GSM Code Text Message Read...

gsm

#include <string.h>         //Used for string manipulations

#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 10, 5, 4, 3, 2); //LCD Initialization
int i,j = 0;
int startRead = 1;
char smsVal = 0;
char sms[64]={
  '\0'};

long time = 0;
void setup(){
  pinMode(13, OUTPUT);
  pinMode(8,OUTPUT);
  digitalWrite(13, HIGH); // turn backlight on. Replace 'HIGH' with 'LOW' to turn it off.

  delay(2000);
  Serial.begin(9600);
  Serial3.begin(9600);
  delay(1000);
  Serial3.print("AT+CMGF=1\r\n");
  delay(500);
  Serial3.print("AT+CMGD=1\r\n");
  lcd.begin(16,2);              // columns, rows.  use 16,2 for a 16x2 LCD, etc.
  lcd.clear();
  lcd.setCursor(0,0);


}

void loop()
{

  //Serial.print("Loop Start");
  readSms();
//  lcdPrint();
//  lcd.clear();
//  lcd.setCursor(0,0);
//  //delay(5000);
//  lcd.print("Gonna Start ..");
  delay(1000);
  //lcd.clear();
  //lcd.setCursor(0,0);
  if(strlen(sms) > 0 )
  {
    timer(); 
  }
  else {
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("Turned Off!!"); 
    lcd.setCursor(0,1);
    lcd.print("Checking.."); 
    delay(5000);

  }
   
  memset( sms, '\0', 64 );

}

void readSms() {
  startRead =0;
  Serial.flush();
  Serial3.print("AT+CMGR=1\r\n");
  delay(500);
  //Serial.print("In Read SMS\r\n");
  for(i=0; i< 256 ; i++)
  {
    if(Serial3.available() > 0)
    {
      smsVal = Serial3.read();
      //lcd.print(smsVal);
      // Serial.print(smsVal);
      if(smsVal==34){
        j=0;  
        memset( sms, '\0', 64 );
        startRead = 1;
        lcd.clear();
      }
      if(startRead == 1 && smsVal != 10 && smsVal != 13 ){
        if(smsVal != 34 && smsVal != 79 && smsVal != 75)
        {
          sms[j]=smsVal;
          lcd.setCursor(j,1);
          lcd.print(sms[j]);
          j++;
          //delay(200);
        }

      }
    }

  }
  Serial3.print("AT+CMGD=1\r\n");
  delay(200);
  Serial.flush();

}

void lcdPrint(){
  int x = 0 ;
  lcd.clear();

  for(x = 0 ; x < strlen(sms) ; x++)
  {
    Serial.print("In lcdPrint\r\n");
    lcd.setCursor(x,0);
    lcd.print(sms[x],0);
  }
  lcd.print(" Seconds");
  // delay(2000);
}
void timer() {
  int delinSec =0;
  time = atoi(sms);
  for( delinSec = time ; delinSec > 0 ; delinSec--)
  {
    if(delinSec == time)
    {
      digitalWrite(8,HIGH);
    }
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print(delinSec);
    lcd.print(" Secs");
    delay(1000);
    if(delinSec ==1)
      digitalWrite(8,LOW);
  }  
}