Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 | /* hfp_hf.c - Hands free Profile - Handsfree side handling */ /* * Copyright (c) 2015-2016 Intel Corporation * * SPDX-License-Identifier: Apache-2.0 */ #include <zephyr.h> #include <errno.h> #include <atomic.h> #include <misc/byteorder.h> #include <misc/util.h> #include <misc/printk.h> #define BT_DBG_ENABLED IS_ENABLED(CONFIG_BLUETOOTH_DEBUG_HFP_HF) #include <bluetooth/log.h> #include <bluetooth/conn.h> #include <bluetooth/rfcomm.h> #include <bluetooth/hfp_hf.h> #include "l2cap_internal.h" #include "rfcomm_internal.h" #include "at.h" #include "hfp_internal.h" #define MAX_IND_STR_LEN 17 struct bt_hfp_hf_cb *bt_hf; NET_BUF_POOL_DEFINE(hf_pool, CONFIG_BLUETOOTH_MAX_CONN + 1, BT_RFCOMM_BUF_SIZE(BLUETOOTH_HF_CLIENT_MAX_PDU), BT_BUF_USER_DATA_MIN, NULL); static struct bt_hfp_hf bt_hfp_hf_pool[CONFIG_BLUETOOTH_MAX_CONN]; /* The order should follow the enum hfp_hf_ag_indicators */ static const struct { char *name; uint32_t min; uint32_t max; } ag_ind[] = { {"service", 0, 1}, /* HF_SERVICE_IND */ {"call", 0, 1}, /* HF_CALL_IND */ {"callsetup", 0, 3}, /* HF_CALL_SETUP_IND */ {"callheld", 0, 2}, /* HF_CALL_HELD_IND */ {"signal", 0, 5}, /* HF_SINGNAL_IND */ {"roam", 0, 1}, /* HF_ROAM_IND */ {"battchg", 0, 5} /* HF_BATTERY_IND */ }; void hf_slc_error(struct at_client *hf_at) { struct bt_hfp_hf *hf = CONTAINER_OF(hf_at, struct bt_hfp_hf, at); int err; BT_ERR("SLC error: disconnecting"); err = bt_rfcomm_dlc_disconnect(&hf->rfcomm_dlc); if (err) { BT_ERR("Rfcomm: Unable to disconnect :%d", -err); } } int hfp_hf_send_cmd(struct bt_hfp_hf *hf, at_resp_cb_t resp, at_finish_cb_t finish, const char *format, ...) { struct net_buf *buf; va_list vargs; int ret; /* register the callbacks */ at_register(&hf->at, resp, finish); buf = bt_rfcomm_create_pdu(&hf_pool); if (!buf) { BT_ERR("No Buffers!"); return -ENOMEM; } va_start(vargs, format); ret = vsnprintk(buf->data, (net_buf_tailroom(buf) - 1), format, vargs); if (ret < 0) { BT_ERR("Unable to format variable arguments"); return ret; } va_end(vargs); net_buf_add(buf, ret); net_buf_add_u8(buf, '\r'); ret = bt_rfcomm_dlc_send(&hf->rfcomm_dlc, buf); if (ret < 0) { BT_ERR("Rfcomm send error :(%d)", ret); return ret; } return 0; } int brsf_handle(struct at_client *hf_at) { struct bt_hfp_hf *hf = CONTAINER_OF(hf_at, struct bt_hfp_hf, at); uint32_t val; int ret; ret = at_get_number(hf_at, &val); if (ret < 0) { BT_ERR("Error getting value"); return ret; } hf->ag_features = val; return 0; } int brsf_resp(struct at_client *hf_at, struct net_buf *buf) { int err; BT_DBG(""); err = at_parse_cmd_input(hf_at, buf, "BRSF", brsf_handle, AT_CMD_TYPE_NORMAL); if (err < 0) { /* Returning negative value is avoided before SLC connection * established. */ BT_ERR("Error parsing CMD input"); hf_slc_error(hf_at); } return 0; } static void cind_handle_values(struct at_client *hf_at, uint32_t index, char *name, uint32_t min, uint32_t max) { struct bt_hfp_hf *hf = CONTAINER_OF(hf_at, struct bt_hfp_hf, at); int i; BT_DBG("index: %u, name: %s, min: %u, max:%u", index, name, min, max); for (i = 0; i < ARRAY_SIZE(ag_ind); i++) { if (strcmp(name, ag_ind[i].name) != 0) { continue; } if (min != ag_ind[i].min || max != ag_ind[i].max) { BT_ERR("%s indicator min/max value not matching", name); } hf->ind_table[index] = i; break; } } int cind_handle(struct at_client *hf_at) { uint32_t index = 0; /* Parsing Example: CIND: ("call",(0,1)) etc.. */ while (at_has_next_list(hf_at)) { char name[MAX_IND_STR_LEN]; uint32_t min, max; if (at_open_list(hf_at) < 