1 /* 2 * Copyright (C) 2019 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 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "mesh_access.c" 39 40 #include <string.h> 41 #include <stdio.h> 42 #include <stdarg.h> 43 44 #include "mesh/mesh_access.h" 45 46 #include "btstack_debug.h" 47 #include "btstack_memory.h" 48 #include "btstack_tlv.h" 49 50 #include "mesh/beacon.h" 51 #include "mesh/mesh_foundation.h" 52 #include "mesh/mesh_iv_index_seq_number.h" 53 #include "mesh/mesh_node.h" 54 #include "mesh/mesh_proxy.h" 55 #include "mesh/mesh_upper_transport.h" 56 #include "mesh/mesh.h" 57 58 #define MEST_TRANSACTION_TIMEOUT_MS 6000 59 60 static void mesh_access_message_process_handler(mesh_pdu_t * pdu); 61 static void mesh_access_upper_transport_handler(mesh_transport_callback_type_t callback_type, mesh_transport_status_t status, mesh_pdu_t * pdu); 62 static const mesh_operation_t * mesh_model_lookup_operation_by_opcode(mesh_model_t * model, uint32_t opcode); 63 64 // receive 65 static uint16_t mesh_access_received_pdu_refcount; 66 67 // acknowledged messages 68 static btstack_linked_list_t mesh_access_acknowledged_messages; 69 static btstack_timer_source_t mesh_access_acknowledged_timer; 70 static int mesh_access_acknowledged_timer_active; 71 72 // Transitions 73 static uint8_t mesh_transaction_id_counter = 0; 74 75 void mesh_access_init(void){ 76 // register with upper transport 77 mesh_upper_transport_register_access_message_handler(&mesh_access_message_process_handler); 78 mesh_upper_transport_set_higher_layer_handler(&mesh_access_upper_transport_handler); 79 } 80 81 void mesh_access_emit_state_update_bool(btstack_packet_handler_t event_handler, uint8_t element_index, uint32_t model_identifier, 82 model_state_id_t state_identifier, model_state_update_reason_t reason, uint8_t value){ 83 if (event_handler == NULL) return; 84 uint8_t event[14] = {HCI_EVENT_MESH_META, 12, MESH_SUBEVENT_STATE_UPDATE_BOOL}; 85 int pos = 3; 86 event[pos++] = element_index; 87 little_endian_store_32(event, pos, model_identifier); 88 pos += 4; 89 little_endian_store_32(event, pos, (uint32_t)state_identifier); 90 pos += 4; 91 event[pos++] = (uint8_t)reason; 92 event[pos++] = value; 93 (*event_handler)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 94 } 95 96 void mesh_access_emit_state_update_int16(btstack_packet_handler_t event_handler, uint8_t element_index, uint32_t model_identifier, 97 model_state_id_t state_identifier, model_state_update_reason_t reason, int16_t value){ 98 if (event_handler == NULL) return; 99 uint8_t event[15] = {HCI_EVENT_MESH_META, 13, MESH_SUBEVENT_STATE_UPDATE_BOOL}; 100 int pos = 3; 101 event[pos++] = element_index; 102 little_endian_store_32(event, pos, model_identifier); 103 pos += 4; 104 little_endian_store_32(event, pos, (uint32_t)state_identifier); 105 pos += 4; 106 event[pos++] = (uint8_t)reason; 107 little_endian_store_16(event, pos, (uint16_t) value); 108 pos += 2; 109 (*event_handler)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 110 } 111 112 uint8_t mesh_access_acknowledged_message_retransmissions(void){ 113 return 3; 114 } 115 116 uint32_t mesh_access_acknowledged_message_timeout_ms(void){ 117 return 30000; 118 } 119 120 #define MESH_ACCESS_OPCODE_INVALID 0xFFFFFFFFu 121 #define MESH_ACCESS_OPCODE_NOT_SET 0xFFFFFFFEu 122 123 static uint32_t mesh_access_message_ack_opcode(mesh_pdu_t * pdu){ 124 switch (pdu->pdu_type){ 125 case MESH_PDU_TYPE_TRANSPORT: 126 return ((mesh_transport_pdu_t *)pdu)->ack_opcode; 127 case MESH_PDU_TYPE_SEGMENTED: 128 return ((mesh_segmented_pdu_t *)pdu)->ack_opcode; 129 default: 130 btstack_assert(0); 131 return MESH_ACCESS_OPCODE_INVALID; 132 } 133 } 134 135 static void mesh_access_message_set_ack_opcode(mesh_pdu_t * pdu, uint32_t ack_opcode){ 136 switch (pdu->pdu_type){ 137 case MESH_PDU_TYPE_TRANSPORT: 138 ((mesh_transport_pdu_t *)pdu)->ack_opcode = ack_opcode; 139 break; 140 case MESH_PDU_TYPE_SEGMENTED: 141 ((mesh_segmented_pdu_t *)pdu)->ack_opcode = ack_opcode; 142 break; 143 default: 144 btstack_assert(0); 145 break; 146 } 147 } 148 149 static uint8_t mesh_access_message_retransmit_count(mesh_pdu_t * pdu){ 150 switch (pdu->pdu_type){ 151 case MESH_PDU_TYPE_TRANSPORT: 152 return ((mesh_transport_pdu_t *)pdu)->retransmit_count; 153 case MESH_PDU_TYPE_SEGMENTED: 154 return ((mesh_segmented_pdu_t *)pdu)->retransmit_count; 155 default: 156 btstack_assert(0); 157 return 0; 158 } 159 } 160 161 static void mesh_access_message_set_retransmit_count(mesh_pdu_t * pdu, uint8_t retransmit_count){ 162 switch (pdu->pdu_type){ 163 case MESH_PDU_TYPE_TRANSPORT: 164 ((mesh_transport_pdu_t *)pdu)->retransmit_count = retransmit_count; 165 break; 166 case MESH_PDU_TYPE_SEGMENTED: 167 ((mesh_segmented_pdu_t *)pdu)->retransmit_count = retransmit_count; 168 break; 169 default: 170 btstack_assert(0); 171 break; 172 } 173 } 174 175 static uint32_t mesh_access_message_retransmit_timeout_ms(mesh_pdu_t * pdu){ 176 switch (pdu->pdu_type){ 177 case MESH_PDU_TYPE_TRANSPORT: 178 return ((mesh_transport_pdu_t *)pdu)->retransmit_timeout_ms; 179 case MESH_PDU_TYPE_SEGMENTED: 180 return ((mesh_segmented_pdu_t *)pdu)->retransmit_timeout_ms; 181 default: 182 btstack_assert(0); 183 return 0; 184 } 185 } 186 187 static void mesh_access_message_set_retransmit_timeout_ms(mesh_pdu_t * pdu, uint32_t retransmit_timeout_ms){ 188 switch (pdu->pdu_type){ 189 case MESH_PDU_TYPE_TRANSPORT: 190 ((mesh_transport_pdu_t *)pdu)->retransmit_timeout_ms = retransmit_timeout_ms; 191 break; 192 case MESH_PDU_TYPE_SEGMENTED: 193 ((mesh_segmented_pdu_t *)pdu)->retransmit_timeout_ms = retransmit_timeout_ms; 194 break; 195 default: 196 btstack_assert(0); 197 break; 198 } 199 } 