1 /* 2 * Copyright (C) 2021 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 BLUEKITCHEN 24 * GMBH 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 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hids_client.c" 39 40 #include "btstack_config.h" 41 42 #ifdef ENABLE_TESTING_SUPPORT 43 #include <stdio.h> 44 #endif 45 46 #include <stdint.h> 47 #include <string.h> 48 49 #include "ble/gatt-service/hids_client.h" 50 51 #include "btstack_memory.h" 52 #include "ble/core.h" 53 #include "ble/gatt_client.h" 54 #include "bluetooth_gatt.h" 55 #include "btstack_debug.h" 56 #include "btstack_event.h" 57 #include "btstack_run_loop.h" 58 #include "gap.h" 59 #include "ble/gatt_service_client.h" 60 61 #define HID_REPORT_MODE_REPORT_ID 3 62 #define HID_REPORT_MODE_REPORT_MAP_ID 4 63 #define HID_REPORT_MODE_HID_INFORMATION_ID 5 64 #define HID_REPORT_MODE_HID_CONTROL_POINT_ID 6 65 66 static btstack_packet_callback_registration_t hci_event_callback_registration; 67 68 static btstack_linked_list_t clients; 69 static uint16_t hids_cid_counter = 0; 70 71 static uint8_t * hids_client_descriptor_storage; 72 static uint16_t hids_client_descriptor_storage_len; 73 74 static void handle_gatt_client_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 75 static void hids_client_handle_can_write_without_reponse(void * context); 76 77 #ifdef ENABLE_TESTING_SUPPORT 78 static char * hid_characteristic_name(uint16_t uuid){ 79 switch (uuid){ 80 case ORG_BLUETOOTH_CHARACTERISTIC_PROTOCOL_MODE: 81 return "PROTOCOL_MODE"; 82 83 case ORG_BLUETOOTH_CHARACTERISTIC_BOOT_KEYBOARD_INPUT_REPORT: 84 return "BOOT_KEYBOARD_INPUT_REPORT"; 85 86 case ORG_BLUETOOTH_CHARACTERISTIC_BOOT_MOUSE_INPUT_REPORT: 87 return "BOOT_MOUSE_INPUT_REPORT"; 88 89 case ORG_BLUETOOTH_CHARACTERISTIC_BOOT_KEYBOARD_OUTPUT_REPORT: 90 return "BOOT_KEYBOARD_OUTPUT_REPORT"; 91 92 case ORG_BLUETOOTH_CHARACTERISTIC_REPORT: 93 return "REPORT"; 94 95 case ORG_BLUETOOTH_CHARACTERISTIC_REPORT_MAP: 96 return "REPORT_MAP"; 97 98 case ORG_BLUETOOTH_CHARACTERISTIC_HID_INFORMATION: 99 return "HID_INFORMATION"; 100 101 case ORG_BLUETOOTH_CHARACTERISTIC_HID_CONTROL_POINT: 102 return "HID_CONTROL_POINT"; 103 default: 104 return "UKNOWN"; 105 } 106 } 107 #endif 108 109 static hids_client_t * hids_get_client_for_con_handle(hci_con_handle_t con_handle){ 110 btstack_linked_list_iterator_t it; 111 btstack_linked_list_iterator_init(&it, &clients); 112 while (btstack_linked_list_iterator_has_next(&it)){ 113 hids_client_t * client = (hids_client_t *)btstack_linked_list_iterator_next(&it); 114 if (client->con_handle != con_handle) continue; 115 return client; 116 } 117 return NULL; 118 } 119 120 static hids_client_t * hids_get_client_for_cid(uint16_t hids_cid){ 121 btstack_linked_list_iterator_t it; 122 btstack_linked_list_iterator_init(&it, &clients); 123 while (btstack_linked_list_iterator_has_next(&it)){ 124 hids_client_t * client = (hids_client_t *)btstack_linked_list_iterator_next(&it); 125 if (client->cid != hids_cid) continue; 126 return client; 127 } 128 return NULL; 129 } 130 131 132 // START Descriptor Storage Util 133 134 static uint16_t hids_client_descriptors_len(hids_client_t * client){ 135 uint16_t descriptors_len = 0; 136 uint8_t service_index; 137 for (service_index = 0; service_index < client->num_instances; service_index++){ 138 descriptors_len += client->services[service_index].hid_descriptor_len; 139 } 140 return descriptors_len; 141 } 142 143 static uint16_t hids_client_descriptor_storage_get_available_space(void){ 144 // assumes all descriptors are back to back 145 uint16_t free_space = hids_client_descriptor_storage_len; 146 btstack_linked_list_iterator_t it; 147 btstack_linked_list_iterator_init(&it, &clients); 148 while (btstack_linked_list_iterator_has_next(&it)){ 149 hids_client_t * client = (hids_client_t *)btstack_linked_list_iterator_next(&it); 150 free_space -= hids_client_descriptors_len(client); 151 } 152 return free_space; 153 } 154 155 static void hids_client_descriptor_storage_init(hids_client_t * client, uint8_t service_index){ 156 // reserve remaining space for this connection 157 uint16_t available_space = hids_client_descriptor_storage_get_available_space(); 158 client->services[service_index].hid_descriptor_len = 0; 159 client->services[service_index].hid_descriptor_max_len = available_space; 160 client->services[service_index].hid_descriptor_offset = hids_client_descriptor_storage_len - available_space; 161 } 162 163 static bool hids_client_descriptor_storage_store(hids_client_t * client, uint8_t service_index, uint8_t byte){ 164 // store single hid descriptor byte 165 if (client->services[service_index].hid_descriptor_len >= client->services[service_index].hid_descriptor_max_len) return false; 166 167 hids_client_descriptor_storage[client->services[service_index].hid_descriptor_offset + client->services[service_index].hid_descriptor_len] = byte; 168 client->services[service_index].hid_descriptor_len++; 169 return true; 170 } 171 172 static void hids_client_descriptor_storage_delete(hids_client_t * client){ 173 uint8_t service_index; 174 175 // calculate descriptors len 176 uint16_t descriptors_len = hids_client_descriptors_len(client); 177 178 if (descriptors_len > 0){ 179 // move higher descriptors down 180 uint16_t next_offset = client->services[0].hid_descriptor_offset + descriptors_len; 181 memmove(&hids_client_descriptor_storage[client->services[0].hid_descriptor_offset], 182 &hids_client_descriptor_storage[next_offset], 183 hids_client_descriptor_storage_len - next_offset); 184 185 // fix descriptor offset of higher descriptors 186 btstack_linked_list_iterator_t it; 187 btstack_linked_list_iterator_init(&it, &clients); 188 while (btstack_linked_list_iterator_has_next(&it)){ 189 hids_client_t * conn = (hids_client_t *)btstack_linked_list_iterator_next(&it); 190 if (conn == client) continue; 191 for (service_index = 0; service_index < client->num_instances; service_index++){ 192 if (conn->services[service_index].hid_descriptor_offset >= next_offset){ 193 conn->services[service_index].hid_descriptor_offset -= descriptors_len; 194 } 195 } 196 } 197 } 198 199 // clear descriptors 200 for (service_index = 0; service_index < client->num_instances; service_index++){ 201 client->services[service_index].hid_descriptor_len = 0; 202 client->services[service_index].hid_descriptor_offset = 0; 203 } 204 } 205 206 const uint8_t * hids_client_descriptor_storage_get_descriptor_data(uint16_t hids_cid, uint8_t service_index){ 207 hids_client_t * client = hids_get_client_for_cid(hids_cid); 208 if (client == NULL){ 209 return NULL; 210 } 211 if (service_index >= client->num_instances){ 212 return NULL; 213 } 214 return &hids_client_descriptor_storage[client->services[service_index].hid_descriptor_offset]; 215 } 216 217 uint16_t hids_client_descriptor_storage_get_descriptor_len(uint16_t hids_cid, uint8_t service_index){ 218 hids_client_t * client = hids_get_client_for_cid(hids_cid); 219 if (client == NULL){ 220 return 0; 221 } 222 if (service_index >= client->num_instances){ 223 return 0; 224 } 225 return client->services[service_index].hid_descriptor_len; 226 } 227 228 // END Descriptor Storage Util 229 230 static uint16_t hids_get_next_cid(void){ 231 if (hids_cid_counter == 0xffff) { 232 hids_cid_counter = 1; 233 } else { 234 hids_cid_counter++; 235 } 236 return hids_cid_counter; 237 } 238 239 static uint8_t find_report_index_for_value_handle(hids_client_t * client, uint16_t value_handle){ 240 uint8_t i; 241 for (i = 0; i < client->num_reports; i++){ 242 if (client->reports[i].value_handle == value_handle){ 243 return i; 244 } 245 } 246 return HIDS_CLIENT_INVALID_REPORT_INDEX; 247 } 248 249 static uint8_t find_external_report_index_for_value_handle(hids_client_t * client, uint16_t value_handle){ 250 