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110 lines
2.4 KiB
C++
110 lines
2.4 KiB
C++
/*
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Web client
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This sketch connects to a website through a GSM shield. Specifically,
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this example downloads the URL "http://arduino.cc/asciilogo.txt" and
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prints it to the Serial monitor.
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Circuit:
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* GSM shield attached to an Arduino
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* SIM card with a data plan
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created 8 Mar 2012
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by Tom Igoe
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http://arduino.cc/en/Tutorial/GSMExamplesWebClient
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*/
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// libraries
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#include <GSM.h>
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// PIN Number
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#define PINNUMBER ""
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// APN data
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#define GPRS_APN "GPRS_APN" // replace your GPRS APN
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#define GPRS_LOGIN "login" // replace with your GPRS login
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#define GPRS_PASSWORD "password" // replace with your GPRS password
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// initialize the library instance
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GSMClient client;
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GPRS gprs;
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GSM gsmAccess;
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// URL, path & port (for example: arduino.cc)
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char server[] = "arduino.cc";
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char path[] = "/asciilogo.txt";
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int port = 80; // port 80 is the default for HTTP
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void setup()
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{
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// initialize serial communications and wait for port to open:
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Serial.begin(9600);
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while (!Serial) {
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; // wait for serial port to connect. Needed for Leonardo only
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}
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Serial.println("Starting Arduino web client.");
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// connection state
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boolean notConnected = true;
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// After starting the modem with GSM.begin()
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// attach the shield to the GPRS network with the APN, login and password
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while (notConnected)
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{
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if ((gsmAccess.begin(PINNUMBER) == GSM_READY) &
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(gprs.attachGPRS(GPRS_APN, GPRS_LOGIN, GPRS_PASSWORD) == GPRS_READY))
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notConnected = false;
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else
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{
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Serial.println("Not connected");
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delay(1000);
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}
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}
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Serial.println("connecting...");
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// if you get a connection, report back via serial:
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if (client.connect(server, port))
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{
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Serial.println("connected");
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// Make a HTTP request:
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client.print("GET ");
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client.print(path);
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client.println(" HTTP/1.1");
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client.print("Host: ");
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client.println(server);
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client.println("Connection: close");
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client.println();
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}
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else
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{
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// if you didn't get a connection to the server:
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Serial.println("connection failed");
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}
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}
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void loop()
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{
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// if there are incoming bytes available
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// from the server, read them and print them:
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if (client.available())
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{
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char c = client.read();
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Serial.print(c);
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}
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// if the server's disconnected, stop the client:
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if (!client.available() && !client.connected())
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{
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Serial.println();
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Serial.println("disconnecting.");
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client.stop();
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// do nothing forevermore:
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for (;;)
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;
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}
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}
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