Maximum iso data length of NRF5340 audio increased

RE: Maximum iso data length of NRF5340 audio increased

dejans — Fri, 21 Jun 2024 08:25:28 GMT

Hi,

I am glad to assist. Please let me know if you need any further assistance.

Best regards,
Dejan

RE: Maximum iso data length of NRF5340 audio increased

LandyWang — Thu, 20 Jun 2024 01:03:01 GMT

Ok, I see. Thank you for your assistance.

RE: Maximum iso data length of NRF5340 audio increased

dejans — Wed, 19 Jun 2024 13:58:46 GMT

Hi,

The audio application currently supports max PDU (containing one SDU) of 251.

Best regards,
Dejan

RE: Maximum iso data length of NRF5340 audio increased

dejans — Fri, 14 Jun 2024 08:38:06 GMT

Hi,

I would need to check this internally. I will get back to you during next week.

Best regards,
Dejan

RE: Maximum iso data length of NRF5340 audio increased

LandyWang — Wed, 12 Jun 2024 06:18:17 GMT

Thanks for your assistance, it works.

Now I can successfully transfer 250 bytes of data through bis.

Then, I tried to increase the sdu size to 512 bytes. The following are my modifications on the gateway.

BT_CODEC_LC3_QOS_10_UNFRAMED(512u, 0u,20u, LE_AUDIO_PRES_DELAY_US))

I tried to send 480 bytes of data, written as follows:

streamctrl_encoded_data_send(my_data, 480);

Although the bis headset connect to the gateway successfully, it did not receive any data.

What is the limit on the data size that is bis gateway can transmit?

RE: Maximum iso data length of NRF5340 audio increased

dejans — Tue, 11 Jun 2024 16:44:21 GMT

Hi,

On the gateway, you could try to replace

BT_CODEC_LC3_QOS_10_UNFRAMED(251u, 4u,20u, LE_AUDIO_PRES_DELAY_US))

with

BT_CODEC_LC3_QOS_10_UNFRAMED(251u, 2u,20u, LE_AUDIO_PRES_DELAY_US))

Generally, we highly recommend that you upgrade to the NCS v2.6.1 (or NCS v2.7.0 when it becomes available).

Best regards,
Dejan

RE: Maximum iso data length of NRF5340 audio increased

LandyWang — Tue, 11 Jun 2024 03:54:06 GMT

Now I already know how to increase the maximum iso data length, just change the codec configuration of bis gateway.

It seems that the maximum value can only be changed up to 251 bytes.

Here is my change in bis gateway.

[le_audio.h]

#define BT_AUDIO_LC3_BROADCAST_PRESET_RECOMMENDED(_loc, _stream_context)                           \
	BT_AUDIO_LC3_PRESET(                                                                       \
		BT_CODEC_LC3_CONFIG(                                                               \
			BT_CODEC_CONFIG_LC3_FREQ_48KHZ, BT_CODEC_CONFIG_LC3_DURATION_10, _loc,     \
			251u, 1, _stream_context),         \
		BT_CODEC_LC3_QOS_10_UNFRAMED(251u, 4u,20u, LE_AUDIO_PRES_DELAY_US))

But I encountered a new problem. When I tried to use bis headset to connect to the modified bis gateway, an Unexpected PA sync lost error occurred in bis headset.

This is my modification in bis headset.

[le_audio_bis_headset.c]

static struct bt_codec codec_capabilities =
	BT_CODEC_LC3_CONFIG(BT_CODEC_CONFIG_LC3_FREQ_48KHZ, \
			    BT_CODEC_CONFIG_LC3_DURATION_10, BT_AUDIO_LOCATION_FRONT_LEFT|BT_AUDIO_LOCATION_FRONT_RIGHT, 251u, \
			    1, BT_AUDIO_CONTEXT_TYPE_MEDIA);

This is log.