uint8_t i; 251 for (i = 0; i < client->num_external_reports; i++){ 252 if (client->external_reports[i].value_handle == value_handle){ 253 return i; 254 } 255 } 256 return HIDS_CLIENT_INVALID_REPORT_INDEX; 257 } 258 259 static bool external_report_index_for_uuid_exists(hids_client_t * client, uint16_t uuid16){ 260 uint8_t i; 261 for (i = 0; i < client->num_external_reports; i++){ 262 if (client->external_reports[i].external_report_reference_uuid == uuid16){ 263 return true; 264 } 265 } 266 return false; 267 } 268 269 static uint8_t find_report_index_for_report_id_and_report_type(hids_client_t * client, uint8_t report_id, hid_report_type_t report_type){ 270 uint8_t i; 271 272 for (i = 0; i < client->num_reports; i++){ 273 hids_client_report_t report = client->reports[i]; 274 hid_protocol_mode_t protocol_mode = client->services[report.service_index].protocol_mode; 275 276 if (protocol_mode == HID_PROTOCOL_MODE_BOOT){ 277 if (!client->reports[i].boot_report){ 278 continue; 279 } 280 } else if (protocol_mode == HID_PROTOCOL_MODE_REPORT){ 281 if (client->reports[i].boot_report){ 282 continue; 283 } 284 } 285 286 if (report.report_id == report_id && report.report_type == report_type){ 287 return i; 288 } 289 } 290 return HIDS_CLIENT_INVALID_REPORT_INDEX; 291 } 292 293 static uint8_t hids_client_add_characteristic(hids_client_t * client, gatt_client_characteristic_t * characteristic, uint8_t report_id, hid_report_type_t report_type, bool boot_report){ 294 295 uint8_t report_index = find_external_report_index_for_value_handle(client, characteristic->value_handle); 296 if (report_index != HIDS_CLIENT_INVALID_REPORT_INDEX){ 297 return report_index; 298 } 299 report_index = client->num_reports; 300 301 if (report_index < HIDS_CLIENT_NUM_REPORTS) { 302 client->reports[report_index].value_handle = characteristic->value_handle; 303 client->reports[report_index].end_handle = characteristic->end_handle; 304 client->reports[report_index].properties = characteristic->properties; 305 306 client->reports[report_index].service_index = client->service_index; 307 client->reports[report_index].report_id = report_id; 308 client->reports[report_index].report_type = report_type; 309 client->reports[report_index].boot_report = boot_report; 310 311 log_info("add index %d, id %d, type %d, value handle 0x%02x, properties 0x%02x", report_index, report_id, report_type, characteristic->value_handle, characteristic->properties); 312 client->num_reports++; 313 return report_index; 314 } else { 315 log_info("not enough storage, increase HIDS_CLIENT_NUM_REPORTS"); 316 return HIDS_CLIENT_INVALID_REPORT_INDEX; 317 } 318 } 319 320 static uint8_t hids_client_add_external_report(hids_client_t * client, gatt_client_characteristic_descriptor_t * characteristic_descriptor){ 321 uint8_t report_index = client->num_external_reports; 322 323 if (report_index < HIDS_CLIENT_NUM_REPORTS) { 324 client->external_reports[report_index].value_handle = characteristic_descriptor->handle; 325 client->external_reports[report_index].service_index = client->service_index; 326 327 client->num_external_reports++; 328 log_info("add external index %d [%d], value handle 0x%02x", report_index, client->num_external_reports, characteristic_descriptor->handle); 329 return report_index; 330 } else { 331 log_info("not enough storage, increase HIDS_CLIENT_NUM_REPORTS"); 332 return HIDS_CLIENT_INVALID_REPORT_INDEX; 333 } 334 } 335 336 static uint8_t hids_client_get_next_active_report_map_index(hids_client_t * client){ 337 uint8_t i; 338 for (i = client->service_index; i < client->num_instances; i++){ 339 if (client->services[i].report_map_value_handle != 0){ 340 return i; 341 } 342 } 343 client->service_index = HIDS_CLIENT_INVALID_REPORT_INDEX; 344 return HIDS_CLIENT_INVALID_REPORT_INDEX; 345 } 346 347 static bool hids_client_report_query_next_report_map(hids_client_t * client){ 348 client->service_index++; 349 if (hids_client_get_next_active_report_map_index(client) != HIDS_CLIENT_INVALID_REPORT_INDEX){ 350 client->state = HIDS_CLIENT_STATE_W2_READ_REPORT_MAP_HID_DESCRIPTOR; 351 return true; 352 } 353 return false; 354 } 355 356 static bool hids_client_report_map_query_init(hids_client_t * client){ 357 client->service_index = 0; 358 359 if (hids_client_get_next_active_report_map_index(client) != HIDS_CLIENT_INVALID_REPORT_INDEX){ 360 client->state = HIDS_CLIENT_STATE_W2_READ_REPORT_MAP_HID_DESCRIPTOR; 361 return true; 362 } 363 return false; 364 } 365 366 static bool hids_client_report_query_next_report_map_uuid(hids_client_t * client){ 367 client->report_index++; 368 if (client->report_index < client->num_external_reports){ 369 client->state = HIDS_CLIENT_STATE_W2_REPORT_MAP_READ_EXTERNAL_REPORT_REFERENCE_UUID; 370 return true; 371 } 372 return false; 373 } 374 375 static bool hids_client_report_map_uuid_query_init(hids_client_t * client){ 376 client->report_index = 0; 377 if (client->num_external_reports > 0){ 378 client->state = HIDS_CLIENT_STATE_W2_REPORT_MAP_READ_EXTERNAL_REPORT_REFERENCE_UUID; 379 return true; 380 } 381 return false; 382 } 383 384 static uint8_t hids_client_get_next_report_index(hids_client_t * client){ 385 uint8_t i; 386 uint8_t index = HIDS_CLIENT_INVALID_REPORT_INDEX; 387 388 for (i = client->report_index; i < client->num_reports && (index == HIDS_CLIENT_INVALID_REPORT_INDEX); i++){ 389 hids_client_report_t report = client->reports[i]; 390 if (!report.boot_report){ 391 if (report.report_type == HID_REPORT_TYPE_RESERVED && report.report_id == HID_REPORT_MODE_REPORT_ID){ 392 index = i; 393 client->service_index = report.service_index; 394 break; 395 } 396 } 397 } 398 client->report_index = index; 399 return index; 400 } 401 402 static bool hids_client_report_query_next_report(hids_client_t * client){ 403 client->report_index++; 404 if (hids_client_get_next_report_index(client) != HIDS_CLIENT_INVALID_REPORT_INDEX){ 405 client->state = HIDS_CLIENT_STATE_W2_FIND_REPORT; 406 return true; 407 } 408 return false; 409 } 410 411 static bool hids_client_report_query_init(hids_client_t * client){ 412 client->report_index = 0; 413 414 if (hids_client_get_next_report_index(client) != HIDS_CLIENT_INVALID_REPORT_INDEX){ 415 client->state = HIDS_CLIENT_STATE_W2_FIND_REPORT; 416 return true; 417 } 418 return false; 419 } 420 421 static uint8_t hids_client_get_next_notification_report_index(hids_client_t * client){ 422 uint8_t i; 423 uint8_t index = HIDS_CLIENT_INVALID_REPORT_INDEX; 424 425 for (i = client->report_index; i < client->num_reports && (index == HIDS_CLIENT_INVALID_REPORT_INDEX); i++){ 426 hids_client_report_t report = client->reports[i]; 427 hid_protocol_mode_t protocol_mode = client->services[report.service_index].protocol_mode; 428 429 if (protocol_mode == HID_PROTOCOL_MODE_BOOT){ 430 if (!client->reports[i].boot_report){ 431 continue; 432 } 433 } else if (protocol_mode == HID_PROTOCOL_MODE_REPORT){ 434 if (client->reports[i].boot_report){ 435 continue; 436 } 437 } 438 if (report.report_type == HID_REPORT_TYPE_INPUT){ 439 index = i; 440 } 441 } 442 client->report_index = index; 443 return index; 444 } 445 446 static bool hids_client_report_next_notification_report_index(hids_client_t * client){ 447 client->report_index++; 448 if (hids_client_get_next_notification_report_index(client) != HIDS_CLIENT_INVALID_REPORT_INDEX){ 449 client->state = HIDS_CLIENT_STATE_W2_ENABLE_INPUT_REPORTS; 450 return true; 451 } 452 return false; 453 } 454 455 static bool hids_client_report_notifications_init(hids_client_t * client){ 456 #ifdef ENABLE_TESTING_SUPPORT 457 printf("\nRegister for Notifications: \n"); 458 #endif 459 client->report_index = 0; 460 461 if (hids_client_get_next_notification_report_index(client) != HIDS_CLIENT_INVALID_REPORT_INDEX){ 462 client->state = HIDS_CLIENT_STATE_W2_ENABLE_INPUT_REPORTS; 