www.pudn.com > touch.rar > tstest.c

#include  
#include  
#include  
      
/* for data reading from /dev/ts */ 
typedef struct { 
    unsigned short pressure; 
    unsigned short x; 
    unsigned short y; 
    unsigned short pad; 
} TS_EVENT; 
 
/* 
 * tstest application code, the start code of Linux touch screen application 
 * compile : 
 *          $/usr/local/arm/2.95.3/bin/arm-linux-gcc -o tstest tstest.c 
 *          $cp tstest /tftpboot/examples 
 * run in target: 
 *          #mount 192.168.1.180:/tftpboot/ /mnt/nfs 
 *          #cd /mnt/nfs/examples 
 *          #./tstest 
 */ 
int main(int argc, char **argv) 
{ 
    static int ts = -1; 
    static int mousex = 0; 
    static int mousey = 0; 
    static TS_EVENT 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_EVENT)); 
        if (ts_event.pressure > 0)  
        { 
            printf ("mouse down: ts_event.x = %d, ts_event.y = %d\n", ts_event.x, ts_event.y); 
        } 
    } 
}