HL [00:01:30.250,305] <dbg> bt_hci_core: hci_le_meta_event: subevent 0x0d
HL [00:01:30.250,305] <dbg> bt_scan: bt_hci_le_adv_ext_report: Adv number of reports 1
HL [00:01:30.250,396] <dbg> bt_scan: le_adv_recv: 72:7A:C1:70:09:3A (random) event 0, len 17, rssi -77 dBm
HL [00:01:30.250,488] <dbg> bt_keys: bt_keys_find_irk: 72:7A:C1:70:09:3A (random)
HL [00:01:30.250,549] <dbg> bt_keys: bt_keys_find_irk: No IRK for 72:7A:C1:70:09:3A (random)
HL [00:01:30.250,579] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           44 d5 07 00 1c 96 01 20  00 29 00 00 78 0e 00 20 |D......  .)..x.. 
                                           de                                               |.                
HL [00:01:30.376,251] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 3e 2b 0d 01 10 00 01  f9 4b da 36 c6 7d 01 00 |.>+..... .K.6.}..
                                           ff 7f b4 00 00 00 00 00  00 00 00 00 11 02 01 1a |........ ........
                                           0d ff 4c 00 16 08 00 ce  62 05 85 4d 4c 0c       |..L..... b..ML.  
HL [00:01:30.376,251] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 43
HL [00:01:30.376,281] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x2001961c)
HL [00:01:30.376,281] <dbg> bt_hci_core: bt_recv: buf 0x2001961c len 45
HL [00:01:30.376,312] <dbg> bt_hci_core: rx_work_handler: Getting net_buf from queue
HL [00:01:30.376,312] <dbg> bt_hci_core: rx_work_handler: buf 0x2001961c type 1 len 45
HL [00:01:30.376,342] <dbg> bt_hci_core: hci_event: event 0x3e
HL [00:01:30.376,342] <dbg> bt_hci_core: hci_le_meta_event: subevent 0x0d
HL [00:01:30.376,342] <dbg> bt_scan: bt_hci_le_adv_ext_report: Adv number of reports 1
HL [00:01:30.376,434] <dbg> bt_scan: le_adv_recv: 7D:C6:36:DA:4B:F9 (random) event 3, len 17, rssi -76 dBm
HL [00:01:30.376,525] <dbg> bt_keys: bt_keys_find_irk: 7D:C6:36:DA:4B:F9 (random)
HL [00:01:30.376,586] <dbg> bt_keys: bt_keys_find_irk: No IRK for 7D:C6:36:DA:4B:F9 (random)
HL [00:01:30.376,647] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           06 00 00 00 18 61 07 00  74 68 07 00 1c 96 01 20 |.....a.. th..... 
                                           01                                               |.                
HL [00:01:30.546,844] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 3e 2d 0d 01 13 00 01  b8 2f 7d 79 6b 6b 01 00 |.>-..... ./}ykk..
                                           ff 7f b2 00 00 00 00 00  00 00 00 00 13 02 01 1a |........ ........
                                           02 0a 0c 0c ff 4c 00 10  07 3f 1f e4 de ea 1f 28 |.....L.. .?.....(
HL [00:01:30.546,844] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 45
HL [00:01:30.546,875] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x2001961c)
HL [00:01:30.546,875] <dbg> bt_hci_core: bt_recv: buf 0x2001961c len 47
HL [00:01:30.546,905] <dbg> bt_hci_core: rx_work_handler: Getting net_buf from queue
HL [00:01:30.546,905] <dbg> bt_hci_core: rx_work_handler: buf 0x2001961c type 1 len 47
HL [00:01:30.546,936] <dbg> bt_hci_core: hci_event: event 0x3e
HL [00:01:30.546,936] <dbg> bt_hci_core: hci_le_meta_event: subevent 0x0d
HL [00:01:30.546,936] <dbg> bt_scan: bt_hci_le_adv_ext_report: Adv number of reports 1
HL [00:01:30.547,027] <dbg> bt_scan: le_adv_recv: 6B:6B:79:7D:2F:B8 (random) event 0, len 19, rssi -78 dBm
HL [00:01:30.547,119] <dbg> bt_keys: bt_keys_find_irk: 6B:6B:79:7D:2F:B8 (random)
HL [00:01:30.547,180] <dbg> bt_keys: bt_keys_find_irk: No IRK for 6B:6B:79:7D:2F:B8 (random)
HL [00:01:30.547,241] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           06 00 00 00 18 61 07 00  74 68 07 00 1c 96 01 20 |.....a.. th..... 
                                           01 00 00                                         |...              
HL [00:01:30.552,520] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 3e 2c 0d 01 00 00 01  84 1f 15 fb 21 e4 01 02 |.>,..... ....!...
                                           00 7f c5 c0 03 00 00 00  00 00 00 00 12 0a 30 43 |........ ......0C
                                           57 44 4b 2d 47 31 5f 37  06 16 52 18 af 9f 4a    |WDK-G1_7 ..R...J 
HL [00:01:30.552,520] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 44
HL [00:01:30.552,551] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x200187f4)
HL [00:01:30.552,551] <dbg> bt_hci_core: bt_recv: buf 0x200187f4 len 46
HL [00:01:30.552,581] <dbg> bt_hci_core: rx_work_handler: Getting net_buf from queue
HL [00:01:30.552,581] <dbg> bt_hci_core: rx_work_handler: buf 0x200187f4 type 1 len 46
HL [00:01:30.552,581] <dbg> bt_hci_core: hci_event: event 0x3e
HL [00:01:30.552,612] <dbg> bt_hci_core: hci_le_meta_event: subevent 0x0d
HL [00:01:30.552,612] <dbg> bt_scan: bt_hci_le_adv_ext_report: Adv number of reports 1
HL [00:01:30.552,703] <dbg> bt_scan: le_adv_recv: E4:21:FB:15:1F:84 (random) event 5, len 18, rssi -59 dBm
HL [00:01:30.552,764] <dbg> bt_keys: bt_keys_find_irk: E4:21:FB:15:1F:84 (random)
HL [00:01:30.552,825] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           00 46 2d 00 8c d8 00 20  04 00 00 00 e0 d4 07 00 |.F-....  ........
                                           44 d5                                            |D.               
HL [00:01:30.654,449] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 3e 2c 0d 01 13 00 01  4f 80 d2 ef 6c 4e 01 00 |.>,..... O...lN..
                                           ff 7f b0 00 00 00 00 00  00 00 00 00 12 02 01 1a |........ ........
                                           02 0a 0c 0b ff 4c 00 10  06 75 1e 30 33 f4 6e    |.....L.. .u.03.n 
HL [00:01:30.654,479] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 44
HL [00:01:30.654,479] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x2001961c)
HL [00:01:30.654,510] <dbg> bt_hci_core: bt_recv: buf 0x2001961c len 46
HL [00:01:30.654,510] <dbg> bt_hci_core: rx_work_handler: Getting net_buf from queue
HL [00:01:30.654,541] <dbg> bt_hci_core: rx_work_handler: buf 0x2001961c type 1 len 46
HL [00:01:30.654,541] <dbg> bt_hci_core: hci_event: event 0x3e