463 return true; 464 } 465 return false; 466 } 467 468 static bool hids_client_report_next_notifications_configuration_report_index(hids_client_t * client){ 469 client->report_index++; 470 if (hids_client_get_next_notification_report_index(client) != HIDS_CLIENT_INVALID_REPORT_INDEX){ 471 client->state = HIDS_CLIENT_STATE_W2_CONFIGURE_NOTIFICATIONS; 472 return true; 473 } 474 return false; 475 } 476 477 static bool hids_client_notifications_configuration_init(hids_client_t * client){ 478 #ifdef ENABLE_TESTING_SUPPORT 479 printf("\nConfigure for Notifications: \n"); 480 #endif 481 client->report_index = 0; 482 483 if (hids_client_get_next_notification_report_index(client) != HIDS_CLIENT_INVALID_REPORT_INDEX){ 484 client->state = HIDS_CLIENT_STATE_W2_CONFIGURE_NOTIFICATIONS; 485 return true; 486 } 487 return false; 488 } 489 490 static hids_client_t * hids_create_client(hci_con_handle_t con_handle, uint16_t cid){ 491 hids_client_t * client = btstack_memory_hids_client_get(); 492 if (!client){ 493 log_error("Not enough memory to create client"); 494 return NULL; 495 } 496 client->state = HIDS_CLIENT_STATE_IDLE; 497 client->cid = cid; 498 client->con_handle = con_handle; 499 500 btstack_linked_list_add(&clients, (btstack_linked_item_t *) client); 501 return client; 502 } 503 504 static void hids_finalize_client(hids_client_t * client){ 505 // stop listening 506 uint8_t i; 507 for (i = 0; i < client->num_reports; i++){ 508 gatt_client_stop_listening_for_characteristic_value_updates(&client->reports[i].notification_listener); 509 } 510 511 hids_client_descriptor_storage_delete(client); 512 btstack_linked_list_remove(&clients, (btstack_linked_item_t *) client); 513 btstack_memory_hids_client_free(client); 514 } 515 516 517 static void hids_emit_connection_established(hids_client_t * client, uint8_t status){ 518 uint8_t event[8]; 519 int pos = 0; 520 event[pos++] = HCI_EVENT_GATTSERVICE_META; 521 event[pos++] = sizeof(event) - 2; 522 event[pos++] = GATTSERVICE_SUBEVENT_HID_SERVICE_CONNECTED; 523 little_endian_store_16(event, pos, client->cid); 524 pos += 2; 525 event[pos++] = status; 526 event[pos++] = client->services[0].protocol_mode; 527 event[pos++] = client->num_instances; 528 (*client->client_handler)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 529 } 530 531 static void hids_emit_disconnected(btstack_packet_handler_t packet_handler, uint16_t cid){ 532 uint8_t event[5]; 533 int pos = 0; 534 event[pos++] = HCI_EVENT_GATTSERVICE_META; 535 event[pos++] = sizeof(event) - 2; 536 event[pos++] = GATTSERVICE_SUBEVENT_HID_SERVICE_DISCONNECTED; 537 little_endian_store_16(event, pos, cid); 538 pos += 2; 539 btstack_assert(pos == sizeof(event)); 540 (*packet_handler)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 541 } 542 543 static void hids_emit_notifications_configuration(hids_client_t * client){ 544 uint8_t event[6]; 545 int pos = 0; 546 event[pos++] = HCI_EVENT_GATTSERVICE_META; 547 event[pos++] = sizeof(event) - 2; 548 event[pos++] = GATTSERVICE_SUBEVENT_HID_SERVICE_REPORTS_NOTIFICATION; 549 little_endian_store_16(event, pos, client->cid); 550 pos += 2; 551 event[pos++] = client->value; 552 (*client->client_handler)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 553 } 554 555 static uint16_t hids_client_setup_report_event(uint8_t subevent, hids_client_t *client, uint8_t report_index, uint8_t *buffer, 556 uint16_t report_len) { 557 uint16_t pos = 0; 558 buffer[pos++] = HCI_EVENT_GATTSERVICE_META; 559 pos++; // skip len 560 buffer[pos++] = subevent; 561 little_endian_store_16(buffer, pos, client->cid); 562 pos += 2; 563 buffer[pos++] = client->reports[report_index].service_index; 564 buffer[pos++] = client->reports[report_index].report_id; 565 little_endian_store_16(buffer, pos, report_len); 566 pos += 2; 567 buffer[1] = pos + report_len - 2; 568 return pos; 569 } 570 571 static void hids_client_setup_report_event_with_report_id(hids_client_t * client, uint8_t report_index, uint8_t *buffer, uint16_t report_len){ 572 uint16_t pos = hids_client_setup_report_event(GATTSERVICE_SUBEVENT_HID_REPORT, client, report_index, buffer, 573 report_len + 1); 574 buffer[pos] = client->reports[report_index].report_id; 575 } 576 577 static void hids_client_emit_hid_information_event(hids_client_t * client, const uint8_t *value, uint16_t value_len){ 578 if (value_len != 4) return; 579 580 uint8_t event[11]; 581 int pos = 0; 582 event[pos++] = HCI_EVENT_GATTSERVICE_META; 583 event[pos++] = sizeof(event) - 2; 584 event[pos++] = GATTSERVICE_SUBEVENT_HID_INFORMATION; 585 little_endian_store_16(event, pos, client->cid); 586 pos += 2; 587 event[pos++] = client->service_index; 588 589 memcpy(event+pos, value, 3); 590 pos += 3; 591 event[pos++] = (value[3] & 0x02) >> 1; 592 event[pos++] = value[3] & 0x01; 593 594 (*client->client_handler)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 595 } 596 597 static void hids_client_emit_protocol_mode_event(hids_client_t * client, const uint8_t *value, uint16_t value_len){ 598 if (value_len != 1) return; 599 600 uint8_t event[11]; 601 int pos = 0; 602 event[pos++] = HCI_EVENT_GATTSERVICE_META; 603 event[pos++] = sizeof(event) - 2; 604 event[pos++] = GATTSERVICE_SUBEVENT_HID_PROTOCOL_MODE; 605 little_endian_store_16(event, pos, client->cid); 606 pos += 2; 607 event[pos++] = client->service_index; 608 event[pos++] = value[0]; 609 (*client->client_handler)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 610 } 611 612 static void handle_notification_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size) { 613 UNUSED(packet_type); 614 UNUSED(channel); 615 616 if (hci_event_packet_get_type(packet) != GATT_EVENT_NOTIFICATION) return; 617 618 hids_client_t * client = hids_get_client_for_con_handle(gatt_event_notification_get_handle(packet)); 619 if (client == NULL) return; 620 621 uint8_t report_index = find_report_index_for_value_handle(client, gatt_event_notification_get_value_handle(packet)); 622 if (report_index == HIDS_CLIENT_INVALID_REPORT_INDEX){ 623 return; 624 } 625 626 uint8_t * in_place_event = &packet[-2]; 627 hids_client_setup_report_event_with_report_id(client, report_index, in_place_event, 628 gatt_event_notification_get_value_length(packet)); 629 (*client->client_handler)(HCI_EVENT_GATTSERVICE_META, client->cid, in_place_event, size + 2); 630 } 631 632 static void handle_report_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size) { 633 UNUSED(packet_type); 634 UNUSED(channel); 635 636 if (hci_event_packet_get_type(packet) != GATT_EVENT_CHARACTERISTIC_VALUE_QUERY_RESULT) return; 637 638 hids_client_t * client = hids_get_client_for_con_handle(gatt_event_characteristic_value_query_result_get_handle(packet)); 639 if (client == NULL) return; 640 641 if (client->state != HIDS_CLIENT_W4_GET_REPORT_RESULT){ 642 return; 643 } 644 client->state = HIDS_CLIENT_STATE_CONNECTED; 645 646 uint8_t report_index = find_report_index_for_value_handle(client, gatt_event_characteristic_value_query_result_get_value_handle(packet)); 647 if (report_index == HIDS_CLIENT_INVALID_REPORT_INDEX){ 648 return; 649 } 650 651 uint8_t * in_place_event = &packet[-2]; 652 hids_client_setup_report_event_with_report_id(client, report_index, in_place_event, 653 gatt_event_characteristic_value_query_result_get_value_length(packet)); 654 (*client->client_handler)(HCI_EVENT_GATTSERVICE_META, client->cid, in_place_event, size + 2); 655 } 656 657 static void hids_run_for_client(hids_client_t * client){ 658 uint8_t att_status; 659 gatt_client_service_t service; 660 gatt_client_characteristic_t characteristic; 661 662 switch (client->state){ 663 case HIDS_CLIENT_STATE_W2_QUERY_SERVICE: 664 #ifdef ENABLE_TESTING_SUPPORT 665 printf("\n\nQuery Services:\n"); 666 #endif 667 client->state = HIDS_CLIENT_STATE_W4_SERVICE_RESULT; 668 669 // result