1 /*
2 * Copyright (c) 2019 Bose Corporation
3 * Copyright (c) 2020-2025 Nordic Semiconductor ASA
4 *
5 * SPDX-License-Identifier: Apache-2.0
6 */
7
8 #include <stdbool.h>
9 #include <stddef.h>
10 #include <stdint.h>
11
12 #include <zephyr/autoconf.h>
13 #include <zephyr/bluetooth/addr.h>
14 #include <zephyr/bluetooth/audio/audio.h>
15 #include <zephyr/bluetooth/audio/bap.h>
16 #include <zephyr/bluetooth/audio/csip.h>
17 #include <zephyr/bluetooth/audio/tmap.h>
18 #include <zephyr/bluetooth/bluetooth.h>
19 #include <zephyr/bluetooth/byteorder.h>
20 #include <zephyr/bluetooth/conn.h>
21 #include <zephyr/bluetooth/gap.h>
22 #include <zephyr/bluetooth/uuid.h>
23 #include <zephyr/kernel.h>
24 #include <zephyr/net_buf.h>
25 #include <zephyr/sys/__assert.h>
26 #include <zephyr/sys/atomic_types.h>
27 #include <zephyr/sys/printk.h>
28 #include <zephyr/sys/util.h>
29 #include <zephyr/sys/util_macro.h>
30
31 #include "bs_cmd_line.h"
32 #include "bs_dynargs.h"
33 #include "bs_pc_backchannel.h"
34 #include "posix_native_task.h"
35 #include "bs_types.h"
36 #include "bsim_args_runner.h"
37 #include "bstests.h"
38 #include "common.h"
39
40 extern enum bst_result_t bst_result;
41 struct bt_conn *default_conn;
42 atomic_t flag_connected;
43 atomic_t flag_disconnected;
44 atomic_t flag_conn_updated;
45 atomic_t flag_audio_received;
46 volatile bt_security_t security_level;
47 #if defined(CONFIG_BT_CSIP_SET_MEMBER)
48 uint8_t csip_rsi[BT_CSIP_RSI_SIZE];
49 #endif /* CONFIG_BT_CSIP_SET_MEMBER */
50
51 static const struct bt_data connectable_ad[] = {
52 BT_DATA_BYTES(BT_DATA_FLAGS, (BT_LE_AD_GENERAL | BT_LE_AD_NO_BREDR)),
53 BT_DATA(BT_DATA_NAME_COMPLETE, CONFIG_BT_DEVICE_NAME, sizeof(CONFIG_BT_DEVICE_NAME) - 1),
54 BT_DATA_BYTES(BT_DATA_UUID16_SOME, BT_UUID_16_ENCODE(BT_UUID_ASCS_VAL),
55 BT_UUID_16_ENCODE(BT_UUID_CAS_VAL)),
56 BT_DATA_BYTES(BT_DATA_UUID16_ALL, BT_UUID_16_ENCODE(BT_UUID_BASS_VAL),
57 BT_UUID_16_ENCODE(BT_UUID_PACS_VAL)),
58 #if defined(CONFIG_BT_CAP_ACCEPTOR)
59 BT_DATA_BYTES(BT_DATA_SVC_DATA16, BT_UUID_16_ENCODE(BT_UUID_CAS_VAL),
60 BT_AUDIO_UNICAST_ANNOUNCEMENT_TARGETED),
61 #endif /* CONFIG_BT_CAP_ACCEPTOR */
62 #if defined(CONFIG_BT_BAP_UNICAST_SERVER)
63 BT_DATA_BYTES(BT_DATA_SVC_DATA16, BT_UUID_16_ENCODE(BT_UUID_ASCS_VAL),
64 BT_AUDIO_UNICAST_ANNOUNCEMENT_TARGETED, BT_BYTES_LIST_LE16(SINK_CONTEXT),
65 BT_BYTES_LIST_LE16(SOURCE_CONTEXT), 0x00,
66 /* Metadata length */),
67 #endif /* CONFIG_BT_BAP_UNICAST_SERVER */
68 #if defined(CONFIG_BT_BAP_SCAN_DELEGATOR)
69 BT_DATA_BYTES(BT_DATA_SVC_DATA16, BT_UUID_16_ENCODE(BT_UUID_BASS_VAL)),
70 #endif /* CONFIG_BT_BAP_SCAN_DELEGATOR */
71 #if defined(CONFIG_BT_CSIP_SET_MEMBER)
72 BT_DATA(BT_DATA_CSIS_RSI, csip_rsi, BT_CSIP_RSI_SIZE),
73 #endif /* CONFIG_BT_CSIP_SET_MEMBER */
74 #if defined(CONFIG_BT_TMAP)
75 BT_DATA_BYTES(BT_DATA_SVC_DATA16, BT_UUID_16_ENCODE(BT_UUID_TMAS_VAL),
76 BT_UUID_16_ENCODE(TMAP_ROLE_SUPPORTED)),