0) { BT_ERR("Could not get open list"); goto error; } if (at_list_get_string(hf_at, name, sizeof(name)) < 0) { BT_ERR("Could not get string"); goto error; } if (at_open_list(hf_at) < 0) { BT_ERR("Could not get open list"); goto error; } if (at_list_get_range(hf_at, &min, &max) < 0) { BT_ERR("Could not get range"); goto error; } if (at_close_list(hf_at) < 0) { BT_ERR("Could not get close list"); goto error; } if (at_close_list(hf_at) < 0) { BT_ERR("Could not get close list"); goto error; } cind_handle_values(hf_at, index, name, min, max); index++; } return 0; error: BT_ERR("Error on CIND response"); hf_slc_error(hf_at); return -EINVAL; } int cind_resp(struct at_client *hf_at, struct net_buf *buf) { int err; err = at_parse_cmd_input(hf_at, buf, "CIND", cind_handle, AT_CMD_TYPE_NORMAL); if (err < 0) { BT_ERR("Error parsing CMD input"); hf_slc_error(hf_at); } return 0; } void ag_indicator_handle_values(struct at_client *hf_at, uint32_t index, uint32_t value) { struct bt_hfp_hf *hf = CONTAINER_OF(hf_at, struct bt_hfp_hf, at); struct bt_conn *conn = hf->rfcomm_dlc.session->br_chan.chan.conn; BT_DBG("Index :%u, Value :%u", index, value); if (index >= ARRAY_SIZE(ag_ind)) { BT_ERR("Max only %lu indicators are supported", ARRAY_SIZE(ag_ind)); return; } if (value > ag_ind[hf->ind_table[index]].max || value < ag_ind[hf->ind_table[index]].min) { BT_ERR("Indicators out of range - value: %u", value); return; } switch (hf->ind_table[index]) { case HF_SERVICE_IND: if (bt_hf->service) { bt_hf->service(conn, value); } break; case HF_CALL_IND: if (bt_hf->call) { bt_hf->call(conn, value); } break; case HF_CALL_SETUP_IND: if (bt_hf->call_setup) { bt_hf->call_setup(conn, value); } break; case HF_CALL_HELD_IND: if (bt_hf->call_held) { bt_hf->call_held(conn, value); } break; case HF_SINGNAL_IND: if (bt_hf->signal) { bt_hf->signal(conn, value); } break; case HF_ROAM_IND: if (bt_hf->roam) { bt_hf->roam(conn, value); } break; case HF_BATTERY_IND: if (bt_hf->battery) { bt_hf->battery(conn, value); } break; default: BT_ERR("Unknown AG indicator"); break; } } int cind_status_handle(struct at_client *hf_at) { uint32_t index = 0; while (at_has_next_list(hf_at)) { uint32_t value; int ret; ret = at_get_number(hf_at, &value); if (ret < 0) { BT_ERR("could not get the value"); return ret; } ag_indicator_handle_values(hf_at, index, value); index++; } return 0; } int cind_status_resp(struct at_client *hf_at, struct net_buf *buf) { int err; err = at_parse_cmd_input(hf_at, buf, "CIND", cind_status_handle, AT_CMD_TYPE_NORMAL); if (err < 0) { BT_ERR("Error parsing CMD input"); hf_slc_error(hf_at); } return 0; } int ciev_handle(struct at_client *hf_at) { uint32_t index, value; int ret; ret = at_get_number(hf_at, &index); if (ret < 0) { BT_ERR("could not get the Index"); return ret; } /* The first element of the list shall have 1 */ if (!index) { BT_ERR("Invalid index value '0'"); return 0; } ret = at_get_number(hf_at, &value); if (ret < 0) { BT_ERR("could not get the value"); return ret; } ag_indicator_handle_values(hf_at, (index - 1), value); return 0; } int unsolicited_cb(struct at_client *hf_at, struct net_buf *buf) { if (!at_parse_cmd_input(hf_at, buf, "CIEV", ciev_handle, AT_CMD_TYPE_UNSOLICITED)) { return 0; } return -EINVAL; } int cmee_finish(struct at_client *hf_at, enum at_result result) { if (result != AT_RESULT_OK) { BT_ERR("SLC Connection ERROR in response"); return -EINVAL; } return 0; } static void slc_completed(struct at_client *hf_at) { struct bt_hfp_hf *hf = CONTAINER_OF(hf_at, struct bt_hfp_hf, at); struct bt_conn *conn = hf->rfcomm_dlc.session->br_chan.chan.conn; if (bt_hf->connected) { bt_hf->connected(conn); } if (hfp_hf_send_cmd(hf, NULL, cmee_finish, "AT+CMEE=1") < 0) { BT_ERR("Error Sending AT+CMEE"); } } int cmer_finish(struct at_client *hf_at, enum at_result result) { if (result != AT_RESULT_OK) { BT_ERR("SLC Connection ERROR in response"); hf_slc_error(hf_at); return -EINVAL; } slc_completed(hf_at); return 0; } int cind_status_finish(struct at_client *hf_at, enum at_result result) { struct bt_hfp_hf *hf = CONTAINER_OF(hf_at, struct bt_hfp_hf, at); int err; if (result != AT_RESULT_OK) { BT_ERR("SLC Connection ERROR in response"); hf_slc_error(hf_at); return -EINVAL; } at_register_unsolicited(hf_at, unsolicited_cb); err = hfp_hf_send_cmd(hf, NULL, cmer_finish, "AT+CMER=3,0,0,1"); if (err < 0) { hf_slc_error(hf_at); return err; } return 0; } int cind_finish(struct at_client *hf_at, enum at_result result) { struct bt_hfp_hf *hf = CONTAINER_OF(hf_at, struct bt_hfp_hf, at); int err; if (result != AT_RESULT_OK) { BT_ERR("SLC Connection ERROR in response"); hf_slc_error(hf_at); return -EINVAL; } err = hfp_hf_send_cmd(hf, cind_status_resp, cind_status_finish, "AT+CIND?"); if (err < 0) { hf_slc_error(hf_at); return err; } return 0; } int brsf_finish(struct at_client *hf_at, enum at_result result) { struct bt_hfp_hf *hf = CONTAINER_OF(hf_at, struct bt_hfp_hf, at); int err; if (result != AT_RESULT_OK) { BT_ERR("SLC Connection ERROR in response"); hf_slc_error(hf_at); return -EINVAL; } err = hfp_hf_send_cmd(hf, cind_resp, cind_finish, "AT+CIND=?"); if (err < 0) { hf_slc_error(hf_at); return err; } return 0; } int hf_slc_establish(struct bt_hfp_hf *hf) { int err; BT_DBG(""); err = hfp_hf_send_cmd(hf, brsf_resp, brsf_finish, "AT+BRSF=%u", hf->hf_features); if (err < 0) { hf_slc_error(&hf->at); return err; } return 0; } static void hfp_hf_connected(struct bt_rfcomm_dlc *dlc) { struct bt_hfp_hf *hf = CONTAINER_OF(dlc, struct bt_hfp_hf, rfcomm_dlc); BT_DBG("hf connected"); BT_ASSERT(hf); hf_slc_establish(hf); } static void hfp_hf_disconnected(struct bt_rfcomm_dlc *dlc) { struct bt_conn *conn = dlc->session->br_chan.chan.conn; BT_DBG("hf disconnected!"); if (bt_hf->disconnected) { bt_hf->disconnected(conn); } } static void hfp_hf_recv(struct bt_rfcomm_dlc *dlc, struct net_buf *buf) { struct bt_hfp_hf *hf = CONTAINER_OF(dlc, struct bt_hfp_hf, rfcomm_dlc); if (at_parse_input(&hf->at, buf) < 0) { BT_ERR("Parsing failed"); } } static int bt_hfp_hf_accept(struct bt_conn *conn, struct bt_rfcomm_dlc **dlc) { int i; static struct bt_rfcomm_dlc_ops ops = { .connected = hfp_hf_connected, .disconnected = hfp_hf_disconnected, .recv = hfp_hf_recv, }; BT_DBG("conn %p", conn); for (i = 0; i < ARRAY_SIZE(bt_hfp_hf_pool); i++) { struct bt_hfp_hf *hf = &bt_hfp_hf_pool[i]; int j; if (hf->rfcomm_dlc.session) { continue; } hf->at.buf = hf->hf_buffer; hf->at.buf_max_len = HF_MAX_BUF_LEN; hf->rfcomm_dlc.ops = &ops; hf->rfcomm_dlc.mtu = BLUETOOTH_HFP_MAX_MTU; *dlc = &hf->rfcomm_dlc; /* Set the supported features*/ hf->hf_features = BT_HFP_HF_SUPPORTED_FEATURES; for (j = 0; j < HF_MAX_AG_INDICATORS; j++) { hf->ind_table[j] = -1; } return 0; } BT_ERR("Unable to establish HF connection (%p)", conn); return -ENOMEM; } static void hfp_hf_init(void) { static struct bt_rfcomm_server chan = { .channel = BT_RFCOMM_CHAN_HFP_HF, .accept = bt_hfp_hf_accept, }; bt_rfcomm_server_register(&chan); } int bt_hfp_hf_register(struct bt_hfp_hf_cb *cb) { if (!cb) { return -EINVAL; } if (bt_hf) { return -EALREADY; } bt_hf = cb; hfp_hf_init(); return 0; } |