in GATT_EVENT_SERVICE_QUERY_RESULT 670 att_status = gatt_client_discover_primary_services_by_uuid16(handle_gatt_client_event, client->con_handle, ORG_BLUETOOTH_SERVICE_HUMAN_INTERFACE_DEVICE); 671 UNUSED(att_status); 672 break; 673 674 case HIDS_CLIENT_STATE_W2_QUERY_CHARACTERISTIC: 675 #ifdef ENABLE_TESTING_SUPPORT 676 printf("\n\nQuery Characteristics of service %d:\n", client->service_index); 677 #endif 678 client->state = HIDS_CLIENT_STATE_W4_CHARACTERISTIC_RESULT; 679 680 service.start_group_handle = client->services[client->service_index].start_handle; 681 service.end_group_handle = client->services[client->service_index].end_handle; 682 683 // result in GATT_EVENT_CHARACTERISTIC_QUERY_RESULT 684 att_status = gatt_client_discover_characteristics_for_service(&handle_gatt_client_event, client->con_handle, &service); 685 686 UNUSED(att_status); 687 break; 688 689 case HIDS_CLIENT_STATE_W2_READ_REPORT_MAP_HID_DESCRIPTOR: 690 #ifdef ENABLE_TESTING_SUPPORT 691 printf("\n\nRead REPORT_MAP (Handle 0x%04X) HID Descriptor of service %d:\n", client->services[client->service_index].report_map_value_handle, client->service_index); 692 #endif 693 client->state = HIDS_CLIENT_STATE_W4_REPORT_MAP_HID_DESCRIPTOR; 694 695 // result in GATT_EVENT_LONG_CHARACTERISTIC_VALUE_QUERY_RESULT 696 att_status = gatt_client_read_long_value_of_characteristic_using_value_handle(&handle_gatt_client_event, client->con_handle, client->services[client->service_index].report_map_value_handle); 697 UNUSED(att_status); 698 break; 699 700 case HIDS_CLIENT_STATE_W2_REPORT_MAP_DISCOVER_CHARACTERISTIC_DESCRIPTORS: 701 #ifdef ENABLE_TESTING_SUPPORT 702 printf("\nDiscover REPORT_MAP (Handle 0x%04X) Characteristic Descriptors of service %d:\n", client->services[client->service_index].report_map_value_handle, client->service_index); 703 #endif 704 client->state = HIDS_CLIENT_STATE_W4_REPORT_MAP_CHARACTERISTIC_DESCRIPTORS_RESULT; 705 706 characteristic.value_handle = client->services[client->service_index].report_map_value_handle; 707 characteristic.end_handle = client->services[client->service_index].report_map_end_handle; 708 709 // result in GATT_EVENT_ALL_CHARACTERISTIC_DESCRIPTORS_QUERY_RESULT 710 att_status = gatt_client_discover_characteristic_descriptors(&handle_gatt_client_event, client->con_handle, &characteristic); 711 UNUSED(att_status); 712 break; 713 714 case HIDS_CLIENT_STATE_W2_REPORT_MAP_READ_EXTERNAL_REPORT_REFERENCE_UUID: 715 #ifdef ENABLE_TESTING_SUPPORT 716 printf("\nRead external chr UUID (Handle 0x%04X) Characteristic Descriptors, service index %d:\n", client->external_reports[client->report_index].value_handle, client->service_index); 717 #endif 718 client->state = HIDS_CLIENT_STATE_W4_REPORT_MAP_EXTERNAL_REPORT_REFERENCE_UUID; 719 720 // result in GATT_EVENT_CHARACTERISTIC_DESCRIPTOR_QUERY_RESULT 721 att_status = gatt_client_read_characteristic_descriptor_using_descriptor_handle(&handle_gatt_client_event, client->con_handle, client->external_reports[client->report_index].value_handle); 722 UNUSED(att_status); 723 break; 724 725 case HIDS_CLIENT_STATE_W2_DISCOVER_EXTERNAL_REPORT_CHARACTERISTIC: 726 #ifdef ENABLE_TESTING_SUPPORT 727 printf("\nDiscover External Report Characteristic:\n"); 728 #endif 729 client->state = HIDS_CLIENT_STATE_W4_EXTERNAL_REPORT_CHARACTERISTIC_RESULT; 730 731 service.start_group_handle = 0x0001; 732 service.end_group_handle = 0xffff; 733 734 // Result in GATT_EVENT_CHARACTERISTIC_QUERY_RESULT 735 att_status = gatt_client_discover_characteristics_for_service(&handle_gatt_client_event, client->con_handle, &service); 736 UNUSED(att_status); 737 break; 738 739 case HIDS_CLIENT_STATE_W2_FIND_REPORT: 740 #ifdef ENABLE_TESTING_SUPPORT 741 printf("\nQuery Report Characteristic Descriptors [%d, %d, 0x%04X]:\n", 742 client->report_index, 743 client->reports[client->report_index].service_index, 744 client->reports[client->report_index].value_handle); 745 #endif 746 client->state = HIDS_CLIENT_STATE_W4_REPORT_FOUND; 747 client->handle = 0; 748 749 characteristic.value_handle = client->reports[client->report_index].value_handle; 750 characteristic.end_handle = client->reports[client->report_index].end_handle; 751 characteristic.properties = client->reports[client->report_index].properties; 752 753 // result in GATT_EVENT_ALL_CHARACTERISTIC_DESCRIPTORS_QUERY_RESULT 754 att_status = gatt_client_discover_characteristic_descriptors(&handle_gatt_client_event, client->con_handle, &characteristic); 755 UNUSED(att_status); 756 break; 757 758 case HIDS_CLIENT_STATE_W2_READ_REPORT_ID_AND_TYPE: 759 client->state = HIDS_CLIENT_STATE_W4_REPORT_ID_AND_TYPE; 760 761 // result in GATT_EVENT_CHARACTERISTIC_DESCRIPTOR_QUERY_RESULT 762 att_status = gatt_client_read_characteristic_descriptor_using_descriptor_handle(&handle_gatt_client_event, client->con_handle, client->handle); 763 client->handle = 0; 764 UNUSED(att_status); 765 break; 766 767 case HIDS_CLIENT_STATE_W2_CONFIGURE_NOTIFICATIONS: 768 #ifdef ENABLE_TESTING_SUPPORT 769 if (client->value > 0){ 770 printf(" Notification configuration enable "); 771 } else { 772 printf(" Notification configuration disable "); 773 } 774 printf("[%d, %d, 0x%04X]:\n", 775 client->report_index, 776 client->reports[client->report_index].service_index, client->reports[client->report_index].value_handle); 777 #endif 778 779 client->state = HIDS_CLIENT_STATE_W4_NOTIFICATIONS_CONFIGURED; 780 781 characteristic.value_handle = client->reports[client->report_index].value_handle; 782 characteristic.end_handle = client->reports[client->report_index].end_handle; 783 characteristic.properties = client->reports[client->report_index].properties; 784 785 // end of write marked in GATT_EVENT_QUERY_COMPLETE 786 787 att_status = gatt_client_write_client_characteristic_configuration(&handle_gatt_client_event, client->con_handle, &characteristic, client->value); 788 789 if (att_status == ERROR_CODE_SUCCESS){ 790 switch(client->value){ 791 case GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NOTIFICATION: 792 gatt_client_listen_for_characteristic_value_updates( 793 &client->reports[client->report_index].notification_listener, 794 &handle_notification_event, client->con_handle, &characteristic); 795 break; 796 default: 797 gatt_client_stop_listening_for_characteristic_value_updates(&client->reports[client->report_index].notification_listener); 798 break; 799 } 800 } else { 801 if (hids_client_report_next_notifications_configuration_report_index(client)){ 802 hids_run_for_client(client); 803 break; 804 } 805 client->state = HIDS_CLIENT_STATE_CONNECTED; 806 } 807 break; 808 809 case HIDS_CLIENT_STATE_W2_ENABLE_INPUT_REPORTS: 810 #ifdef ENABLE_TESTING_SUPPORT 811 printf(" Notification enable [%d, %d, 0x%04X]:\n", 812 client->report_index, 813 client->reports[client->report_index].service_index, client->reports[client->report_index].value_handle); 814 #endif 815 client->state = HIDS_CLIENT_STATE_W4_INPUT_REPORTS_ENABLED; 816 817 characteristic.value_handle = client->reports[client->report_index].value_handle; 818 characteristic.end_handle = client->reports[client->report_index].end_handle; 819 characteristic.properties = client->reports[client->report_index].properties; 820 821 // end of write marked in GATT_EVENT_QUERY_COMPLETE 822 att_status = gatt_client_write_client_characteristic_configuration(&handle_gatt_client_event, client->con_handle, &characteristic, GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NOTIFICATION); 823 824 if (att_status == ERROR_CODE_SUCCESS){ 825 gatt_client_listen_for_characteristic_value_updates( 826 &client->reports[client->report_index].notification_listener, 827 &handle_notification_event, client->con_handle, &characteristic); 828 } else { 829 if (hids_client_report_next_notification_report_index(client)){ 830 