How to play PCM data in nRF5340 Audio-DK ?

RE: How to play PCM data in nRF5340 Audio-DK ?

Maria Gilje — Thu, 29 Aug 2024 12:50:34 GMT

Hi PSR,

[quote user="PSR"] <inf> audio_datapath: drift_comp_state_set: Drft comp state: CALIB
<inf> audio_datapath: drift_comp_state_set: Drft comp state: OFFSET
<inf> audio_datapath: drift_comp_state_set: Drft comp state: LOCKED
<inf> audio_datapath: pres_comp_state_set: Pres comp state: MEAS
<inf> audio_datapath: pres_comp_state_set: Pres comp state: WAIT
<inf> audio_datapath: pres_comp_state_set: Pres comp state: INIT
<inf> audio_datapath: pres_comp_state_set: Pres comp state: MEAS
<inf> audio_datapath: pres_comp_state_set: Pres comp state: LOCKED[/quote]

This part of the log indicates that the headset is able to sync to a stream. When you say that you are not able to get the stream, what are you observing, specifically?

Best regards,

Maria

RE: How to play PCM data in nRF5340 Audio-DK ?

PSR — Wed, 21 Aug 2024 07:51:55 GMT

Hi Maria,

Could please review the logs.

<inf> main: bt_mgmt_evt_handler: Connected
<inf> bt_mgmt: connected_cb: ACL connection Connected: FD:9C:D5:71:5E:A6 (random)
<inf> main: bt_mgmt_evt_handler: Connected
<inf> main: bt_mgmt_evt_handler: Security changed
<inf> main: bt_mgmt_evt_handler: Security changed
<dbg> bt_ascs: ascs_ase_read: conn 0x20003e30 attr 0x938c0 buf 0x20021f42 len 64 offset 0
<dbg> bt_ascs: ascs_ase_read_status_idle: conn 0x20003e30 id 0x01
<dbg> bt_ascs: ascs_ase_cfg_changed: attr 0x938d4 value 0x0001
<dbg> bt_ascs: ascs_cp_cfg_changed: attr 0x93898 value 0x0001
<dbg> bt_ascs: ascs_ase_read: conn 0x20003e30 attr 0x938c0 buf 0x20021f42 len 64 offset 0
<dbg> bt_ascs: ascs_ase_read_status_idle: conn 0x20003e30 id 0x01
<dbg> bt_ascs: ascs_ase_cfg_changed: attr 0x938d4 value 0x0001
<dbg> bt_ascs: ascs_cp_cfg_changed: attr 0x93898 value 0x0001
<dbg> bt_ascs: ascs_ase_read: conn 0x20003e30 attr 0x938fc buf 0x20021f42 len 64 offset 0
<dbg> bt_ascs: ascs_ase_read_status_idle: conn 0x20003e30 id 0x02
<dbg> bt_ascs: ascs_ase_cfg_changed: attr 0x93910 value 0x0001
<dbg> bt_ascs: ascs_cp_write: conn 0x20003e30 attr 0x93884 buf 0x20020b44 len 27 op Config Codec (0x01)
<dbg> bt_ascs: ascs_config: num_ases 1
<dbg> bt_ascs: ascs_config: ase 0x01 cc_len 16
<dbg> bt_ascs: ascs_ep_init: ep 0x20004a74 id 0x01
<dbg> bt_ascs: ase_new: conn 0x20003e30 new ase 0x20004a70 id 0x01
<dbg> bt_ascs: ase_config: ase 0x20004a70 latency 0x02 phy 0x02 codec 0x06 cid 0x0000 vid 0x0000 codec config len 0x10
<dbg> bt_ascs: ascs_ep_set_codec: ep 0x20004a74 dir sink codec id 0x06 cid 0x0000 vid 0x0000 len 16
<inf> unicast_server: print_codec: LC3 codec config for sink:
--- 10 messages dropped ---
<inf> main: le_audio_msg_sub_thread: LE audio config received
<inf> main: le_audio_msg_sub_thread: Sampling rate: 16000 Hz
--- 10 messages dropped ---
<dbg> bt_ascs: ascs_ase_read: conn 0x20003e30 attr 0x938fc buf 0x20021f42 len 64 offset 0
<dbg> bt_ascs: ascs_ase_read_status_idle: conn 0x20003e30 id 0x02
<dbg> bt_ascs: ascs_ase_cfg_changed: attr 0x93910 value 0x0001
