/*********
  Complete project details at http://randomnerdtutorials.com  
*********/

#include <SoftwareSerial.h>


// Configure software serial port
SoftwareSerial SIM900(7, 8);

//Variable to save incoming SMS characters
char incoming_char=0;

int i=0;
char ricevuto[160];
String casting;

void setup() {
  pinMode(3,OUTPUT);
  pinMode(4,OUTPUT);
  // Arduino communicates with SIM900 GSM shield at a baud rate of 19200
  // Make sure that corresponds to the baud rate of your module
  SIM900.begin(19200);
  // For serial monitor
  Serial.begin(19200); 
  // Give time to your GSM shield log on to network
  delay(3000);

  // AT command to set SIM900 to SMS mode
  SIM900.print("AT+CMGF=1\r"); 
  delay(100);
  // Set module to send SMS data to serial out upon receipt 
  SIM900.print("AT+CNMI=2,2,0,0,0\r");
  delay(100);

  digitalWrite(3,HIGH);
  digitalWrite(4,HIGH);
}

void loop() 
{
  
  // Display any text that the GSM shield sends out on the serial monitor
  if(SIM900.available() >0) 
  {
    int i = 0;
    casting = "";
    
    while(SIM900.available() >0) {
      incoming_char=SIM900.read();
      casting = casting + (String) incoming_char;
    }



    casting = casting.substring(51,casting.length()-1);
    Serial.print(casting);


  }

     String prova = "ANTANI";
    if(casting=="antani") 
    {
      Serial.print("ok"); 
      digitalWrite(3,LOW);
      
    }



}