#include <unistd.h>#include <stdio.h>#include <fcntl.h>     /* for data reading from /dev/ts */typedef struct ts_event_1{    int x,y;    int dx,dy;    int event;    int state;    int ev_no;    unsigned long ev_time;}ts_pen_info;/* * tstest application code, the start code of Linux touch screen application * compile : *          $arm-elf-gcc -Wl,-elf2flt -o tstest tstest.c *          $cp tstest /tftpboot/examples * run in target: *          #cd /var *          #ftp 192.168.1.180 *          ftp>bin *          ftp>cd /tftpboot/examples *          ftp>get tstest *          ftp>by *          #./tstest */int main(int argc, char **argv){    static int ts = -1;    static int mousex = 0;    static int mousey = 0;    static ts_pen_info ts_event;        // touch screen    printf("touch screen test program\n");    printf("please touch the screen\n");    ts = open ("/dev/ts", O_RDONLY);    if (ts < 0)     {        fprintf (stderr, "Can not open touch screen!\n");        exit(1);    }    while(1)    {        read (ts, &ts_event, sizeof (ts_pen_info));        if (ts_event.event > 0)         {            printf ("mouse down: ts_event.x = %d, ts_event.y = %d\n", ts_event.x, ts_event.y);        }    }}