<dbg> bt_ascs: ascs_cp_write: conn 0x20003e30 attr 0x93884 buf 0x20020b44 len 27 op Config Codec (0x01)
<dbg> bt_ascs: ascs_config: num_ases 1
<dbg> bt_ascs: ascs_config: ase 0x01 cc_len 16
<dbg> bt_ascs: ascs_ep_init: ep 0x20004a74 id 0x01
<dbg> bt_ascs: ase_new: conn 0x20003e30 new ase 0x20004a70 id 0x01
<dbg> bt_ascs: ase_config: ase 0x20004a70 latency 0x02 phy 0x02 codec 0x06 cid 0x0000 vid 0x0000 codec config len 0x10
<dbg> bt_ascs: ascs_ep_set_codec: ep 0x20004a74 dir sink codec id 0x06 cid 0x0000 vid 0x0000 len 16
<inf> unicast_server: print_codec: LC3 codec config for sink:
<inf> main: le_audio_msg_sub_thread: LE audio config received
<inf> main: le_audio_msg_sub_thread: Sampling rate: 16000 Hz
<inf> main: le_audio_msg_sub_thread: Bitrate (compressed): 32000 bps
--- 21 messages dropped ---
<dbg> bt_ascs: ascs_cp_write: conn 0x20003e30 attr 0x93884 buf 0x20020b44 len 34 op Config QoS (0x02)
--- 7 messages dropped ---
<dbg> bt_ascs: ase_stream_qos: stream 0x20010258 ep 0x20004a74 qos 0x2001cc30
<dbg> bt_ascs: ascs_cp_rsp_add: id 0x01 code Success (0x00) reason None (0x00)
<dbg> bt_ascs: ascs_ep_get_status: ep 0x20004b6c id 0x02 state qos-configured
<dbg> bt_ascs: ascs_ep_get_status_qos: dir source codec id 0x06 interval 10000 framing 0x00 phy 0x02 rtn 2 latency 10 pd 40000
<dbg> bt_ascs: state_transition_work_handler: ase 0x20004b68 id 0x02 codec-configured -> qos-configured
<dbg> bt_ascs: ascs_ep_get_status: ep 0x20004a74 id 0x01 state qos-configured
<dbg> bt_ascs: ascs_ep_get_status_qos: dir sink codec id 0x06 interval 10000 framing 0x00 phy 0x02 rtn 2 latency 10 pd 40000
<dbg> bt_ascs: state_transition_work_handler: ase 0x20004a70 id 0x01 codec-configured -> qos-configured
<inf> main: le_audio_msg_sub_thread: Received event = 2, current state = 1
--- 28 messages dropped ---
<inf> main: le_audio_msg_sub_thread: Bitrate (compressed): 32000 bps
<dbg> bt_ascs: ascs_cp_write: conn 0x20003e30 attr 0x93884 buf 0x20020b44 len 34 op Config QoS (0x02)
<dbg> bt_ascs: ase_stream_qos: stream 0x20010258 ep 0x20004a74 qos 0x2001cc30
<dbg> bt_ascs: ascs_cp_rsp_add: id 0x01 code Success (0x00) reason None (0x00)
<dbg> bt_ascs: ascs_ep_get_status: ep 0x20004b6c id 0x02 state qos-configured
<dbg> bt_ascs: ascs_ep_get_status_qos: dir source codec id 0x06 interval 10000 framing 0x00 phy 0x02 rtn 2 latency 10 pd 40000
<dbg> bt_ascs: state_transition_work_handler: ase 0x20004b68 id 0x02 codec-configured -> qos-configured
<dbg> bt_ascs: ascs_ep_get_status: ep 0x20004a74 id 0x01 state qos-configured
<dbg> bt_ascs: ascs_ep_get_status_qos: dir sink codec id 0x06 interval 10000 framing 0x00 phy 0x02 rtn 2 latency 10 pd 40000
<dbg> bt_ascs: state_transition_work_handler: ase 0x20004a70 id 0x01 codec-configured -> qos-configured
<inf> main: le_audio_msg_sub_thread: Received event = 2, current state = 1
<inf> main: le_audio_msg_sub_thread: Presentation delay 40000 us is set by initiator
<inf> main: le_audio_msg_sub_thread: Received event = 2, current state = 1
<inf> main: le_audio_msg_sub_thread: Presentation delay 40000 us is set by initiator
<dbg> bt_ascs: ascs_cp_write: conn 0x20003e30 attr 0x93884 buf 0x20020b44 len 8 op Enable (0x03)
