GSM Test Web Server
This sketch creates a web server to accept incoming connections on the GSM shield. Some network providers only allow requests from inside their own network. You will need to check with your network provider to make sure your SIM card will accept incoming HTTP requests.
Hardware Required
- Arduino or Genuino Board
- Arduino + Telefonica GSM/GPRS Shield
- SIM card enable for Data
Circuit
image of the Arduino GSM Shield on top of an Arduino or Genuino board
Code
The complete sketch is below.
/*
Basic Web Server
A simple web server that replies with nothing, but prints the client's request
and the server IP address.
Circuit:
* GSM shield attached
created
by David Cuartielles
modified 21 Nov 2012
by Tom Igoe
http://www.arduino.cc/en/Tutorial/GSMToolsTestWebServer
This example code is part of the public domain
*/
#include <GSM.h>
// PIN Number
#define PINNUMBER ""
// APN data
#define GPRS_APN "GPRS_APN" // replace your GPRS APN
#define GPRS_LOGIN "login" // replace with your GPRS login
#define GPRS_PASSWORD "password" // replace with your GPRS password
// initialize the library instance
GPRS gprs;
GSM gsmAccess; // include a 'true' parameter for debug enabled
GSMServer server(80); // port 80 (http default)
// timeout
const unsigned long __TIMEOUT__ = 10 * 1000;
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
}
Serial.println("starting,..");
// connection state
boolean connected = true;
// Start GSM shield
// If your SIM has PIN, pass it as a parameter of begin() in quotes
while (!connected) {
if ((gsmAccess.begin(PINNUMBER) == GSM_READY) &
(gprs.attachGPRS(GPRS_APN, GPRS_LOGIN, GPRS_PASSWORD) == GPRS_READY)) {
connected = true;
} else {
Serial.println("Not connected");
delay(1000);
}
}
Serial.println("Connected to GPRS network");
// start server
server.begin();
//Get IP.
IPAddress LocalIP = gprs.getIPAddress();
Serial.println("Server IP address=");
Serial.println(LocalIP);
}
void loop() {
GSMClient client = server.available();
if (client) {
if (client.available()) {
Serial.write(client.read());
}
}
}
Basic Web Server
A simple web server that replies with nothing, but prints the client's request
and the server IP address.
Circuit:
* GSM shield attached
created
by David Cuartielles
modified 21 Nov 2012
by Tom Igoe
http://www.arduino.cc/en/Tutorial/GSMToolsTestWebServer
This example code is part of the public domain
*/
#include <GSM.h>
// PIN Number
#define PINNUMBER ""
// APN data
#define GPRS_APN "GPRS_APN" // replace your GPRS APN
#define GPRS_LOGIN "login" // replace with your GPRS login
#define GPRS_PASSWORD "password" // replace with your GPRS password
// initialize the library instance
GPRS gprs;
GSM gsmAccess; // include a 'true' parameter for debug enabled
GSMServer server(80); // port 80 (http default)
// timeout
const unsigned long __TIMEOUT__ = 10 * 1000;
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
}
Serial.println("starting,..");
// connection state
boolean connected = true;
// Start GSM shield
// If your SIM has PIN, pass it as a parameter of begin() in quotes
while (!connected) {
if ((gsmAccess.begin(PINNUMBER) == GSM_READY) &
(gprs.attachGPRS(GPRS_APN, GPRS_LOGIN, GPRS_PASSWORD) == GPRS_READY)) {
connected = true;
} else {
Serial.println("Not connected");
delay(1000);
}
}
Serial.println("Connected to GPRS network");
// start server
server.begin();
//Get IP.
IPAddress LocalIP = gprs.getIPAddress();
Serial.println("Server IP address=");
Serial.println(LocalIP);
}
void loop() {
GSMClient client = server.available();
if (client) {
if (client.available()) {
Serial.write(client.read());
}
}
}
See Also
- Arduino GSM Shield – Complete product description.
- Getting started with the GSM Shield – Get everything set up in minutes.
- GSM library – Your reference for the GSM Library.
- GSMServer
- ready()
- beginWrite()
- write()
- endWrite()
- read()
- available()
- stop()
- GSMToolsTestGPRS - Tries to access the internet over GPRS with supplied APN and credentials.
- GSMToolsBandManagement - Checks the band currently configured in the modem and allows you to change it.
- GSMToolsGsmScanNetworks - Scans the available networks and prints informations about IMEI and number of the SIM card.
- GSMToolsPinManagement - How to to change or remove the PIN number.
- GSMToolsTestModem - Tests to see if the modem of the GSM shield is working correctly.
- GSMExamplesMakeVoiceCall - How to make a voice call with mic and speaker.
Last revision 2018/08/23 by SM
