serial communications and wait for port to open:
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39 | Serial.begin(9600); // Used for communication between the Arduino board and a computer or other devices, for more info please visit the Arduino Webservser website.
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40 |
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41 | // Start the Ethernet connection:
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42 | /*
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43 | DHCP should auto assign the Arduino an IP Address
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44 | DHCP-based IP printer
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45 | This sketch uses the DHCP extensions to the Ethernet library
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46 | to get an IP address via DHCP and print the address obtained.
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47 | using an Arduino Wiznet Ethernet shield.
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48 | created 12 April 2011
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49 | modified 9 Apr 2012
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50 | By Tom Igoe
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51 | modified 26 Jun 2013
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52 | By Pavan Desai
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53 | */
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54 | if (Ethernet.begin(mac) == 0) {
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55 | Serial.println("Failed to configure Ethernet using DHCP");
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56 | // no point in carrying on, so do nothing forevermore:
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57 | for(;;)
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58 | ;
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59 | }
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60 | // print your local IP address:
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61 | Serial.print("My IP Address: ");
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62 | for (byte thisByte = 0; thisByte < 4; thisByte++) {
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63 | // print the value of each byte of the IP address:
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64 | Serial.print(Ethernet.localIP()[thisByte], DEC);
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65 | Serial.print(".");
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66 | }
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67 | Serial.println(); // The IP address assign to the Arduino by the webserver in Orbit Network is 10.41.250.19.
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68 |
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69 | }
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70 |
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71 |
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72 |
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73 | void loop() {
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74 |
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75 | analogReference(INTERNAL1V1); //Built in 1.1 voltage
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76 |
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77 | EthernetClient client = server.available(); // Try to get client
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78 | if (client) { // Checks to see if there is a client.
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79 | Serial.println("new client");
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80 | // An http request ends with a blank line
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81 | boolean currentLineIsBlank = true;
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82 | while (client.connected()) {
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83 | if (client.available()) { // Client data available to read
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84 | char c = client.read(); // Read 1 byte (character) from client
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85 | // Last line of client request is blank and ends with \n
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86 | // Respond to client only after last line received
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87 | Serial.write(c);
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88 | // if you've gotten to the end of the line (received a newline
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89 | // character) and the line is blank, the http request has ended,
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90 | // so you can send a reply
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91 | if (c == '\n' && currentLineIsBlank) {
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92 | // send a standard http response header
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93 |
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94 | client.println("HTTP/1.1 200 OK");
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95 | client.println("Content-Type: text/xml"); //Changed from html to xml
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96 | client.println("Connection: close");
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97 |
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98 | //add a meta refresh tag, so the browser pulls again every 5 seconds:
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99 | // client.println("<meta http-equiv=\"refresh\" content=\"5\">");
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100 | client.println("Refresh: 1");
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101 |
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102 | client.println();
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103 | client.println("<?xml version=\"1.0\"?>"); // Start of the XML output code, for more info on XML visit W3Schools website
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104 |
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105 | //Output the value of each analog input pin
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106 | client.println("<Data>"); // The XML Root Element
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107 | for (int analogChannel = 0; analogChannel < 12; analogChannel++) //Only using the first 12 analog pins out of 16 total.
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108 | {
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109 | int sensorReading = analogRead(analogChannel); // analogRead reads the reading at the analog channel (pins A0-A11) and outputs a resolution reading between 0 to 1023
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110 | // the Arduino has a 10-bit analog to digital converter so it will map input voltages between 0 and 5 volts into
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111 | // integer values between 0 and 1023.
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112 | client.println("<Reading>"); // The XML child element start and end
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113 | client.println("<AnalogPin>");
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114 | client.print(analogChannel);
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115 | client.println("</AnalogPin>");
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116 | client.println("<Output>");
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117 |
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118 | // If there is no input signal given to any Arduino pin, the output will still display a resolution reading due to the internal circuit noise.
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119 | // The following if statment will eliminate that noise, if the analog pin has no signal in the input then the if-statement will output a "0."
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120 | if (sensorReading == 0) //Displays a "0" for any analog pin that has to signal applied to its input
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121 | {client.print(sensorReading);} // prints the reading
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122 | else
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123 | {
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124 | if (analogChannel == 0)
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125 | {double d= 0.0;
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126 | d = static_cast<double>(sensorReading);
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127 | double power = 42 * square((((((((sensorReading/1024.0)*1100.0)/4.700)+2.468)/42)*40)/0.02623)/1000);
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128 | client.print(power); // Prints out Power Reading in Watts
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129 |
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130 | //double voltage = (((sensorReading/1024.0)*1100.0)/4.700+2.468); //Prints out Voltage Reading
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131 | //client.print(voltage); // Prints out Voltage Reading in Volts
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132 | }
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133 | else if (analogChannel == 1)
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134 | {double d= 0.0;
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135 | d = static_cast<double>(sensorReading);
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136 | double power = 42 * square((((((((sensorReading/1024.0)*1100.0)/4.700)+3.784)/42)*40)/0.02623)/1000);
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137 | client.print(power); // Prints out Power Reading in Watts
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138 |
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139 | //double voltage = (((sensorReading/1024.0)*1100.0)/4.700+3.784);
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140 | //client.print(voltage); // Prints out Voltage Reading in Volts
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141 | }
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142 | else if (analogChannel == 2)
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143 | {double d= 0.0;
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144 | d = static_cast<double>(sensorReading);
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145 | double power = 42 * square((((((((sensorReading/1024.0)*1100.0)/4.700)+3.841)/42)*40)/0.02623)/1000);