HL [00:01:30.654,541] <dbg> bt_hci_core: hci_le_meta_event: subevent 0x0d
HL [00:01:30.654,571] <dbg> bt_scan: bt_hci_le_adv_ext_report: Adv number of reports 1
HL [00:01:30.654,632] <dbg> bt_scan: le_adv_recv: 4E:6C:EF:D2:80:4F (random) event 0, len 18, rssi -80 dBm
--- 9 messages dropped ---
HL [00:01:30.654,724] <dbg> bt_keys: bt_keys_find_irk: 4E:6C:EF:D2:80:4F (random)
HL [00:01:30.659,881] <dbg> bt_hci_core: hci_le_meta_event: subevent 0x0d
HL [00:01:30.659,881] <dbg> bt_scan: bt_hci_le_adv_ext_report: Adv number of reports 1
HL [00:01:30.659,973] <dbg> bt_scan: le_adv_recv: 63:C8:C6:80:D8:50 (random) event 0, len 30, rssi -71 dBm
HL [00:01:30.660,064] <dbg> bt_keys: bt_keys_find_irk: 63:C8:C6:80:D8:50 (random)
HL [00:01:30.660,125] <dbg> bt_keys: bt_keys_find_irk: No IRK for 63:C8:C6:80:D8:50 (random)
HL [00:01:30.660,156] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           03 00 00 00 f8 60 07 00  74 68 07 00 98 0e 00 20 |.....`.. th..... 
                                           00 31 00 00 78 0e 00 20  c8 53 2d 00 40 72       |.1..x..  .S-.@r  
HL [00:01:30.663,085] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 3e 39 0d 01 10 00 01  82 1f e6 65 2e 1e 01 00 |.>9..... ...e....
                                           ff 7f bd 00 00 00 00 00  00 00 00 00 1f 1e ff 06 |........ ........
                                           00 01 09 20 02 7a c1 87  3d a8 55 a1 2a 65 02 4f |... .z.. =.U.*e.O
                                           7a 71 9b 76 42 93 74 6e  46 c5 19 cc             |zq.vB.tn F...    
HL [00:01:30.663,116] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 57
HL [00:01:30.663,116] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x2001961c)
HL [00:01:30.663,146] <dbg> bt_hci_core: bt_recv: buf 0x2001961c len 59
HL [00:01:30.663,177] <dbg> bt_hci_core: rx_work_handler: Getting net_buf from queue
HL [00:01:30.663,177] <dbg> bt_hci_core: rx_work_handler: buf 0x2001961c type 1 len 59
HL [00:01:30.663,177] <dbg> bt_hci_core: hci_event: event 0x3e
HL [00:01:30.663,208] <dbg> bt_hci_core: hci_le_meta_event: subevent 0x0d
HL [00:01:30.663,208] <dbg> bt_scan: bt_hci_le_adv_ext_report: Adv number of reports 1
HL [00:01:30.663,299] <dbg> bt_scan: le_adv_recv: 1E:2E:65:E6:1F:82 (random) event 3, len 31, rssi -67 dBm
HL [00:01:30.663,360] <dbg> bt_keys: bt_keys_find_irk: 1E:2E:65:E6:1F:82 (random)
HL [00:01:30.663,421] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           01 00 00 00 3a 00 00 00  01 21 00 00 78 0e 00 20 |....:... .!..x.. 
                                           77 54 2d 00 88 0e 00 20  04 00 00 00 0c 60 07    |wT-....  .....`. 
HL [00:01:30.773,376] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 3e 39 0d 01 13 00 01  5c d4 77 86 70 df 01 00 |.>9..... \.w.p...
                                           ff 7f b1 00 00 00 00 00  00 00 00 00 1f 1e ff 4c |........ .......L
                                           00 12 19 68 08 2b 73 bf  b8 23 e0 3b 93 d0 b8 23 |...h.+s. .#.;...#
                                           c9 70 c4 5a c7 45 a9 83  a0 dc 03 5c             |.p.Z.E.. ...\    
HL [00:01:30.773,406] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 57
HL [00:01:30.773,406] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x2001961c)
HL [00:01:30.773,406] <dbg> bt_hci_core: bt_recv: buf 0x2001961c len 59
HL [00:01:30.773,437] <dbg> bt_hci_core: rx_work_handler: Getting net_buf from queue
HL [00:01:30.773,468] <dbg> bt_hci_core: rx_work_handler: buf 0x2001961c type 1 len 59
HL [00:01:30.773,468] <dbg> bt_hci_core: hci_event: event 0x3e
HL [00:01:30.773,468] <dbg> bt_hci_core: hci_le_meta_event: subevent 0x0d
HL [00:01:30.773,468] <dbg> bt_scan: bt_hci_le_adv_ext_report: Adv number of reports 1
HL [00:01:30.773,559] <dbg> bt_scan: le_adv_recv: DF:70:86:77:D4:5C (random) event 0, len 31, rssi -79 dBm
HL [00:01:30.773,651] <dbg> bt_keys: bt_keys_find_irk: DF:70:86:77:D4:5C (random)
HL [00:01:30.773,681] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           ce 53 2d 00 f8 d4 07 00  04 01 00 00 98 6c 07 00 |.S-..... .....l..
                                           54 a5 07 00 8c d8 00 20  03 34 45 3a 36 43 3a    |T......  .4E:6C: 
HL [00:01:30.796,478] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 3e 2b 0d 01 13 00 01  3a 09 70 c1 7a 72 01 00 |.>+..... :.p.zr..
                                           ff 7f b5 00 00 00 00 00  00 00 00 00 11 02 01 1a |........ ........
                                           02 0a 07 0a ff 4c 00 10  05 52 1c dd f8 19       |.....L.. .R....  
HL [00:01:30.796,508] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 43
HL [00:01:30.796,508] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x2001961c)
HL [00:01:30.796,539] <dbg> bt_hci_core: bt_recv: buf 0x2001961c len 45
HL [00:01:30.796,539] <dbg> bt_hci_core: rx_work_handler: Getting net_buf from queue
HL [00:01:30.796,569] <dbg> bt_hci_core: rx_work_handler: buf 0x2001961c type 1 len 45
HL [00:01:30.796,569] <dbg> bt_hci_core: hci_event: event 0x3e
HL [00:01:30.796,569] <dbg> bt_hci_core: hci_le_meta_event: subevent 0x0d
HL [00:01:30.796,600] <dbg> bt_scan: bt_hci_le_adv_ext_report: Adv number of reports 1
HL [00:01:30.796,661] <dbg> bt_scan: le_adv_recv: 72:7A:C1:70:09:3A (random) event 0, len 17, rssi -75 dBm
HL [00:01:30.796,752] <dbg> bt_keys: bt_keys_find_irk: 72:7A:C1:70:09:3A (random)
HL [00:01:30.796,813] <dbg> bt_keys: bt_keys_find_irk: No IRK for 72:7A:C1:70:09:3A (random)
HL [00:01:30.796,875] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           04 00 00 00 e0 d4 07 00  44 d5 07 00 1c 96 01 20 |........ D...... 
                                           00                                               |.                
HL [00:01:30.839,782] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 3e 22 0d 01 10 00 01  9d 24 67 75 ca de 01 00 |.>"..... .$gu....
                                           ff 7f b4 00 00 00 00 00  00 00 00 00 08 07 ff 4c |........ .......L
                                           00 12 02 00 00                                   |.....            
