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nuttx-apps/wireless/bluetooth/btsak/btsak_advertise.c

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/****************************************************************************
* apps/wireless/bluetooth/btsak/btsak_advertise.c
* Bluetooth Swiss Army Knife -- Advertise command
*
* Copyright (C) 2018 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Based loosely on the i8sak IEEE 802.15.4 program by Anthony Merlino and
* Sebastien Lorquet. Commands inspired for btshell example in the
* Intel/Zephyr Arduino 101 package (BSD license).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <sys/ioctl.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#include <errno.h>
#include <nuttx/wireless/bt_core.h>
#include <nuttx/wireless/bt_hci.h>
#include <nuttx/wireless/bt_ioctl.h>
#include "btsak.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#if !defined(CONFIG_BTSAK_NINSTANCES) || CONFIG_BTSAK_NINSTANCES <= 0
# undef CONFIG_BTSAK_NINSTANCES
# define CONFIG_BTSAK_NINSTANCES 3
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: btsak_advertise_showusage
*
* Description:
* Show usage of the advertise command
*
****************************************************************************/
static void btsak_advertise_showusage(FAR const char *progname,
FAR const char *cmd, int exitcode)
{
fprintf(stderr, "%s: Advertise commands:\n", cmd);
fprintf(stderr, "Usage:\n\n");
fprintf(stderr, "\t%s <ifname> %s [-h] <start|stop>\n",
progname, cmd);
fprintf(stderr, "\nWhere the options do the following:\n\n");
fprintf(stderr, "\tstart\t- Starts advertising (type ADV_IND).\n");
fprintf(stderr, "\tstop\t- Stops advertising\n");
exit(exitcode);
}
/****************************************************************************
* Name: btsak_cmd_advertisestart
*
* Description:
* Scan start command
*
****************************************************************************/
static void btsak_cmd_advertisestart(FAR struct btsak_s *btsak, FAR char *cmd,
int argc, FAR char *argv[])
{
struct bt_advertisestart_s start;
int sockfd;
int ret;
/* REVISIT: Should support all advertising type. Only ADV_IND is
* supported:
*
* ADV_IND
* Known as Advertising Indications (ADV_IND), where a peripheral device
* requests connection to any central device (i.e., not directed at a
* particular central device).
* Example: A smart watch requesting connection to any central device.
* ADV_DIRECT_IND
* Similar to ADV_IND, yet the connection request is directed at a
* specific central device.
* Example: A smart watch requesting connection to a specific central
* device.
* ADV_NONCONN_IND
* Non connectible devices, advertising information to any listening
* device.
* Example: Beacons in museums defining proximity to specific exhibits.
* ADV_SCAN_IND
* Similar to ADV_NONCONN_IND, with the option additional information via
* scan responses.
* Example: A warehouse pallet beacon allowing a central device to
* request additional information about the pallet.
*/
memset(&start, 0, sizeof(struct bt_advertisestart_s));
strncpy(start.as_name, btsak->ifname, HCI_DEVNAME_SIZE);
start.as_type = BT_LE_ADV_IND;
start.as_ad.len = 2;
start.as_ad.type = BT_EIR_FLAGS;
start.as_ad.data[0] = BT_LE_AD_GENERAL | BT_LE_AD_NO_BREDR;
start.as_sd.len = sizeof("btsak");
start.as_sd.type = BT_EIR_NAME_COMPLETE;
strcpy((FAR char *)start.as_sd.data, "btsak");
/* Perform the IOCTL to start advertising */
sockfd = btsak_socket(btsak);
if (sockfd >= 0)
{
ret = ioctl(sockfd, SIOCBT_ADVERTISESTART,
(unsigned long)((uintptr_t)&start));
if (ret < 0)
{
fprintf(stderr, "ERROR: ioctl(SIOCBT_ADVERTISESTART) failed: %d\n",
errno);
}
}
close(sockfd);
}
/****************************************************************************
* Name: btsak_cmd_advertisestop
*
* Description:
* Scan stop command
*
****************************************************************************/
static void btsak_cmd_advertisestop(FAR struct btsak_s *btsak, FAR char *cmd,
int argc, FAR char *argv[])
{
struct bt_advertisestop_s stop;
int sockfd;
int ret;
/* Perform the IOCTL to stop advertising */
strncpy(stop.at_name, btsak->ifname, HCI_DEVNAME_SIZE);
sockfd = btsak_socket(btsak);
if (sockfd >= 0)
{
ret = ioctl(sockfd, SIOCBT_ADVERTISESTOP,
(unsigned long)((uintptr_t)&stop));
if (ret < 0)
{
fprintf(stderr, "ERROR: ioctl(SIOCBT_ADVERTISESTOP) failed: %d\n",
errno);
}
}
close(sockfd);
}
/****************************************************************************
* Public functions
****************************************************************************/
/****************************************************************************
* Name: btsak_cmd_advertise
*
* Description:
* advertise [-h] <start [-d] |get|stop> command
*
****************************************************************************/
void btsak_cmd_advertise(FAR struct btsak_s *btsak, int argc, FAR char *argv[])
{
int argind;
/* Verify that an option was provided */
argind = 1;
if (argc < 2)
{
fprintf(stderr, "ERROR: Missing advertise command\n");
btsak_advertise_showusage(btsak->progname, argv[0], EXIT_FAILURE);
}
/* Check for command */
if (strcmp(argv[argind], "-h") == 0)
{
btsak_advertise_showusage(btsak->progname, argv[0], EXIT_SUCCESS);
}
else if (strcmp(argv[argind], "start") == 0)
{
btsak_cmd_advertisestart(btsak, argv[0], argc - argind, &argv[argind]);
}
else if (strcmp(argv[argind], "stop") == 0)
{
btsak_cmd_advertisestop(btsak, argv[0], argc - argind, &argv[argind]);
}
else
{
fprintf(stderr, "ERROR: Unrecognized advertise command: %s\n", argv[argind]);
btsak_advertise_showusage(btsak->progname, argv[0], EXIT_FAILURE);
}
}
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