[136] | 1 | /*
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| 2 | Web client
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| 3 |
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| 4 | This sketch connects to a website through a GSM shield. Specifically,
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| 5 | this example downloads the URL "http://arduino.cc/asciilogo.txt" and
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| 6 | prints it to the Serial monitor.
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| 7 |
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| 8 | Circuit:
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| 9 | * GSM shield attached to an Arduino
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| 10 | * SIM card with a data plan
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| 11 |
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| 12 | created 8 Mar 2012
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| 13 | by Tom Igoe
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| 14 |
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| 15 | http://arduino.cc/en/Tutorial/GSMExamplesWebClient
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| 16 |
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| 17 | */
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| 18 |
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| 19 | // libraries
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| 20 | #include <GSM.h>
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| 21 |
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| 22 | // PIN Number
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| 23 | #define PINNUMBER ""
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| 24 |
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| 25 | // APN data
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| 26 | #define GPRS_APN "GPRS_APN" // replace your GPRS APN
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| 27 | #define GPRS_LOGIN "login" // replace with your GPRS login
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| 28 | #define GPRS_PASSWORD "password" // replace with your GPRS password
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| 29 |
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| 30 | // initialize the library instance
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| 31 | GSMClient client;
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| 32 | GPRS gprs;
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| 33 | GSM gsmAccess;
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| 34 |
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| 35 | // URL, path & port (for example: arduino.cc)
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| 36 | char server[] = "arduino.cc";
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| 37 | char path[] = "/asciilogo.txt";
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| 38 | int port = 80; // port 80 is the default for HTTP
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| 39 |
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| 40 | void setup()
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| 41 | {
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| 42 | // initialize serial communications and wait for port to open:
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| 43 | Serial.begin(9600);
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| 44 | while (!Serial) {
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| 45 | ; // wait for serial port to connect. Needed for Leonardo only
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| 46 | }
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| 47 |
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| 48 | Serial.println("Starting Arduino web client.");
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| 49 | // connection state
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| 50 | boolean notConnected = true;
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| 51 |
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| 52 | // After starting the modem with GSM.begin()
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| 53 | // attach the shield to the GPRS network with the APN, login and password
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| 54 | while (notConnected)
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| 55 | {
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| 56 | if ((gsmAccess.begin(PINNUMBER) == GSM_READY) &
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| 57 | (gprs.attachGPRS(GPRS_APN, GPRS_LOGIN, GPRS_PASSWORD) == GPRS_READY))
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| 58 | notConnected = false;
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| 59 | else
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| 60 | {
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| 61 | Serial.println("Not connected");
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| 62 | delay(1000);
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| 63 | }
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| 64 | }
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| 65 |
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| 66 | Serial.println("connecting...");
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| 67 |
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| 68 | // if you get a connection, report back via serial:
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| 69 | if (client.connect(server, port))
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| 70 | {
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| 71 | Serial.println("connected");
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| 72 | // Make a HTTP request:
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| 73 | client.print("GET ");
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| 74 | client.print(path);
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| 75 | client.println(" HTTP/1.1");
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| 76 | client.print("Host: ");
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| 77 | client.println(server);
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| 78 | client.println("Connection: close");
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| 79 | client.println();
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| 80 | }
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| 81 | else
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| 82 | {
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| 83 | // if you didn't get a connection to the server:
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| 84 | Serial.println("connection failed");
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| 85 | }
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| 86 | }
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| 87 |
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| 88 | void loop()
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| 89 | {
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| 90 | // if there are incoming bytes available
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| 91 | // from the server, read them and print them:
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| 92 | if (client.available())
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| 93 | {
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| 94 | char c = client.read();
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| 95 | Serial.print(c);
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| 96 | }
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| 97 |
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| 98 | // if the server's disconnected, stop the client:
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| 99 | if (!client.available() && !client.connected())
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| 100 | {
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| 101 | Serial.println();
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| 102 | Serial.println("disconnecting.");
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| 103 | client.stop();
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| 104 |
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| 105 | // do nothing forevermore:
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| 106 | for (;;)
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| 107 | ;
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| 108 | }
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| 109 | }
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