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 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_device.c" 39 40 /** 41 * Implementation of the GATT HIDS Device 42 * To use with your application, add '#import <hids.gatt>' to your .gatt file 43 */ 44 45 #include "hids_device.h" 46 47 #include "ble/att_db.h" 48 #include "ble/att_server.h" 49 #include "bluetooth_gatt.h" 50 #include "btstack_util.h" 51 #include "btstack_debug.h" 52 53 #define HIDS_DEVICE_ERROR_CODE_INAPPROPRIATE_CONNECTION_PARAMETERS 0x80 54 55 // storage for 'generic' HID Device with single Input, Output, and Feature Report 56 static hids_device_report_t hid_reports_generic_storage[3]; 57 58 typedef struct{ 59 uint16_t con_handle; 60 61 uint8_t hid_country_code; 62 const uint8_t * hid_descriptor; 63 uint16_t hid_descriptor_size; 64 65 uint16_t hid_report_map_handle; 66 uint8_t hid_protocol_mode; 67 uint16_t hid_protocol_mode_value_handle; 68 69 uint16_t hid_boot_mouse_input_value_handle; 70 uint16_t hid_boot_mouse_input_client_configuration_handle; 71 uint16_t hid_boot_mouse_input_client_configuration_value; 72 73 uint16_t hid_boot_keyboard_input_value_handle; 74 uint16_t hid_boot_keyboard_input_client_configuration_handle; 75 uint16_t hid_boot_keyboard_input_client_configuration_value; 76 77 hids_device_report_t * hid_reports; 78 79 uint8_t hid_input_reports_num; 80 uint8_t hid_output_reports_num; 81 uint8_t hid_feature_reports_num; 82 83 uint16_t hid_control_point_value_handle; 84 uint8_t hid_control_point_suspend; 85 86 btstack_context_callback_registration_t battery_callback; 87 } hids_device_t; 88 89 static hids_device_t hids_device; 90 91 static btstack_packet_handler_t packet_handler; 92 static att_service_handler_t hid_service; 93 94 // TODO: store hids device connection into list 95 static hids_device_t * hids_device_get_instance_for_con_handle(uint16_t con_handle){ 96 UNUSED(con_handle); 97 return &hids_device; 98 } 99 100 static hids_device_t * hids_device_create_instance(void){ 101 memset(&hids_device, 0, sizeof(hids_device_t)); 102 return &hids_device; 103 } 104 105 static hids_device_report_t * hids_device_get_report_for_client_configuration_handle(hids_device_t * device, uint16_t client_configuration_handle){ 106 uint8_t pos; 107 uint8_t total_reports = device->hid_input_reports_num + device->hid_output_reports_num + device->hid_feature_reports_num; 108 for (pos = 0 ; pos < total_reports ; pos++){ 109 if (device->hid_reports[pos].client_configuration_handle == client_configuration_handle){ 110 return &device->hid_reports[pos]; 111 } 112 } 113 return NULL; 114 } 115 116 static hids_device_report_t * hids_device_get_report_for_id(hids_device_t * device, uint16_t report_id){ 117 uint8_t pos; 118 uint8_t total_reports = device->hid_input_reports_num + device->hid_output_reports_num + device->hid_feature_reports_num; 119 for (pos = 0 ; pos < total_reports ; pos++){ 120 if (device->hid_reports[pos].id == report_id){ 121 return &device->hid_reports[pos]; 122 } 123 } 124 return NULL; 125 } 126 127 static void hids_device_emit_event_with_uint8(uint8_t event, hci_con_handle_t con_handle, uint8_t value){ 128 hids_device_t * instance = hids_device_get_instance_for_con_handle(con_handle); 129 if (!instance){ 130 log_error("no instance for handle 0x%02x", con_handle); 131 return; 132 } 133 134 if (!packet_handler) return; 135 uint8_t buffer[6]; 136 buffer[0] = HCI_EVENT_HIDS_META; 137 buffer[1] = 4; 138 buffer[2] = event; 139 little_endian_store_16(buffer, 3, (uint16_t) con_handle); 140 buffer[5] = value; 141 (*packet_handler)(HCI_EVENT_PACKET, 0, buffer, sizeof(buffer)); 142 } 143 144 static void hids_device_emit_event(uint8_t event, hci_con_handle_t con_handle){ 145 hids_device_t * instance = hids_device_get_instance_for_con_handle(con_handle); 146 if (!instance){ 147 log_error("no instance for handle 0x%02x", con_handle); 148 return; 149 } 150 151 if (!packet_handler) return; 152 uint8_t buffer[5]; 153 buffer[0] = HCI_EVENT_HIDS_META; 154 buffer[1] = 4; 