How can I read date and time data from RTC of sim900 module using arduino? -
    #include "sim900.h" #include <softwareserial.h> #include "sms.h"  smsgsm sms;  boolean started=false; int count = 0;   void setup() {  pinmode(5, input);          // input pin switch    serial.begin(9600);   if (gsm.begin(2400))  {    serial.println("\nstatus=ready");    started=true;    }  else serial.println("\nstatus=idle");  delay(1000);   }   void loop()                                     {   if (digitalread(5)==1)    {     delay(500);     if (digitalread(5)==1)     {       count = count+1;       /*if(started)       {         if (sms.sendsms("+12345678", "alarm"))         serial.println("\nsms sent ok");       }*/                 serial.println("count = ");       serial.println(count);        readtime();       serial.println(content);     }    }   else    {     serial.println("normal");   } }   i use sim 900 arduino detect change of input pin 5 , alarm user. have few question need ...