1 | // ----------------------------------------------------------------------
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2 |
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3 | #include <SPI.h>
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4 | #include <Ethernet.h>
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5 | #include <stdio.h>
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6 | #define MAX_PIN 13 //UNO
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7 |
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8 | // IP AND MAC ADRESS
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9 | #define PORT 7777 //-> Type this under "TCP-Port" in the App
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10 | byte mac[] = {0x90, 0xA2, 0xDA, 0x10, 0xC1, 0x9C}; //If you're using more than one Arduino, set different Mac adresses for each board!
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11 | IPAddress ip(192, 168,1, 168);
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12 |
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13 | String inputstream = "";
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14 | String answer = "";
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15 | String text = "";
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16 | String command = "";
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17 | String serialInput = "";
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18 |
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19 | int pin = 0;
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20 | unsigned long value = 0;
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21 | unsigned long ticks[MAX_PIN]; //TICKS FOR EACH OUTPUT. USED IF AN OFFTIMER FOR AN OUTPUT HAS BEEN SET. 1 TICK = 100ms
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22 | unsigned long ticks_at_command; //IF WE GET NO COMMAND FOR XX SECONDS, THEN STOP CLIENT.
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23 |
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24 |
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25 | char charBuf[250];
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26 |
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27 | EthernetServer server = (PORT);
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28 | boolean verbunden = false;
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29 | EthernetClient client;
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30 |
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31 | boolean pwm[MAX_PIN];
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32 |
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33 | //Variables for the PWM-Values. The PWM-Values are always between 0 and 255, no matter, what Min/Max-Values you have set in the App.
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34 | //NEVER CHANGE!!! The Position of the slider depends on that value.
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35 | //(You can't read pwm values directly from a pin.)
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36 | int pwm_value[MAX_PIN];
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37 |
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38 |
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39 |
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40 | //________________________________________________________________________________________________________________________________________________
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41 | void setup() {
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42 |
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43 | /*
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44 | Arduino communicates with the shield using the SPI bus.
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45 | This is on digital pins 11, 12, and 13 on the Uno and pins 50, 51, and 52 on the Mega.
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46 | On both boards, pin 10 is used as SS.
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47 | On the Mega, the hardware SS pin, 53, is not used to select the W5500, but it must be kept as an output or the SPI interface won't work.
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48 | */
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49 |
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50 |
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51 | //SET ALL DIGITAL PINS AS OUTPUT
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52 | //ATTENTION: DO NOT USE 11,12,13 ON THE UNO WITH ETHERNET SHIELD!
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53 |
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54 | for (int i = 0;i<MAX_PIN;i++){
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55 | if ((i < 10) || (i >13)) pinMode(i, OUTPUT);
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56 | ticks[i] = 0;
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57 | }
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58 |
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59 | // start the Ethernet connection:
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60 | Ethernet.begin(mac,ip);
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61 | server.begin();
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62 |
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63 | //START SERIAL 0 (Debug Port)
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64 | //Serial.begin(2400); //The Serial Port occupies Outputs 0 & 1
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65 |
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66 | }
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67 |
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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 | void loop() {
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73 |
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74 | client = server.available();
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75 |
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76 |
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77 | if(client.available())
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78 | {
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79 |
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80 | ticks_at_command = millis();
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81 |
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82 | char zeichen = client.read();
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83 |
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84 | inputstream += zeichen;
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85 |
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86 |
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87 | while (inputstream.indexOf(';')>0){
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88 |
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89 |
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90 | inputstream.trim();
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91 |
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92 | //ALL COMMANDS COMING FROM THE APP ARE CONSTRUCTED AS FOLLOWS:
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93 | // 4 CHARS COMMAND (SETD = Set digital Pin ,GETD = Get digital Pin, OFFT = Set Offtimer,SETP = Set PWM, GETP = Get PWM)
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94 | // x CHARS PIN (0,1,2,3...51,52,53)
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95 | // 1 POINT .
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96 | // x CHARS VALUE (0 = Off, 1 = On, 0-255 = PWM Value)
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97 | // 1 SEMICOLON ;
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98 |
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99 | //FOR EXAMPLE:
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100 |
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101 | //SETD1.1; Set digital Pin 1 on
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102 | //SETD3.0; Set digital Pin 3 off
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103 | //SETP15.255; Set PWM for Pin 15 to 255
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104 | //OFFT17.200; Set offtimer for pin 17 to 200ticks (20 seconds)
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105 | //GETA5; Get value of analogue Pin 5
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106 |
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107 | command = inputstream.substring(0,4);
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108 | value = 0;
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109 | pin = -1;
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110 |
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111 |
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112 | value = inputstream.substring(inputstream.lastIndexOf('.')+1).toInt();
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113 | pin = inputstream.substring(4,inputstream.lastIndexOf('.')).toInt();
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114 |
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115 |
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116 | //UNKNOWN COMMAND?
