1 /* $NetBSD: kbd.c,v 1.1 2010/01/11 02:16:51 pooka Exp $ */
2
3 /*
4 * Copyright (c) 2010 Antti Kantee. All Rights Reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 /*
29 * Experimental proof-of-concept program:
30 *
31 * Read keyboard events from a USB keyboard using rump drivers.
32 */
33
34 #include <sys/types.h>
35 #include <sys/time.h>
36
37 #include <dev/wscons/wsconsio.h>
38
39 #include <rump/rump.h>
40 #include <rump/rump_syscalls.h>
41
42 #include <err.h>
43 #include <paths.h>
44 #include <string.h>
45 #include <stdio.h>
46 #include <stdlib.h>
47
48 #define SHIFT (-0x20)
49
50 int
main(int argc,char * argv[])51 main(int argc, char *argv[])
52 {
53 struct wscons_event *wev;
54 int shift = 0;
55 char buf[128];
56 int fd;
57
58 rump_boot_sethowto(RUMP_AB_VERBOSE);
59 rump_init();
60
61 fd = rump_sys_open("/dev/wskbd", 0);
62 if (fd == -1)
63 err(1, "open");
64
65 while (rump_sys_read(fd, buf, sizeof(buf)) > 0) {
66 const char *typestr;
67
68 /* XXX: timespec in 5.0 vs. -current */
69 wev = (void *)buf;
70
71 switch (wev->type) {
72 case WSCONS_EVENT_KEY_UP:
73 typestr = "up";
74 if (wev->value == 0xe1 || wev->value == 0xe5)
75 shift = 0;
76 break;
77 case WSCONS_EVENT_KEY_DOWN:
78 typestr = "down";
79 if (wev->value == 0xe1 || wev->value == 0xe5)
80 shift = SHIFT;
81 break;
82 default:
83 typestr = "unknown";
84 break;
85 }
86 printf("event type: %d (%s)\n", wev->type, typestr);
87 printf("value 0x%x", wev->value);
88 /*
89 * There's probably a value-to-readable tool somewhere
90 * in the tree, but i'm not sure where or how to use it,
91 * so I'll just punt with the supersimple version for now.
92 */
93 if (wev->value >= 0x04 && wev->value <= 0x1d)
94 printf(" (%c)", wev->value - 0x04 + 'a' + shift);
95 printf("\n");
96 }
97 }
98