1 | /*
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2 |
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3 | This sketch test the GSM shield's ability to connect to a
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4 | GPERS network. It asks for APN information through the
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5 | serial monitor and tries to connect to arduino.cc.
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6 |
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7 | Circuit:
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8 | * GSM shield attached
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9 | * SIM card with data plan
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10 |
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11 | Created 18 Jun 2012
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12 | by David del Peral
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13 |
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14 | This example code is part of the public domain
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15 |
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16 | http://arduino.cc/en/Tutorial/GSMToolsTestGPRS
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17 |
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18 | */
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19 |
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20 | // libraries
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21 | #include <GSM.h>
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22 |
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23 | // PIN Number
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24 | #define PINNUMBER ""
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25 |
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26 | // initialize the library instance
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27 | GSM gsmAccess; // GSM access: include a 'true' parameter for debug enabled
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28 | GPRS gprsAccess; // GPRS access
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29 | GSMClient client; // Client service for TCP connection
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30 |
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31 | // messages for serial monitor response
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32 | String oktext = "OK";
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33 | String errortext = "ERROR";
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34 |
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35 | // URL and path (for example: arduino.cc)
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36 | char url[] = "arduino.cc";
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37 | char urlproxy[] = "http://arduino.cc";
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38 | char path[] = "/";
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39 |
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40 | // variable for save response obtained
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41 | String response = "";
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42 |
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43 | // use a proxy
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44 | boolean use_proxy = false;
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45 |
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46 | void setup()
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47 | {
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48 | // initialize serial communications and wait for port to open:
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49 | Serial.begin(9600);
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50 | while (!Serial) {
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51 | ; // wait for serial port to connect. Needed for Leonardo only
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52 | }
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53 | }
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54 |
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55 | void loop()
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56 | {
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57 | use_proxy = false;
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58 |
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59 | // start GSM shield
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60 | // if your SIM has PIN, pass it as a parameter of begin() in quotes
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61 | Serial.print("Connecting GSM network...");
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62 | if (gsmAccess.begin(PINNUMBER) != GSM_READY)
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63 | {
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64 | Serial.println(errortext);
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65 | while (true);
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66 | }
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67 | Serial.println(oktext);
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68 |
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69 | // read APN introduced by user
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70 | char apn[50];
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71 | Serial.print("Enter your APN: ");
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72 | readSerial(apn);
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73 | Serial.println(apn);
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74 |
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75 | // Read APN login introduced by user
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76 | char login[50];
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77 | Serial.print("Now, enter your login: ");
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78 | readSerial(login);
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79 | Serial.println(login);
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80 |
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81 | // read APN password introduced by user
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82 | char password[20];
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83 | Serial.print("Finally, enter your password: ");
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84 | readSerial(password);
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85 |
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86 | // attach GPRS
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87 | Serial.println("Attaching to GPRS with your APN...");
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88 | if (gprsAccess.attachGPRS(apn, login, password) != GPRS_READY)
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89 | {
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90 | Serial.println(errortext);
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91 | }
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92 | else {
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93 |
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94 | Serial.println(oktext);
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95 |
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96 | // read proxy introduced by user
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97 | char proxy[100];
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98 | Serial.print("If your carrier uses a proxy, enter it, if not press enter: ");
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99 | readSerial(proxy);
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100 | Serial.println(proxy);
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101 |
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102 | // if user introduced a proxy, asks him for proxy port
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103 | int pport;
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104 | if (proxy[0] != '\0') {
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105 | // read proxy port introduced by user
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106 | char proxyport[10];
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107 | Serial.print("Enter the proxy port: ");
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108 | readSerial(proxyport);
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109 | // cast proxy port introduced to integer
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110 | pport = (int) proxyport;
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111 | use_proxy = true;
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112 | Serial.println(proxyport);
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113 | }
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114 |
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115 | // connection with arduino.cc and realize HTTP request
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116 | Serial.print("Connecting and sending GET request to arduino.cc...");
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117 | int res_connect;
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118 |
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119 | // if use a proxy, connect with it
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120 | if (use_proxy)
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121 | res_connect = client.connect(proxy, pport);
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122 | else
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123 | res_connect = client.connect(url, 80);
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124 |
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125 | if (res_connect)
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126 | {
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127 | // make a HTTP 1.0 GET request (client sends the request)
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128 | client.print("GET ");
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129 |
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130 | // if use a proxy, the path is arduino.cc URL
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131 | if (use_proxy)
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132 | client.print(urlproxy);
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133 | else
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134 | client.print(path);
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135 |
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136 | client.println(" HTTP/1.0");
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137 | client.println();
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138 | Serial.println(oktext);
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139 | }
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140 | else
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141 | {
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142 | // if you didn't get a connection to the server
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143 | Serial.println(errortext);
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144 | }
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145 | Serial.print("Receiving response...");
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146 |
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147 | boolean test = true;
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148 | while (test)
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149 | {
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150 | // if there are incoming bytes available
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151 | // from the server, read and check them
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152 | if (client.available())
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153 | {
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154 | char c = client.read();
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155 | response += c;
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156 |
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157 | // cast response obtained from string to char array
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158 | char responsechar[response.length() + 1];
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159 | response.toCharArray(responsechar, response.length() + 1);
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160 |
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161 | // if response includes a "200 OK" substring
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162 | if (strstr(responsechar, "200 OK") != NULL) {
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163 | Serial.println(oktext);
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164 | Serial.println("TEST COMPLETE!");
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165 | test = false;
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166 | }
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167 | }
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168 |
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169 | // if the server's disconnected, stop the client:
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170 | if (!client.connected())
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171 | {
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172 | Serial.println();
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173 | Serial.println("disconnecting.");
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174 | client.stop();
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175 | test = false;
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176 | }
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177 | }
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178 | }
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179 | }
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180 |
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181 | /*
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182 | Read input serial
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183 | */
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184 | int readSerial(char result[])
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185 | {
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186 | int i = 0;
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187 | while (1)
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188 | {
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189 | while (Serial.available() > 0)
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190 | {
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191 | char inChar = Serial.read();
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192 | if (inChar == '\n')
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193 | {
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194 | result[i] = '\0';
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195 | return 0;
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196 | }
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197 | if (inChar != '\r')
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198 | {
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199 | result[i] = inChar;
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200 | i++;
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201 | }
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202 | }
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203 | }
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204 | }
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