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117 | if ((command != "SETD" && command != "GETD" && command != "SETP" && command != "GETA" && command != "OFFT" && command != "GETP") || pin == -1 ){
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118 | inputstream = "";
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119 | command = "";
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120 | value = 0;
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121 | pin = 0;
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122 | }
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123 |
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124 |
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125 |
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126 | //GET STATE OF DIGITAL OUTPUT (GETDXX). ANSWER: "DXX.0;" OR "DXX.1;"
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127 | if (command == "GETD"){
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128 | answer += "D" + String(pin) + "." + digitalRead(pin) + ";";
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129 | }
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130 |
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131 | //GET STATE OF ANALOG INPUT (GETAXX). ANSWER: "AXX.YYY;" YYY = 0 to 1023
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132 | else if (command == "GETA"){
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133 | answer += "A" + String(pin) + "." + analogRead(pin) + ";";
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134 | }
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135 | //SET DIGITAL OUTPUT ON (SETDXX.1) OR OFF (SETDXX.0). ANSWER: "DXX.0;" OR "DXX.1;"
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136 | else if (command == "SETD"){
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137 | ticks[pin] = 0;
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138 | digitalWrite(pin,value);
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139 | answer += "D" + String(pin) + "." + digitalRead(pin)+";";
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140 |
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141 | }
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142 |
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143 | //SET OFFTIMER FOR A DIGITAL OUTPUT (OFFTXX.SS) <- XX = PIN, SS = 1/10Sec (1 SECOND = 10), ANSWER: "DXX.1;"
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144 | else if (command == "OFFT"){
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145 | digitalWrite(pin,1);
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146 | ticks[pin] = millis() + (value*100);
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147 | answer += "D" + String(pin) + ".1;";//digitalRead(pin);
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148 | }
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149 |
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150 | //SET PWM VALUE (SETPXX.YYY)
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151 | else if (command == "SETP"){
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152 | analogWrite(pin,value);
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153 | pwm_value[pin] = value;
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154 | answer += "P" + String(pin) + "." + String(pwm_value[pin], DEC) + ";";
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155 |
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156 |
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157 | }
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158 | //GET PWM VALUE (GETPXX). ANSWER: "PXX.YYY;"
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159 | else if (command == "GETP"){
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160 |
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161 | answer += "P" + String(pin) + "." + String(pwm_value[pin], DEC) + ";";
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162 |
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163 | }
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164 |
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165 |
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166 | inputstream = inputstream.substring(inputstream.indexOf(';')+1);
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167 |
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168 | }loop;//<-(While inputstream Contains ';')
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169 |
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170 |
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171 | //clear Input Buffer
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172 | client.flush();
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173 |
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174 |
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175 | }//<-End if(client.available())
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176 |
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177 |
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178 | //NO COMMANDS FOR 5 SECONDS->RESTART ETHERNET SERVER. (just "client.stop()" may cause problems)
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179 | if ((millis() > ticks_at_command + 5000) && ticks_at_command > 0) {
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180 | ticks_at_command = 0;
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181 | client.stop();
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182 | Ethernet.begin(mac,ip);
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183 | server.begin();
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184 | }
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185 |
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186 |
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187 | //CHECK FOR OFFTIMERS
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188 | for (int i = 0; i< MAX_PIN; i++){
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189 | if ((millis() >= ticks[i]) && (ticks[i] > 0)){
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190 | ticks[i] = 0;
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191 | digitalWrite(i,0);
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192 | text = String(i);
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193 | answer +="D" + text + ".0;";
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194 | }
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195 | }
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196 |
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197 |
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198 | //SEND ANSWER TO PHONE
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199 | if (answer != ""){
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200 |
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201 | answer.toCharArray(charBuf, answer.length()+1);
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202 | server.write(charBuf,answer.length()); //Writes to all Clients connected
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203 | answer = "";
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204 |
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205 | }
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206 |
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207 | }//<-MAIN LOOP
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208 |
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209 | //________________________________________________________________________
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