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| 1 | +/* |
| 2 | + * Copyright (C) 2014 BlueKitchen GmbH |
| 3 | + * |
| 4 | + * Redistribution and use in source and binary forms, with or without |
| 5 | + * modification, are permitted provided that the following conditions |
| 6 | + * are met: |
| 7 | + * |
| 8 | + * 1. Redistributions of source code must retain the above copyright |
| 9 | + * notice, this list of conditions and the following disclaimer. |
| 10 | + * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | + * notice, this list of conditions and the following disclaimer in the |
| 12 | + * documentation and/or other materials provided with the distribution. |
| 13 | + * 3. Neither the name of the copyright holders nor the names of |
| 14 | + * contributors may be used to endorse or promote products derived |
| 15 | + * from this software without specific prior written permission. |
| 16 | + * 4. Any redistribution, use, or modification is done solely for |
| 17 | + * personal benefit and not for any commercial purpose or for |
| 18 | + * monetary gain. |
| 19 | + * |
| 20 | + * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS |
| 21 | + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 22 | + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 23 | + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS |
| 24 | + * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 25 | + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 26 | + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 27 | + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 28 | + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 29 | + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF |
| 30 | + * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 31 | + * SUCH DAMAGE. |
| 32 | + * |
| 33 | + * Please inquire about commercial licensing options at |
| 34 | + * contact@bluekitchen-gmbh.com |
| 35 | + * |
| 36 | + */ |
| 37 | + |
| 38 | +#define BTSTACK_FILE__ "gatt_device_information_query.c" |
| 39 | + |
| 40 | +// ***************************************************************************** |
| 41 | +/* EXAMPLE_START(gatt_device_information_query): GATT Device Information Client |
| 42 | + * |
| 43 | + */ |
| 44 | + |
| 45 | +#include <stdint.h> |
| 46 | +#include <stdio.h> |
| 47 | +#include <stdlib.h> |
| 48 | +#include <string.h> |
| 49 | + |
| 50 | +#include "btstack.h" |
| 51 | + |
| 52 | +// gatt_device_information_query.gatt contains the declaration of the provided GATT Services + Characteristics |
| 53 | +// gatt_device_information_query.h contains the binary representation of gatt_device_information_query.gatt |
| 54 | +// it is generated by the build system by calling: $BTSTACK_ROOT/tool/compile_gatt.py gatt_device_information_query.gatt gatt_device_information_query.h |
| 55 | +// it needs to be regenerated when the GATT Database declared in gatt_device_information_query.gatt file is modified |
| 56 | +#include "gatt_device_information_query.h" |
| 57 | + |
| 58 | +typedef struct advertising_report { |
| 59 | + uint8_t type; |
| 60 | + uint8_t event_type; |
| 61 | + uint8_t address_type; |
| 62 | + bd_addr_t address; |
| 63 | + uint8_t rssi; |
| 64 | + uint8_t length; |
| 65 | + const uint8_t * data; |
| 66 | +} advertising_report_t; |
| 67 | + |
| 68 | +static enum { |
| 69 | + APP_STATE_IDLE, |
| 70 | + APP_STATE_W4_SCAN_RESULT, |
| 71 | + APP_STATE_W4_CONNECT, |
| 72 | + APP_STATE_CONNECTED |
| 73 | +} app_state; |