<dbg> bt_ascs: ascs_enable: num_ases 1
<dbg> bt_ascs: ase_enable: ase 0x20004a70 meta->len 4
<dbg> bt_ascs: ascs_parse_metadata: type 0x02 len 2
<dbg> bt_ascs: ascs_cp_rsp_add: id 0x01 code Success (0x00) reason None (0x00)
<dbg> bt_ascs: ascs_ep_get_status: ep 0x20004a74 id 0x01 state enabling
<dbg> bt_ascs: ascs_ep_get_status_enable: dir sink cig 0x00 cis 0x00
<dbg> bt_ascs: state_transition_work_handler: ase 0x20004a70 id 0x01 qos-configured -> enabling
<dbg> bt_ascs: ascs_cp_write: conn 0x20003e30 attr 0x93884 buf 0x20020b44 len 8 op Enable (0x03)
<dbg> bt_ascs: ascs_enable: num_ases 1
<inf> main: le_audio_msg_sub_thread: Presentation delay 40000 us is set by initiator
<inf> main: le_audio_msg_sub_thread: Received event = 2, current state = 1
<inf> main: le_audio_mHL [00:00:08.563,171] <dbg> bt_ascs: ase_enable: ase 0x20004b68 meta->len 4
<dbg> bt_ascs: ascs_parse_metadata: type 0x02 len 2
sg_sub_thread: Presentation delay 40000 us is set by initiator
<dbg> bt_ascs: ascs_cp_write: conHL [00:00:08.563,232] <dbg> bt_ascs: ascs_cp_rsp_add: id 0x02 code Success (0x00) reason None (0x00)
n 0x20003e30 attr 0x93884 buf 0x20020b44 len 8 op Enable (0x03)
<dbg> bt_ascs: ascs_enable: num_ases 1
<dbg> bt_ascs: ase_enable: ase 0x20004a70 meta->len 4
<dbg> bt_ascs: ascs_parse_metadata: type 0x02 len 2
<dbg> bt_ascs: ascs_cp_rsp_add: id 0x01 code Success (0x00) reason None (0x00)
<dbg> bt_ascs: ascs_ep_get_status: ep 0x20004a74 id 0x01 state enabling
<dbg> bt_ascs: ascs_ep_get_status_enable: dir sink cig 0x00 cis 0x00
<dbg> bt_ascs: state_transition_work_handler: ase 0x20004a70 id 0x01 qos-configured -> enabling
<dbg> bt_ascs: ascs_cp_write: conn 0x20003e30 attr 0x93884 buf 0x20020b44 len 8 op Enable (0x03)
<dbg> bt_ascs: ascs_enable: num_ases 1
<dbg> bt_ascs: ase_enable: ase 0x20004b68 meta->len 4
<dbg> bt_ascs: ascs_parse_metadata: type 0x02 len 2
<dbg> bt_ascs: ascs_cp_rsp_add: id 0x02 code Success (0x00) reason None (0x00)
<dbg> bt_ascs: ascs_ep_get_status: ep 0x20004b6c id 0x02 state enabling
--- 6 messages dropped ---
<dbg> bt_ascs: ascs_ep_get_status: ep 0x20004a74 id 0x01 state streaming
<dbg> bt_ascs: ascs_ep_get_status_enable: dir sink cig 0x00 cis 0x00
<dbg> bt_ascs: state_transition_work_handler: ase 0x20004a70 id 0x01 enabling -> streaming
<inf> unicast_server: stream_started_cb: Stream 0x20010258 started
<inf> main: le_audio_msg_sub_thread: Received event = 3, current state = 1
<inf> main: le_audio_msg_sub_thread: LE audio evt streaming
<inf> audio_system: audio_headset_configure: audio_headset_configure
<wrn> le_audio_rx: le_audio_rx_data_handler: Not in streaming state, throwing data: 1
<wrn> le_audio_rx: le_audio_rx_data_handler: Not in streaming state, throwing data: 1
<wrn> audio_datapath: audio_datapath_i2s_blk_complete: I2S RX overrun. Single msg
<wrn> audio_datapath: audio_datapath_i2s_blk_complete: Data received, total under-runs: 10
<dbg> bt_ascs: ascs_cp_write: conn 0x20003e30 attr 0x93884 buf 0x20020b44 len 3 op Receiver Start Ready (0x04)
<dbg> bt_ascs: ascs_start: num_ases 1
--- 6 messages dropped ---