77 #endif /* CONFIG_BT_TMAP */
78 };
79
device_found(const struct bt_le_scan_recv_info * info,struct net_buf_simple * ad_buf)80 static void device_found(const struct bt_le_scan_recv_info *info, struct net_buf_simple *ad_buf)
81 {
82 char addr_str[BT_ADDR_LE_STR_LEN];
83 int err;
84
85 if (default_conn) {
86 return;
87 }
88
89 /* We're only interested in extended advertising connectable events */
90 if (((info->adv_props & BT_GAP_ADV_PROP_EXT_ADV) == 0U ||
91 (info->adv_props & BT_GAP_ADV_PROP_CONNECTABLE) == 0U)) {
92 return;
93 }
94
95 bt_addr_le_to_str(info->addr, addr_str, sizeof(addr_str));
96 printk("Device found: %s (RSSI %d)\n", addr_str, info->rssi);
97
98 /* connect only to devices in close proximity */
99 if (info->rssi < -70) {
100 FAIL("RSSI too low");
101 return;
102 }
103
104 printk("Stopping scan\n");
105 if (bt_le_scan_stop()) {
106 FAIL("Could not stop scan");
107 return;
108 }
109
110 err = bt_conn_le_create(info->addr, BT_CONN_LE_CREATE_CONN, BT_BAP_CONN_PARAM_RELAXED,
111 &default_conn);
112 if (err) {
113 FAIL("Could not connect to peer: %d", err);
114 }
115 }
116
117 struct bt_le_scan_cb common_scan_cb = {
118 .recv = device_found,
119 };
120
connected(struct bt_conn * conn,uint8_t err)121 static void connected(struct bt_conn *conn, uint8_t err)
122 {
123 char addr[BT_ADDR_LE_STR_LEN];
124
125 (void)bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
126
127 if (default_conn == NULL) {
128 default_conn = bt_conn_ref(conn);
129 }
130
131 if (err != 0) {
132 bt_conn_unref(default_conn);
133 default_conn = NULL;
134
135 FAIL("Failed to connect to %s (0x%02x)\n", addr, err);
136 return;
137 }
138
139 printk("Connected to %s (%p)\n", addr, conn);
140 SET_FLAG(flag_connected);
141 }
142
disconnected(struct bt_conn * conn,uint8_t reason)143 void disconnected(struct bt_conn *conn, uint8_t reason)
144 {
145 char addr[BT_ADDR_LE_STR_LEN];
146
147 if (conn != default_conn) {
148 return;
149 }
150
151 bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
152
153 printk("Disconnected: %s (reason 0x%02x)\n", addr, reason);
154
155 bt_conn_unref(default_conn);
156 default_conn = NULL;
157 UNSET_FLAG(flag_connected);
158 UNSET_FLAG(flag_conn_updated);
159 SET_FLAG(flag_disconnected);
160
161 security_level = BT_SECURITY_L1;
162 }
163
conn_param_updated_cb(struct bt_conn * conn,uint16_t interval,uint16_t latency,uint16_t timeout)164 static void conn_param_updated_cb(struct bt_conn *conn, uint16_t interval, uint16_t latency,
165 uint16_t timeout)
166 {
167 printk("Connection parameter updated: %p 0x%04X (%u us), 0x%04X, 0x%04X\n", conn, interval,
168 BT_CONN_INTERVAL_TO_US(interval), latency, timeout);
169
170 SET_FLAG(flag_conn_updated);
171 }
172
security_changed_cb(struct bt_conn * conn,bt_security_t level,enum bt_security_err err)173 static void security_changed_cb(struct bt_conn *conn, bt_security_t level, enum bt_security_err err)
174 {