200 201 void mesh_access_send_unacknowledged_pdu(mesh_pdu_t * pdu){ 202 mesh_access_message_set_ack_opcode(pdu, MESH_ACCESS_OPCODE_INVALID); 203 mesh_upper_transport_send_access_pdu(pdu); 204 } 205 206 void mesh_access_send_acknowledged_pdu(mesh_pdu_t * pdu, uint8_t retransmissions, uint32_t ack_opcode){ 207 mesh_access_message_set_retransmit_count(pdu, retransmissions); 208 mesh_access_message_set_ack_opcode(pdu, ack_opcode); 209 210 mesh_upper_transport_send_access_pdu(pdu); 211 } 212 213 #define MESH_SUBEVENT_MESSAGE_NOT_ACKNOWLEDGED 0x30 214 215 static void mesh_access_acknowledged_run(btstack_timer_source_t * ts){ 216 UNUSED(ts); 217 218 uint32_t now = btstack_run_loop_get_time_ms(); 219 220 // handle timeouts 221 btstack_linked_list_iterator_t ack_it; 222 btstack_linked_list_iterator_init(&ack_it, &mesh_access_acknowledged_messages); 223 while (btstack_linked_list_iterator_has_next(&ack_it)){ 224 mesh_pdu_t * pdu = (mesh_pdu_t *) btstack_linked_list_iterator_next(&ack_it); 225 uint32_t retransmit_timeout_ms = mesh_access_message_retransmit_timeout_ms(pdu); 226 if (btstack_time_delta(now, retransmit_timeout_ms) >= 0) { 227 // remove from list 228 btstack_linked_list_remove(&mesh_access_acknowledged_messages, (btstack_linked_item_t*) pdu); 229 // retransmit or report failure 230 uint8_t retransmit_count = mesh_access_message_retransmit_count(pdu); 231 if (retransmit_count){ 232 mesh_access_message_set_retransmit_count(pdu, retransmit_count - 1); 233 mesh_upper_transport_send_access_pdu(pdu); 234 } else { 235 // find correct model and emit error 236 uint16_t src = mesh_pdu_src(pdu); 237 uint16_t dst = mesh_pdu_dst(pdu); 238 mesh_element_t * element = mesh_node_element_for_unicast_address(src); 239 if (element){ 240 // find 241 mesh_model_iterator_t model_it; 242 mesh_model_iterator_init(&model_it, element); 243 while (mesh_model_iterator_has_next(&model_it)){ 244 mesh_model_t * model = mesh_model_iterator_next(&model_it); 245 // find opcode in table 246 uint32_t ack_opcode = mesh_access_message_ack_opcode(pdu); 247 const mesh_operation_t * operation = mesh_model_lookup_operation_by_opcode(model, ack_opcode); 248 if (operation == NULL) continue; 249 if (model->model_packet_handler == NULL) continue; 250 // emit event 251 uint8_t event[13]; 252 event[0] = HCI_EVENT_MESH_META; 253 event[1] = sizeof(event) - 2; 254 event[2] = element->element_index; 255 little_endian_store_32(event, 3, model->model_identifier); 256 little_endian_store_32(event, 7, ack_opcode); 257 little_endian_store_16(event, 11, dst); 258 (*model->model_packet_handler)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 259 } 260 } 261 262 // free 263 mesh_upper_transport_pdu_free(pdu); 264 } 265 } 266 } 267 268 if (mesh_access_acknowledged_timer_active) return; 269 270 // find earliest timeout and set timer 271 btstack_linked_list_iterator_init(&ack_it, &mesh_access_acknowledged_messages); 272 int32_t next_timeout_ms = 0; 273 while (btstack_linked_list_iterator_has_next(&ack_it)){ 274 mesh_pdu_t * pdu = (mesh_pdu_t *) btstack_linked_list_iterator_next(&ack_it); 275 uint32_t retransmit_timeout_ms = mesh_access_message_retransmit_timeout_ms(pdu); 276 int32_t timeout_delta_ms = btstack_time_delta(retransmit_timeout_ms, now); 277 if (next_timeout_ms == 0 || timeout_delta_ms < next_timeout_ms){ 278 next_timeout_ms = timeout_delta_ms; 279 } 280 } 281 282 // set timer 283 if (next_timeout_ms == 0) return; 284 285 btstack_run_loop_set_timer(&mesh_access_acknowledged_timer, next_timeout_ms); 286 btstack_run_loop_set_timer_handler(&mesh_access_acknowledged_timer, mesh_access_acknowledged_run); 287 btstack_run_loop_add_timer(&mesh_access_acknowledged_timer); 288 mesh_access_acknowledged_timer_active = 1; 289 } 290 291 static void mesh_access_acknowledged_received(uint16_t rx_src, uint32_t opcode){ 292 // check if received src matches our dest 293 // free acknowledged messages if we were waiting for this message 294 295 btstack_linked_list_iterator_t ack_it; 296 btstack_linked_list_iterator_init(&ack_it, &mesh_access_acknowledged_messages); 297 while (btstack_linked_list_iterator_has_next(&ack_it)){ 298 mesh_pdu_t * tx_pdu = (mesh_pdu_t *) btstack_linked_list_iterator_next(&ack_it); 299 uint16_t tx_dest = mesh_pdu_dst(tx_pdu); 300 if (tx_dest != rx_src) continue; 301 if (mesh_access_message_ack_opcode(tx_pdu) != opcode) continue; 302 // got expected response from dest, remove from outgoing messages 303 mesh_upper_transport_pdu_free(tx_pdu); 304 return; 305 } 306 } 307 308 static void mesh_access_upper_transport_handler(mesh_transport_callback_type_t callback_type, mesh_transport_status_t status, mesh_pdu_t * pdu){ 309 UNUSED(status); 310 switch (callback_type){ 311 case MESH_TRANSPORT_PDU_SENT: 312 // unacknowledged -> free 313 if (mesh_access_message_ack_opcode(pdu) == MESH_ACCESS_OPCODE_INVALID){ 314 mesh_upper_transport_pdu_free(pdu); 315 break; 316 } 317 // setup timeout 318 mesh_access_message_set_retransmit_timeout_ms(pdu, btstack_run_loop_get_time_ms() + mesh_access_acknowledged_message_timeout_ms()); 319 // add to mesh_access_acknowledged_messages 320 btstack_linked_list_add(&mesh_access_acknowledged_messages, (btstack_linked_item_t *) pdu); 321 // update timer 322 mesh_access_acknowledged_run(NULL); 323 break; 324 default: 325 break; 326 } 327 } 328 329 // Mesh Model Transitions 330 331 uint32_t mesh_access_time_gdtt2ms(uint8_t time_gdtt){ 332 uint8_t num_steps = mesh_access_transitions_num_steps_from_gdtt(time_gdtt); 333 if (num_steps > 0x3E) return 0; 334 335 return mesh_access_transitions_step_ms_from_gdtt(time_gdtt) * num_steps; 336 } 337 338 uint8_t mesh_access_transitions_num_steps_from_gdtt(uint8_t