HL [00:01:30.839,782] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 34
HL [00:01:30.839,813] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x2001961c)
HL [00:01:30.839,813] <dbg> bt_hci_core: bt_recv: buf 0x2001961c len 36
HL [00:01:30.839,843] <dbg> bt_hci_core: rx_work_handler: Getting net_buf from queue
HL [00:01:30.839,843] <dbg> bt_hci_core: rx_work_handler: buf 0x2001961c type 1 len 36
HL [00:01:30.839,874] <dbg> bt_hci_core: hci_event: event 0x3e
HL [00:01:30.839,874] <dbg> bt_hci_core: hci_le_meta_event: subevent 0x0d
HL [00:01:30.839,874] <dbg> bt_scan: bt_hci_le_adv_ext_report: Adv number of reports 1
HL [00:01:30.839,965] <dbg> bt_scan: le_adv_recv: DE:CA:75:67:24:9D (random) event 3, len 8, rssi -76 dBm
HL [00:01:30.840,057] <dbg> bt_keys: bt_keys_find_irk: DE:CA:75:67:24:9D (random)
HL [00:01:30.840,087] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           00 21 00 00 7c 0e 00 20                          |.!..|..          
HL [00:01:30.852,508] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 3e 2c 0d 01 00 00 01  84 1f 15 fb 21 e4 01 02 |.>,..... ....!...
                                           00 7f c6 c0 03 00 00 00  00 00 00 00 12 0a 30 43 |........ ......0C
                                           57 44 4b 2d 47 31 5f 37  06 16 52 18 af 9f 4a    |WDK-G1_7 ..R...J 
HL [00:01:30.852,539] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 44
HL [00:01:30.852,539] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x200187f4)
HL [00:01:30.852,539] <dbg> bt_hci_core: bt_recv: buf 0x200187f4 len 46
HL [00:01:30.852,569] <dbg> bt_hci_core: rx_work_handler: Getting net_buf from queue
HL [00:01:30.852,600] <dbg> bt_hci_core: rx_work_handler: buf 0x200187f4 type 1 len 46
HL [00:01:30.852,600] <dbg> bt_hci_core: hci_event: event 0x3e
HL [00:01:30.852,600] <dbg> bt_hci_core: hci_le_meta_event: subevent 0x0d
HL [00:01:30.852,630] <dbg> bt_scan: bt_hci_le_adv_ext_report: Adv number of reports 1
HL [00:01:30.852,691] <dbg> bt_scan: le_adv_recv: E4:21:FB:15:1F:84 (random) event 5, len 18, rssi -58 dBm
HL [00:01:30.852,783] <dbg> bt_keys: bt_keys_find_irk: E4:21:FB:15:1F:84 (random)
HL [00:01:30.852,813] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           00 00 00 00 08 07 ff 4c  00 12 02 00 00 0e 00 20 |.......L ....... 
                                           00 21                                            |.!               
HL [00:01:30.910,827] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 3e 2d 0d 01 13 00 01  be 2e 30 fe ce 68 01 00 |.>-..... ..0..h..
                                           ff 7f bb 00 00 00 00 00  00 00 00 00 13 02 01 1a |........ ........
                                           02 0a 0c 0c ff 4c 00 10  07 7b 1f 2e 2c f5 ec 18 |.....L.. .{..,...
HL [00:01:30.910,858] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 45
HL [00:01:30.910,888] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x2001961c)
HL [00:01:30.910,888] <dbg> bt_hci_core: bt_recv: buf 0x2001961c len 47
HL [00:01:30.910,919] <dbg> bt_hci_core: rx_work_handler: Getting net_buf from queue
HL [00:01:30.910,919] <dbg> bt_hci_core: rx_work_handler: buf 0x2001961c type 1 len 47
HL [00:01:30.910,919] <dbg> bt_hci_core: hci_event: event 0x3e
HL [00:01:30.910,919] <dbg> bt_hci_core: hci_le_meta_event: subevent 0x0d
HL [00:01:30.910,949] <dbg> bt_scan: bt_hci_le_adv_ext_report: Adv number of reports 1
HL [00:01:30.911,010] <dbg> bt_scan: le_adv_recv: 68:CE:FE:30:2E:BE (random) event 0, len 19, rssi -69 dBm
HL [00:01:30.911,102] <dbg> bt_keys: bt_keys_find_irk: 68:CE:FE:30:2E:BE (random)
HL [00:01:30.911,193] <dbg> bt_keys: bt_keys_find_irk: No IRK for 68:CE:FE:30:2E:BE (random)
HL [00:01:30.911,224] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           05 00 00 00 b8 66 07 00  84 68 07 00 f4 87 01 20 |.....f.. .h..... 
                                           2e 00 00                                         |...              
HL [00:01:31.019,897] <dbg> bt_hci_core: bt_hci_cmd_create: opcode 0x1001 param_len 0
HL [00:01:31.019,897] <dbg> bt_hci_core: bt_hci_cmd_create: buf 0x2001a0d8
HL [00:01:31.019,927] <dbg> bt_hci_core: bt_hci_cmd_send_sync: buf 0x2001a0d8 opcode 0x1001 len 3
HL [00:01:31.019,958] <dbg> bt_hci_core: process_events: count 3
HL [00:01:31.019,958] <dbg> bt_hci_core: process_events: ev->state 4
HL [00:01:31.019,958] <dbg> bt_hci_core: send_cmd: calling net_buf_get
HL [00:01:31.019,989] <dbg> bt_hci_core: send_cmd: calling sem_take_wait
HL [00:01:31.019,989] <dbg> bt_hci_core: send_cmd: Sending command 0x1001 (buf 0x2001a0d8) to driver
HL [00:01:31.019,989] <dbg> bt_hci_core: bt_send: buf 0x2001a0d8 len 3 type 0
HL [00:01:31.020,019] <dbg> bt_hci_driver: bt_rpmsg_send: buf 0x2001a0d8 type 0 len 3
HL [00:01:31.020,019] <dbg> bt_hci_driver: bt_rpmsg_send: Final HCI buffer:
                                           01 01 10 00                                      |....             
HL [00:01:31.020,050] <dbg> bt_hci_core: process_events: ev->state 0
HL [00:01:31.020,080] <dbg> bt_hci_core: process_events: ev->state 0
HL [00:01:31.020,080] <dbg> bt_conn: bt_conn_prepare_events: 
HL [00:01:31.020,080] <dbg> bt_conn: conn_prepare_events: Adding conn 0x20002828 to poll list
HL [00:01:31.020,111] <dbg> bt_hci_core: hci_tx_thread: Calling k_poll with 3 events
HL [00:01:31.020,172] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 0e 0c 01 01 10 00 0b  ee 0c 0b e8 07 ee 0c    |........ ....... 
HL [00:01:31.020,172] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 12
HL [00:01:31.020,172] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x2001a0d8)
HL [00:01:31.020,202] <dbg> bt_hci_core: bt_recv: buf 0x2001a0d8 len 14
HL [00:01:31.020,202] <dbg> bt_hci_core: hci_cmd_complete: opcode 0x1001
HL [00:01:31.020,202] <dbg> bt_hci_core: hci_cmd_done: opcode 0x1001 status 0x00 buf 0x2001a0d8
HL [00:01:31.020,233] <dbg> bt_hci_core: bt_hci_cmd_send_sync: rsp 0x2001a0d8 opcode 0x1001 len 9
