BC127 A2DP stream does not start

IoT Modules
1

Hi guys,

I am facing problems with the A2DP stream of our BC127 modules.
It ramdomly happens, that when pressing play at the source device the A2DP stream does not start. I then have to delete the BC127 from the bluetooth list of the source device, usually it works again after this.

What I´ve also noticed, that this happens especially when streaming AAC(iPhone). I was not able to reproduce this problem with SBC.

My current config:

Melody Audio V7.3
Build: 1544637564

STATE CONNECTED[1] CONNECTABLE[ON] DISCOVERABLE[ON] BLE[OFF]
LINK 10 CONNECTED A2DP 940C98310003 SUSPENDED AAC SNK 44100
OK

LIST 940C98310003 A2DP AVRCP
LIST A01081247D84 A2DP AVRCP
LIST 94652DC98A6D A2DP AVRCP
OK

AUDIO=0 0
AUDIO_ANALOG=15 15 1 OFF
AUDIO_DIGITAL=0 48000 64 100200 OFF
AUTOCONN=0
AUTO_DATA=OFF OFF
BALANCE=100 100
BATT_CONFIG=OFF 145 4250 1500 150
BC_SMART_CONFIG=68E3 28F0 89F7 D93C
BEACON_DATA=0 00 11 22 33 44 55 66 77 88 99 AA BB CC DD EE FF 04 D2 16 2E EE
BLE_CONFIG=0 OFF 80 ON
BLE_CONN_PARAMS=128 12 24 40 0 400 100 400 400 64 400 400
BT_STATE_CONFIG=1 1
BT_VOL_CONFIG=A 60 10 1
CLASS_1=OFF
CMD_TO=20
COD=240404
CODEC=0 OFF
DEEP_SLEEP=OFF
DEVICE_ID=0001 0002 0003 0004 0005 0006 0007 0008
ENABLE_BATT_IND=OFF
ENABLE_LED=ON
ENABLE_SPP_SNIFF=OFF 0 0 0 0 0
GPIO_CONFIG=ON 0
HFP_CONFIG=OFF ON OFF OFF OFF OFF
HIGH_SPEED=OFF OFF
LOCAL_ADDR=20FABB1BB05F 000000000000
MAX_REC=2
MM=OFF OFF 0 OFF OFF OFF OFF OFF
MUSIC_META_DATA=OFF
MUSIC_OLD_AVRCP=OFF
NAME=bc127
NAME_SHORT=BC1BB05F
PIN=0000
PROFILES=0 0 2 0 0 0 0 0 0 0 0 0
REMOTE_ADDR=000000000000
SPP_UUID=00 00 11 01 00 00 10 00 80 00 00 80 5F 9B 34 FB
SSP_CAPS=3
TWS_CONFIG=OFF 1 2
UART_CONFIG=9600 OFF 0
USB_HOST=OFF
VREG_ROLE=1

Thanks in advance and beste regards
Josef

2

Hi @josef.fesl ,

Welcome to our community.
I’ve been using BC127 with my Iphone and no problems. Here is my default log, you can refer to:

Melody Audio V7.3
Build: 1544637564
Bluetooth addresses: 20FABB0191D1 6338A400AF94
Profiles: A2DP AVRCP HFP BLE SPP PBAP MAP TWS
Codecs: SBC

OK

STATE CONNECTED[1] CONNECTABLE[OFF] DISCOVERABLE[OFF] BLE[IDLE]
LINK 10 CONNECTED A2DP 2802446ED0F4 SUSPENDED SBC SNK 44100
LINK 11 CONNECTED AVRCP 2802446ED0F4 STOPPED
LINK 13 CONNECTED HFP 2802446ED0F4 IDLE NB

OK


LIST 2802446ED0F4 A2DP AVRCP HFP
LIST 6CF7845B7A84 A2DP AVRCP HFP
LIST 20FABB01908C A2DP AVRCP HFP
LIST AC5775611A68 A2DP AVRCP BLE HFP SPP
LIST A8913DDE9AEF A2DP AGHFP AVRCP
LIST 9800C6EB654A A2DP AVRCP HFP
LIST 84C7EA04304A A2DP AVRCP BLE HFP
LIST D013FDFBCCAB A2DP AVRCP HFP

OK


AUDIO=0 0
AUDIO_ANALOG=15 15 1 OFF
AUDIO_DIGITAL=0 44100 64 100A00 OFF
AUTOCONN=0
AUTO_DATA=OFF OFF
BALANCE=100 100
BATT_CONFIG=OFF 145 4250 1500 150
BC_SMART_CONFIG=68E3 28F0 89F7 D93C
BEACON_DATA=0 00 11 22 33 44 55 66 77 88 99 AA BB CC DD EE FF 04 D2 16 2E EE
BLE_CONFIG=0 OFF 80 ON
BLE_CONN_PARAMS=128 12 24 40 0 400 100 400 400 64 400 400
BT_STATE_CONFIG=0 0
BT_VOL_CONFIG=A 60 10 1
CLASS_1=OFF
CMD_TO=20
COD=240404
CODEC=0 OFF
DEEP_SLEEP=OFF
DEVICE_ID=0001 0002 0003 0004 0005 0006 0007 0008
ENABLE_BATT_IND=ON
ENABLE_LED=ON
ENABLE_SPP_SNIFF=OFF 0 0 0 0 0
GPIO_CONFIG=ON 0
HFP_CONFIG=OFF ON OFF OFF OFF OFF
HIGH_SPEED=OFF OFF
LOCAL_ADDR=20FABB0191D1 7AC49C32CC93
MAX_REC=2
MM=OFF OFF 0 OFF OFF OFF OFF OFF
MUSIC_META_DATA=OFF
MUSIC_OLD_AVRCP=OFF
NAME=BC-0191D1
NAME_SHORT=BC0191D1
PIN=0000
PROFILES=2 0 2 0 2 3 2 1 0 0 1 0
REMOTE_ADDR=000000000000
SPP_UUID=00 00 11 01 00 00 10 00 80 00 00 80 5F 9B 34 FB
SSP_CAPS=3
TWS_CONFIG=OFF 1 2
UART_CONFIG=9600 OFF 0
USB_HOST=OFF
VREG_ROLE=1

OK

Thanks,