keyboard.c revision 50141 
1/*-
2 * Copyright (c) 1997 S�ren Schmidt
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer
10 *    in this position and unchanged.
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 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software withough specific prior written permission
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 *  $Id: keyboard.c,v 1.1 1997/10/01 20:53:38 sos Exp $
29 */
30
31#include <stdio.h>
32#include <sys/types.h>
33#include <sys/ioctl.h>
34#include <termios.h>
35#include <sys/time.h>
36#include <machine/console.h>
37#include "vgl.h"
38
39static struct termios VGLKeyboardTty;
40static int VGLKeyboardMode = -1;
41
42int
43VGLKeyboardInit(int mode)
44{
45  static struct termios term;
46
47  ioctl(0, KDGKBMODE, &VGLKeyboardMode);
48  tcgetattr(0, &VGLKeyboardTty);
49
50  term = VGLKeyboardTty;
51  cfmakeraw(&term);
52  term.c_iflag = IGNPAR | IGNBRK;
53  term.c_oflag = 0;
54  term.c_cflag = CREAD | CS8;
55  term.c_lflag &= ~(ICANON | ECHO | ISIG);
56  term.c_cc[VTIME] = 0;
57  term.c_cc[VMIN] = 0;
58  cfsetispeed(&term, 9600);
59  cfsetospeed(&term, 9600);
60  tcsetattr(0, TCSANOW, &term);
61
62  switch (mode) {
63  case VGL_RAWKEYS:
64    ioctl(0, KDSKBMODE, K_RAW);
65    break;
66  case VGL_CODEKEYS:
67    ioctl(0, KDSKBMODE, K_CODE);
68    break;
69  case VGL_XLATEKEYS:
70    ioctl(0, KDSKBMODE, K_XLATE);
71    break;
72  }
73  return 0;
74}
75
76void
77VGLKeyboardEnd()
78{
79  if (VGLKeyboardMode != -1) {
80    ioctl(0, KDSKBMODE, VGLKeyboardMode);
81    tcsetattr(0, TCSANOW, &VGLKeyboardTty);
82  }
83}
84
85int
86VGLKeyboardGetCh()
87{
88  unsigned char ch = 0;
89
90  read (0, &ch, 1);
91  return (int)ch;
92}
93