Wap a programe to activate GLCD screen..

#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <linux/input.h>

int main()
  {
    int fd;
    char buff[256] = "Name";
    int i,rb;
        struct input_event ev;
        struct input_absinfo ab;   //absolute info//

     if ((fd = open("/dev/input/touchscreen0", O_RDONLY)) < 0)
     {
       printf ("Error Opening the Device\n");
       return 1;
     }
      ioctl(fd, EVIOCGNAME(sizeof(buff)), buff);
      printf("Touch Input device name: \"%s\"\n", buff);

        for (i = 0; i < 5; i++)
       {
        rb=read(fd,&ev,sizeof(struct input_event));
        printf ("After read\n");
        if ((ev.type == 1) && (ev.code == 330))
        {
         printf ("Touch Event = %d\n",ev.code);
        }

        if ((ev.type == 3) && (ev.code == 0))
        {
         printf ("X Value  = %d\n",ev.value);
        }
        if ((ev.type == 3) && (ev.code == 1))
        {
         printf ("Y Value  = %d\n",ev.value);
        }
        if ((ev.type == 3) && (ev.code == 24))
        {
         printf ("Touch Pressure  = %d\n",ev.value);
        }
    }
    return 0;
 }