hids_run_for_client(client); 831 break; 832 } 833 client->state = HIDS_CLIENT_STATE_CONNECTED; 834 hids_emit_connection_established(client, ERROR_CODE_SUCCESS); 835 } 836 break; 837 838 839 case HIDS_CLIENT_W2_SEND_WRITE_REPORT: 840 #ifdef ENABLE_TESTING_SUPPORT 841 printf(" Write report [%d, %d, 0x%04X]:\n", 842 client->report_index, 843 client->reports[client->report_index].service_index, client->reports[client->report_index].value_handle); 844 #endif 845 846 client->state = HIDS_CLIENT_W4_WRITE_REPORT_DONE; 847 848 // see GATT_EVENT_QUERY_COMPLETE for end of write 849 att_status = gatt_client_write_value_of_characteristic( 850 &handle_gatt_client_event, client->con_handle, 851 client->reports[client->report_index].value_handle, 852 client->report_len, (uint8_t *)client->report); 853 UNUSED(att_status); 854 break; 855 856 case HIDS_CLIENT_W2_SEND_GET_REPORT: 857 #ifdef ENABLE_TESTING_SUPPORT 858 printf(" Get report [index %d, ID %d, Service %d, handle 0x%04X]:\n", 859 client->report_index, 860 client->reports[client->report_index].report_id, 861 client->reports[client->report_index].service_index, client->reports[client->report_index].value_handle); 862 #endif 863 864 client->state = HIDS_CLIENT_W4_GET_REPORT_RESULT; 865 // result in GATT_EVENT_CHARACTERISTIC_VALUE_QUERY_RESULT 866 att_status = gatt_client_read_value_of_characteristic_using_value_handle( 867 &handle_report_event, 868 client->con_handle, 869 client->reports[client->report_index].value_handle); 870 UNUSED(att_status); 871 break; 872 873 #ifdef ENABLE_TESTING_SUPPORT 874 case HIDS_CLIENT_W2_READ_CHARACTERISTIC_CONFIGURATION: 875 client->state = HIDS_CLIENT_W4_CHARACTERISTIC_CONFIGURATION_RESULT; 876 877 // result in GATT_EVENT_CHARACTERISTIC_VALUE_QUERY_RESULT 878 att_status = gatt_client_read_value_of_characteristic_using_value_handle( 879 &handle_gatt_client_event, 880 client->con_handle, 881 client->reports[client->report_index].ccc_handle); 882 883 break; 884 #endif 885 case HIDS_CLIENT_W2_READ_VALUE_OF_CHARACTERISTIC: 886 client->state = HIDS_CLIENT_W4_VALUE_OF_CHARACTERISTIC_RESULT; 887 888 // result in GATT_EVENT_CHARACTERISTIC_VALUE_QUERY_RESULT 889 att_status = gatt_client_read_value_of_characteristic_using_value_handle( 890 &handle_gatt_client_event, 891 client->con_handle, 892 client->handle); 893 break; 894 895 case HIDS_CLIENT_STATE_W2_SET_PROTOCOL_MODE_WITHOUT_RESPONSE: 896 case HIDS_CLIENT_W2_WRITE_VALUE_OF_CHARACTERISTIC_WITHOUT_RESPONSE: 897 client->write_without_response_request.callback = &hids_client_handle_can_write_without_reponse; 898 client->write_without_response_request.context = client; 899 (void) gatt_client_request_to_write_without_response(&client->write_without_response_request, client->con_handle); 900 break; 901 902 default: 903 break; 904 } 905 } 906 907 static void hids_client_handle_can_write_without_reponse(void * context) { 908 hids_client_t *client = (hids_client_t *) context; 909 uint8_t att_status; 910 switch (client->state){ 911 case HIDS_CLIENT_STATE_W2_SET_PROTOCOL_MODE_WITHOUT_RESPONSE: 912 att_status = gatt_client_write_value_of_characteristic_without_response( 913 client->con_handle, 914 client->services[client->service_index].protocol_mode_value_handle, 1, (uint8_t *)&client->required_protocol_mode); 915 916 #ifdef ENABLE_TESTING_SUPPORT 917 printf("\n\nSet report mode %d of service %d, status 0x%02x", client->required_protocol_mode, client->service_index, att_status); 918 #endif 919 920 if (att_status == ATT_ERROR_SUCCESS){ 921 client->services[client->service_index].protocol_mode = client->required_protocol_mode; 922 if ((client->service_index + 1) < client->num_instances){ 923 client->service_index++; 924 hids_run_for_client(client); 925 break; 926 } 927 } 928 929 // read UUIDS for external characteristics 930 if (hids_client_report_map_uuid_query_init(client)){ 931 hids_run_for_client(client); 932 break; 933 } 934 935 // discover characteristic descriptor for all Report characteristics, 936 // then read value of characteristic descriptor to get Report ID 937 if (hids_client_report_query_init(client)){ 938 hids_run_for_client(client); 939 break; 940 } 941 942 client->state = HIDS_CLIENT_STATE_CONNECTED; 943 hids_emit_connection_established(client, ERROR_CODE_SUCCESS); 944 break; 945 946 case HIDS_CLIENT_W2_WRITE_VALUE_OF_CHARACTERISTIC_WITHOUT_RESPONSE: 947 #ifdef ENABLE_TESTING_SUPPORT 948 printf(" Write characteristic [service %d, handle 0x%04X]:\n", client->service_index, client->handle); 949 #endif 950 client->state = HIDS_CLIENT_STATE_CONNECTED; 951 (void) gatt_client_write_value_of_characteristic_without_response(client->con_handle, client->handle, 1, (uint8_t *) &client->value); 952 break; 953 954 default: 955 break; 956 } 957 } 958 959 static void handle_gatt_client_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 960 UNUSED(packet_type); 961 UNUSED(channel); 962 UNUSED(size); 963 964 hids_client_t * client = NULL; 965 uint8_t status; 966 gatt_client_service_t service; 967 gatt_client_characteristic_t characteristic; 968 gatt_client_characteristic_descriptor_t characteristic_descriptor; 969 970 // hids_client_report_t * boot_keyboard_report; 971 // hids_client_report_t * boot_mouse_report; 972 const uint8_t * characteristic_descriptor_value; 973 uint8_t i; 974 uint8_t report_index; 975 976 const uint8_t * value; 977 uint16_t value_len; 978 979 switch(hci_event_packet_get_type(packet)){ 980 case GATT_EVENT_SERVICE_QUERY_RESULT: 981 client = hids_get_client_for_con_handle(gatt_event_service_query_result_get_handle(packet)); 982 if (client == NULL) break; 983 984 if (client->num_instances < MAX_NUM_HID_SERVICES){ 985 uint8_t index = client->num_instances; 986 gatt_event_service_query_result_get_service(packet, &service); 987 client->services[index].start_handle = service.start_group_handle; 988 client->services[index].end_handle = service.end_group_handle; 989 client->num_instances++; 990 991 #ifdef ENABLE_TESTING_SUPPORT 992 printf("HID Service: start handle 0x%04X, end handle 0x%04X\n", client->services[index].start_handle, client->services[index].end_handle); 993 #endif 994 hids_client_descriptor_storage_init(client, index); 995 } else { 996 log_info("%d hid services found, only first %d can be stored, increase MAX_NUM_HID_SERVICES", client->num_instances + 1, MAX_NUM_HID_SERVICES); 997 } 998 break; 999 1000 case GATT_EVENT_CHARACTERISTIC_QUERY_RESULT: 1001 client = hids_get_client_for_con_handle(gatt_event_characteristic_query_result_get_handle(packet)); 1002 if (client == NULL) break; 1003 1004 gatt_event_characteristic_query_result_get_characteristic(packet, &characteristic); 1005 1006 report_index = HIDS_CLIENT_INVALID_REPORT_INDEX; 1007 if (client->state == HIDS_CLIENT_STATE_W4_EXTERNAL_REPORT_CHARACTERISTIC_RESULT){ 1008 if (!external_report_index_for_uuid_exists(client, characteristic.uuid16)){ 1009 break; 1010 } 1011 } 1012 1013 switch (characteristic.uuid16){ 1014 case ORG_BLUETOOTH_CHARACTERISTIC_PROTOCOL_MODE: 1015 client->services[client->service_index].protocol_mode_value_handle = characteristic.value_handle; 1016 break; 1017 1018 case ORG_BLUETOOTH_CHARACTERISTIC_BOOT_KEYBOARD_INPUT_REPORT: 1019 report_index = hids_client_add_characteristic(client, &characteristic, HID_BOOT_MODE_KEYBOARD_ID, HID_REPORT_TYPE_INPUT, true); 1020 break; 1021 1022 case ORG_BLUETOOTH_CHARACTERISTIC_BOOT_MOUSE_INPUT_REPORT: 1023 report_index = hids_client_add_characteristic(client, &characteristic, HID_BOOT_MODE_MOUSE_ID, HID_REPORT_TYPE_INPUT, true); 1024 break; 1025 1026 case ORG_BLUETOOTH_CHARACTERISTIC_BOOT_KEYBOARD_OUTPUT_REPORT: 1027 report_index = hids_client_add_characteristic(client, &characteristic, HID_BOOT_MODE_KEYBOARD_ID, HID_REPORT_TYPE_OUTPUT, true); 1028 break; 1029 1030 case ORG_BLUETOOTH_CHARACTERISTIC_REPORT: 