HL [00:01:31.020,263] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           03 36 38 3a 43 45 3a 46  45                      |.68:CE:F E       
HL [00:01:31.095,733] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 3e 2d 0d 01 13 00 01  b8 2f 7d 79 6b 6b 01 00 |.>-..... ./}ykk..
                                           ff 7f b5 00 00 00 00 00  00 00 00 00 13 02 01 1a |........ ........
                                           02 0a 0c 0c ff 4c 00 10  07 3f 1f e4 de ea 1f 28 |.....L.. .?.....(
HL [00:01:31.095,733] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 45
HL [00:01:31.095,764] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x2001961c)
HL [00:01:31.095,764] <dbg> bt_hci_core: bt_recv: buf 0x2001961c len 47
HL [00:01:31.095,794] <dbg> bt_hci_core: rx_work_handler: Getting net_buf from queue
HL [00:01:31.095,794] <dbg> bt_hci_core: rx_work_handler: buf 0x2001961c type 1 len 47
HL [00:01:31.095,825] <dbg> bt_hci_core: hci_event: event 0x3e
HL [00:01:31.095,825] <dbg> bt_hci_core: hci_le_meta_event: subevent 0x0d
HL [00:01:31.095,825] <dbg> bt_scan: bt_hci_le_adv_ext_report: Adv number of reports 1
HL [00:01:31.095,916] <dbg> bt_scan: le_adv_recv: 6B:6B:79:7D:2F:B8 (random) event 0, len 19, rssi -75 dBm
HL [00:01:31.095,977] <dbg> bt_keys: bt_keys_find_irk: 6B:6B:79:7D:2F:B8 (random)
HL [00:01:31.096,069] <dbg> bt_keys: bt_keys_find_irk: No IRK for 6B:6B:79:7D:2F:B8 (random)
HL [00:01:31.096,130] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           04 00 00 00 34 66 07 00  6c 67 07 00 00 00 00 00 |....4f.. lg......
                                           00 19 00                                         |...              
HL [00:01:31.201,354] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 3e 38 0d 01 10 00 01  1d b7 27 62 fb 6f 01 00 |.>8..... ..'b.o..
                                           ff 7f ad 00 00 00 00 00  00 00 00 00 1e 02 01 1a |........ ........
                                           1a ff 4c 00 13 0b 1b 89  35 1f a2 1d bf d4 aa 9a |..L..... 5.......
                                           00 16 08 00 c2 89 35 1f  b0 4f f4                |......5. .O.     
HL [00:01:31.201,385] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 56
HL [00:01:31.201,416] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x2001961c)
HL [00:01:31.201,416] <dbg> bt_hci_core: bt_recv: buf 0x2001961c len 58
HL [00:01:31.201,446] <dbg> bt_hci_core: rx_work_handler: Getting net_buf from queue
HL [00:01:31.201,446] <dbg> bt_hci_core: rx_work_handler: buf 0x2001961c type 1 len 58
HL [00:01:31.201,446] <dbg> bt_hci_core: hci_event: event 0x3e
HL [00:01:31.201,477] <dbg> bt_hci_core: hci_le_meta_event: subevent 0x0d
HL [00:01:31.201,477] <dbg> bt_scan: bt_hci_le_adv_ext_report: Adv number of reports 1
HL [00:01:31.201,568] <dbg> bt_scan: le_adv_recv: 6F:FB:62:27:B7:1D (random) event 3, len 30, rssi -83 dBm
HL [00:01:31.201,629] <dbg> bt_keys: bt_keys_find_irk: 6F:FB:62:27:B7:1D (random)
HL [00:01:31.201,721] <dbg> bt_keys: bt_keys_find_irk: No IRK for 6F:FB:62:27:B7:1D (random)
HL [00:01:31.201,751] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           00 19 00 00 78 0e 00 20  43 8c 2d 00 84 60 07 00 |....x..  C.-..`..
                                           03 00 00 00 f8 60 07 00  74 68 07 00 78 0e       |.....`.. th..x.  
HL [00:01:31.206,939] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 3e 2c 0d 01 13 00 01  4f 80 d2 ef 6c 4e 01 00 |.>,..... O...lN..
                                           ff 7f ad 00 00 00 00 00  00 00 00 00 12 02 01 1a |........ ........
                                           02 0a 0c 0b ff 4c 00 10  06 75 1e 30 33 f4 6e    |.....L.. .u.03.n 
HL [00:01:31.206,970] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 44
HL [00:01:31.206,970] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x2001961c)
HL [00:01:31.207,000] <dbg> bt_hci_core: bt_recv: buf 0x2001961c len 46
HL [00:01:31.207,000] <dbg> bt_hci_core: rx_work_handler: Getting net_buf from queue
HL [00:01:31.207,031] <dbg> bt_hci_core: rx_work_handler: buf 0x2001961c type 1 len 46
HL [00:01:31.207,031] <dbg> bt_hci_core: hci_event: event 0x3e
HL [00:01:31.207,031] <dbg> bt_hci_core: hci_le_meta_event: subevent 0x0d
HL [00:01:31.207,061] <dbg> bt_scan: bt_hci_le_adv_ext_report: Adv number of reports 1
HL [00:01:31.207,122] <dbg> bt_scan: le_adv_recv: 4E:6C:EF:D2:80:4F (random) event 0, len 18, rssi -83 dBm
HL [00:01:31.207,214] <dbg> bt_keys: bt_keys_find_irk: 4E:6C:EF:D2:80:4F (random)
HL [00:01:31.207,275] <dbg> bt_keys: bt_keys_find_irk: No IRK for 4E:6C:EF:D2:80:4F (random)
HL [00:01:31.207,336] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           3a 00 00 00 d8 a0 01 20  00 19 00 00 78 0e 00 20 |:......  ....x.. 
                                           c9 99                                            |..               
HL [00:01:31.560,821] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 3e 37 0d 01 10 00 01  07 ce 2b aa ff 25 01 00 |.>7..... ..+..%..
                                           ff 7f 99 00 00 00 00 00  00 00 00 00 1d 1c ff 06 |........ ........
                                           00 01 09 21 2a a8 84 fc  3b c6 74 44 45 53 4b 54 |...!*... ;.tDESKT
                                           4f 50 2d 35 4e 44 41 4b  43 49                   |OP-5NDAK CI      
HL [00:01:31.560,821] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 55
HL [00:01:31.560,852] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x2001961c)
HL [00:01:31.560,852] <dbg> bt_hci_core: bt_recv: buf 0x2001961c len 57
HL [00:01:31.560,882] <dbg> bt_hci_core: rx_work_handler: Getting net_buf from queue
HL [00:01:31.560,882] <dbg> bt_hci_core: rx_work_handler: buf 0x2001961c type 1 len 57
HL [00:01:31.560,913] <dbg> bt_hci_core: hci_event: event 0x3e
HL [00:01:31.560,913] <dbg> bt_hci_core: hci_le_meta_event: subevent 0x0d
HL [00:01:31.560,913] <dbg> bt_scan: bt_hci_le_adv_ext_report: Adv number of reports 1
HL [00:01:31.561,004] <dbg> bt_scan: le_adv_recv: 25:FF:AA:2B:CE:07 (random) event 3, len 29, rssi -103 dBm