175 printk("Security changed: %p level %d err %d\n", conn, level, err);
176
177 if (err == BT_SECURITY_ERR_SUCCESS) {
178 security_level = level;
179 }
180 }
181
182 BT_CONN_CB_DEFINE(conn_callbacks) = {
183 .connected = connected,
184 .disconnected = disconnected,
185 .le_param_updated = conn_param_updated_cb,
186 .security_changed = security_changed_cb,
187 };
188
189
setup_connectable_adv(struct bt_le_ext_adv ** ext_adv)190 void setup_connectable_adv(struct bt_le_ext_adv **ext_adv)
191 {
192 int err;
193
194 /* Create a non-connectable advertising set */
195 err = bt_le_ext_adv_create(BT_BAP_ADV_PARAM_CONN_QUICK, NULL, ext_adv);
196 if (err != 0) {
197 FAIL("Unable to create extended advertising set: %d\n", err);
198 return;
199 }
200
201 err = bt_le_ext_adv_set_data(*ext_adv, connectable_ad, ARRAY_SIZE(connectable_ad), NULL, 0);
202 if (err != 0) {
203 FAIL("Unable to set extended advertising data: %d\n", err);
204
205 bt_le_ext_adv_delete(*ext_adv);
206
207 return;
208 }
209
210 err = bt_le_ext_adv_start(*ext_adv, BT_LE_EXT_ADV_START_DEFAULT);
211 if (err != 0) {
212 FAIL("Failed to start advertising set (err %d)\n", err);
213
214 bt_le_ext_adv_delete(*ext_adv);
215
216 return;
217 }
218
219 printk("Advertising started\n");
220 }
221
setup_broadcast_adv(struct bt_le_ext_adv ** adv)222 void setup_broadcast_adv(struct bt_le_ext_adv **adv)
223 {
224 struct bt_le_adv_param ext_adv_param = *BT_BAP_ADV_PARAM_BROADCAST_SLOW;
225 int err;
226
227 /* Zephyr Controller works best while Extended Advertising interval is a multiple
228 * of the ISO Interval minus 10 ms (max. advertising random delay). This is
229 * required to place the AUX_ADV_IND PDUs in a non-overlapping interval with the
230 * Broadcast ISO radio events.
231 */
232 ext_adv_param.interval_min -= BT_GAP_MS_TO_ADV_INTERVAL(10U);
233 ext_adv_param.interval_max -= BT_GAP_MS_TO_ADV_INTERVAL(10U);
234
235 /* Create a non-connectable advertising set */
236 err = bt_le_ext_adv_create(&ext_adv_param, NULL, adv);
237 if (err != 0) {
238 FAIL("Unable to create extended advertising set: %d\n", err);
239 return;
240 }
241
242 /* Set periodic advertising parameters */
243 err = bt_le_per_adv_set_param(*adv, BT_BAP_PER_ADV_PARAM_BROADCAST_SLOW);
244 if (err) {
245 FAIL("Failed to set periodic advertising parameters: %d\n", err);
246 return;
247 }
248 }
249
test_tick(bs_time_t HW_device_time)250 void test_tick(bs_time_t HW_device_time)
251 {
252 if (bst_result != Passed) {
253 FAIL("test failed (not passed after %i seconds)\n", WAIT_SECONDS);
254 }
255 }
256
test_init(void)257 void test_init(void)
258 {
259 bst_ticker_set_next_tick_absolute(WAIT_TIME);
260 bst_result = In_progress;
261 }
262
263 #define SYNC_MSG_SIZE 1
264 static int32_t dev_cnt;
265 static uint backchannel_nums[255];
266 static uint chan_cnt;
267
register_more_cmd_args(void)268 static void register_more_cmd_args(void)
269 {
270 static bs_args_struct_t args_struct_toadd[] = {
