Need help using GSM shield with arduino

Projects Programming
1

To start off I should say I'm a newbie at programming :roll_eyes: I found some helpful codes on Arduino's website like the one I listed bellow, but it's not exactly what I want. All I need is to know how to read certain SMS messages and triggers an actuator. For example, I want Arduino to send 5V to output pin 5 when an SMS message saying Hello is received. Your help will be appreciated, I'm new to this and it's frustrating me!!

 /*
SMS receiver

 This sketch, for the Arduino GSM shield, waits for SMS messages 
 and displays them through the Serial port. 

 Circuit:
 * GSM shield 

 created 25 Feb 2012
 by Javier Zorzano / TD

 This example is in the public domain.
*/

// libraries
#include <GSM.h>

// PIN Number
#define PINNUMBER ""

// initialize the library instance
GSM gsmAccess; // include a 'true' parameter for debug enabled
GSM_SMS sms;

char remoteNumber[20];  // Holds the emitting number

void setup() 
{
  // initialize serial communications
  Serial.begin(9600); 

  Serial.println("SMS Messages Receiver");

  // connection state
  boolean notConnected = true;

  // Start GSM shield
  // If your SIM has PIN, pass it as a parameter of begin() in quotes
  while(notConnected)
  {
    if(gsmAccess.begin(PINNUMBER)==GSM_READY)
      notConnected = false;
    else
    {
      Serial.println("Not connected");
      delay(1000);
    }
  }

  Serial.println("GSM initialized");
  Serial.println("Waiting for messages");
}

void loop() 
{
  char c;

  // If there are any SMSs available()  
  if (sms.available())
  {
    Serial.println("Message received from:");

    // Get remote number
    sms.remoteNumber(remoteNumber, 20);
    Serial.println(remoteNumber);

    // This is just an example of message disposal    
    // Messages starting with # should be discarded
    if(sms.peek()=='#')
    {
      Serial.println("Discarded SMS");
      sms.flush();
    }

    // Read message bytes and print them
    while(c=sms.read())
      Serial.print(c);

    Serial.println("\nEND OF MESSAGE");

    // delete message from modem memory
    sms.flush();
    Serial.println("MESSAGE DELETED");
  }

  delay(1000);

}

example_code.ino (1.66 KB)

2

Have you done a basic search? There are several examples of how to achieve this on the internet.