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Simplify arbitrary baudrate code

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This commit is contained in:
Martin Lund 2022-07-12 12:09:09 +02:00
parent ac859f41b9
commit a23be7f2c2
4 changed files with 32 additions and 36 deletions
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66
src/setspeed.c Normal file
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/*
* tio - a simple serial terminal I/O tool
*
* Copyright (c) 2017-2022 Martin Lund
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#ifdef HAVE_TERMIOS2
#define termios asmtermios
#include <sys/ioctl.h>
#undef termios
#include <asm-generic/ioctls.h>
#include <asm-generic/termbits.h>
#elif HAVE_IOSSIOSPEED
#include <sys/ioctl.h>
#include <IOKit/serial/ioss.h>
#endif
#ifdef HAVE_TERMIOS2
int setspeed(int fd, int baudrate)
{
struct termios2 tio;
int status;
status = ioctl(fd, TCGETS2, &tio);
// Set baudrate speed using termios2 interface
tio.c_cflag &= ~CBAUD;
tio.c_cflag |= BOTHER;
tio.c_ispeed = baudrate;
tio.c_ospeed = baudrate;
status = ioctl(fd, TCSETS2, &tio);
return status;
}
#elif HAVE_IOSSIOSPEED
int setspeed(int fd, int baudrate)
{
return ioctl(fd, IOSSIOSPEED, (char *)&baudrate);
}
#else
int setspeed(int fd, int baudrate)
{
errno = EINVAL;
return -1;
}
#endif