void setup() {
  // put your setup code here, to run once:
 volatile unsigned char *outFdrr = 0x30, *outKdrr = 0x107;
  *outFdrr = 0xFF;
  *outKdrr= 0xFF;

init_lcd();
char a[] = "WELCOME";
//wrtRight(a);
wrtMiddle(a);
}

void del(){
  volatile int i=0;
  for(i=0;i<1000;i++);
}

void lcd_cntrl_write(){
  volatile unsigned char *rw = 0x108;
  *rw=0x00;
  del();
  *rw=0x01;
  del();
  *rw=0x00;
  del();
}

void outcntrl(char out){
    volatile unsigned char *rw = 0x108;
  *rw=out;
}

void op_data(unsigned char val){
  volatile unsigned char *outFd = 0x31;
  *outFd = val;
}

void init_lcd() {
  volatile unsigned char *outFd = 0x31;

  op_data(0x38);//set function
  lcd_cntrl_write();
  op_data(0x0f);//display contro;
  lcd_cntrl_write();
  op_data(0x01);//clear
  lcd_cntrl_write();
}

void out_write(char a){
  op_data(a);
  outcntrl(0x02);
  del();
  outcntrl(0x03);
  del();
  outcntrl(0x02);
  del();
}

void setCursorMiddle(int len){
unsigned char addr= 0x80+(unsigned char)((16-len)/2);
op_data(addr);
lcd_cntrl_write();
}

void wrtMiddle(char a[]){
op_data(0x06);//entry mode
  lcd_cntrl_write();
setCursorMiddle(strlen(a));
volatile int i;
for(i=0;a[i];i++){
out_write(a[i]);
}
}

void wrtRight(char a[]){

  op_data(0x05);//entry mode
  lcd_cntrl_write();
op_data(0x8F);//ddr addr mode
lcd_cntrl_write();
unsigned char line1_end = (unsigned char)(0x8F);
volatile int i;
for(i=0;a[i];i++){

out_write(a[i]);


line1_end++;
op_data(line1_end);
lcd_cntrl_write();
}
}

void loop() {
  // put your main code here, to run repeatedly
}