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