<dbg> bt_ascs: ascs_ep_get_status: ep 0x20004b6c id 0x02 state enabling
<dbg> bt_ascs: ascs_start: ase 0x02
<dbg> bt_ascs: ase_start: ase 0x20004b68
<dbg> bt_ascs: ascs_ep_get_status: ep 0x20004a74 id 0x01 state streaming
<dbg> bt_ascs: ascs_ep_get_status_enable: dir sink cig 0x00 cis 0x00
<dbg> bt_ascs: ascs_cp_rsp_add: id 0x02 code Success (0x00) reason None (0x00)
<dbg> bt_ascs: ascs_ep_get_status: ep 0x20004b6c id 0x02 state streaming
<dbg> bt_ascs: state_transition_work_handler: ase 0x20004a70 id 0x01 enabling -> streaming
<dbg> bt_ascs: ascs_ep_get_status_enable: dir source cig 0x00 cis 0x00
unicast_server: stream_started_cb: Stream 0x20010258 started
<inf> main: le_audio_msg_sub_thread: Received event = 3, current state = 1
<inf> main: le_audio_msg_sub_thread: LE audio evt streamHL [00:00:09.013,519] <dbg> bt_ascs: state_transition_work_handler: ase 0x20004b68 id 0x02 enabling -> streaming
<inf> audio_system: audio_headset_configure: audio_headset_configure
<inf> unicast_server: stream_started_cb: Stream 0x2001027c started
<inf> main: le_audio_msg_sub_thread: Received event = 3, current state = 0
<wrn> le_audio_rx: le_audio_rx_data_handler: Not in streaming state, throwing data: 1
<inf> main: le_audio_msg_sub_thread: LE audio evt streaming
<wrn> le_audio_rx: le_audio_rx_data_handler: Not in streaming state, throwing data: 1
<wrn> audio_datapath: audHL [00:00:09.013,763] <inf> audio_system: audio_system_encoder_start: Encoder started
io_datapath_i2s_blk_complete: I2S RX overrun. Single msg
<wrn> audio_datapath: audio_datapath_i2s_blk_complete: I2S RX continuing stream
<wrn> audio_datapath: audio_datapath_i2s_blk_complete: Data received, total under-runs: 10
<wrn> audio_datapath: audio_datapath_i2s_blk_complete: Data received, total under-runs: 12
<dbg> bt_ascs: ascs_cp_write: conn 0x20003e30 attr 0x93884 buf 0x20020b44 len 3 op Receiver Start Ready (0x04)<dbg> bt_ascs: ascs_start: num_ases 1
<inf> audio_datapath: drift_comp_state_set: Drft comp state: CALIB
<inf> audio_datapath: drift_comp_state_set: Drft comp state: OFFSET
<inf> audio_datapath: drift_comp_state_set: Drft comp state: LOCKED
<dbg> bt_ascs: ascs_start: ase 0x02
<dbg> bt_ascs: ase_start: ase 0x20004b68
<inf> audio_datapath: pres_comp_state_set: Pres comp state: MEAS
<inf> audio_datapath: pres_comp_state_set: Pres comp state: WAIT
<dbg> bt_ascs: ascs_cp_rsp_add: id 0x02 code Success (0x00) reason None (0x00)
<dbg> bt_ascs: ascs_ep_get_status: ep 0x20004b6c id 0x02 state streamingHL [00:00:09.944,824] <inf> audio_datapath: pres_comp_state_set: Pres comp state: INIT