time_gdtt){ 339 return time_gdtt & 0x3fu; 340 } 341 342 uint32_t mesh_access_transitions_step_ms_from_gdtt(uint8_t time_gdtt){ 343 mesh_default_transition_step_resolution_t step_resolution = (mesh_default_transition_step_resolution_t) (time_gdtt >> 6); 344 switch (step_resolution){ 345 case MESH_DEFAULT_TRANSITION_STEP_RESOLUTION_100ms: 346 return 100; 347 case MESH_DEFAULT_TRANSITION_STEP_RESOLUTION_1s: 348 return 1000; 349 case MESH_DEFAULT_TRANSITION_STEP_RESOLUTION_10s: 350 return 10000; 351 case MESH_DEFAULT_TRANSITION_STEP_RESOLUTION_10min: 352 return 600000; 353 default: 354 return 0; 355 } 356 } 357 358 uint8_t mesh_access_transactions_get_next_transaction_id(void){ 359 mesh_transaction_id_counter++; 360 if (mesh_transaction_id_counter == 0){ 361 mesh_transaction_id_counter = 1; 362 } 363 return mesh_transaction_id_counter; 364 } 365 366 static int mesh_access_transitions_transaction_is_expired(mesh_transition_t * transition){ 367 return (btstack_run_loop_get_time_ms() - transition->transaction_timestamp_ms) > MEST_TRANSACTION_TIMEOUT_MS; 368 } 369 370 mesh_transaction_status_t mesh_access_transitions_transaction_status(mesh_transition_t * transition, uint8_t transaction_identifier, uint16_t src_address, uint16_t dst_address){ 371 if (transition->src_address != src_address || transition->dst_address != dst_address) return MESH_TRANSACTION_STATUS_DIFFERENT_DST_OR_SRC; 372 373 if (transition->transaction_identifier == transaction_identifier && !mesh_access_transitions_transaction_is_expired(transition)){ 374 return MESH_TRANSACTION_STATUS_RETRANSMISSION; 375 } 376 return MESH_TRANSACTION_STATUS_NEW; 377 } 378 379 void mesh_access_transitions_init_transaction(mesh_transition_t * transition, uint8_t transaction_identifier, uint16_t src_address, uint16_t dst_address){ 380 transition->transaction_timestamp_ms = btstack_run_loop_get_time_ms(); 381 transition->transaction_identifier = transaction_identifier; 382 transition->src_address = src_address; 383 transition->dst_address = dst_address; 384 } 385 386 static void mesh_server_transition_timeout(btstack_timer_source_t * ts){ 387 mesh_transition_t * base_transition = (mesh_transition_t*) btstack_run_loop_get_timer_context(ts); 388 switch (base_transition->state){ 389 case MESH_TRANSITION_STATE_DELAYED: 390 base_transition->state = MESH_TRANSITION_STATE_ACTIVE; 391 (*base_transition->transition_callback)(base_transition, MODEL_STATE_UPDATE_REASON_TRANSITION_START); 392 if (base_transition->num_steps > 0){ 393 btstack_run_loop_set_timer(&base_transition->timer, base_transition->step_duration_ms); 394 btstack_run_loop_add_timer(&base_transition->timer); 395 return; 396 } 397 base_transition->state = MESH_TRANSITION_STATE_IDLE; 398 (*base_transition->transition_callback)(base_transition, MODEL_STATE_UPDATE_REASON_TRANSITION_END); 399 break; 400 case MESH_TRANSITION_STATE_ACTIVE: 401 if (base_transition->num_steps < MESH_TRANSITION_NUM_STEPS_INFINITE){ 402 base_transition->num_steps--; 403 } 404 (*base_transition->transition_callback)(base_transition, MODEL_STATE_UPDATE_REASON_TRANSITION_ACTIVE); 405 if (base_transition->num_steps > 0){ 406 btstack_run_loop_set_timer(&base_transition->timer, base_transition->step_duration_ms); 407 btstack_run_loop_add_timer(&base_transition->timer); 408 return; 409 } 410 base_transition->state = MESH_TRANSITION_STATE_IDLE; 411 (*base_transition->transition_callback)(base_transition, MODEL_STATE_UPDATE_REASON_TRANSITION_END); 412 break; 413 default: 414 break; 415 } 416 } 417 418 void mesh_access_transition_setup(mesh_model_t *mesh_model, mesh_transition_t * base_transition, uint8_t transition_time_gdtt, uint8_t delay_time_gdtt, void (*transition_callback)(mesh_transition_t * base_transition, model_state_update_reason_t event)){ 419 420 base_transition->mesh_model = mesh_model; 421 base_transition->num_steps = mesh_access_transitions_num_steps_from_gdtt(transition_time_gdtt); 422 base_transition->step_resolution = (mesh_default_transition_step_resolution_t) (transition_time_gdtt >> 6); 423 base_transition->step_duration_ms = mesh_access_transitions_step_ms_from_gdtt(transition_time_gdtt); 424 base_transition->transition_callback = transition_callback; 425 426 btstack_run_loop_set_timer_context(&base_transition->timer, base_transition); 427 btstack_run_loop_set_timer_handler(&base_transition->timer, &mesh_server_transition_timeout); 428 429 // delayed 430 if (delay_time_gdtt > 0){ 431 base_transition->state = MESH_TRANSITION_STATE_DELAYED; 432 btstack_run_loop_set_timer(&base_transition->timer, delay_time_gdtt * 5); 433 btstack_run_loop_add_timer(&base_transition->timer); 434 return; 435 } 436 437 // started 438 if (base_transition->num_steps > 0){ 439 base_transition->state = MESH_TRANSITION_STATE_ACTIVE; 440 btstack_run_loop_set_timer(&base_transition->timer, base_transition->step_duration_ms); 441 btstack_run_loop_add_timer(&base_transition->timer); 442 return; 443 } 444 445 // instanteneous update 446 base_transition->state = MESH_TRANSITION_STATE_IDLE; 447 (*transition_callback)(base_transition, MODEL_STATE_UPDATE_REASON_SET); 448 return; 449 } 450 451 void mesh_access_transitions_abort_transaction(mesh_transition_t * base_transition){ 452 btstack_run_loop_add_timer(&base_transition->timer); 453 } 454 455 static uint16_t mesh_access_src(mesh_access_pdu_t * access_pdu){ 456 return big_endian_read_16(access_pdu->network_header, 5); 457 } 458 459 static uint16_t mesh_access_dst(mesh_access_pdu_t * access_pdu){ 460 return big_endian_read_16(access_pdu->network_header, 7); 461 } 462 463 uint16_t mesh_pdu_ctl(mesh_pdu_t * pdu){ 464 switch (pdu->pdu_type){ 465 case MESH_PDU_TYPE_TRANSPORT: 466 return