1031 report_index = hids_client_add_characteristic(client, &characteristic, HID_REPORT_MODE_REPORT_ID, HID_REPORT_TYPE_RESERVED, false); 1032 break; 1033 1034 case ORG_BLUETOOTH_CHARACTERISTIC_REPORT_MAP: 1035 client->services[client->service_index].report_map_value_handle = characteristic.value_handle; 1036 client->services[client->service_index].report_map_end_handle = characteristic.end_handle; 1037 break; 1038 1039 case ORG_BLUETOOTH_CHARACTERISTIC_HID_INFORMATION: 1040 client->services[client->service_index].hid_information_value_handle = characteristic.value_handle; 1041 break; 1042 1043 case ORG_BLUETOOTH_CHARACTERISTIC_HID_CONTROL_POINT: 1044 client->services[client->service_index].control_point_value_handle = characteristic.value_handle; 1045 break; 1046 1047 default: 1048 #ifdef ENABLE_TESTING_SUPPORT 1049 printf(" TODO: Found external characteristic 0x%04X\n", characteristic.uuid16); 1050 #endif 1051 return; 1052 } 1053 1054 #ifdef ENABLE_TESTING_SUPPORT 1055 printf("HID Characteristic %s: \n Attribute Handle 0x%04X, Properties 0x%02X, Handle 0x%04X, UUID 0x%04X, service %d", 1056 hid_characteristic_name(characteristic.uuid16), 1057 characteristic.start_handle, 1058 characteristic.properties, 1059 characteristic.value_handle, characteristic.uuid16, 1060 client->service_index); 1061 1062 if (report_index != HIDS_CLIENT_INVALID_REPORT_INDEX){ 1063 printf(", report index 0x%02X", report_index); 1064 } 1065 printf("\n"); 1066 #endif 1067 break; 1068 1069 case GATT_EVENT_LONG_CHARACTERISTIC_VALUE_QUERY_RESULT: 1070 // Map Report characteristic value == HID Descriptor 1071 client = hids_get_client_for_con_handle(gatt_event_long_characteristic_value_query_result_get_handle(packet)); 1072 if (client == NULL) break; 1073 1074 value = gatt_event_long_characteristic_value_query_result_get_value(packet); 1075 value_len = gatt_event_long_characteristic_value_query_result_get_value_length(packet); 1076 1077 #ifdef ENABLE_TESTING_SUPPORT 1078 // printf("Report Map HID Desc [%d] for service %d\n", descriptor_len, client->service_index); 1079 printf_hexdump(value, value_len); 1080 #endif 1081 for (i = 0; i < value_len; i++){ 1082 bool stored = hids_client_descriptor_storage_store(client, client->service_index, value[i]); 1083 if (!stored){ 1084 client->services[client->service_index].hid_descriptor_status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 1085 break; 1086 } 1087 } 1088 break; 1089 1090 case GATT_EVENT_ALL_CHARACTERISTIC_DESCRIPTORS_QUERY_RESULT: 1091 client = hids_get_client_for_con_handle(gatt_event_all_characteristic_descriptors_query_result_get_handle(packet)); 1092 if (client == NULL) break; 1093 1094 gatt_event_all_characteristic_descriptors_query_result_get_characteristic_descriptor(packet, &characteristic_descriptor); 1095 1096 switch (client->state) { 1097 case HIDS_CLIENT_STATE_W4_REPORT_MAP_CHARACTERISTIC_DESCRIPTORS_RESULT: 1098 // setup for descriptor value query 1099 if (characteristic_descriptor.uuid16 == ORG_BLUETOOTH_DESCRIPTOR_EXTERNAL_REPORT_REFERENCE){ 1100 report_index = hids_client_add_external_report(client, &characteristic_descriptor); 1101 1102 #ifdef ENABLE_TESTING_SUPPORT 1103 if (report_index != HIDS_CLIENT_INVALID_REPORT_INDEX){ 1104 printf(" External Report Reference Characteristic Descriptor: Handle 0x%04X, UUID 0x%04X, service %d, report index 0x%02X\n", 1105 characteristic_descriptor.handle, 1106 characteristic_descriptor.uuid16, 1107 client->service_index, report_index); 1108 } 1109 #endif 1110 } 1111 break; 1112 case HIDS_CLIENT_STATE_W4_REPORT_FOUND: 1113 // setup for descriptor value query 1114 if (characteristic_descriptor.uuid16 == ORG_BLUETOOTH_DESCRIPTOR_REPORT_REFERENCE){ 1115 client->handle = characteristic_descriptor.handle; 1116 #ifdef ENABLE_TESTING_SUPPORT 1117 printf(" Report Characteristic Report Reference Characteristic Descriptor: Handle 0x%04X, UUID 0x%04X\n", 1118 characteristic_descriptor.handle, 1119 characteristic_descriptor.uuid16); 1120 #endif 1121 } 1122 1123 #ifdef ENABLE_TESTING_SUPPORT 1124 if (characteristic_descriptor.uuid16 == ORG_BLUETOOTH_DESCRIPTOR_GATT_CLIENT_CHARACTERISTIC_CONFIGURATION){ 1125 client->reports[client->report_index].ccc_handle = characteristic_descriptor.handle; 1126 printf(" Report Client Characteristic Configuration Descriptor: Handle 0x%04X, UUID 0x%04X\n", 1127 characteristic_descriptor.handle, 1128 characteristic_descriptor.uuid16); 1129 } 1130 #endif 1131 break; 1132 1133 default: 1134 break; 1135 } 1136 break; 1137 1138 case GATT_EVENT_CHARACTERISTIC_VALUE_QUERY_RESULT: 1139 client = hids_get_client_for_con_handle(gatt_event_characteristic_value_query_result_get_handle(packet)); 1140 if (client == NULL) break; 1141 1142 value = gatt_event_characteristic_value_query_result_get_value(packet); 1143 value_len = gatt_event_characteristic_value_query_result_get_value_length(packet); 1144 1145 1146 switch (client->state){ 1147 #ifdef ENABLE_TESTING_SUPPORT 1148 case HIDS_CLIENT_W4_CHARACTERISTIC_CONFIGURATION_RESULT: 1149 printf(" Received CCC value: "); 1150 printf_hexdump(value, value_len); 1151 break; 1152 #endif 1153 case HIDS_CLIENT_W4_VALUE_OF_CHARACTERISTIC_RESULT:{ 1154 uint16_t value_handle = gatt_event_characteristic_value_query_result_get_value_handle(packet); 1155 if (value_handle == client->services[client->service_index].hid_information_value_handle){ 1156 hids_client_emit_hid_information_event(client, value, value_len); 1157 break; 1158 } 1159 if (value_handle == client->services[client->service_index].protocol_mode_value_handle){ 1160 hids_client_emit_protocol_mode_event(client, value, value_len); 1161 break; 1162 } 1163 break; 1164 } 1165 default: 1166 break; 1167 } 1168 1169 break; 1170 1171 case GATT_EVENT_CHARACTERISTIC_DESCRIPTOR_QUERY_RESULT: 1172 client = hids_get_client_for_con_handle(gatt_event_characteristic_descriptor_query_result_get_handle(packet)); 1173 if (client == NULL) break; 1174 1175 if (gatt_event_characteristic_descriptor_query_result_get_descriptor_length(packet) != 2){ 1176 break; 1177 } 1178 1179 characteristic_descriptor_value = gatt_event_characteristic_descriptor_query_result_get_descriptor(packet); 1180 switch (client->state) { 1181 case HIDS_CLIENT_STATE_W4_REPORT_MAP_EXTERNAL_REPORT_REFERENCE_UUID: 1182 // get external report characteristic uuid 1183 report_index = find_external_report_index_for_value_handle(client, gatt_event_characteristic_descriptor_query_result_get_descriptor_handle(packet)); 1184 if (report_index != HIDS_CLIENT_INVALID_REPORT_INDEX){ 1185 client->external_reports[report_index].external_report_reference_uuid = little_endian_read_16(characteristic_descriptor_value, 0); 1186 #ifdef ENABLE_TESTING_SUPPORT 1187 printf(" Update external_report_reference_uuid of report index 0x%02X, service index 0x%02X, UUID 0x%02X\n", 1188 report_index, client->service_index, client->external_reports[report_index].external_report_reference_uuid); 1189 #endif 1190 } 1191 break; 1192 1193 case HIDS_CLIENT_STATE_W4_REPORT_ID_AND_TYPE: 1194 1195 if (client->report_index != HIDS_CLIENT_INVALID_REPORT_INDEX){ 1196 client->reports[client->report_index].report_id = characteristic_descriptor_value[0]; 1197 client->reports[client->report_index].report_type = (hid_report_type_t)characteristic_descriptor_value[1]; 1198 #ifdef ENABLE_TESTING_SUPPORT 1199 printf(" Update report ID and type [%d, %d] of report index 0x%02X, service index 0x%02X\n", 1200 client->reports[client->report_index].report_id, 1201 client->reports[client->report_index].report_type, 1202 client->report_index, client->service_index); 1203 #endif 1204 } 1205 break; 1206 1207 default: 1208 break; 1209 } 1210 break; 1211 1212 case GATT_EVENT_QUERY_COMPLETE: 1213 client = hids_get_client_for_con_handle(gatt_event_query_complete_get_handle(packet)); 