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/*
*
* AT multiplexer library with GLib integration
*
* Copyright (C) 2009 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <termios.h>
#include <glib.h>
#include "gsm0710_p.h"
#include "gatmux.h"
struct _GAtMux {
gint ref_count; /* Ref count */
GIOChannel *channel; /* channel */
};
GAtMux *g_at_mux_new(GIOChannel *channel)
{
GAtMux *mux;
if (!channel)
return NULL;
mux = g_try_new0(GAtMux, 1);
if (!mux)
return mux;
mux->ref_count = 1;
mux->channel = channel;
return mux;
}
static int open_device(const char *device)
{
struct termios ti;
int fd;
fd = open(device, O_RDWR | O_NOCTTY);
if (fd < 0)
return -1;
tcflush(fd, TCIOFLUSH);
/* Switch TTY to raw mode */
memset(&ti, 0, sizeof(ti));
cfmakeraw(&ti);
tcsetattr(fd, TCSANOW, &ti);
return fd;
}
GAtMux *g_at_mux_new_from_tty(const char *device)
{
GIOChannel *channel;
int fd;
fd = open_device(device);
if (fd < 0)
return NULL;
channel = g_io_channel_unix_new(fd);
if (!channel) {
close(fd);
return NULL;
}
return g_at_mux_new(channel);
}
GAtMux *g_at_mux_ref(GAtMux *mux)
{
if (mux == NULL)
return NULL;
g_atomic_int_inc(&mux->ref_count);
return mux;
}
void g_at_mux_unref(GAtMux *mux)
{
if (mux == NULL)
return;
if (g_atomic_int_dec_and_test(&mux->ref_count)) {
g_at_mux_shutdown(mux);
g_free(mux);
}
}
gboolean g_at_mux_shutdown(GAtMux *mux)
{
if (mux->channel == NULL)
return FALSE;
return TRUE;
}
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