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Support non-standard flow control modes on Linux.
[libserialport.git] / linux_termios.c
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1/*
2 * This file is part of the libserialport project.
3 *
4 * Copyright (C) 2013 Martin Ling <martin-libserialport@earth.li>
5 *
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU Lesser General Public License as
8 * published by the Free Software Foundation, either version 3 of the
9 * License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 */
19
20#include <linux/termios.h>
21#include "linux_termios.h"
22
23int get_termios_get_ioctl(void)
24{
25#ifdef HAVE_TERMIOS2
26 return TCGETS2;
27#else
28 return TCGETS;
29#endif
30}
31
32int get_termios_set_ioctl(void)
33{
34#ifdef HAVE_TERMIOS2
35 return TCSETS2;
36#else
37 return TCSETS;
38#endif
39}
40
41int get_termios_size(void)
42{
43#ifdef HAVE_TERMIOS2
44 return sizeof(struct termios2);
45#else
46 return sizeof(struct termios);
47#endif
48}
49
50int get_termios_speed(void *data)
51{
52#ifdef HAVE_TERMIOS2
53 struct termios2 *term = (struct termios2 *) data;
54#else
55 struct termios *term = (struct termios *) data;
56#endif
57 if (term->c_ispeed != term->c_ospeed)
58 return -1;
59 else
60 return term->c_ispeed;
61}
62
63void set_termios_speed(void *data, int speed)
64{
65#ifdef HAVE_TERMIOS2
66 struct termios2 *term = (struct termios2 *) data;
67#else
68 struct termios *term = (struct termios *) data;
69#endif
70 term->c_cflag &= ~CBAUD;
71 term->c_cflag |= BOTHER;
72 term->c_ispeed = term->c_ospeed = speed;
73}
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74
75#ifdef HAVE_TERMIOX
76int get_termiox_size(void)
77{
78 return sizeof(struct termiox);
79}
80
81int get_termiox_flow(void *data)
82{
83 struct termiox *termx = (struct termiox *) data;
84
85 int flags = 0;
86 if (termx->x_cflag & RTSXOFF)
87 flags |= RTS_FLOW;
88 if (termx->x_cflag & CTSXON)
89 flags |= CTS_FLOW;
90 if (termx->x_cflag & DTRXOFF)
91 flags |= DTR_FLOW;
92 if (termx->x_cflag & DSRXON)
93 flags |= DSR_FLOW;
94
95 return flags;
96}
97
98void set_termiox_flow(void *data, int flags)
99{
100 struct termiox *termx = (struct termiox *) data;
101
102 termx->x_cflag &= ~(RTSXOFF | CTSXON | DTRXOFF | DSRXON);
103
104 if (flags & RTS_FLOW)
105 termx->x_cflag |= RTSXOFF;
106 if (flags & CTS_FLOW)
107 termx->x_cflag |= CTSXON;
108 if (flags & DTR_FLOW)
109 termx->x_cflag |= DTRXOFF;
110 if (flags & DSR_FLOW)
111 termx->x_cflag |= DSRXON;
112}
113#endif