1214 if (client == NULL) break; 1215 1216 status = gatt_service_client_att_status_to_error_code(gatt_event_query_complete_get_att_status(packet)); 1217 1218 switch (client->state){ 1219 case HIDS_CLIENT_STATE_W4_SERVICE_RESULT: 1220 if (status != ERROR_CODE_SUCCESS){ 1221 hids_emit_connection_established(client, status); 1222 hids_finalize_client(client); 1223 return; 1224 } 1225 1226 if (client->num_instances == 0){ 1227 hids_emit_connection_established(client, ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE); 1228 hids_finalize_client(client); 1229 return; 1230 } 1231 1232 client->service_index = 0; 1233 client->state = HIDS_CLIENT_STATE_W2_QUERY_CHARACTERISTIC; 1234 break; 1235 1236 case HIDS_CLIENT_STATE_W4_CHARACTERISTIC_RESULT: 1237 if (status != ERROR_CODE_SUCCESS){ 1238 hids_emit_connection_established(client, status); 1239 hids_finalize_client(client); 1240 return; 1241 } 1242 1243 if ((client->service_index + 1) < client->num_instances){ 1244 // discover characteristics of next service 1245 client->service_index++; 1246 client->state = HIDS_CLIENT_STATE_W2_QUERY_CHARACTERISTIC; 1247 break; 1248 } 1249 1250 btstack_assert(client->required_protocol_mode != HID_PROTOCOL_MODE_REPORT_WITH_FALLBACK_TO_BOOT); 1251 1252 switch (client->required_protocol_mode){ 1253 case HID_PROTOCOL_MODE_REPORT: 1254 for (i = 0; i < client->num_instances; i++){ 1255 client->services[i].protocol_mode = HID_PROTOCOL_MODE_REPORT; 1256 } 1257 // 1. we need to get HID Descriptor and 1258 // 2. get external Report characteristics if referenced from Report Map 1259 if (hids_client_report_map_query_init(client)){ 1260 break; 1261 } 1262 hids_emit_connection_established(client, ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE); 1263 hids_finalize_client(client); 1264 return; 1265 1266 default: 1267 // set boot mode 1268 client->service_index = 0; 1269 client->state = HIDS_CLIENT_STATE_W2_SET_PROTOCOL_MODE_WITHOUT_RESPONSE; 1270 break; 1271 } 1272 break; 1273 1274 1275 // HID descriptor found 1276 case HIDS_CLIENT_STATE_W4_REPORT_MAP_HID_DESCRIPTOR: 1277 if (status != ERROR_CODE_SUCCESS){ 1278 hids_emit_connection_established(client, status); 1279 hids_finalize_client(client); 1280 return; 1281 } 1282 client->state = HIDS_CLIENT_STATE_W2_REPORT_MAP_DISCOVER_CHARACTERISTIC_DESCRIPTORS; 1283 break; 1284 1285 // found all descriptors, check if there is one with EXTERNAL_REPORT_REFERENCE 1286 case HIDS_CLIENT_STATE_W4_REPORT_MAP_CHARACTERISTIC_DESCRIPTORS_RESULT: 1287 // go for next report map 1288 if (hids_client_report_query_next_report_map(client)){ 1289 break; 1290 } 1291 1292 // read UUIDS for external characteristics 1293 if (hids_client_report_map_uuid_query_init(client)){ 1294 break; 1295 } 1296 1297 // discover characteristic descriptor for all Report characteristics, 1298 // then read value of characteristic descriptor to get Report ID 1299 if (hids_client_report_query_init(client)){ 1300 break; 1301 } 1302 1303 hids_emit_connection_established(client, ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE); 1304 hids_finalize_client(client); 1305 return; 1306 1307 case HIDS_CLIENT_STATE_W4_REPORT_MAP_EXTERNAL_REPORT_REFERENCE_UUID: 1308 // go for next map report 1309 if (hids_client_report_query_next_report_map_uuid(client)){ 1310 break; 1311 } 1312 1313 // update external characteristics with correct value handle and end handle 1314 client->state = HIDS_CLIENT_STATE_W2_DISCOVER_EXTERNAL_REPORT_CHARACTERISTIC; 1315 break; 1316 1317 case HIDS_CLIENT_STATE_W4_EXTERNAL_REPORT_CHARACTERISTIC_RESULT: 1318 // discover characteristic descriptor for all Report characteristics, 1319 // then read value of characteristic descriptor to get Report ID 1320 if (hids_client_report_query_init(client)){ 1321 break; 1322 } 1323 1324 hids_emit_connection_established(client, ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE); 1325 hids_finalize_client(client); 1326 return; 1327 1328 case HIDS_CLIENT_STATE_W4_REPORT_FOUND: 1329 if (client->handle != 0){ 1330 client->state = HIDS_CLIENT_STATE_W2_READ_REPORT_ID_AND_TYPE; 1331 break; 1332 } 1333 // go for next report 1334 if (hids_client_report_query_next_report(client)){ 1335 break; 1336 } 1337 client->state = HIDS_CLIENT_STATE_CONNECTED; 1338 hids_emit_connection_established(client, ERROR_CODE_SUCCESS); 1339 break; 1340 1341 case HIDS_CLIENT_STATE_W4_REPORT_ID_AND_TYPE: 1342 // go for next report 1343 if (hids_client_report_query_next_report(client)){ 1344 break; 1345 } 1346 if (hids_client_report_notifications_init(client)){ 1347 break; 1348 } 1349 client->state = HIDS_CLIENT_STATE_CONNECTED; 1350 hids_emit_connection_established(client, ERROR_CODE_SUCCESS); 1351 break; 1352 1353 case HIDS_CLIENT_STATE_W4_INPUT_REPORTS_ENABLED: 1354 if (hids_client_report_next_notification_report_index(client)){ 1355 break; 1356 } 1357 client->state = HIDS_CLIENT_STATE_CONNECTED; 1358 hids_emit_connection_established(client, ERROR_CODE_SUCCESS); 1359 break; 1360 1361 case HIDS_CLIENT_STATE_W4_NOTIFICATIONS_CONFIGURED: 1362 if (hids_client_report_next_notifications_configuration_report_index(client)){ 1363 break; 1364 } 1365 hids_emit_notifications_configuration(client); 1366 client->state = HIDS_CLIENT_STATE_CONNECTED; 1367 break; 1368 1369 #ifdef ENABLE_TESTING_SUPPORT 1370 case HIDS_CLIENT_W4_CHARACTERISTIC_CONFIGURATION_RESULT: 1371 client->state = HIDS_CLIENT_W2_SEND_GET_REPORT; 1372 break; 1373 #endif 1374 1375 case HIDS_CLIENT_W4_VALUE_OF_CHARACTERISTIC_RESULT: 1376 client->state = HIDS_CLIENT_STATE_CONNECTED; 1377 break; 1378 1379 case HIDS_CLIENT_W4_WRITE_REPORT_DONE: 1380 { 1381 client->state = HIDS_CLIENT_STATE_CONNECTED; 1382 1383 // emit empty report to signal done 1384 uint8_t event[9]; 1385 hids_client_setup_report_event(GATTSERVICE_SUBEVENT_HID_REPORT_WRITTEN, client, 1386 client->report_index, event, 0); 1387 (*client->client_handler)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 1388 } 1389 break; 1390 1391 default: 1392 break; 1393 } 1394 break; 1395 1396 default: 1397 break; 1398 } 1399 1400 if (client != NULL){ 1401 hids_run_for_client(client); 1402 } 1403 } 1404 1405 static void handle_hci_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1406 UNUSED(packet_type); // ok: only hci events 1407 UNUSED(channel); // ok: there is no channel 1408 UNUSED(size); // ok: fixed format events read from HCI buffer 1409 1410 hci_con_handle_t con_handle; 1411 hids_client_t * client; 1412 1413 switch (hci_event_packet_get_type(packet)) { 1414 case HCI_EVENT_DISCONNECTION_COMPLETE: 1415 con_handle = hci_event_disconnection_complete_get_connection_handle(packet); 1416 client = hids_get_client_for_con_handle(con_handle); 1417 if (client != NULL){ 1418 // emit disconnected 1419 btstack_packet_handler_t packet_handler = client->client_handler; 1420 uint16_t cid = client->cid; 1421 hids_emit_disconnected(packet_handler, cid); 1422 // finalize 1423 hids_finalize_client(client); 1424 } 1425 break; 1426 default: 1427 break; 1428 } 1429 } 1430 1431 uint8_t hids_client_connect(hci_con_handle_t con_handle, btstack_packet_handler_t packet_handler, hid_protocol_mode_t protocol_mode, uint16_t * hids_cid){ 1432 btstack_assert(packet_handler != NULL); 1433 1434 hids_client_t * client = hids_get_client_for_con_handle(con_handle); 1435 if (client != NULL){ 1436 return ERROR_CODE_COMMAND_DISALLOWED; 1437 } 1438 1439 uint16_t cid = hids_get_next_cid(); 1440 if (hids_cid != NULL) { 1441 *hids_cid = cid; 1442 } 1443 1444 client = hids_create_client(con_handle, cid); 1445 if (client == NULL) { 1446 return BTSTACK_MEMORY_ALLOC_FAILED; 1447 } 1448 1449 client->required_protocol_mode = protocol_mode; 1450 client->client_handler = packet_handler; 1451 client->state = HIDS_CLIENT_STATE_W2_QUERY_SERVICE; 1452 1453 hids_run_for_client(client); 