HL [00:01:31.561,065] <dbg> bt_keys: bt_keys_find_irk: 25:FF:AA:2B:CE:07 (random)
HL [00:01:31.561,126] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           00 29 00 00 78 0e 00 20  7f 9a 2d 00 40 72 07 00 |.)..x..  ..-.@r..
                                           05 00 00 00 b8 66 07 00  84 68 07 00 1c          |.....f.. .h...   
HL [00:01:31.621,765] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 3e 2b 0d 01 13 00 01  3a 09 70 c1 7a 72 01 00 |.>+..... :.p.zr..
                                           ff 7f b4 00 00 00 00 00  00 00 00 00 11 02 01 1a |........ ........
                                           02 0a 07 0a ff 4c 00 10  05 52 1c dd f8 19       |.....L.. .R....  
HL [00:01:31.621,765] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 43
HL [00:01:31.621,795] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x2001961c)
HL [00:01:31.621,795] <dbg> bt_hci_core: bt_recv: buf 0x2001961c len 45
HL [00:01:31.621,826] <dbg> bt_hci_core: rx_work_handler: Getting net_buf from queue
HL [00:01:31.621,826] <dbg> bt_hci_core: rx_work_handler: buf 0x2001961c type 1 len 45
HL [00:01:31.621,826] <dbg> bt_hci_core: hci_event: event 0x3e
HL [00:01:31.621,856] <dbg> bt_hci_core: hci_le_meta_event: subevent 0x0d
HL [00:01:31.621,856] <dbg> bt_scan: bt_hci_le_adv_ext_report: Adv number of reports 1
HL [00:01:31.621,948] <dbg> bt_scan: le_adv_recv: 72:7A:C1:70:09:3A (random) event 0, len 17, rssi -76 dBm
HL [00:01:31.622,009] <dbg> bt_keys: bt_keys_find_irk: 72:7A:C1:70:09:3A (random)
HL [00:01:31.622,100] <dbg> bt_keys: bt_keys_find_irk: No IRK for 72:7A:C1:70:09:3A (random)
HL [00:01:31.622,131] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           00 29 00 00 78 0e 00 20  ca c7 2d 00 03 36 46 3a |.)..x..  ..-..6F:
                                           05                                               |.                
HL [00:01:31.736,694] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 3e 39 0d 01 12 00 01  de 76 70 52 b3 4d 01 00 |.>9..... .vpR.M..
                                           ff 7f b8 00 00 00 00 00  00 00 00 00 1f 1e ff 4c |........ .......L
                                           00 07 19 01 0f 20 0b 55  8f 01 00 05 d8 ab b2 78 |..... .U .......x
                                           ef e1 98 35 65 eb a5 5f  a0 1d 06 22             |...5e.._ ..."    
HL [00:01:31.736,694] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 57
HL [00:01:31.736,724] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x2001961c)
HL [00:01:31.736,724] <dbg> bt_hci_core: bt_recv: buf 0x2001961c len 59
HL [00:01:31.736,755] <dbg> bt_hci_core: rx_work_handler: Getting net_buf from queue
HL [00:01:31.736,755] <dbg> bt_hci_core: rx_work_handler: buf 0x2001961c type 1 len 59
HL [00:01:31.736,755] <dbg> bt_hci_core: hci_event: event 0x3e
HL [00:01:31.736,785] <dbg> bt_hci_core: hci_le_meta_event: subevent 0x0d
HL [00:01:31.736,785] <dbg> bt_scan: bt_hci_le_adv_ext_report: Adv number of reports 1
HL [00:01:31.736,877] <dbg> bt_scan: le_adv_recv: 4D:B3:52:70:76:DE (random) event 2, len 31, rssi -72 dBm
HL [00:01:31.736,938] <dbg> bt_keys: bt_keys_find_irk: 4D:B3:52:70:76:DE (random)
HL [00:01:31.737,030] <dbg> bt_keys: bt_keys_find_irk: No IRK for 4D:B3:52:70:76:DE (random)
HL [00:01:31.737,060] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           00 31 00 00 78 0e 00 20  98 cf 2d 00 46 3a 44 32 |.1..x..  ..-.F:D2
                                           06 00 00 00 18 61 07 00  74 68 07 00 1c 96 01    |.....a.. th..... 
HL [00:01:31.749,481] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 3e 2d 0d 01 13 00 01  be 2e 30 fe ce 68 01 00 |.>-..... ..0..h..
                                           ff 7f bc 00 00 00 00 00  00 00 00 00 13 02 01 1a |........ ........
                                           02 0a 0c 0c ff 4c 00 10  07 7b 1f 2e 2c f5 ec 18 |.....L.. .{..,...
HL [00:01:31.749,481] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 45
HL [00:01:31.749,511] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x2001961c)
HL [00:01:31.749,511] <dbg> bt_hci_core: bt_recv: buf 0x2001961c len 47
HL [00:01:31.749,542] <dbg> bt_hci_core: rx_work_handler: Getting net_buf from queue
HL [00z01:31.749,542] <dbg> bt_hci_core: rx_work_handler: buf 0x2001961c type 1 len 47
HL [00:01:31.749,572] <dbg> bt_hci_core: hci_event: event 0x3e
HL [00:01:31.749,572] <dbg> bt_hci_core: hci_le_meta_event: subevent 0x0d
HL [00:01:31.749,572] <dbg> bt_scan: bt_hci_le_adv_ext_report: Adv number of reports 1
HL [00:01:31.749,664] <dbg> bt_scan: le_adv_recv: 68:CE:FE:30:2E:BE (random) event 0, len 19, rssi -68 dBm
HL [00:01:31.749,725] <dbg> bt_keys: bt_keys_find_irk: 68:CE:FE:30:2E:BE (random)
HL [00:01:31.749,816] <dbg> bt_keys: bt_keys_find_irk: No IRK for 68:CE:FE:30:2E:BE (random)
HL [00:01:31.749,877] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           4e de 2d 00 8c d8 00 20  03 00 00 00 f8 60 07 00 |N.-....  .....`..
                                           74 68 07                                         |th.              
HL [00:01:31.808,135] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 3e 10 0e 3e 00 00 00  01 84 1f 15 fb 21 e4 02 |.>..>... .....!..
                                           c0 03 07                                         |...              
HL [00:01:31.808,135] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 16
HL [00:01:31.808,166] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x200187f4)
HL [00:01:31.808,166] <dbg> bt_hci_core: bt_recv: buf 0x200187f4 len 18
HL [00:01:31.808,197] <dbg> bt_hci_core: rx_work_handler: Getting net_buf from queue
HL [00:01:31.808,197] <dbg> bt_hci_core: rx_work_handler: buf 0x200187f4 type 1 len 18
HL [00:01:31.808,227] <dbg> bt_hci_core: hci_event: event 0x3e
HL [00:01:31.808,227] <dbg> bt_hci_core: hci_le_meta_event: subevent 0x0e
HL [00:01:31.808,227] <dbg> bt_audio_broadcast_sink: pa_term: PA sync with broadcast source with ID 0x4A9FAF lost
HL [00:01:31.808,258] <err> bis_headset: Unexpected PA sync lost