<dbg> bt_ascs: ascs_ep_get_status_enable: dir sHL [00:00:09.954,803] <inf> audio_datapath: pres_comp_state_set: Pres comp state: MEAS
ource cig 0x00 cis 0x00
<dbg> bt_ascs: state_transition_work_handler: ase 0x20004b68 id 0x02 enabling -> streaming <inf> unicast_server: stream_started_cb: Stream 0x2001027c started
<inf> main: le_audio_msg_sub_thread: Received event = 3, current state = 0
<inf> main: le_audio_msg_sub_thread: LE audio evt streaming
<inf> audio_system: audio_system_encoder_start: Encoder started
<wrn> audio_datapath: audio_datapath_i2s_blk_complete: I2S RX continuing stream
<wrn> audio_datapath: audio_datapath_i2s_blk_complete: Data received, total under-runs: 12
<inf> audio_datapath: drift_comp_state_set: Drft comp state: CALIB
<inf> audio_datapath: drift_comp_state_set: Drft comp state: OFFSET
<inf> audio_datapath: drift_comp_state_set: Drft comp state: LOCKED
<inf> audio_datapath: pres_comp_state_set: Pres comp state: MEAS
<inf> audio_datapath: pres_comp_state_set: Pres comp state: WAIT
<inf> audio_datapath: pres_comp_state_set: Pres comp state: INIT
<inf> audio_datapath: pres_comp_state_set: Pres comp state: MEAS
<inf> audio_datapath: pres_comp_state_set: Pres comp state: LOCKED
<inf> audio_datapath: pres_comp_state_set: Pres comp state: LOCKED

