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Arduino/libraries/GSM/examples/Tools/TestGPRS/TestGPRS.ino

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/*
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This sketch test the GSM shield's ability to connect to a
GPERS network. It asks for APN information through the
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serial monitor and tries to connect to arduino.cc.
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Circuit:
* GSM shield attached
* SIM card with data plan
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Created 18 Jun 2012
by David del Peral
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This example code is part of the public domain
http://www.arduino.cc/en/Tutorial/GSMToolsTestGPRS
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*/
// libraries
#include <GSM.h>
// PIN Number
#define PINNUMBER ""
// initialize the library instance
GSM gsmAccess; // GSM access: include a 'true' parameter for debug enabled
GPRS gprsAccess; // GPRS access
GSMClient client; // Client service for TCP connection
// messages for serial monitor response
String oktext = "OK";
String errortext = "ERROR";
// URL and path (for example: arduino.cc)
char url[] = "arduino.cc";
char urlproxy[] = "http://www.arduino.cc";
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char path[] = "/";
// variable for save response obtained
String response = "";
// use a proxy
boolean use_proxy = false;
void setup()
{
// initialize serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
}
void loop()
{
use_proxy = false;
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// start GSM shield
// if your SIM has PIN, pass it as a parameter of begin() in quotes
Serial.print("Connecting GSM network...");
if (gsmAccess.begin(PINNUMBER) != GSM_READY)
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{
Serial.println(errortext);
while (true);
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}
Serial.println(oktext);
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// read APN introduced by user
char apn[50];
Serial.print("Enter your APN: ");
readSerial(apn);
Serial.println(apn);
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// Read APN login introduced by user
char login[50];
Serial.print("Now, enter your login: ");
readSerial(login);
Serial.println(login);
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// read APN password introduced by user
char password[20];
Serial.print("Finally, enter your password: ");
readSerial(password);
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// attach GPRS
Serial.println("Attaching to GPRS with your APN...");
if (gprsAccess.attachGPRS(apn, login, password) != GPRS_READY)
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{
Serial.println(errortext);
}
else {
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Serial.println(oktext);
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// read proxy introduced by user
char proxy[100];
Serial.print("If your carrier uses a proxy, enter it, if not press enter: ");
readSerial(proxy);
Serial.println(proxy);
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// if user introduced a proxy, asks him for proxy port
int pport;
if (proxy[0] != '\0') {
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// read proxy port introduced by user
char proxyport[10];
Serial.print("Enter the proxy port: ");
readSerial(proxyport);
// cast proxy port introduced to integer
pport = (int) proxyport;
use_proxy = true;
Serial.println(proxyport);
}
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// connection with arduino.cc and realize HTTP request
Serial.print("Connecting and sending GET request to arduino.cc...");
int res_connect;
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// if use a proxy, connect with it
if (use_proxy)
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res_connect = client.connect(proxy, pport);
else
res_connect = client.connect(url, 80);
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if (res_connect)
{
// make a HTTP 1.0 GET request (client sends the request)
client.print("GET ");
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// if use a proxy, the path is arduino.cc URL
if (use_proxy)
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client.print(urlproxy);
else
client.print(path);
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client.println(" HTTP/1.0");
client.println();
Serial.println(oktext);
}
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else
{
// if you didn't get a connection to the server
Serial.println(errortext);
}
Serial.print("Receiving response...");
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boolean test = true;
while (test)
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{
// if there are incoming bytes available
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// from the server, read and check them
if (client.available())
{
char c = client.read();
response += c;
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// cast response obtained from string to char array
char responsechar[response.length() + 1];
response.toCharArray(responsechar, response.length() + 1);
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// if response includes a "200 OK" substring
if (strstr(responsechar, "200 OK") != NULL) {
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Serial.println(oktext);
Serial.println("TEST COMPLETE!");
test = false;
}
}
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// if the server's disconnected, stop the client:
if (!client.connected())
{
Serial.println();
Serial.println("disconnecting.");
client.stop();
test = false;
}
}
}
}
/*
Read input serial
*/
int readSerial(char result[])
{
int i = 0;
while (1)
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{
while (Serial.available() > 0)
{
char inChar = Serial.read();
if (inChar == '\n')
{
result[i] = '\0';
return 0;
}
if (inChar != '\r')
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{
result[i] = inChar;
i++;
}
}
}
}