155 buffer[2] = event; 156 little_endian_store_16(buffer, 3, (uint16_t) con_handle); 157 (*packet_handler)(HCI_EVENT_PACKET, 0, buffer, sizeof(buffer)); 158 } 159 160 static void hids_device_can_send_now(void * context){ 161 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) context; 162 // notify client 163 hids_device_t * instance = hids_device_get_instance_for_con_handle(con_handle); 164 if (!instance){ 165 log_error("no instance for handle 0x%02x", con_handle); 166 return; 167 } 168 169 if (!packet_handler) return; 170 uint8_t buffer[5]; 171 buffer[0] = HCI_EVENT_HIDS_META; 172 buffer[1] = 3; 173 buffer[2] = HIDS_SUBEVENT_CAN_SEND_NOW; 174 little_endian_store_16(buffer, 3, (uint16_t) con_handle); 175 (*packet_handler)(HCI_EVENT_PACKET, 0, buffer, sizeof(buffer)); 176 } 177 178 // ATT Client Read Callback for Dynamic Data 179 // - if buffer == NULL, don't copy data, just return size of value 180 // - if buffer != NULL, copy data and return number bytes copied 181 static uint16_t att_read_callback(hci_con_handle_t con_handle, uint16_t att_handle, uint16_t offset, uint8_t * buffer, uint16_t buffer_size){ 182 hids_device_t * instance = hids_device_get_instance_for_con_handle(con_handle); 183 if (!instance){ 184 log_error("no instance for handle 0x%02x", con_handle); 185 return HIDS_DEVICE_ERROR_CODE_INAPPROPRIATE_CONNECTION_PARAMETERS; 186 } 187 188 if (att_handle == instance->hid_protocol_mode_value_handle){ 189 log_info("Read protocol mode"); 190 return att_read_callback_handle_byte(instance->hid_protocol_mode, offset, buffer, buffer_size); 191 } 192 193 if (att_handle == instance->hid_report_map_handle){ 194 log_info("Read report map"); 195 return att_read_callback_handle_blob(instance->hid_descriptor, instance->hid_descriptor_size, offset, buffer, buffer_size); 196 } 197 198 if (att_handle == instance->hid_boot_mouse_input_client_configuration_handle){ 199 return att_read_callback_handle_little_endian_16(instance->hid_boot_mouse_input_client_configuration_value, offset, buffer, buffer_size); 200 } 201 202 if (att_handle == instance->hid_boot_keyboard_input_client_configuration_handle){ 203 return att_read_callback_handle_little_endian_16(instance->hid_boot_keyboard_input_client_configuration_value, offset, buffer, buffer_size); 204 } 205 206 if (att_handle == instance->hid_control_point_value_handle){ 207 if (buffer && (buffer_size >= 1u)){ 208 buffer[0] = instance->hid_control_point_suspend; 209 } 210 return 1; 211 } 212 213 hids_device_report_t * report = hids_device_get_report_for_client_configuration_handle(instance, att_handle); 214 if (report != NULL){ 215 return att_read_callback_handle_little_endian_16(report->client_configuration_value, offset, buffer, buffer_size); 216 } 217 return 0; 218 } 219 220 static int att_write_callback(hci_con_handle_t con_handle, uint16_t att_handle, uint16_t transaction_mode, uint16_t offset, uint8_t *buffer, uint16_t buffer_size){ 221 UNUSED(transaction_mode); 222 UNUSED(buffer_size); 223 UNUSED(offset); 224 225 hids_device_t * instance = hids_device_get_instance_for_con_handle(con_handle); 226 if (!instance){ 227 log_error("no instance for handle 0x%02x", con_handle); 228 return HIDS_DEVICE_ERROR_CODE_INAPPROPRIATE_CONNECTION_PARAMETERS; 229 } 230 231 if (att_handle == instance->hid_boot_mouse_input_client_configuration_handle){ 232 uint16_t new_value = little_endian_read_16(buffer, 0); 233 instance->hid_boot_mouse_input_client_configuration_value = new_value; 234 hids_device_emit_event_with_uint8(HIDS_SUBEVENT_BOOT_MOUSE_INPUT_REPORT_ENABLE, con_handle, (uint8_t) new_value); 235 } 236 if (att_handle == instance->hid_boot_keyboard_input_client_configuration_handle){ 237 uint16_t new_value = little_endian_read_16(buffer, 0); 238 instance->hid_boot_keyboard_input_client_configuration_value = new_value; 239 hids_device_emit_event_with_uint8(HIDS_SUBEVENT_BOOT_KEYBOARD_INPUT_REPORT_ENABLE, con_handle, (uint8_t) new_value); 240 } 241 242 if (att_handle == instance->hid_protocol_mode_value_handle){ 