tstest.c

来自「触摸屏移植」· C语言 代码 · 共 41 行

#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>
     
/* for data reading from /dev/ts */
typedef struct {
    unsigned short pressure;
    unsigned short x;
    unsigned short y;
    unsigned short pad;
} TS_EVENT;


int main(int argc, char **argv)
{
    static int ts = -1;

    static TS_EVENT ts_event;

    
    // touch screen
    printf("touch screen test program\n");
    printf("please touch the screen sizeof():%4d,sizeof DATA:%4d.\n",sizeof(TS_EVENT),sizeof(DATA));
    ts = open ("/dev/input/ts0", O_RDONLY);
    if (ts < 0) 
    {
        fprintf (stderr, "Can not open touch screen!\n");
        exit(1);
    }
    
    while(1)
    {
        read (ts, &ts_event, sizeof (TS_EVENT));
        if (ts_event.pressure > 0) 
        {
            printf ("mouse down: ts_event.x = %4d, ts_event.y = %4d pressure:%6d, pad:%4d\n", ts_event.x, ts_event.y,ts_event.pressure,ts_event.pad);
        }

    }
}