mac80211: revert the probe request timeout change
[openwrt/svn-archive/archive.git] / package / gpioctl / src / main.c
1 /*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA02111-1307USA
15 *
16 * Feedback, Bugs... blogic@openwrt.org
17 *
18 */
19
20 #include <stdio.h>
21 #include <stdlib.h>
22 #include <sys/types.h>
23 #include <sys/stat.h>
24 #include <fcntl.h>
25 #include <linux/gpio_dev.h>
26 #include <linux/ioctl.h>
27
28 void
29 print_usage()
30 {
31 printf("gpioctl dirin|dirout|get|set|clear gpio\n");
32 exit(0);
33 }
34
35 int
36 main(int argc, char **argv)
37 {
38 int gpio_pin;
39 int fd;
40 int result = 0;
41
42 if (argc != 3)
43 {
44 print_usage();
45 }
46
47 if ((fd = open("/dev/gpio", O_RDWR)) < 0)
48 {
49 printf("Error whilst opening /dev/gpio\n");
50 return -1;
51 }
52
53 gpio_pin = atoi(argv[2]);
54
55 printf("using gpio pin %d\n", gpio_pin);
56
57 if (!strcmp(argv[1], "dirin"))
58 {
59 ioctl(fd, GPIO_DIR_IN, gpio_pin);
60 } else if (!strcmp(argv[1], "dirout"))
61 {
62 ioctl(fd, GPIO_DIR_OUT, gpio_pin);
63 } else if (!strcmp(argv[1], "get"))
64 {
65 result = ioctl(fd, GPIO_GET, gpio_pin);
66 printf("Pin %d is %s\n", gpio_pin, (result ? "HIGH" : "LOW"));
67 } else if (!strcmp(argv[1], "set"))
68 {
69 ioctl(fd, GPIO_SET, gpio_pin);
70 } else if (!strcmp(argv[1], "clear"))
71 {
72 ioctl(fd, GPIO_CLEAR, gpio_pin);
73 } else print_usage();
74
75 return result;
76 }