271 {
272 .option = "D",
273 .name = "number_devices",
274 .type = 'i',
275 .dest = (void *)&dev_cnt,
276 .descript = "Number of devices which will connect in this phy",
277 .is_mandatory = true,
278 },
279 ARG_TABLE_ENDMARKER,
280 };
281
282 bs_add_extra_dynargs(args_struct_toadd);
283 }
284 NATIVE_TASK(register_more_cmd_args, PRE_BOOT_1, 100);
285
get_dev_cnt(void)286 uint16_t get_dev_cnt(void)
287 {
288 return (uint16_t)dev_cnt;
289 }
290
291 /**
292 * @brief Get the channel id based on remote device ID
293 *
294 * The is effectively a very simple hashing function to generate unique channel IDs from device IDs
295 *
296 * @param dev 16-bit device ID
297 *
298 * @return uint 32-bit channel ID
299 */
get_chan_num(uint16_t dev)300 static uint get_chan_num(uint16_t dev)
301 {
302 uint16_t self = (uint16_t)bsim_args_get_global_device_nbr();
303 uint channel_id;
304
305 if (self < dev) {
306 channel_id = (dev << 16) | self;
307 } else {
308 channel_id = (self << 16) | dev;
309 }
310
311 return channel_id;
312 }
313
314 /**
315 * @brief Calculate the sync timeout based on the PA interval
316 *
317 * Calculates the sync timeout, based on the PA interval and a pre-defined ratio.
318 * The return value is in N*10ms, conform the parameter for bt_le_per_adv_sync_create
319 *
320 * @param pa_interval PA interval
321 *
322 * @return uint16_t synchronization timeout (N * 10 ms)
323 */
interval_to_sync_timeout(uint16_t pa_interval)324 uint16_t interval_to_sync_timeout(uint16_t pa_interval)
325 {
326 uint16_t pa_timeout;
327
328 if (pa_interval == BT_BAP_PA_INTERVAL_UNKNOWN) {
329 /* Use maximum value to maximize chance of success */
330 pa_timeout = BT_GAP_PER_ADV_MAX_TIMEOUT;
331 } else {
332 uint32_t interval_us;
333 uint32_t timeout;
334
335 /* Add retries and convert to unit in 10's of ms */
336 interval_us = BT_GAP_PER_ADV_INTERVAL_TO_US(pa_interval);
337 timeout = BT_GAP_US_TO_PER_ADV_SYNC_TIMEOUT(interval_us) *
338 PA_SYNC_INTERVAL_TO_TIMEOUT_RATIO;
339
340 /* Enforce restraints */
341 pa_timeout = CLAMP(timeout, BT_GAP_PER_ADV_MIN_TIMEOUT, BT_GAP_PER_ADV_MAX_TIMEOUT);
342 }
343
344 return pa_timeout;
345 }
346
347 /**
348 * @brief Set up the backchannels between each pair of device
349 *
350 * Each pair of devices will get a unique channel
351 */
setup_backchannels(void)352 static void setup_backchannels(void)
353 {
354 __ASSERT_NO_MSG(dev_cnt > 0 && dev_cnt < ARRAY_SIZE(backchannel_nums));
355 const uint self = bsim_args_get_global_device_nbr();
356 uint device_numbers[dev_cnt];
357 uint *channels;
358
359 for (int32_t i = 0; i < dev_cnt; i++) {
360 backchannel_nums[chan_cnt] = get_chan_num((uint16_t)i);
361 device_numbers[chan_cnt++] = i;
362 }
363
364 channels = bs_open_back_channel(self, device_numbers, backchannel_nums, chan_cnt);
365 __ASSERT_NO_MSG(channels != NULL);
366 }
367 NATIVE_TASK(setup_backchannels, PRE_BOOT_3, 100);
368