| 74 | + |
| 75 | +static int blacklist_index = 0; |
| 76 | +static bd_addr_t blacklist[20]; |
| 77 | +static advertising_report_t report; |
| 78 | + |
| 79 | +static hci_con_handle_t connection_handle; |
| 80 | + |
| 81 | +static bd_addr_t cmdline_addr; |
| 82 | +static int cmdline_addr_found = 0; |
| 83 | + |
| 84 | +static btstack_packet_callback_registration_t hci_event_callback_registration; |
| 85 | + |
| 86 | +static int blacklist_size(void){ |
| 87 | + return sizeof(blacklist) / sizeof(bd_addr_t); |
| 88 | +} |
| 89 | + |
| 90 | +static int blacklist_contains(bd_addr_t addr){ |
| 91 | + int i; |
| 92 | + for (i=0; i<blacklist_size(); i++){ |
| 93 | + if (bd_addr_cmp(addr, blacklist[i]) == 0) return 1; |
| 94 | + } |
| 95 | + return 0; |
| 96 | +} |
| 97 | + |
| 98 | +static void add_to_blacklist(bd_addr_t addr){ |
| 99 | + printf("%s added to blacklist (no device information service found).\n", bd_addr_to_str(addr)); |
| 100 | + bd_addr_copy(blacklist[blacklist_index], addr); |
| 101 | + blacklist_index = (blacklist_index + 1) % blacklist_size(); |
| 102 | +} |
| 103 | + |
| 104 | +static void dump_advertising_report(uint8_t *packet){ |
| 105 | + bd_addr_t address; |
| 106 | + gap_event_advertising_report_get_address(packet, address); |
| 107 | + |
| 108 | + printf(" * adv. event: evt-type %u, addr-type %u, addr %s, rssi %u, length adv %u, data: ", |
| 109 | + gap_event_advertising_report_get_advertising_event_type(packet), |
| 110 | + gap_event_advertising_report_get_address_type(packet), |
| 111 | + bd_addr_to_str(address), |
| 112 | + gap_event_advertising_report_get_rssi(packet), |
| 113 | + gap_event_advertising_report_get_data_length(packet)); |
| 114 | + printf_hexdump(gap_event_advertising_report_get_data(packet), gap_event_advertising_report_get_data_length(packet)); |
| 115 | + |
| 116 | +} |
| 117 | + |
| 118 | +static void handle_gatt_client_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ |
| 119 | + UNUSED(packet_type); |
| 120 | + UNUSED(channel); |
| 121 | + UNUSED(size); |
| 122 | + |
| 123 | + |
| 124 | + if (hci_event_packet_get_type(packet) != HCI_EVENT_GATTSERVICE_META){ |
| 125 | + return; |
| 126 | + } |
| 127 | + |
| 128 | + switch (hci_event_gattservice_meta_get_subevent_code(packet)){ |
| 129 | + |
| 130 | + default: |
| 131 | + break; |
| 132 | + } |
| 133 | +} |
| 134 | + |
| 135 | +static void hci_event_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ |
| 136 | + UNUSED(channel); |
| 137 | + UNUSED(size); |
| 138 | + |
| 139 | + uint8_t status; |
| 140 | + bd_addr_t address; |
| 141 | + |
| 142 | + if (packet_type != HCI_EVENT_PACKET){ |
| 143 | + return; |
| 144 | + } |
| 145 | + |
| 146 | + switch (hci_event_packet_get_type(packet)) { |
| 147 | + case BTSTACK_EVENT_STATE: |
| 148 | + // BTstack activated, get started |
| 149 | + if (btstack_event_state_get_state(packet) != HCI_STATE_WORKING) break; |
| 150 | + if (cmdline_addr_found){ |
| 151 | + printf("Connect to %s\n", bd_addr_to_str(cmdline_addr)); |
| 152 | + app_state = APP_STATE_W4_CONNECT; |
| 153 | + gap_connect(cmdline_addr, 0); |
| 154 | + break; |
| 155 | + } |
| 156 | + printf("Start scanning!\n"); |
| 157 | + app_state = APP_STATE_W4_SCAN_RESULT; |
| 158 | + gap_set_scan_parameters(0,0x0030, 0x0030); |
| 159 | + gap_start_scan(); |
| 160 | + break; |
| 161 | + |
| 162 | + case GAP_EVENT_ADVERTISING_REPORT: |
| 163 | + if (app_state != APP_STATE_W4_SCAN_RESULT) return; |
| 164 | + |
| 165 | + gap_event_advertising_report_get_address(packet, address); |