mesh_transport_ctl((mesh_transport_pdu_t*) pdu); 467 case MESH_PDU_TYPE_NETWORK: 468 return mesh_network_control((mesh_network_pdu_t *) pdu); 469 default: 470 btstack_assert(false); 471 return 0; 472 } 473 } 474 475 uint16_t mesh_pdu_ttl(mesh_pdu_t * pdu){ 476 switch (pdu->pdu_type){ 477 case MESH_PDU_TYPE_TRANSPORT: 478 return mesh_transport_ttl((mesh_transport_pdu_t*) pdu); 479 case MESH_PDU_TYPE_NETWORK: 480 return mesh_network_ttl((mesh_network_pdu_t *) pdu); 481 default: 482 btstack_assert(false); 483 return 0; 484 } 485 } 486 487 uint16_t mesh_pdu_src(mesh_pdu_t * pdu){ 488 switch (pdu->pdu_type){ 489 case MESH_PDU_TYPE_ACCESS: 490 return mesh_access_src((mesh_access_pdu_t *) pdu); 491 case MESH_PDU_TYPE_TRANSPORT: 492 return mesh_transport_src((mesh_transport_pdu_t*) pdu); 493 case MESH_PDU_TYPE_NETWORK: 494 return mesh_network_src((mesh_network_pdu_t *) pdu); 495 default: 496 btstack_assert(false); 497 return MESH_ADDRESS_UNSASSIGNED; 498 } 499 } 500 501 uint16_t mesh_pdu_dst(mesh_pdu_t * pdu){ 502 switch (pdu->pdu_type){ 503 case MESH_PDU_TYPE_ACCESS: 504 return mesh_access_dst((mesh_access_pdu_t *) pdu); 505 case MESH_PDU_TYPE_TRANSPORT: 506 return mesh_transport_dst((mesh_transport_pdu_t*) pdu); 507 case MESH_PDU_TYPE_NETWORK: 508 return mesh_network_dst((mesh_network_pdu_t *) pdu); 509 default: 510 btstack_assert(false); 511 return MESH_ADDRESS_UNSASSIGNED; 512 } 513 } 514 515 uint16_t mesh_pdu_netkey_index(mesh_pdu_t * pdu){ 516 switch (pdu->pdu_type){ 517 case MESH_PDU_TYPE_ACCESS: 518 return ((mesh_access_pdu_t*) pdu)->netkey_index; 519 case MESH_PDU_TYPE_TRANSPORT: 520 return ((mesh_transport_pdu_t*) pdu)->netkey_index; 521 case MESH_PDU_TYPE_NETWORK: 522 return ((mesh_network_pdu_t *) pdu)->netkey_index; 523 default: 524 btstack_assert(false); 525 return 0; 526 } 527 } 528 529 uint16_t mesh_pdu_appkey_index(mesh_pdu_t * pdu){ 530 switch (pdu->pdu_type){ 531 case MESH_PDU_TYPE_ACCESS: 532 return ((mesh_access_pdu_t*) pdu)->appkey_index; 533 case MESH_PDU_TYPE_TRANSPORT: 534 return ((mesh_transport_pdu_t*) pdu)->appkey_index; 535 default: 536 btstack_assert(false); 537 return 0; 538 } 539 } 540 541 uint16_t mesh_pdu_len(mesh_pdu_t * pdu){ 542 switch (pdu->pdu_type){ 543 case MESH_PDU_TYPE_ACCESS: 544 return ((mesh_access_pdu_t*) pdu)->len; 545 case MESH_PDU_TYPE_TRANSPORT: 546 return ((mesh_transport_pdu_t*) pdu)->len; 547 case MESH_PDU_TYPE_NETWORK: 548 return ((mesh_network_pdu_t *) pdu)->len - 10; 549 default: 550 btstack_assert(false); 551 return 0; 552 } 553 } 554 555 uint8_t * mesh_pdu_data(mesh_pdu_t * pdu){ 556 switch (pdu->pdu_type){ 557 case MESH_PDU_TYPE_ACCESS: 558 return ((mesh_access_pdu_t*) pdu)->data; 559 case MESH_PDU_TYPE_TRANSPORT: 560 return ((mesh_transport_pdu_t*) pdu)->data; 561 case MESH_PDU_TYPE_NETWORK: 562 return &((mesh_network_pdu_t *) pdu)->data[10]; 563 default: 564 btstack_assert(false); 565 return NULL; 566 } 567 } 568 569 uint8_t mesh_pdu_control_opcode(mesh_pdu_t * pdu){ 570 switch (pdu->pdu_type){ 571 case MESH_PDU_TYPE_TRANSPORT: 572 return mesh_transport_control_opcode((mesh_transport_pdu_t*) pdu); 573 case MESH_PDU_TYPE_NETWORK: 574 return mesh_network_control_opcode((mesh_network_pdu_t *) pdu); 575 default: 576 btstack_assert(false); 577 return 0xff; 578 } 579 } 580 581 // message parser 582 583 static int mesh_access_get_opcode(uint8_t * buffer, uint16_t buffer_size, uint32_t * opcode, uint16_t * opcode_size){ 584 switch (buffer[0] >> 6){ 585 case 0: 586 case 1: 587 if (buffer[0] == 0x7f) return 0; 588 *opcode = buffer[0]; 589 *opcode_size = 1; 590 return 1; 591 case 2: 592 if (buffer_size < 2) return 0; 593 *opcode = big_endian_read_16(buffer, 0); 594 *opcode_size = 2; 595 return 1; 596 case 3: 597 if (buffer_size < 3) return 0; 598 *opcode = (buffer[0] << 16) | little_endian_read_16(buffer, 1); 599 *opcode_size = 3; 600 return 1; 601 default: 602 return 0; 603 } 604 } 605 606 int mesh_access_pdu_get_opcode(mesh_pdu_t * pdu, uint32_t * opcode, uint16_t * opcode_size){ 607 btstack_assert(pdu->pdu_type == MESH_PDU_TYPE_ACCESS); 608 return mesh_access_get_opcode(((mesh_access_pdu_t *) pdu)->data, ((mesh_access_pdu_t *) pdu)->len, opcode, 609 opcode_size); 610 } 611 612 void mesh_access_parser_skip(mesh_access_parser_state_t * state, uint16_t bytes_to_skip){ 613 state->data += bytes_to_skip; 614 state->len -= bytes_to_skip; 615 } 616 617 int mesh_access_parser_init(mesh_access_parser_state_t * state, mesh_pdu_t * pdu){ 618 btstack_assert(pdu->pdu_type == MESH_PDU_TYPE_ACCESS); 619 state->data = mesh_pdu_data(pdu); 620 state->len = mesh_pdu_len(pdu); 621 622 uint16_t opcode_size = 0; 623 int ok = mesh_access_get_opcode(state->data, state->len, &state->opcode, &opcode_size); 624 if (ok){ 625 mesh_access_parser_skip(state, opcode_size); 626 } 627 return ok; 628 } 629 630 uint16_t mesh_access_parser_available(mesh_access_parser_state_t * state){ 631 return state->len; 632 } 633 634 uint8_t mesh_access_parser_get_u8(mesh_access_parser_state_t * state){ 635 uint8_t value = *state->data; 636 mesh_access_parser_skip(state, 1); 637 return value; 638 } 639 640 uint16_t mesh_access_parser_get_u16(mesh_access_parser_state_t * state){ 641 uint16_t value = little_endian_read_16(state->data, 0); 642 mesh_access_parser_skip(state, 2); 643 return value; 644 } 645 646 uint32_t mesh_access_parser_get_u24(mesh_access_parser_state_t * state){ 647 uint32_t value = little_endian_read_24(state->data, 0); 648 mesh_access_parser_skip(state, 3); 649 return value; 650 } 651 652 uint32_t mesh_access_parser_get_u32(mesh_access_parser_state_t * state){ 653 uint32_t value = little_endian_read_32(state->data, 0); 654 mesh_access_parser_skip(state, 4); 