243 instance->hid_protocol_mode = buffer[0]; 244 log_info("Set protocol mode: %u", instance->hid_protocol_mode); 245 hids_device_emit_event_with_uint8(HIDS_SUBEVENT_PROTOCOL_MODE, con_handle, instance->hid_protocol_mode); 246 } 247 248 if (att_handle == instance->hid_control_point_value_handle){ 249 if (buffer_size < 1u){ 250 return ATT_ERROR_INVALID_OFFSET; 251 } 252 instance->hid_control_point_suspend = buffer[0]; 253 instance->con_handle = con_handle; 254 log_info("Set suspend tp: %u", instance->hid_control_point_suspend ); 255 if (instance->hid_control_point_suspend == 0u){ 256 hids_device_emit_event(HIDS_SUBEVENT_SUSPEND, con_handle); 257 } else if (instance->hid_control_point_suspend == 1u){ 258 hids_device_emit_event(HIDS_SUBEVENT_EXIT_SUSPEND, con_handle); 259 } 260 } 261 262 hids_device_report_t * report = hids_device_get_report_for_client_configuration_handle(instance, att_handle); 263 if (report != NULL){ 264 uint16_t new_value = little_endian_read_16(buffer, 0); 265 report->client_configuration_value = new_value; 266 log_info("Enable Report (type %u) notifications: %x", (uint8_t) report->type, new_value); 267 268 switch (report->type){ 269 case HID_REPORT_TYPE_INPUT: 270 hids_device_emit_event_with_uint8(HIDS_SUBEVENT_INPUT_REPORT_ENABLE, con_handle, (uint8_t) new_value); 271 break; 272 case HID_REPORT_TYPE_OUTPUT: 273 hids_device_emit_event_with_uint8(HIDS_SUBEVENT_OUTPUT_REPORT_ENABLE, con_handle, (uint8_t) new_value); 274 break; 275 case HID_REPORT_TYPE_FEATURE: 276 hids_device_emit_event_with_uint8(HIDS_SUBEVENT_FEATURE_REPORT_ENABLE, con_handle, (uint8_t) new_value); 277 break; 278 default: 279 btstack_unreachable(); 280 break; 281 } 282 } 283 return 0; 284 } 285 286 void hids_device_init_with_storage(uint8_t hid_country_code, const uint8_t * hid_descriptor, uint16_t hid_descriptor_size, 287 uint16_t num_reports, hids_device_report_t * report_storage){ 288 289 hids_device_t * instance = hids_device_create_instance(); 290 291 btstack_assert(num_reports > 0); 292 btstack_assert(report_storage != NULL); 293 294 instance->hid_country_code = hid_country_code; 295 instance->hid_descriptor = hid_descriptor; 296 instance->hid_descriptor_size = hid_descriptor_size; 297 298 // default 299 instance->hid_protocol_mode = 1; 300 301 // get service handle range 302 uint16_t start_handle = 0; 303 uint16_t end_handle = 0xffff; 304 int service_found = gatt_server_get_handle_range_for_service_with_uuid16(ORG_BLUETOOTH_SERVICE_HUMAN_INTERFACE_DEVICE, &start_handle, &end_handle); 305 btstack_assert(service_found != 0); 306 UNUSED(service_found); 307 308 // get report map handle 309 instance->hid_report_map_handle = gatt_server_get_value_handle_for_characteristic_with_uuid16(start_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_REPORT_MAP); 310 311 // get report map handle 312 instance->hid_protocol_mode_value_handle = gatt_server_get_value_handle_for_characteristic_with_uuid16(start_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_PROTOCOL_MODE); 313 314 // get value and client configuration handles for boot mouse input, boot keyboard input and report input 315 instance->hid_boot_mouse_input_value_handle = gatt_server_get_value_handle_for_characteristic_with_uuid16(start_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_BOOT_MOUSE_INPUT_REPORT); 316 instance->hid_boot_mouse_input_client_configuration_handle = gatt_server_get_client_configuration_handle_for_characteristic_with_uuid16(start_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_BOOT_MOUSE_INPUT_REPORT); 317 318 instance->hid_boot_keyboard_input_value_handle = gatt_server_get_value_handle_for_characteristic_with_uuid16(start_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_BOOT_KEYBOARD_INPUT_REPORT); 319 instance->hid_boot_keyboard_input_client_configuration_handle = gatt_server_get_client_configuration_handle_for_characteristic_with_uuid16(start_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_BOOT_KEYBOARD_INPUT_REPORT); 320 321 