tools: Add simple btattach utility

1 files changed, 136 insertions, 0 deletions

diff --git a/tools/btattach.c b/tools/btattach.c
new file mode 100644
index 000000000..a69c49e46
--- /dev/null
+++ b/tools/btattach.c
@@ -0,0 +1,136 @@
+/*
+ *
+ *  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 <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;
+}
+
+int main(int argc, char *argv[])
+{
+	struct pollfd p[5];
+	unsigned long flags = 0;
+	int fd, i, count = 0;
+
+	flags |= (1 << HCI_UART_RESET_ON_INIT);
+
+	fd = attach_proto("/dev/ttyS0", HCI_UART_H4, flags);
+	if (fd >= 0)
+		p[count++].fd = fd;
+
+	flags |= (1 << HCI_UART_CREATE_AMP);
+
+	fd = attach_proto("/dev/ttyS1", HCI_UART_H4, flags);
+	if (fd >= 0)
+		p[count++].fd = fd;
+
+	for (i = 0; i < count; i++)
+		p[i].events = POLLERR | POLLHUP;
+
+	while (1) {
+		poll(p, count, -1);
+        }
+
+	for (i = 0; i < count; i++)
+		close(p[i].fd);
+
+	return EXIT_SUCCESS;
+}