for(int i=0; i<40; i++)
{              
   LCDCmd(0x80);
  LCDWriteString("HELLO:");
  LCDCmd(0xC0);
  LCDWriteString("This is Feroz,Testing LCD scrolling CODE");   // Maximum 40 chars
  LCDCmd(0x1C);
  _delay_ms(200);
}//END For
 

#include <REGX52.H>

#define LCD P1
#define LCD_EN          0x80
#define LCD_RS          0x20
                     
//LCD Commands        

#define LCD_SETMODE                0x04
#define LCD_SETVISIBLE     0x08
#define LCD_SETFUNCTION    0x28
#define LCD_SETDDADDR      0x80

void delayms(unsigned char);
void delayus(unsigned char);
void lcd_init();
void lcd_reset();
void lcd_cmd (char);
void lcd_data(unsigned char);
void lcd_str (unsigned char *);
void clear(void);
void tx0(unsigned char);
void delay_sms (unsigned int);
void SMSString(char*text) ;
void init();
void read_text(unsigned char *);
unsigned int var,i,n;
unsigned char j,abc;
unsigned char idata msg1[150];
unsigned char rec_no[20];
unsigned char time_date[20];
void gsm_loop(unsigned int);

void serial () interrupt 4
{
msg1[abc]=SBUF;
abc++;
RI=0;
}

void main (void)
{

n=0x35;

gsm_loop(n);
delay_sms(2000);
}

void gsm_loop(unsigned int n)
{
  for(i=0x31;i<=n;i++)
  {
  clear();
  init();
  lcd_init();
  var=i;
  SMSString("AT\r"); // AT commands to initialize gsm modem
  delay_sms(1000);

  SMSString( "ATe0\r"); // turn off echo
  delay_sms(1000);

  SMSString( "AT&W\r"); // save settings
  delay_sms(1000);

  SMSString( "AT+CMGF=1\r"); // select text mode for sms
  delay_sms(1000);

  SMSString( "AT+CNMI=2,1,0,0,0\r"); // notification of new sms
  delay_sms(1000);

  SMSString( "AT+CMGR=");   // AT command to read sms
  tx0(var);
  SMSString("\r");

  IE=0X90;   // Enable serial interrupt
  delay_sms(2000);

  read_text(msg1);              // read sms and store in buffer msg1

  delay_sms(2000);                       
  IE=0X00;       // Disable all interrupt
           
  }
}


void init(void)
{
j=0;
abc=0;
TL1=0XFD; //9600 @ 11.0592
TH1=0xFD;
TMOD=0x20;
SCON=0x50;
TR1=1;
}

void SMSString(unsigned char* text) //function to send SMS using GSM modem
{
while (*text)
{
tx0(*text++);
}
}


void tx0(unsigned char x) //send data to serial port 0
{
EA=0;
SBUF=x;
while(TI==0);
TI=0;
EA=1;
}


void delay_sms (unsigned int count)
{
unsigned int i;                         // Keil v7.5a
    while(count) {
        i = 115;
                while(i>0) i--;
        count--;
}
}

void read_text( unsigned char *msg)
{
unsigned char *temp;
temp=msg;
do
msg++;
while(*msg!='#');
msg++;
do
*temp++=*msg++;
while(*msg!='#');       // reaching at end of message
*temp='\0';


lcd_cmd(0x80);
lcd_str(msg1);



         // array having message

}

void lcd_reset()
{
        LCD = 0xFF;
        delay_sms(40);
        LCD = 0x03+LCD_EN;
        LCD = 0x03;
        delay_sms(40);
        LCD = 0x03+LCD_EN;
        LCD = 0x03;
        delay_sms(5);
        LCD = 0x03+LCD_EN;
        LCD = 0x03;
        delay_sms(5);
        LCD = 0x02+LCD_EN;
        LCD = 0x02;
        delay_sms(5);
}


void lcd_init ()
{
        lcd_reset();
        lcd_cmd(LCD_SETFUNCTION);                    // 4-bit mode - 1 line - 5x7 font.
        lcd_cmd(LCD_SETVISIBLE+0x04);                // Display no cursor - no blink.
        lcd_cmd(LCD_SETMODE+0x02);                   // Automatic Increment - No Display shift.
        lcd_cmd(LCD_SETDDADDR);                      // Address DDRAM with 0 offset 80h.
 }

 void lcd_cmd (char cmd)
{
        LCD = ((cmd >> 4) & 0x0F)|LCD_EN;
        LCD = ((cmd >> 4) & 0x0F);

        LCD = (cmd & 0x0F)|LCD_EN;
        LCD = (cmd & 0x0F);

    delay_sms(1);
}

void lcd_data (unsigned char dat)
{
        LCD = (((dat >> 4) & 0x0F)|LCD_EN|LCD_RS);
        LCD = (((dat >> 4) & 0x0F)|LCD_RS);
       
        LCD = ((dat & 0x0F)|LCD_EN|LCD_RS);
        LCD = ((dat & 0x0F)|LCD_RS);

    delay_sms(1);
}

void clear(void)
{
unsigned char a;
for(a=0;a<100;a++)
msg1[a]=0x00;
}

void lcd_str (unsigned char *str)
{
        while(*str){
                lcd_data(*str++);
        }
}