instance->hid_control_point_value_handle = gatt_server_get_value_handle_for_characteristic_with_uuid16(start_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_HID_CONTROL_POINT); 322 323 log_info("hid_report_map_handle 0x%02x", instance->hid_report_map_handle); 324 log_info("hid_protocol_mode_value_handle 0x%02x", instance->hid_protocol_mode_value_handle); 325 log_info("hid_boot_mouse_input_value_handle 0x%02x", instance->hid_boot_mouse_input_value_handle); 326 log_info("hid_boot_mouse_input_client_configuration_handle 0x%02x", instance->hid_boot_mouse_input_client_configuration_handle); 327 log_info("hid_boot_keyboard_input_value_handle 0x%02x", instance->hid_boot_keyboard_input_value_handle); 328 log_info("hid_boot_keyboard_input_client_configuration_handle 0x%02x", instance->hid_boot_keyboard_input_client_configuration_handle); 329 log_info("hid_control_point_value_handle 0x%02x", instance->hid_control_point_value_handle); 330 331 instance->hid_reports = report_storage; 332 333 uint16_t hid_reports_num = num_reports; 334 uint16_t assigned_reports_num = 0; 335 uint16_t start_chr_handle = start_handle; 336 337 while ( (start_chr_handle < end_handle) && (assigned_reports_num < hid_reports_num)) { 338 uint16_t chr_value_handle = gatt_server_get_value_handle_for_characteristic_with_uuid16(start_chr_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_REPORT); 339 if (chr_value_handle == 0){ 340 break; 341 } 342 343 uint16_t chr_client_configuration_handle = gatt_server_get_client_configuration_handle_for_characteristic_with_uuid16(start_chr_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_REPORT); 344 uint16_t report_reference_handle = gatt_server_get_descriptor_handle_for_characteristic_with_uuid16(start_chr_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_REPORT, ORG_BLUETOOTH_DESCRIPTOR_REPORT_REFERENCE); 345 uint16_t report_reference_value_len; 346 const uint8_t * report_reference_value = gatt_server_get_const_value_for_handle(report_reference_handle, &report_reference_value_len); 347 348 if (report_reference_value == NULL){ 349 break; 350 } 351 if (report_reference_value_len != 2){ 352 break; 353 } 354 355 hids_device_report_t * report = &report_storage[assigned_reports_num]; 356 report->value_handle = chr_value_handle; 357 report->client_configuration_handle = chr_client_configuration_handle; 358 report->client_configuration_value = 0; 359 360 report->id = report_reference_value[0]; 361 report->type = (hid_report_type_t)report_reference_value[1]; 362 363 switch (report->type){ 364 case HID_REPORT_TYPE_INPUT: 365 instance->hid_input_reports_num++; 366 break; 367 case HID_REPORT_TYPE_OUTPUT: 368 instance->hid_output_reports_num++; 369 break; 370 case HID_REPORT_TYPE_FEATURE: 371 instance->hid_feature_reports_num++; 372 break; 373 default: 374 btstack_unreachable(); 375 return; 376 } 377 log_info("hid_report_value_handle 0x%02x, id %u, type %u", report->value_handle, report->id, (uint8_t)report->type); 378 log_info("hid_report_client_configuration_handle 0x%02x", report->client_configuration_handle); 379 380 assigned_reports_num++; 381 start_chr_handle = chr_client_configuration_handle + 1; 382 } 383 384 // register service with ATT Server 385 hid_service.start_handle = start_handle; 386 hid_service.end_handle = end_handle; 387 hid_service.read_callback = &att_read_callback; 388 hid_service.write_callback = &att_write_callback; 389 att_server_register_service_handler(&hid_service); 390 } 391 392 /** 393 * @brief Set up HIDS Device 394 */ 395 void hids_device_init(uint8_t country_code, const uint8_t * descriptor, uint16_t descriptor_size){ 396 uint16_t hid_reports_num = sizeof(hid_reports_generic_storage) / sizeof(hids_device_report_t); 397 hids_device_init_with_storage(country_code, descriptor, descriptor_size, hid_reports_num, hid_reports_generic_storage); 398 } 399 400 /** 401 * @brief Register callback for the HIDS Device client. 