M7350/external/bluetooth/bluez/tools/btattach.c
2024-09-09 08:57:42 +00:00

211 lines
4.2 KiB
C

/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2011-2012 Intel Corporation
* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
*
*
* 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include <termios.h>
#include <sys/ioctl.h>
#include <sys/poll.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/hci.h>
#include <bluetooth/hci_lib.h>
#include "hciattach.h"
static int open_serial(const char *path)
{
struct termios ti;
int fd, ldisc = N_HCI;
fd = open(path, O_RDWR | O_NOCTTY);
if (fd < 0) {
perror("Failed to open serial port");
return -1;
}
if (tcflush(fd, TCIOFLUSH) < 0) {
perror("Failed to flush serial port");
close(fd);
return -1;
}
/* Switch TTY to raw mode */
memset(&ti, 0, sizeof(ti));
cfmakeraw(&ti);
ti.c_cflag |= (B115200 | CLOCAL | CREAD);
if (tcsetattr(fd, TCSANOW, &ti) < 0) {
perror("Failed to set serial port settings");
close(fd);
return -1;
}
if (ioctl(fd, TIOCSETD, &ldisc) < 0) {
perror("Failed set serial line discipline");
close(fd);
return -1;
}
return fd;
}
static int attach_proto(const char *path, unsigned int proto,
unsigned int flags)
{
int fd;
fd = open_serial(path);
if (fd < 0)
return -1;
if (ioctl(fd, HCIUARTSETFLAGS, flags) < 0) {
perror("Failed to set flags");
close(fd);
return -1;
}
if (ioctl(fd, HCIUARTSETPROTO, proto) < 0) {
perror("Failed to set protocol");
close(fd);
return -1;
}
return fd;
}
static void usage(void)
{
printf("btattach - Bluetooth serial utility\n"
"Usage:\n");
printf("\tbtattach [options]\n");
printf("options:\n"
"\t-B, --bredr <device> Attach BR/EDR controller\n"
"\t-A, --amp <device> Attach AMP controller\n"
"\t-h, --help Show help options\n");
}
static const struct option main_options[] = {
{ "bredr", required_argument, NULL, 'B' },
{ "amp", required_argument, NULL, 'A' },
{ "version", no_argument, NULL, 'v' },
{ "help", no_argument, NULL, 'h' },
{ }
};
int main(int argc, char *argv[])
{
const char *bredr_path = NULL, *amp_path = NULL;
struct pollfd p[5];
int i, count = 0;
for (;;) {
int opt;
opt = getopt_long(argc, argv, "B:A:vh",
main_options, NULL);
if (opt < 0)
break;
switch (opt) {
case 'B':
bredr_path = optarg;
break;
case 'A':
amp_path = optarg;
break;
case 'v':
printf("%s\n", VERSION);
return EXIT_SUCCESS;
case 'h':
usage();
return EXIT_SUCCESS;
default:
return EXIT_FAILURE;
}
}
if (argc - optind > 0) {
fprintf(stderr, "Invalid command line parameters\n");
return EXIT_FAILURE;
}
if (bredr_path) {
unsigned long flags;
int fd;
printf("Attaching BR/EDR controller to %s\n", bredr_path);
flags = (1 << HCI_UART_RESET_ON_INIT);
fd = attach_proto(bredr_path, HCI_UART_H4, flags);
if (fd >= 0)
p[count++].fd = fd;
}
if (amp_path) {
unsigned long flags;
int fd;
printf("Attaching AMP controller to %s\n", amp_path);
flags = (1 << HCI_UART_RESET_ON_INIT) |
(1 << HCI_UART_CREATE_AMP);
fd = attach_proto(amp_path, HCI_UART_H4, flags);
if (fd >= 0)
p[count++].fd = fd;
}
if (count < 1) {
fprintf(stderr, "No controller attached\n");
return EXIT_FAILURE;
}
for (i = 0; i < count; i++) {
p[i].events = POLLERR | POLLHUP;
p[i].revents = 0;
}
while (1) {
if (poll(p, count, -1) < 0)
break;
}
for (i = 0; i < count; i++)
close(p[i].fd);
return EXIT_SUCCESS;
}