What else needs to be modified in the bis headset to connect to the bis gateway that increased the sdu size?

RE: Maximum iso data length of NRF5340 audio increased

LandyWang — Tue, 11 Jun 2024 01:14:17 GMT

The NCS version I use is v2.2.0.

Here is the full log.

SEGGER J-Link V7.88j - Real time terminal output
SEGGER J-Link V9.7, SN=20722384
Process: JLink.exe
*** Booting Zephyr OS build v3.2.99-ncs1 ***


GW [00:00:00.001,922] <dbg> bt_hci_core: bt_hci_driver_register: Registered RPMsg
GW [00:00:00.002,807] <inf> fw_info: 
         nRF5340 Audio nRF5340 Audio DK cpuapp                      
         NCS base version: 2.2.0                            
         Cmake run : Tue Jun 11 09:11:00 2024
GW [00:00:00.002,807] <inf> fw_info: ------- DEBUG BUILD -------
GW [00:00:00.002,838] <inf> fw_info: Compiled for GATEWAY device
GW [00:00:00.002,838] <inf> ble: cw_uicr_get_32:ffffffff
GW [00:00:00.002,838] <inf> ble: cw_uicr_get_16:ffff
GW [00:00:00.002,929] <dbg> bt_hci_core: hci_tx_thread: Started
GW [00:00:00.002,929] <dbg> bt_conn: bt_conn_prepare_events: 
GW [00:00:00.002,960] <dbg> bt_hci_core: hci_tx_thread: Calling k_poll with 2 events
GW [00:00:00.003,112] <dbg> bt_hci_driver: bt_rpmsg_open: 
--- 836 messages dropped ---
GW [00:00:05.020,019] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           a4 34 05 00 01 10 00 00  00                      |.4...... .       
GW [00:00:06.019,592] <dbg> bt_hci_core: bt_hci_cmd_create: opcode 0x1001 param_len 0
GW [00:00:06.019,592] <dbg> bt_hci_core: bt_hci_cmd_create: buf 0x2001f0c8
GW [00:00:06.019,622] <dbg> bt_hci_core: bt_hci_cmd_send_sync: buf 0x2001f0c8 opcode 0x1001 len 3
GW [00:00:06.019,653] <dbg> bt_hci_core: process_events: count 4
GW [00:00:06.019,653] <dbg> bt_hci_core: process_events: ev->state 4
GW [00:00:06.019,683] <dbg> bt_hci_core: send_cmd: calling net_buf_get
GW [00:00:06.019,683] <dbg> bt_hci_core: send_cmd: calling sem_take_wait
GW [00:00:06.019,683] <dbg> bt_hci_core: send_cmd: Sending command 0x1001 (buf 0x2001f0c8) to driver
GW [00:00:06.019,714] <dbg> bt_hci_core: bt_send: buf 0x2001f0c8 len 3 type 0
GW [00:00:06.019,714] <dbg> bt_hci_driver: bt_rpmsg_send: buf 0x2001f0c8 type 0 len 3
GW [00:00:06.019,744] <dbg> bt_hci_driver: bt_rpmsg_send: Final HCI buffer:
                                           01 01 10 00                                      |....             
GW [00:00:06.019,775] <dbg> bt_hci_core: process_events: ev->state 0
GW [00:00:06.019,775] <dbg> bt_hci_core: process_events: ev->state 0
GW [00:00:06.019,775] <dbg> bt_hci_core: process_events: ev->state 0
GW [00:00:06.019,805] <dbg> bt_conn: bt_conn_prepare_events: 
GW [00:00:06.019,805] <dbg> bt_conn: conn_prepare_events: Adding conn 0x20002450 to poll list
GW [00:00:06.019,805] <dbg> bt_conn: conn_prepare_events: Adding conn 0x20002518 to poll list
GW [00:00:06.019,836] <dbg> bt_hci_core: hci_tx_thread: Calling k_poll with 4 events
GW [00:00:06.019,897] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 0e 0c 01 01 10 00 0b  ee 0c 0b e8 07 ee 0c    |........ ....... 
GW [00:00:06.019,897] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 12
GW [00:00:06.019,897] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x2001f0c8)
GW [00:00:06.019,927] <dbg> bt_hci_core: bt_recv: buf 0x2001f0c8 len 14
GW [00:00:06.019,927] <dbg> bt_hci_core: hci_cmd_complete: opcode 0x1001
GW [00:00:06.019,927] <dbg> bt_hci_core: hci_cmd_done: opcode 0x1001 status 0x00 buf 0x2001f0c8
GW [00:00:06.019,958] <dbg> bt_hci_core: bt_hci_cmd_send_sync: rsp 0x2001f0c8 opcode 0x1001 len 9
GW [00:00:06.020,019] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           01 31 00 00 00 0b 00 20  8e                      |.1.....  .       
GW [00:00:07.019,592] <dbg> bt_hci_core: bt_hci_cmd_create: opcode 0x1001 param_len 0
GW [00:00:07.019,622] <dbg> bt_hci_core: bt_hci_cmd_create: buf 0x2001f0c8
GW [00:00:07.019,622] <dbg> bt_hci_core: bt_hci_cmd_send_sync: buf 0x2001f0c8 opcode 0x1001 len 3
GW [00:00:07.019,653] <dbg> bt_hci_core: process_events: count 4
GW [00:00:07.019,653] <dbg> bt_hci_core: process_events: ev->state 4
GW [00:00:07.019,683] <dbg> bt_hci_core: send_cmd: calling net_buf_get
GW [00:00:07.019,683] <dbg> bt_hci_core: send_cmd: calling sem_take_wait
GW [00:00:07.019,683] <dbg> bt_hci_core: send_cmd: Sending command 0x1001 (buf 0x2001f0c8) to driver
GW [00:00:07.019,683] <dbg> bt_hci_core: bt_send: buf 0x2001f0c8 len 3 type 0
GW [00:00:07.019,714] <dbg> bt_hci_driver: bt_rpmsg_send: buf 0x2001f0c8 type 0 len 3
GW [00:00:07.019,714] <dbg> bt_hci_driver: bt_rpmsg_send: Final HCI buffer:
                                           01 01 10 00                                      |....             
GW [00:00:07.019,744] <dbg> bt_hci_core: process_events: ev->state 0
GW [00:00:07.019,775] <dbg> bt_hci_core: process_events: ev->state 0
GW [00:00:07.019,775] <dbg> bt_hci_core: process_events: ev->state 0
GW [00:00:07.019,775] <dbg> bt_conn: bt_conn_prepare_events: 
GW [00:00:07.019,805] <dbg> bt_conn: conn_prepare_events: Adding conn 0x20002450 to poll list
GW [00:00:07.019,805] <dbg> bt_conn: conn_prepare_events: Adding conn 0x20002518 to poll list
GW [00:00:07.019,805] <dbg> bt_hci_core: hci_tx_thread: Calling k_poll with 4 events
GW [00:00:07.019,866] <dbg> bt_hci_driver: bt_rpmsg_rx: RPMsg data:
                                           04 0e 0c 01 01 10 00 0b  ee 0c 0b e8 07 ee 0c    |........ ....... 
GW [00:00:07.019,866] <dbg> bt_hci_driver: bt_rpmsg_evt_recv: len 12
GW [00:00:07.019,897] <dbg> bt_hci_driver: bt_rpmsg_rx: Calling bt_recv(0x2001f0c8)
GW [00:00:07.019,897] <dbg> bt_hci_core: bt_recv: buf 0x2001f0c8 len 14
GW [00:00:07.019,897] <dbg> bt_hci_core: hci_cmd_complete: opcode 0x1001
GW [00:00:07.019,897] <dbg> bt_hci_core: hci_cmd_done: opcode 0x1001 status 0x00 buf 0x2001f0c8
GW [00:00:07.019,927] <dbg> bt_hci_core: bt_hci_cmd_send_sync: rsp 0x2001f0c8 opcode 0x1001 len 9
GW [00:00:07.019,958] <dbg> bt_hci_driver: bt_rpmsg_rx: RX buf payload:
                                           8e 02 03 00 0c 00 00 00  06                      |........ .       
GW [00:00:07.926,574] <inf> bt_iso: Max data len:120
GW [00:00:07.926,574] <inf> bt_iso: Max Controller data len:1536
GW [00:00:07.926,605] <inf> bt_iso: Cannot send 520 octets, maximum 120
GW [00:00:07.926,605] <wrn> bis_gateway: Failed to send audio data: -122
GW [00:00:07.926,605] <wrn> streamctrl: Problem with sending LE audio data, ret: -122
GW [00:00:07.936,584] <inf> bt_iso: Max data len:120
GW [00:00:07.936,584] <inf> bt_iso: Max Controller data len:1536
GW [00:00:07.936,584] <inf> bt_iso: Cannot send 520 octets, maximum 120
GW [00:00:07.936,584] <wrn> bis_gateway: Failed to send audio data: -122
GW [00:00:07.946,563] <inf> bt_iso: Max data len:120
GW [00:00:07.946,563] <inf> bt_iso: Max Controller data len:1536
GW [00:00:07.946,594] <inf> bt_iso: Cannot send 520 octets, maximum 120
GW [00:00:07.946,594] <wrn> bis_gateway: Failed to send audio data: -122
GW [00:00:07.956,573] <inf> bt_iso: Max data len:120
GW [00:00:07.956,573] <inf> bt_iso: Max Controller data len:1536
GW [00:00:07.956,604] <inf> bt_iso: Cannot send 520 octets, maximum 120
GW [00:00:07.956,604] <wrn> bis_gateway: Failed to send audio data: -122

