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/* $Id$
*
* This file is part of pgets.
*
* pgets 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.
*
* pgets 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 pgets; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include <termios.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include "modem.h"
static struct termios _saved_termios;
/* Opens the modem and sets the baud rate */
int modem_open(const char *dev) {
struct termios pts;
int fd, n;
if ((fd = open(dev, O_RDWR|O_NDELAY)) < 0) {
perror("Serial port open failure");
return -1;
}
n = fcntl(fd, F_GETFL, 0);
fcntl(fd, F_SETFL, n & ~O_NDELAY);
if (tcgetattr(fd, &_saved_termios) != 0) {
perror("Serial port TERMIOS get failure");
close(fd);
return -1;
}
memset(&pts, 0, sizeof pts);
pts.c_cflag = CS8 | CLOCAL | CREAD;
pts.c_iflag = IGNPAR | IGNBRK | IGNCR | IXON | IXOFF;
pts.c_oflag = 0;
pts.c_lflag = 0;
pts.c_cc[VMIN] = 1;
pts.c_cc[VTIME] = 0;
cfsetospeed(&pts, B9600);
cfsetispeed(&pts, B9600);
tcflush(fd, TCIFLUSH);
if (tcsetattr(fd, TCSANOW, &pts) != 0) {
perror("Serial port TERMIOS set failure");
close(fd);
return -1;
}
return fd;
}
/* Closes the modem device and resets the baudrate */
void modem_close(int fd) {
tcflush(fd, TCIFLUSH);
tcsetattr(fd, TCSANOW, &_saved_termios);
close(fd);
}
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