1454 return ERROR_CODE_SUCCESS; 1455 } 1456 1457 uint8_t hids_client_disconnect(uint16_t hids_cid){ 1458 hids_client_t * client = hids_get_client_for_cid(hids_cid); 1459 if (client == NULL){ 1460 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1461 } 1462 // finalize connection 1463 hids_finalize_client(client); 1464 return ERROR_CODE_SUCCESS; 1465 } 1466 1467 uint8_t hids_client_send_write_report(uint16_t hids_cid, uint8_t report_id, hid_report_type_t report_type, const uint8_t * report, uint8_t report_len){ 1468 hids_client_t * client = hids_get_client_for_cid(hids_cid); 1469 if (client == NULL){ 1470 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1471 } 1472 1473 if (client->state != HIDS_CLIENT_STATE_CONNECTED) { 1474 return ERROR_CODE_COMMAND_DISALLOWED; 1475 } 1476 1477 uint8_t report_index = find_report_index_for_report_id_and_report_type(client, report_id, report_type); 1478 1479 if (report_index == HIDS_CLIENT_INVALID_REPORT_INDEX){ 1480 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1481 } 1482 1483 uint16_t mtu; 1484 uint8_t status = gatt_client_get_mtu(client->con_handle, &mtu); 1485 1486 if (status != ERROR_CODE_SUCCESS){ 1487 return status; 1488 } 1489 1490 if (mtu - 2 < report_len){ 1491 return ERROR_CODE_PARAMETER_OUT_OF_MANDATORY_RANGE; 1492 } 1493 1494 client->state = HIDS_CLIENT_W2_SEND_WRITE_REPORT; 1495 client->report_index = report_index; 1496 client->report = report; 1497 client->report_len = report_len; 1498 1499 hids_run_for_client(client); 1500 return ERROR_CODE_SUCCESS; 1501 } 1502 1503 uint8_t hids_client_send_get_report(uint16_t hids_cid, uint8_t report_id, hid_report_type_t report_type){ 1504 hids_client_t * client = hids_get_client_for_cid(hids_cid); 1505 if (client == NULL){ 1506 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1507 } 1508 1509 if (client->state != HIDS_CLIENT_STATE_CONNECTED) { 1510 return ERROR_CODE_COMMAND_DISALLOWED; 1511 } 1512 1513 uint8_t report_index = find_report_index_for_report_id_and_report_type(client, report_id, report_type); 1514 if (report_index == HIDS_CLIENT_INVALID_REPORT_INDEX){ 1515 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1516 } 1517 1518 client->report_index = report_index; 1519 1520 #ifdef ENABLE_TESTING_SUPPORT 1521 client->state = HIDS_CLIENT_W2_READ_CHARACTERISTIC_CONFIGURATION; 1522 #else 1523 client->state = HIDS_CLIENT_W2_SEND_GET_REPORT; 1524 #endif 1525 hids_run_for_client(client); 1526 return ERROR_CODE_SUCCESS; 1527 } 1528 1529 1530 uint8_t hids_client_get_hid_information(uint16_t hids_cid, uint8_t service_index){ 1531 hids_client_t * client = hids_get_client_for_cid(hids_cid); 1532 if (client == NULL){ 1533 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1534 } 1535 1536 if (client->state != HIDS_CLIENT_STATE_CONNECTED) { 1537 return ERROR_CODE_COMMAND_DISALLOWED; 1538 } 1539 1540 if (service_index >= client->num_instances){ 1541 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1542 } 1543 1544 client->service_index = service_index; 1545 client->handle = client->services[client->service_index].hid_information_value_handle; 1546 1547 client->state = HIDS_CLIENT_W2_READ_VALUE_OF_CHARACTERISTIC; 1548 hids_run_for_client(client); 1549 return ERROR_CODE_SUCCESS; 1550 } 1551 1552 uint8_t hids_client_get_protocol_mode(uint16_t hids_cid, uint8_t service_index){ 1553 hids_client_t * client = hids_get_client_for_cid(hids_cid); 1554 if (client == NULL){ 1555 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1556 } 1557 1558 if (client->state != HIDS_CLIENT_STATE_CONNECTED) { 1559 return ERROR_CODE_COMMAND_DISALLOWED; 1560 } 1561 1562 if (service_index >= client->num_instances){ 1563 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1564 } 1565 1566 client->service_index = service_index; 1567 client->handle = client->services[client->service_index].protocol_mode_value_handle; 1568 1569 client->state = HIDS_CLIENT_W2_READ_VALUE_OF_CHARACTERISTIC; 1570 hids_run_for_client(client); 1571 return ERROR_CODE_SUCCESS; 1572 } 1573 1574 uint8_t hids_client_send_set_protocol_mode(uint16_t hids_cid, uint8_t service_index, hid_protocol_mode_t protocol_mode){ 1575 hids_client_t * client = hids_get_client_for_cid(hids_cid); 1576 if (client == NULL){ 1577 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1578 } 1579 1580 if (client->state != HIDS_CLIENT_STATE_CONNECTED) { 1581 return ERROR_CODE_COMMAND_DISALLOWED; 1582 } 1583 1584 if (service_index >= client->num_instances){ 1585 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1586 } 1587 1588 client->service_index = service_index; 1589 client->handle = client->services[client->service_index].protocol_mode_value_handle; 1590 client->value = (uint8_t)protocol_mode; 1591 1592 client->state = HIDS_CLIENT_W2_WRITE_VALUE_OF_CHARACTERISTIC_WITHOUT_RESPONSE; 1593 hids_run_for_client(client); 1594 return ERROR_CODE_SUCCESS; 1595 } 1596 1597 1598 static uint8_t hids_client_send_control_point_cmd(uint16_t hids_cid, uint8_t service_index, uint8_t value){ 1599 hids_client_t * client = hids_get_client_for_cid(hids_cid); 1600 if (client == NULL){ 1601 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1602 } 1603 1604 if (client->state != HIDS_CLIENT_STATE_CONNECTED) { 1605 return ERROR_CODE_COMMAND_DISALLOWED; 1606 } 1607 1608 if (service_index >= client->num_instances){ 1609 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1610 } 1611 1612 client->service_index = service_index; 1613 client->handle = client->services[client->service_index].control_point_value_handle; 1614 client->value = value; 1615 1616 client->state = HIDS_CLIENT_W2_WRITE_VALUE_OF_CHARACTERISTIC_WITHOUT_RESPONSE; 1617 hids_run_for_client(client); 1618 return ERROR_CODE_SUCCESS; 1619 } 1620 1621 uint8_t hids_client_send_suspend(uint16_t hids_cid, uint8_t service_index){ 1622 return hids_client_send_control_point_cmd(hids_cid, service_index, 0); 1623 } 1624 1625 uint8_t hids_client_send_exit_suspend(uint16_t hids_cid, uint8_t service_index){ 1626 return hids_client_send_control_point_cmd(hids_cid, service_index, 1); 1627 } 1628 1629 uint8_t hids_client_enable_notifications(uint16_t hids_cid){ 1630 hids_client_t * client = hids_get_client_for_cid(hids_cid); 1631 if (client == NULL){ 1632 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1633 } 1634 1635 if (client->state != HIDS_CLIENT_STATE_CONNECTED) { 1636 return ERROR_CODE_COMMAND_DISALLOWED; 1637 } 1638 client->value = GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NOTIFICATION; 1639 if (hids_client_notifications_configuration_init(client)){ 1640 hids_run_for_client(client); 1641 return ERROR_CODE_SUCCESS; 1642 } 1643 hids_emit_notifications_configuration(client); 1644 return ERROR_CODE_SUCCESS; 1645 } 1646 1647 uint8_t hids_client_disable_notifications(uint16_t hids_cid){ 1648 hids_client_t * client = hids_get_client_for_cid(hids_cid); 1649 if (client == NULL){ 1650 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1651 } 1652 1653 if (client->state != HIDS_CLIENT_STATE_CONNECTED) { 1654 return ERROR_CODE_COMMAND_DISALLOWED; 1655 } 1656 1657 client->value = GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NONE; 1658 if (hids_client_notifications_configuration_init(client)){ 1659 hids_run_for_client(client); 1660 return ERROR_CODE_SUCCESS; 1661 } 1662 hids_emit_notifications_configuration(client); 1663 return ERROR_CODE_SUCCESS; 1664 } 1665 1666 void hids_client_init(uint8_t * hid_descriptor_storage, uint16_t hid_descriptor_storage_len){ 1667 hids_client_descriptor_storage = hid_descriptor_storage; 1668 hids_client_descriptor_storage_len = hid_descriptor_storage_len; 1669 1670 hci_event_callback_registration.callback = &handle_hci_event; 1671 hci_add_event_handler(&hci_event_callback_registration); 1672 } 1673 1674 void hids_client_deinit(void){} 1675