mirror of
https://github.com/bluekitchen/btstack.git
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128 lines
4.4 KiB
C
128 lines
4.4 KiB
C
/*
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* Copyright (C) 2014 BlueKitchen GmbH
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holders nor the names of
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* 4. Any redistribution, use, or modification is done solely for
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* personal benefit and not for any commercial purpose or for
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* monetary gain.
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*
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* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN
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* GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Please inquire about commercial licensing options at
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* contact@bluekitchen-gmbh.com
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*
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*/
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#define BTSTACK_FILE__ "gap_link_keys.c"
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// *****************************************************************************
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/* EXAMPLE_START(gap_link_keys): GAP Link Key Management (Classic)
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*
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* @text Shows how to iterate over the Classic Link Keys stored in NVS
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* Link Keys are per device-device bonding. If the Bluetooth Controller can be swapped,
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* e.g. on desktop systems, a Link Key DB for each Controller is needed.
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* We need to wait until the Bluetooth Stack has started up and selected
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* the correct Link Key DB based on the Controller's BD_ADDR.
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*/
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// *****************************************************************************
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "btstack.h"
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static btstack_packet_callback_registration_t hci_event_callback_registration;
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/* @section GAP Link Key Logic
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*
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* @text List stored link keys
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*/
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static void list_link_keys(void){
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bd_addr_t addr;
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link_key_t link_key;
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link_key_type_t type;
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btstack_link_key_iterator_t it;
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int ok = gap_link_key_iterator_init(&it);
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if (!ok) {
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printf("Link key iterator not implemented\n");
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return;
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}
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printf("Stored link keys: \n");
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while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){
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printf("%s - type %u, key: ", bd_addr_to_str(addr), (int) type);
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printf_hexdump(link_key, 16);
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}
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printf(".\n");
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gap_link_key_iterator_done(&it);
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}
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/* @section Bluetooth Logic
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*
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* @text Wait for Bluetooth startup before listing the stored link keys
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*/
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static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
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UNUSED(channel);
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UNUSED(size);
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if (packet_type != HCI_EVENT_PACKET) return;
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switch(hci_event_packet_get_type(packet)){
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case BTSTACK_EVENT_STATE:
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if (btstack_event_state_get_state(packet) == HCI_STATE_WORKING){
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list_link_keys();
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break;
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}
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break;
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default:
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break;
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}
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}
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/* @section Main Application Setup
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*
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* @text Listing MainConfiguration shows main application code.
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* It registers the HCI packet handler and starts the Bluetooth stack.
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*/
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/* LISTING_START(MainConfiguration): Setup packet handler for GAP inquiry */
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int btstack_main(int argc, const char * argv[]);
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int btstack_main(int argc, const char * argv[]) {
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(void)argc;
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(void)argv;
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hci_event_callback_registration.callback = &packet_handler;
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hci_add_event_handler(&hci_event_callback_registration);
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// turn on!
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hci_power_control(HCI_POWER_ON);
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return 0;
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}
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/* LISTING_END */
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/* EXAMPLE_END */
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