Thanks,

PSR.

RE: How to play PCM data in nRF5340 Audio-DK ?

PSR — Tue, 20 Aug 2024 09:03:11 GMT

Hi Maria,

lc3_ret = lc3_encode(lc3_encoder, LC3_PCM_FORMAT_S16, audio_buff, 1, octets_per_frame, net_buffer + offset); is the function.

I want to change the AudioBuff PCM data every time. Is there a way to change the PCM data every 10 milliseconds?

RE: How to play PCM data in nRF5340 Audio-DK ?

Maria Gilje — Tue, 20 Aug 2024 08:52:12 GMT

Hi PSR,

[quote user="PSR"]

audio buffer of dmic is given to lc3 encode function is

[/quote]

In the sceenshot it looks like the end parenthesis is missing, but it is difficult to say for sure from a screen shot.

Can you include the code snippet for this? (Insert -> Code)

[quote user="PSR"] but other side(audio DK), I'm not getting Audio Stream.[/quote]

Please share the device logs (Insert -> Code).

Best regards,

Maria

RE: How to play PCM data in nRF5340 Audio-DK ?

PSR — Fri, 16 Aug 2024 12:32:27 GMT

Hi Maria,

Both Boards are communicated getting beep sound,

Now, i integrated dmic Sample in unicast audio client, PCM audio buffer of dmic is given to lc3 encode function is

but other side(audio DK), I'm not getting Audio Stream.

Thanks,

PSR.

RE: How to play PCM data in nRF5340 Audio-DK ?

Maria Gilje — Fri, 16 Aug 2024 12:21:52 GMT

Hello,

Apologies for the wait.

[quote user="PSR"]Audio Stream 0x20003ca4 enabled [/quote]

Is this the last logging you get?

I tried to reproduce it with unicast audio client as is and with

CONFIG_BT_BAP_UNICAST_16_2_1=y
CONFIG_AUDIO_SOURCE_I2S=y

in prj.conf and building the audio application for the headset device.

In this case the stream was successfully enabled like in your log. In my case, one stream was configured, and it was also started shortly after it was enabled.

This is my log after yours ends. Before this, they are equivalent:

Audio Stream 0x20003c2c enabled
Streams enabled
Starting streams
Audio Stream 0x20003c2c started
Streams started
LC3 encode 2 frames in 2 SDUs
  TX LC3 l on streams[40]: 0
  TX LC3 l on streams[40]: 0

Which changes have you made to unicast audio client?

Best regards,

Maria

RE: How to play PCM data in nRF5340 Audio-DK ?

PSR — Wed, 07 Aug 2024 14:55:49 GMT

Hi Nordic,

I was shared the nRF5340 Dk unicast audio client, In nRF5340 Audio Dk board i'm sharing , in that i'm getting error as Enable rejected,

could you please help on this to rectify the error.

Thanks.

PSR

RE: How to play PCM data in nRF5340 Audio-DK ?

PSR — Tue, 06 Aug 2024 12:31:11 GMT

Hi Maria,

could you please respond anyone as soon as possible.

I followed this link is (Missing Forum Thread)

The nRF5340 DK is configured as a unicast audio client, and the nRF5340 audio DK is set up as a headset. However, I'm unable to get the sample audio from audio dk board, having trouble setting the QoS.

Could you please verify the attached logs?

Device found: 79:00:28:91:EE:A9 (random) (RSSI -59)
Device found: 87:4B:17:8F:AF:F1 (public) (RSSI -96)
Device found: C8:08:05:C6:4E:EA (random) (RSSI -74)
Device found: 48:61:DD:6C:D9:32 (random) (RSSI -84)
Device found: 4F:C2:F5:AE:7F:1D (random) (RSSI -45)
[AD]: 1 data_len 1
[AD]: 10 data_len 1
[AD]: 255 data_len 10
Device found: 04:7F:0E:C5:46:7B (public) (RSSI -95)
Device found: 79:00:28:91:EE:A9 (random) (RSSI -55)
Device found: 87:4B:17:8F:AF:F1 (public) (RSSI -96)
Device found: 4F:C2:F5:AE:7F:1D (random) (RSSI -45)
[AD]: 1 data_len 1
[AD]: 10 data_len 1
[AD]: 255 data_len 10
Device found: 86:99:6C:5F:EF:F5 (public) (RSSI -98)
Device found: 04:7F:0E:C5:46:7B (public) (RSSI -95)
Device found: 79:00:28:91:EE:A9 (random) (RSSI -50)
[AD]: 2 data_len 4
[AD]: 22 data_len 8
status=0
Audio server found with type 1, contexts 0x00030007 and meta_len 0; connecting
status=0
status=0
MTU exchanged: 23/23
Connected: 79:00:28:91:EE:A9 (random)
status=0
status=0
MTU exchanged: 65/247
status=0
status=0
Connected
Discovering sinks
codec_cap 0x20006900 dir 0x01
codec id 0x06 cid 0x0000 vid 0x0000 count 19
data: type 0x01 value_len 2
9400
data: type 0x02 value_len 1
22
data: type 0x03 value_len 1
01
data: type 0x04 value_len 4
28007800
data: type 0x05 value_len 1
01
meta: type 0x01 value_len 2
0700
dir 1 loc 1
snk ctx 5 src ctx 0
Sink #0: ep 0x20003370
Discover sinks complete: err 0
Sinks discovered
Discovering sources
codec_cap 0x20006900 dir 0x02
codec id 0x06 cid 0x0000 vid 0x0000 count 19
data: type 0x01 value_len 2
9400
data: type 0x02 value_len 1
22
data: type 0x03 value_len 1
01
data: type 0x04 value_len 4
28007800
data: type 0x05 value_len 1
01
meta: type 0x01 value_len 2
0300
dir 2 loc 0
snk ctx 5 src ctx 0
Source #0: ep 0x20003540
Discover sources complete: err 0
Sources discovered
Configuring streams
Audio Stream 0x20003ca4 configured
Configured sink stream[0]
Audio Stream 0x20003ccc configured
Configured source stream[0]
Creating unicast group
status=0
Unicast group created
Setting stream QoS
QoS: waiting for 2 streams
128: 28304
--- 133 messages dropped ---
129: 29397
130: 29766
131: 29403
132: 28315
133: 26530
134: 24092
135: 21061
136: 17511
137: 13530
138: 9216
139: 4675
140: 19
141: -4637
142: -9179
143: -13496
144: -17480
145: -21034
146: -24070
147: -26513
148: -28303
149: -29397
150: -29766
151: -29403
152: -28316
153: -26532
154: -24094
155: -21063
156: -17513
157: -13533
158: -9219
159: -4678
Audio Stream 0x20003ca4 enabled