| 166 | + if (blacklist_contains(address)) { |
| 167 | + break; |
| 168 | + } |
| 169 | + dump_advertising_report(packet); |
| 170 | + |
| 171 | + // stop scanning, and connect to the device |
| 172 | + app_state = APP_STATE_W4_CONNECT; |
| 173 | + gap_stop_scan(); |
| 174 | + printf("Stop scan. Connect to device with addr %s.\n", bd_addr_to_str(report.address)); |
| 175 | + gap_connect(report.address,report.address_type); |
| 176 | + break; |
| 177 | + |
| 178 | + case HCI_EVENT_LE_META: |
| 179 | + // wait for connection complete |
| 180 | + if (hci_event_le_meta_get_subevent_code(packet) != HCI_SUBEVENT_LE_CONNECTION_COMPLETE) break; |
| 181 | + if (app_state != APP_STATE_W4_CONNECT) return; |
| 182 | + connection_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); |
| 183 | + |
| 184 | + status = device_information_service_client_query(connection_handle, handle_gatt_client_event); |
| 185 | + btstack_assert(status == ERROR_CODE_SUCCESS); |
| 186 | + |
| 187 | + app_state = APP_STATE_CONNECTED; |
| 188 | + printf("Device Information service queried.\n"); |
| 189 | + break; |
| 190 | + |
| 191 | + case HCI_EVENT_DISCONNECTION_COMPLETE: |
| 192 | + connection_handle = HCI_CON_HANDLE_INVALID; |
| 193 | + |
| 194 | + if (cmdline_addr_found){ |
| 195 | + printf("Disconnected %s\n", bd_addr_to_str(cmdline_addr)); |
| 196 | + return; |
| 197 | + } |
| 198 | + |
| 199 | + printf("Disconnected %s\n", bd_addr_to_str(report.address)); |
| 200 | + printf("Restart scan.\n"); |
| 201 | + app_state = APP_STATE_W4_SCAN_RESULT; |
| 202 | + gap_start_scan(); |
| 203 | + break; |
| 204 | + default: |
| 205 | + break; |
| 206 | + } |
| 207 | +} |
| 208 | + |
| 209 | +int btstack_main(int argc, const char * argv[]); |
| 210 | +int btstack_main(int argc, const char * argv[]){ |
| 211 | + |
| 212 | + // parse address if command line arguments are provided |
| 213 | + int arg = 1; |
| 214 | + cmdline_addr_found = 0; |
| 215 | + |
| 216 | + while (arg < argc) { |
| 217 | + if(!strcmp(argv[arg], "-a") || !strcmp(argv[arg], "--address")){ |
| 218 | + arg++; |
| 219 | + cmdline_addr_found = sscanf_bd_addr(argv[arg], cmdline_addr); |
| 220 | + arg++; |
| 221 | + if (!cmdline_addr_found) exit(1); |
| 222 | + continue; |
| 223 | + } |
| 224 | + fprintf(stderr, "\nUsage: %s [-a|--address aa:bb:cc:dd:ee:ff]\n", argv[0]); |
| 225 | + fprintf(stderr, "If no argument is provided, GATT browser will start scanning and connect to the first found device.\nTo connect to a specific device use argument [-a].\n\n"); |
| 226 | + return 0; |
| 227 | + } |
| 228 | + (void)argv; |
| 229 | + |
| 230 | + l2cap_init(); |
| 231 | + |
| 232 | + // setup ATT server - only needed if LE Peripheral does ATT queries on its own, e.g. Android phones |
| 233 | + att_server_init(profile_data, NULL, NULL); |
| 234 | + |
| 235 | + // GATT Client setup |
| 236 | + gatt_client_init(); |
| 237 | + device_information_service_client_init(); |
| 238 | + |
| 239 | + sm_init(); |
| 240 | + sm_set_io_capabilities(IO_CAPABILITY_NO_INPUT_NO_OUTPUT); |
| 241 | + |
| 242 | + hci_event_callback_registration.callback = &hci_event_handler; |
| 243 | + hci_add_event_handler(&hci_event_callback_registration); |
| 244 | + |
| 245 | + app_state = APP_STATE_IDLE; |
| 246 | + |
| 247 | + // turn on! |
| 248 | + hci_power_control(HCI_POWER_ON); |
| 249 | + |
| 250 | + return 0; |
| 251 | +} |
| 252 | + |
| 253 | +/* EXAMPLE_END */ |
| 254 | + |
| 255 | + |
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