Interfacing LCD with 8051 microcontroller

Source code for LCD interfacing

/*------ PIN CONNECTION OF LCD WITH 8051 MCU -----------*/

LCD data lines (D0-D7) -----> ( P1.0 - P1.7 )
LCD control lines, RS(register select) ------> P2.0
                               RW(read write)     ------>  P2.1
                               EN( enable)          -------> P2.2
 /* ----------- Software for LCD interfacing-----------------------------*/

1. #include<AT89x51.h> /* header for 8051 family Micro controller*/
/* defining lcd control pin connection*/
2. #define register_select P2_0
3. #define read_write       P2_1
4. #define enable              P2_2
5. #define data_lines        P1

/*-------declaring function or function prototyping--------*/
void millidelay(unsigned int);
void send_command(unsigned char);
void send_data(unsigned char);
void lcd_init();
void send_string(unsigned int *);
/*------  end of function prototyping------------------------*/
 

void main(void) // main program or program execution starting point.
{
    lcd_init(); // first lcd will be initialized
    send_string("HELLO WORLD"); // print and display the string.
while(1) // continue display.repeating manner.
{
   }
}

void millidelay(unsigned int t) /* function that will create milly second delay*/
{
    int x,y;
for(x=0;x<t;x++)
for(y=0;y<1275;y++);
}  

 void send_command(unsigned char x)  /* function to send command to lcd*/
{
    data_lines=x;
    register_select=0;
    read_write=0;
    enable=1;
    millidelay(10);
    enable=0;
    millidelay(10);
 }

void send_data(unsigned char x)   /* function to send data to the lcd*/
{
deta_lines=x;
register_select=1;
read_write=0
enable=1;
millidelay(10);
enable=0;
millidelay(1);
}

void lcd_init()   /* function for lcd initialization*/
{
send_command(0x38);
send_command(0x01);
send_command(0x0E);
send_command(0x0F);
millidelay(1);   
 }

void send_string(unsigned char *x)
{
  int x;
for(x=0;data[x]!=0;x++)
{
   send_data(data[x]);
  }
}