402 * @param callback 403 */ 404 void hids_device_register_packet_handler(btstack_packet_handler_t callback){ 405 packet_handler = callback; 406 } 407 408 /** 409 * @brief Request can send now event to send HID Report 410 * Generates an HIDS_SUBEVENT_CAN_SEND_NOW subevent 411 * @param hid_cid 412 */ 413 void hids_device_request_can_send_now_event(hci_con_handle_t con_handle){ 414 hids_device_t * instance = hids_device_get_instance_for_con_handle(con_handle); 415 if (!instance){ 416 log_error("no instance for handle 0x%02x", con_handle); 417 return; 418 } 419 420 instance->battery_callback.callback = &hids_device_can_send_now; 421 instance->battery_callback.context = (void*) (uintptr_t) con_handle; 422 att_server_register_can_send_now_callback(&instance->battery_callback, con_handle); 423 } 424 425 /** 426 * @brief Send HID Report: Input 427 */ 428 429 uint8_t hids_device_send_report_with_id(hci_con_handle_t con_handle, uint16_t report_id, const uint8_t * report, uint16_t report_len){ 430 hids_device_t * instance = hids_device_get_instance_for_con_handle(con_handle); 431 if (!instance){ 432 log_error("no instance for handle 0x%02x", con_handle); 433 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 434 } 435 436 hids_device_report_t * report_storage = hids_device_get_report_for_id(instance, report_id); 437 if (report_storage == NULL){ 438 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 439 } 440 441 return att_server_notify(con_handle, report_storage->value_handle, report, report_len); 442 } 443 444 static uint8_t hids_device_send_report_with_type(hci_con_handle_t con_handle, const uint8_t * report, uint16_t report_len, hid_report_type_t report_type){ 445 hids_device_t * instance = hids_device_get_instance_for_con_handle(con_handle); 446 if (!instance){ 447 log_error("no instance for handle 0x%02x", con_handle); 448 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 449 } 450 451 uint8_t pos = 0; 452 while (pos < (instance->hid_input_reports_num + instance->hid_output_reports_num + instance->hid_feature_reports_num)){ 453 hids_device_report_t * report_storage = &instance->hid_reports[pos]; 454 455 if (report_storage->type == report_type){ 456 return att_server_notify(con_handle, report_storage->value_handle, report, report_len); 457 } 458 } 459 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 460 } 461 462 void hids_device_send_input_report(hci_con_handle_t con_handle, const uint8_t * report, uint16_t report_len){ 463 (void)hids_device_send_report_with_type(con_handle, report, report_len, HID_REPORT_TYPE_INPUT); 464 } 465 466 /** 467 * @brief Send HID Report: Output 468 */ 469 void hids_device_send_output_report(hci_con_handle_t con_handle, const uint8_t * report, uint16_t report_len){ 470 (void)hids_device_send_report_with_type(con_handle, report, report_len, HID_REPORT_TYPE_OUTPUT); 471 } 472 473 /** 474 * @brief Send HID Report: Feature 475 */ 476 void hids_device_send_feature_report(hci_con_handle_t con_handle, const uint8_t * report, uint16_t report_len){ 477 (void)hids_device_send_report_with_type(con_handle, report, report_len, HID_REPORT_TYPE_FEATURE); 478 } 479 480 /** 481 * @brief Send HID Boot Mouse Input Report 482 */ 483 void hids_device_send_boot_mouse_input_report(hci_con_handle_t con_handle, const uint8_t * report, uint16_t report_len){ 484 hids_device_t * instance = hids_device_get_instance_for_con_handle(con_handle); 485 if (!instance){ 486 log_error("no instance for handle 0x%02x", con_handle); 487 return; 488 } 489 att_server_notify(con_handle, instance->hid_boot_mouse_input_value_handle, report, report_len); 490 } 491 492 /** 493 * @brief Send HID Boot Mouse Input Report 494 */ 495 void hids_device_send_boot_keyboard_input_report(hci_con_handle_t con_handle, const uint8_t * report, uint16_t report_len){ 496 hids_device_t * instance = hids_device_get_instance_for_con_handle(con_handle); 497 if (!instance){ 498 log_error("no instance for handle 0x%02x", con_handle); 499 return; 500 } 501 att_server_notify(con_handle, instance->hid_boot_keyboard_input_value_handle, report, report_len); 502 } 503