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/*
* tslib/src/ts_finddev.c
*
* Copyright (C) Douglas Lowder
*
* This file is placed under the GPL. Please see the file
* COPYING for more details.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <sys/time.h>
#include <unistd.h>
#include "tslib.h"
static void usage(char **argv)
{
ts_print_ascii_logo(16);
printf("%s", tslib_version());
printf("\n");
printf("Usage: %s device_name wait_for_sec\n", argv[0]);
printf("\tdevice_name - tdevice to probe, example /dev/input/event0\n");
printf("\twait_for_sec - wait seconds for touch event, if 0 - don't wait!\n");
printf("\tReturn codes:\n");
printf("\t 0 - timeout expired without receiving event.\n");
printf("\t But this maybe is TouchScreen.\n");
printf("\t -1 - this is NOT TouchScreen device!\n");
printf("\t 1 - this is TouchScreen for shure!\n");
exit(-1);
}
static void alarm_handler(int sig)
{
/* time is expired */
printf("signal %d caught\n", sig);
exit(0);
}
int main(int argc, char **argv)
{
struct tsdev *ts;
struct ts_sample samp;
char *tsdevice = NULL;
int waitsec;
int ret;
if (argc != 3)
usage(argv);
tsdevice = argv[1];
waitsec = atoi(argv[2]);
if (waitsec < 0)
usage(argv);
ts = ts_setup(tsdevice, 0);
if (!ts)
return -1;
if (!waitsec)
return 0;
printf("Probe device %s, Please Touch Screen Anywhere in %i seconds! ...\n",
tsdevice, waitsec);
signal(SIGALRM, alarm_handler);
alarm(waitsec);
ret = ts_read_raw(ts, &samp, 1);
ts_close(ts);
if (ret)
return 1;
return -1;
}
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