RE: Maximum iso data length of NRF5340 audio increased

dejans — Fri, 07 Jun 2024 08:25:15 GMT

Hi,

Which NCS version do you use?

Can you show full log?

Best regards,
Dejan

RE: Maximum iso data length of NRF5340 audio increased

LandyWang — Thu, 06 Jun 2024 01:37:42 GMT

Yes, I use nrf5340_audio application, and I use USB in.

Here are my changes, I increased the data length when sending it.

[audio_system.c]

static void encoder_thread(void *arg1, void *arg2, void *arg3)
{
    ...
    if (sw_codec_cfg.encoder.enabled) {
			/* Send encoded data over IPM */
			//streamctrl_encoded_data_send(encoded_data, encoded_data_size);
			streamctrl_encoded_data_send(my_data, 520);
		}
	STACK_USAGE_PRINT("encoder_thread", &encoder_thread_data);
	}
}

And I added the max data related log to iso_chan_max_data_len function in iso.c.

[iso.c]

static uint16_t iso_chan_max_data_len(const struct bt_iso_chan *chan,
				      uint32_t ts)
{
	...
	/* Update the max_data_len to take the max_controller_data_len into account */
	max_data_len = MIN(max_data_len, max_controller_data_len);
	BT_INFO("Max data len:%d",max_data_len);
	BT_INFO("Max Controller data len:%d",max_controller_data_len);

	return max_data_len;
}

This is the config I added in prj.conf.

CONFIG_BT_ISO_TX_MTU=2048
CONFIG_BT_ISO_RX_MTU=2048

Then this is my error log.

GW [00:00:00.130,798] <inf> bis_gateway: Broadcast source 0x2000bc78 started
GW [00:00:00.131,134] <inf> bis_gateway: Broadcast source 0x2000bc9c started
GW [00:00:11.588,470] <inf> bt_iso: Max data len:120
GW [00:00:11.588,470] <inf> bt_iso: Max Controller data len:1536
GW [00:00:11.588,470] <inf> bt_iso: Cannot send 520 octets, maximum 120
GW [00:00:11.588,470] <wrn> bis_gateway: Failed to send audio data: -122
GW [00:00:11.588,500] <wrn> streamctrl: Problem with sending LE audio data, ret: -122

RE: Maximum iso data length of NRF5340 audio increased

dejans — Wed, 05 Jun 2024 11:56:00 GMT

Hi,

Do you use nrf5340_audio application? Can you show your changes?

Do you use I2S or USB?

Can you provide a full error log?

Best regards,
Dejan