655 return value; 656 } 657 658 void mesh_access_parser_get_u128(mesh_access_parser_state_t * state, uint8_t * dest){ 659 reverse_128( state->data, dest); 660 mesh_access_parser_skip(state, 16); 661 } 662 663 void mesh_access_parser_get_label_uuid(mesh_access_parser_state_t * state, uint8_t * dest){ 664 (void)memcpy(dest, state->data, 16); 665 mesh_access_parser_skip(state, 16); 666 } 667 668 void mesh_access_parser_get_key(mesh_access_parser_state_t * state, uint8_t * dest){ 669 (void)memcpy(dest, state->data, 16); 670 mesh_access_parser_skip(state, 16); 671 } 672 673 uint32_t mesh_access_parser_get_model_identifier(mesh_access_parser_state_t * parser){ 674 uint16_t vendor_id = BLUETOOTH_COMPANY_ID_BLUETOOTH_SIG_INC; 675 if (mesh_access_parser_available(parser) == 4){ 676 vendor_id = mesh_access_parser_get_u16(parser); 677 } 678 uint16_t model_id = mesh_access_parser_get_u16(parser); 679 return mesh_model_get_model_identifier(vendor_id, model_id); 680 } 681 682 uint32_t mesh_access_parser_get_sig_model_identifier(mesh_access_parser_state_t * parser){ 683 uint16_t model_id = mesh_access_parser_get_u16(parser); 684 return mesh_model_get_model_identifier(BLUETOOTH_COMPANY_ID_BLUETOOTH_SIG_INC, model_id); 685 } 686 687 uint32_t mesh_access_parser_get_vendor_model_identifier(mesh_access_parser_state_t * parser){ 688 uint16_t vendor_id = mesh_access_parser_get_u16(parser); 689 uint16_t model_id = mesh_access_parser_get_u16(parser); 690 return mesh_model_get_model_identifier(vendor_id, model_id); 691 } 692 693 // Mesh Access Message Builder 694 695 // message builder 696 697 static int mesh_access_setup_opcode(uint8_t * buffer, uint32_t opcode){ 698 if (opcode < 0x100){ 699 buffer[0] = opcode; 700 return 1; 701 } 702 if (opcode < 0x10000){ 703 big_endian_store_16(buffer, 0, opcode); 704 return 2; 705 } 706 buffer[0] = opcode >> 16; 707 little_endian_store_16(buffer, 1, opcode & 0xffff); 708 return 3; 709 } 710 711 mesh_transport_pdu_t * mesh_access_transport_init(uint32_t opcode){ 712 mesh_transport_pdu_t * pdu = mesh_transport_pdu_get(); 713 if (!pdu) return NULL; 714 715 pdu->len = mesh_access_setup_opcode(pdu->data, opcode); 716 pdu->ack_opcode = MESH_ACCESS_OPCODE_NOT_SET; 717 return pdu; 718 } 719 720 void mesh_access_transport_add_uint8(mesh_transport_pdu_t * pdu, uint8_t value){ 721 pdu->data[pdu->len++] = value; 722 } 723 724 void mesh_access_transport_add_uint16(mesh_transport_pdu_t * pdu, uint16_t value){ 725 little_endian_store_16(pdu->data, pdu->len, value); 726 pdu->len += 2; 727 } 728 729 void mesh_access_transport_add_uint24(mesh_transport_pdu_t * pdu, uint32_t value){ 730 little_endian_store_24(pdu->data, pdu->len, value); 731 pdu->len += 3; 732 } 733 734 void mesh_access_transport_add_uint32(mesh_transport_pdu_t * pdu, uint32_t value){ 735 little_endian_store_32(pdu->data, pdu->len, value); 736 pdu->len += 4; 737 } 738 739 void mesh_access_transport_add_label_uuid(mesh_transport_pdu_t * pdu, uint8_t * value){ 740 (void)memcpy(value, pdu->data, 16); 741 pdu->len += 16; 742 } 743 744 void mesh_access_transport_add_model_identifier(mesh_transport_pdu_t * pdu, uint32_t model_identifier){ 745 if (!mesh_model_is_bluetooth_sig(model_identifier)){ 746 mesh_access_transport_add_uint16( pdu, mesh_model_get_vendor_id(model_identifier) ); 747 } 748 mesh_access_transport_add_uint16( pdu, mesh_model_get_model_id(model_identifier) ); 749 } 750 751 // mesh_message_t builder 752 mesh_segmented_pdu_t * mesh_access_message_init(uint32_t opcode, bool segmented, uint8_t num_segments){ 753 btstack_assert(num_segments > 0); 754 btstack_assert(segmented || (num_segments == 1)); 755 756 mesh_segmented_pdu_t * pdu = mesh_message_pdu_get(); 757 if (!pdu) return NULL; 758 759 // TODO: handle segmented messages 760 btstack_assert(segmented == false); 761 762 // use mesh_network_t as before 763 mesh_network_pdu_t * segment = mesh_network_pdu_get(); 764 if (segment == NULL){ 765 mesh_message_pdu_free(pdu); 766 return NULL; 767 } 768 btstack_linked_list_add(&pdu->segments, (btstack_linked_item_t *) segment); 769 770 pdu->len = mesh_access_setup_opcode(&segment->data[10], opcode) + 10; 771 pdu->ack_opcode = MESH_ACCESS_OPCODE_NOT_SET; 772 return pdu; 773 } 774 775 void mesh_access_message_add_uint8(mesh_segmented_pdu_t * pdu, uint8_t value){ 776 // TODO: handle segmented messages 777 mesh_network_pdu_t * segment = (mesh_network_pdu_t *) btstack_linked_list_get_first_item(&pdu->segments); 778 segment->data[pdu->len++] = value; 779 } 780 781 void mesh_access_message_add_uint16(mesh_segmented_pdu_t * pdu, uint16_t value){ 782 // TODO: handle segmented messages 783 mesh_network_pdu_t * segment = (mesh_network_pdu_t *) btstack_linked_list_get_first_item(&pdu->segments); 784 little_endian_store_16(segment->data, pdu->len, value); 785 pdu->len += 2; 786 } 787 788 void mesh_access_message_add_uint24(mesh_segmented_pdu_t * pdu, uint16_t value){ 789 // TODO: handle segmented messages 790 mesh_network_pdu_t * segment = (mesh_network_pdu_t *) btstack_linked_list_get_first_item(&pdu->segments); 791 little_endian_store_24(segment->data, pdu->len, value); 792 pdu->len += 3; 793 } 794 795 void mesh_access_message_add_uint32(mesh_segmented_pdu_t * pdu, uint16_t value){ 796 // TODO: handle segmented messages 797 mesh_network_pdu_t * segment = (mesh_network_pdu_t *) btstack_linked_list_get_first_item(&pdu->segments); 798 little_endian_store_32(segment->data, pdu->len, value); 799 pdu->len += 4; 800 } 801 802 void mesh_access_message_add_model_identifier(mesh_segmented_pdu_t * pdu, uint32_t model_identifier){ 803 if (mesh_model_is_bluetooth_sig(model_identifier)){ 804 mesh_access_message_add_uint16( pdu, mesh_model_get_model_id(model_identifier) ); 