get_chan_id_from_chan_num(uint chan_num)369 static uint get_chan_id_from_chan_num(uint chan_num)
370 {
371 for (uint i = 0; i < ARRAY_SIZE(backchannel_nums); i++) {
372 if (backchannel_nums[i] == chan_num) {
373 return i;
374 }
375 }
376
377 return 0;
378 }
379
backchannel_sync_send(uint dev)380 void backchannel_sync_send(uint dev)
381 {
382 const uint chan_id = get_chan_id_from_chan_num(get_chan_num((uint16_t)dev));
383 uint8_t sync_msg[SYNC_MSG_SIZE] = {0};
384
385 printk("Sending sync to %u\n", chan_id);
386 bs_bc_send_msg(chan_id, sync_msg, ARRAY_SIZE(sync_msg));
387 }
388
backchannel_sync_send_all(void)389 void backchannel_sync_send_all(void)
390 {
391 for (int32_t i = 0; i < dev_cnt; i++) {
392 const uint self = bsim_args_get_global_device_nbr();
393
394 if (i != self) { /* skip ourselves*/
395 backchannel_sync_send(i);
396 }
397 }
398 }
399
backchannel_sync_wait(uint dev)400 void backchannel_sync_wait(uint dev)
401 {
402 const uint chan_id = get_chan_id_from_chan_num(get_chan_num((uint16_t)dev));
403
404 printk("Waiting for sync to %u\n", chan_id);
405
406 while (true) {
407 if (bs_bc_is_msg_received(chan_id) > 0) {
408 uint8_t sync_msg[SYNC_MSG_SIZE];
409
410 bs_bc_receive_msg(chan_id, sync_msg, ARRAY_SIZE(sync_msg));
411 /* We don't really care about the content of the message */
412 break;
413 }
414
415 k_sleep(K_MSEC(1));
416 }
417 }
418
backchannel_sync_wait_all(void)419 void backchannel_sync_wait_all(void)
420 {
421 for (int32_t i = 0; i < dev_cnt; i++) {
422 const uint self = bsim_args_get_global_device_nbr();
423
424 if (i != self) { /* skip ourselves*/
425 backchannel_sync_wait(i);
426 }
427 }
428 }
429
backchannel_sync_wait_any(void)430 void backchannel_sync_wait_any(void)
431 {
432 while (true) {
433 for (int32_t i = 0; i < dev_cnt; i++) {
434 const uint self = bsim_args_get_global_device_nbr();
435
436 if (i != self) { /* skip ourselves*/
437 const uint chan_id =
438 get_chan_id_from_chan_num(get_chan_num((uint16_t)i));
439
440 if (bs_bc_is_msg_received(chan_id) > 0) {
441 uint8_t sync_msg[SYNC_MSG_SIZE];
442
443 bs_bc_receive_msg(chan_id, sync_msg, ARRAY_SIZE(sync_msg));
444 /* We don't really care about the content of the message */
445
446 return;
447 }
448 }
449 }
450
451 k_sleep(K_MSEC(100));
452 }
453 }
454
backchannel_sync_clear(uint dev)455 void backchannel_sync_clear(uint dev)
456 {
457 const uint chan_id = get_chan_id_from_chan_num(get_chan_num((uint16_t)dev));
458
459 while (bs_bc_is_msg_received(chan_id)) {
460 uint8_t sync_msg[SYNC_MSG_SIZE];
461
462 bs_bc_receive_msg(chan_id, sync_msg, ARRAY_SIZE(sync_msg));
463 /* We don't really care about the content of the message */
464 }
465 }
466
backchannel_sync_clear_all(void)467 void backchannel_sync_clear_all(void)
468 {
469 for (int32_t i = 0; i < dev_cnt; i++) {
470 const uint self = bsim_args_get_global_device_nbr();
471
472 if (i != self) { /* skip ourselves*/
473 backchannel_sync_clear(i);
474 }
475 }
476 }
477
