Home | History | Annotate | Line # | Download | only in ukbd_read 
      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
     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