805 } else { 806 mesh_access_message_add_uint32( pdu, model_identifier ); 807 } 808 } 809 810 // access message template 811 mesh_segmented_pdu_t * mesh_access_setup_message(bool segmented, const mesh_access_message_t *message_template, ...){ 812 btstack_assert(segmented == false); 813 814 // TODO: handle segmented messages 815 mesh_segmented_pdu_t * message_pdu = mesh_access_message_init(message_template->opcode, segmented, 1); 816 if (!message_pdu) return NULL; 817 818 va_list argptr; 819 va_start(argptr, message_template); 820 821 // add params 822 const char * format = message_template->format; 823 uint16_t word; 824 uint32_t longword; 825 while (*format){ 826 switch (*format){ 827 case '1': 828 word = va_arg(argptr, int); // minimal va_arg is int: 2 bytes on 8+16 bit CPUs 829 mesh_access_message_add_uint8( message_pdu, word); 830 break; 831 case '2': 832 word = va_arg(argptr, int); // minimal va_arg is int: 2 bytes on 8+16 bit CPUs 833 mesh_access_message_add_uint16( message_pdu, word); 834 break; 835 case '3': 836 longword = va_arg(argptr, uint32_t); 837 mesh_access_message_add_uint24( message_pdu, longword); 838 break; 839 case '4': 840 longword = va_arg(argptr, uint32_t); 841 mesh_access_message_add_uint32( message_pdu, longword); 842 mesh_access_message_add_uint32( message_pdu, longword); 843 break; 844 case 'm': 845 longword = va_arg(argptr, uint32_t); 846 mesh_access_message_add_model_identifier( message_pdu, longword); 847 break; 848 default: 849 log_error("Unsupported mesh message format specifier '%c", *format); 850 break; 851 } 852 format++; 853 } 854 855 va_end(argptr); 856 857 return message_pdu; 858 } 859 860 mesh_transport_pdu_t * mesh_access_setup_segmented_message(const mesh_access_message_t *message_template, ...){ 861 mesh_transport_pdu_t * transport_pdu = mesh_access_transport_init(message_template->opcode); 862 if (!transport_pdu) return NULL; 863 864 va_list argptr; 865 va_start(argptr, message_template); 866 867 // add params 868 const char * format = message_template->format; 869 uint16_t word; 870 uint32_t longword; 871 uint8_t * ptr; 872 while (*format){ 873 switch (*format++){ 874 case '1': 875 word = va_arg(argptr, int); // minimal va_arg is int: 2 bytes on 8+16 bit CPUs 876 mesh_access_transport_add_uint8( transport_pdu, word); 877 break; 878 case '2': 879 word = va_arg(argptr, int); // minimal va_arg is int: 2 bytes on 8+16 bit CPUs 880 mesh_access_transport_add_uint16( transport_pdu, word); 881 break; 882 case '3': 883 longword = va_arg(argptr, uint32_t); 884 mesh_access_transport_add_uint24( transport_pdu, longword); 885 break; 886 case '4': 887 longword = va_arg(argptr, uint32_t); 888 mesh_access_transport_add_uint32( transport_pdu, longword); 889 break; 890 case 'P': // 16 byte, eg LabelUUID, in network endianess 891 ptr = va_arg(argptr, uint8_t *); 892 mesh_access_transport_add_label_uuid( transport_pdu, ptr); 893 break; 894 case 'm': 895 longword = va_arg(argptr, uint32_t); 896 mesh_access_transport_add_model_identifier( transport_pdu, longword); 897 break; 898 default: 899 break; 900 } 901 } 902 903 va_end(argptr); 904 905 return transport_pdu; 906 } 907 908 909 static const mesh_operation_t * mesh_model_lookup_operation_by_opcode(mesh_model_t * model, uint32_t opcode){ 910 // find opcode in table 911 const mesh_operation_t * operation = model->operations; 912 if (operation == NULL) return NULL; 913 for ( ; operation->handler != NULL ; operation++){ 914 if (operation->opcode != opcode) continue; 915 return operation; 916 } 917 return NULL; 918 } 919 920 static const mesh_operation_t * mesh_model_lookup_operation(mesh_model_t * model, mesh_pdu_t * pdu){ 921 922 uint32_t opcode = 0; 923 uint16_t opcode_size = 0; 924 int ok = mesh_access_pdu_get_opcode( pdu, &opcode, &opcode_size); 925 if (!ok) return NULL; 926 927 uint16_t len = mesh_pdu_len(pdu); 928 929 // find opcode in table 930 const mesh_operation_t * operation = model->operations; 931 if (operation == NULL) return NULL; 932 for ( ; operation->handler != NULL ; operation++){ 933 if (operation->opcode != opcode) continue; 934 if ((opcode_size + operation->minimum_length) > len) continue; 935 return operation; 936 } 937 return NULL; 938 } 939 940 static int mesh_access_validate_appkey_index(mesh_model_t * model, uint16_t appkey_index){ 941 // DeviceKey is valid for all models 942 if (appkey_index == MESH_DEVICE_KEY_INDEX) return 1; 943 // check if AppKey that is bound to this particular model 944 return mesh_model_contains_appkey(model, appkey_index); 945 } 946 947 // decrease use count and report as free if done 948 void mesh_access_message_processed(mesh_pdu_t * pdu){ 949 if (mesh_access_received_pdu_refcount > 0){ 950 mesh_access_received_pdu_refcount--; 951 } 952 if (mesh_access_received_pdu_refcount == 0){ 953 mesh_upper_transport_message_processed_by_higher_layer(pdu); 954 } 955 } 956 957 static void mesh_access_message_process_handler(mesh_pdu_t * pdu){ 958 959 // init use count 960 mesh_access_received_pdu_refcount = 1; 961 962 // get opcode and size 963 uint32_t opcode = 0; 964 uint16_t opcode_size = 0; 965 966 int ok = mesh_access_pdu_get_opcode( pdu, &opcode, &opcode_size); 967 if (!ok) { 968 mesh_access_message_processed(pdu); 969 return; 970 } 971 972 uint16_t len = mesh_pdu_len(pdu); 973 printf("MESH Access Message, Opcode = %x: ", opcode); 974 printf_hexdump(mesh_pdu_data(pdu), len); 975 976 uint16_t src = mesh_pdu_src(pdu); 977 uint16_t dst = mesh_pdu_dst(pdu); 978 uint16_t appkey_index = mesh_pdu_appkey_index(pdu); 979 if (mesh_network_address_unicast(dst)){ 980 // loookup element by unicast address 981 mesh_element_t * element = mesh_node_element_for_unicast_address(dst); 982 if (element != NULL){ 983 // iterate over models, look for operation 984 mesh_model_iterator_t model_it; 985 mesh_model_iterator_init(&model_it, element); 986 while (mesh_model_iterator_has_next(&model_it)){ 987 mesh_model_t * model = mesh_model_iterator_next(&model_it); 988 // find opcode in table 989 const mesh_operation_t * operation = mesh_model_lookup_operation(model, pdu); 990 if (operation == NULL) continue; 991 if (mesh_access_validate_appkey_index(model, appkey_index) == 0) continue; 992 mesh_access_acknowledged_received(src, opcode); 993 mesh_access_received_pdu_refcount++; 994 operation->handler(model, pdu); 995 } 996 } 997 } 998 else if (mesh_network_address_group(dst)){ 999 1000 // handle fixed group address 1001 if (dst >= 0xff00){ 1002 int deliver_to_primary_element = 1; 1003 switch (dst){ 1004 case MESH_ADDRESS_ALL_PROXIES: 1005 if (mesh_foundation_gatt_proxy_get() == 1){ 1006 deliver_to_primary_element = 1; 1007 } 1008 break; 1009 case MESH_ADDRESS_ALL_FRIENDS: 1010 // TODO: not implemented 1011 break; 1012 case MESH_ADDRESS_ALL_RELAYS: 1013 if (mesh_foundation_relay_get() == 1){ 1014 deliver_to_primary_element = 1; 1015 } 1016 break; 1017 case MESH_ADDRESS_ALL_NODES: 1018 deliver_to_primary_element = 1; 1019 break; 1020 default: 1021 break; 1022 } 1023 if (deliver_to_primary_element){ 1024 mesh_model_iterator_t model_it; 1025 mesh_model_iterator_init(&model_it, mesh_node_get_primary_element()); 1026 while (mesh_model_iterator_has_next(&model_it)){ 1027 mesh_model_t * model = mesh_model_iterator_next(&model_it); 1028 // find opcode in table 1029 const mesh_operation_t * operation = mesh_model_lookup_operation(model, pdu); 1030 if (operation == NULL) continue; 1031 if (mesh_access_validate_appkey_index(model, appkey_index) == 0) continue; 1032 mesh_access_acknowledged_received(src, opcode); 1033 mesh_access_received_pdu_refcount++; 1034 operation->handler(model, pdu); 1035 } 1036 } 1037 } 1038 else { 1039 // iterate over all elements / models, check subscription list 1040 mesh_element_iterator_t it; 1041 mesh_element_iterator_init(&it); 1042 while (mesh_element_iterator_has_next(&it)){ 1043 mesh_element_t * element = (mesh_element_t *) mesh_element_iterator_next(&it); 1044 mesh_model_iterator_t model_it; 1045 mesh_model_iterator_init(&model_it, element); 1046 while (mesh_model_iterator_has_next(&model_it)){ 1047 mesh_model_t * model = mesh_model_iterator_next(&model_it); 1048 if (mesh_model_contains_subscription(model, dst)){ 1049 // find opcode in table 1050 const mesh_operation_t * operation = mesh_model_lookup_operation(model, pdu); 1051 if (operation == NULL) continue; 1052 if (mesh_access_validate_appkey_index(model, appkey_index) == 0) continue; 1053 mesh_access_acknowledged_received(src, opcode); 1054 mesh_access_received_pdu_refcount++; 1055 operation->handler(model, pdu); 1056 } 1057 } 1058 } 1059 } 1060 } 1061 1062 // we're done 1063 mesh_access_message_processed(pdu); 1064 } 1065 1066 // Mesh Model Publication 1067 static btstack_timer_source_t mesh_access_publication_timer; 1068 1069 static uint32_t mesh_model_publication_retransmit_count(uint8_t retransmit){ 1070 return retransmit & 0x07u; 1071 } 1072 1073 static uint32_t mesh_model_publication_retransmission_period_ms(uint8_t retransmit){ 1074 return ((uint32_t)((retransmit >> 3) + 1)) * 50; 1075 } 1076 1077 static void mesh_model_publication_setup_publication(mesh_publication_model_t * publication_model, uint32_t now){ 1078 1079 // set retransmit counter 1080 publication_model->retransmit_count = mesh_model_publication_retransmit_count(publication_model->retransmit); 1081 1082 // schedule next publication or retransmission 1083 uint32_t publication_period_ms = mesh_access_time_gdtt2ms(publication_model->period) >> publication_model->period_divisor; 1084 1085 // set next publication 1086 if (publication_period_ms != 0){ 1087 publication_model->next_publication_ms = now + publication_period_ms; 1088 publication_model->state = MESH_MODEL_PUBLICATION_STATE_W4_PUBLICATION_MS; 1089 } else { 1090 publication_model->state = MESH_MODEL_PUBLICATION_STATE_IDLE; 1091 } 1092 } 1093 1094 // assumes retransmit_count is valid 1095 static void mesh_model_publication_setup_retransmission(mesh_publication_model_t * publication_model, uint32_t now){ 1096 uint32_t publication_period_ms = mesh_access_time_gdtt2ms(publication_model->period) >> publication_model->period_divisor; 1097 1098 // retransmission done 1099 if (publication_model->retransmit_count == 0) { 1100 // wait for next main event if periodic and retransmission complete 1101 if (publication_period_ms != 0){ 1102 publication_model->state = MESH_MODEL_PUBLICATION_STATE_W4_PUBLICATION_MS; 1103 } else { 1104 publication_model->state = MESH_MODEL_PUBLICATION_STATE_IDLE; 1105 } 1106 return; 1107 } 1108 1109 // calc next retransmit time 1110 uint32_t retransmission_period_ms = mesh_model_publication_retransmission_period_ms(publication_model->retransmit) >> publication_model->period_divisor; 1111 uint32_t retransmission_ms = now + retransmission_period_ms; 1112 1113 // check next publication timeout is before next retransmission 1114 if (publication_period_ms != 0){ 1115 if (btstack_time_delta(retransmission_ms, publication_model->next_publication_ms) > 0) return; 1116 } 1117 1118 // schedule next retransmission 1119 publication_model->next_retransmit_ms = retransmission_ms; 1120 publication_model->state = MESH_MODEL_PUBLICATION_STATE_W4_RETRANSMIT_MS; 1121 } 1122 1123 static void mesh_model_publication_publish_now_model(mesh_model_t * mesh_model){ 1124 mesh_publication_model_t * publication_model = mesh_model->publication_model; 1125 if (publication_model == NULL) return; 1126 if (publication_model->publish_state_fn == NULL) return; 1127 uint16_t dest = publication_model->address; 1128 if (dest == MESH_ADDRESS_UNSASSIGNED) return; 1129 uint16_t appkey_index = publication_model->appkey_index; 1130 mesh_transport_key_t * app_key = mesh_transport_key_get(appkey_index); 1131 if (app_key == NULL) return; 1132 1133 // compose message 1134 mesh_pdu_t * pdu = (*publication_model->publish_state_fn)(mesh_model); 1135 if (pdu == NULL) return; 1136 1137 // handle ttl = default 1138 uint8_t ttl = publication_model->ttl; 1139 if (ttl == 0xff){ 1140 ttl = mesh_foundation_default_ttl_get(); 1141 } 1142 1143 mesh_upper_transport_setup_access_pdu_header(pdu, app_key->netkey_index, appkey_index, ttl, mesh_access_get_element_address(mesh_model), dest, 0); 1144 mesh_access_send_unacknowledged_pdu(pdu); 1145 } 1146 1147 static void mesh_model_publication_run(btstack_timer_source_t * ts){ 1148 1149 uint32_t now = btstack_run_loop_get_time_ms(); 1150 1151 // iterate over elements and models and handle time-based transitions 1152 mesh_element_iterator_t element_it; 1153 mesh_element_iterator_init(&element_it); 1154 while (mesh_element_iterator_has_next(&element_it)){ 1155 mesh_element_t * element = mesh_element_iterator_next(&element_it); 1156 mesh_model_iterator_t model_it; 1157 mesh_model_iterator_init(&model_it, element); 1158 while (mesh_model_iterator_has_next(&model_it)){ 1159 mesh_model_t * mesh_model = mesh_model_iterator_next(&model_it); 1160 mesh_publication_model_t * publication_model = mesh_model->publication_model; 1161 if (publication_model == NULL) continue; 1162 1163 // check if either timer fired 1164 switch (publication_model->state){ 1165 case MESH_MODEL_PUBLICATION_STATE_W4_PUBLICATION_MS: 1166 if (btstack_time_delta(publication_model->next_publication_ms, now) > 0) break; 1167 publication_model->state = MESH_MODEL_PUBLICATION_STATE_PUBLICATION_READY; 1168 break; 1169 case MESH_MODEL_PUBLICATION_STATE_W4_RETRANSMIT_MS: 1170 if (btstack_time_delta(publication_model->next_retransmit_ms, now) > 0) break; 1171 publication_model->state = MESH_MODEL_PUBLICATION_STATE_RETRANSMIT_READY; 1172 break; 1173 default: 1174 break; 1175 } 1176 1177 switch (publication_model->state){ 1178 case MESH_MODEL_PUBLICATION_STATE_PUBLICATION_READY: 1179 // schedule next publication and retransmission 1180 mesh_model_publication_setup_publication(publication_model, now); 1181 mesh_model_publication_setup_retransmission(publication_model, now); 1182 mesh_model_publication_publish_now_model(mesh_model); 1183 break; 1184 case MESH_MODEL_PUBLICATION_STATE_RETRANSMIT_READY: 1185 // schedule next retransmission 1186 publication_model->retransmit_count--; 1187 mesh_model_publication_setup_retransmission(publication_model, now); 1188 mesh_model_publication_publish_now_model(mesh_model); 1189 break; 1190 default: 1191 break; 1192 } 1193 } 1194 } 1195 1196 int32_t next_timeout_ms = 0; 1197 mesh_element_iterator_init(&element_it); 1198 while (mesh_element_iterator_has_next(&element_it)){ 1199 mesh_element_t * element = mesh_element_iterator_next(&element_it); 1200 mesh_model_iterator_t model_it; 1201 mesh_model_iterator_init(&model_it, element); 1202 while (mesh_model_iterator_has_next(&model_it)){ 1203 mesh_model_t * mesh_model = mesh_model_iterator_next(&model_it); 1204 mesh_publication_model_t * publication_model = mesh_model->publication_model; 1205 if (publication_model == NULL) continue; 1206 1207 // schedule next 1208 int32_t timeout_delta_ms; 1209 switch (publication_model->state){ 1210 case MESH_MODEL_PUBLICATION_STATE_W4_PUBLICATION_MS: 1211 timeout_delta_ms = btstack_time_delta(publication_model->next_publication_ms, now); 1212 if (next_timeout_ms == 0 || timeout_delta_ms < next_timeout_ms){ 1213 next_timeout_ms = timeout_delta_ms; 1214 } 1215 break; 1216 case MESH_MODEL_PUBLICATION_STATE_W4_RETRANSMIT_MS: 1217 timeout_delta_ms = btstack_time_delta(publication_model->next_retransmit_ms, now); 1218 if (next_timeout_ms == 0 || timeout_delta_ms < next_timeout_ms){ 1219 next_timeout_ms = timeout_delta_ms; 1220 } 1221 break; 1222 default: 1223 break; 1224 } 1225 } 1226 } 1227 1228 // remove current timer if active 1229 if (ts == NULL){ 1230 btstack_run_loop_remove_timer(&mesh_access_publication_timer); 1231 1232 } 1233 1234 // new timeout? 1235 if (next_timeout_ms == 0) return; 1236 1237 // set timer 1238 btstack_run_loop_set_timer(&mesh_access_publication_timer, next_timeout_ms); 1239 btstack_run_loop_set_timer_handler(&mesh_access_publication_timer, mesh_model_publication_run); 1240 btstack_run_loop_add_timer(&mesh_access_publication_timer); 1241 } 1242 1243 void mesh_model_publication_start(mesh_model_t * mesh_model){ 1244 mesh_publication_model_t * publication_model = mesh_model->publication_model; 1245 if (publication_model == NULL) return; 1246 1247 // publish right away 1248 publication_model->state = MESH_MODEL_PUBLICATION_STATE_PUBLICATION_READY; 1249 mesh_model_publication_run(NULL); 1250 } 1251 1252 void mesh_model_publication_stop(mesh_model_t * mesh_model){ 1253 mesh_publication_model_t * publication_model = mesh_model->publication_model; 1254 if (publication_model == NULL) return; 1255 1256 // reset state 1257 publication_model->state = MESH_MODEL_PUBLICATION_STATE_IDLE; 1258 } 1259 1260 void mesh_access_state_changed(mesh_model_t * mesh_model){ 1261 mesh_publication_model_t * publication_model = mesh_model->publication_model; 1262 if (publication_model == NULL) return; 1263 publication_model->state = MESH_MODEL_PUBLICATION_STATE_PUBLICATION_READY; 1264 mesh_model_publication_run(NULL); 1265 } 1266 1267