RE: How to play PCM data in nRF5340 Audio-DK ?

PSR — Thu, 01 Aug 2024 12:45:09 GMT

Hi Maria,

I am receiving PCM hex data on the nRF5340 DK board.

Can I transfer this PCM data to the nRF5340 Audio DK?

Will I be able to get audio from the nRF5340 Audio DK?

RE: How to play PCM data in nRF5340 Audio-DK ?

PSR — Wed, 31 Jul 2024 07:17:27 GMT

Hi Maria,

I have only one nRF5340 Audio DK board. Can it work with both a microphone (input) and a headset (output) for audio at a time?

Thank you!

RE: How to play PCM data in nRF5340 Audio-DK ?

Maria Gilje — Wed, 31 Jul 2024 07:03:04 GMT

You can transfer the data wired over I2S and wireless with LE Audio. We don't have a simple example which demonstrates this, but the nRF5340 Audio application uses both methods. PCM data is transfered over I2S from the CS47L63 to the nRF5340 on the nRF5340 Audio DK.

RE: How to play PCM data in nRF5340 Audio-DK ?

PSR — Wed, 31 Jul 2024 06:43:12 GMT

Hi Maria,

I'm currently working with PCM data from the nRF5340 DK and I want to play audio on the nRF5340 Audio board. Could you advise on which communication method I should use? Additionally, could you please provide any sample code for this?

Thank you!

RE: How to play PCM data in nRF5340 Audio-DK ?

Maria Gilje — Wed, 31 Jul 2024 06:35:04 GMT

HI PSR,

Apologies for the lack of response so far.

Does your use-case require LE Audio, or do you want to get and play the PCM data on the same device?

For the LE Audio case, you can refer to the audio_system and audio_datapath files in nrf5340_audio/src/audio.

You can still refer to parts of the Audio application for the local case and use the unicast server or the broadcast sink. The CIS bidirectional walkie-talkie demo both records and plays audio: it records audio and transmits it to the peer device and it receives audio and plays it.

Best regards,

Maria

RE: How to play PCM data in nRF5340 Audio-DK ?

PSR — Fri, 26 Jul 2024 10:37:08 GMT

can any one respond on this.

Thanks& Regards

PSR.