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146 | client.print(power); // Prints out Power Reading in Watts
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147 |
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148 | //double voltage = (((sensorReading/1024.0)*1100.0)/4.700+3.841);
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149 | //client.print(voltage); // Prints out Voltage Reading in Volts
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150 | }
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151 | else if (analogChannel == 3)
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152 | {double d= 0.0;
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153 | d = static_cast<double>(sensorReading);
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154 | double power = 42 * square((((((((sensorReading/1024.0)*1100.0)/4.700)+3.208)/42)*40)/0.02623)/1000);
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155 | client.print(power); // Prints out Power Reading in Watts
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156 |
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157 | //double voltage = (((sensorReading/1024.0)*1100.0)/4.700+3.208);
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158 | //client.print(voltage); // Prints out Voltage Reading in Volts
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159 | }
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160 | else if (analogChannel == 4)
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161 | {double d= 0.0;
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162 | d = static_cast<double>(sensorReading);
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163 | double power = 42 * square((((((((sensorReading/1024.0)*1100.0)/4.700)+4.443)/42)*40)/0.02623)/1000);
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164 | client.print(power); // Prints out Power Reading in Watts
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165 |
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166 | //double voltage = (((sensorReading/1024.0)*1100.0)/4.700+4.443);
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167 | //client.print(voltage); // Prints out Voltage Reading in Volts
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168 | }
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169 | else if (analogChannel == 5)
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170 | {double d= 0.0;
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171 | d = static_cast<double>(sensorReading);
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172 | double power = 42 * square((((((((sensorReading/1024.0)*1100.0)/4.700)+2.643)/42)*40)/0.02623)/1000);
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173 | client.print(power); // Prints out Power Reading in Watts
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174 |
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175 | //double voltage = (((sensorReading/1024.0)*1100.0)/4.700+2.643);
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176 | //client.print(voltage); // Prints out Voltage Reading in Volts
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177 | }
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178 | else if (analogChannel == 6)
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179 | {double d= 0.0;
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180 | d = static_cast<double>(sensorReading);
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181 | double power = 42 * square((((((((sensorReading/1024.0)*1100.0)/4.700)+4.347)/42)*40)/0.02623)/1000);
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182 | client.print(power); // Prints out Power Reading in Watts
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183 |
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184 | //double voltage = (((sensorReading/1024.0)*1100.0)/4.700+4.347);
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185 | //client.print(voltage); // Prints out Voltage Reading in Volts
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186 | }
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187 | else if (analogChannel == 7)
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188 | {double d= 0.0;
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189 | d = static_cast<double>(sensorReading);
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190 | double power = 42 * square((((((((sensorReading/1024.0)*1100.0)/4.700)+3.093)/42)*40)/0.02623)/1000);
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191 | client.print(power); // Prints out Power Reading in Watts
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192 |
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193 | //double voltage = (((sensorReading/1024.0)*1100.0)/4.700+3.093);
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194 | //client.print(voltage); // Prints out Voltage Reading in Volts
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195 | }
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196 | else if (analogChannel == 8)
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197 | {double d= 0.0;
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198 | d = static_cast<double>(sensorReading);
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199 | double power = 42 * square((((((((sensorReading/1024.0)*1100.0)/4.700)+3.309)/42)*40)/0.02623)/1000);
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200 | client.print(power); // Prints out Power Reading in Watts
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201 |
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202 | //double voltage = (((sensorReading/1024.0)*1100.0)/4.700+3.309);
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203 | //client.print(voltage); // Prints out Voltage Reading in Volts
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204 | }
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205 | else if (analogChannel == 9)
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206 | {double d= 0.0;
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207 | d = static_cast<double>(sensorReading);
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208 | double power = 42 * square((((((((sensorReading/1024.0)*1100.0)/4.700)+2.964)/42)*40)/0.02623)/1000);
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209 | client.print(power); // Prints out Power Reading in Watts
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210 |
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211 | //double voltage = (((sensorReading/1024.0)*1100.0)/4.700+2.964);
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212 | //client.print(voltage); // Prints out Voltage Reading in Volts
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213 | }
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214 | else if (analogChannel == 10)
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215 | {double d= 0.0;
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216 | d = static_cast<double>(sensorReading);
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217 | double power = 42 * square((((((((sensorReading/1024.0)*1100.0)/4.700)+3.330)/42)*40)/0.02623)/1000);
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218 | client.print(power); // Prints out Power Reading in Watts
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219 |
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220 | //double voltage = (((sensorReading/1024.0)*1100.0)/4.700+3.330);
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221 | //client.print(voltage); // Prints out Voltage Reading in Volts
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222 | }
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223 | else if (analogChannel == 11)
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224 | {double d= 0.0;
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225 | d = static_cast<double>(sensorReading);
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226 | double power = 42 * square((((((((sensorReading/1024.0)*1100.0)/4.700)+2.935)/42)*40)/0.02623)/1000);
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227 | client.print(power); // Prints out Power Reading in Watts
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228 |
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229 | //double voltage = (((sensorReading/1024.0)*1100.0)/4.700+2.935);
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230 | //client.print(voltage); // Prints out Voltage Reading in Volts
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231 | }
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232 | }
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233 | client.println("</Output>"); //The XML Child Element tags end
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234 | client.println("</Reading>");
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235 | }
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236 | client.println("</Data>"); // The XML Root Element Tag ends
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237 | break;
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238 | }
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239 |
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240 | if (c == '\n') {
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241 | // you're starting a new line
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242 | currentLineIsBlank = true;
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243 | }
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244 | else if (c != '\r') {
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245 | // you've gotten a character on the current line
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246 | currentLineIsBlank = false;
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247 | }
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248 | }
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249 | }
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250 | // give the web browser time to receive the data
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251 | delay(1);
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252 | // close the connection:
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253 | client.stop();
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254 | Serial.println("client disonnected");
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255 | }
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256 | }
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257 |
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258 |
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