（盈鹏飞嵌入式T113-S4主板）-BT蓝牙播放（RTL8723DU)音乐功能测试

SBC-T113S产品特性：

• 采用Allwinner公司Cortex-A7双核T113-S3/S4处理器，运行最高速度为1.2GHZ；
• 内置64-bit XuanTie C906 RISC-V协处理器(仅T113-S4支持)；
• 支持JPEG/MJPEG视频编码，最大分辨率1080p@60fps；支持多格式1080P@60fps视频解码 (H.265,H.264, MPEG-1/2/4)；
• 支持RGB666/LVDS/MIPI-DSI，分辨率最高1920x1080；
• 支持128-256M Bytes DDR3 SDRAM,其中T113-S3内置128MB;T113-S4内置256MB；
• 支持SPI NAND存储和启动(默认：256MB)或者EMMC启动(默认：4GB,最大32GB)；
• 支持一路USB2.0 OTG(设计为TYPE-A接口)；支持二路USB2.0 HOST;
• 支持七路RS232通信或者6路RS232和1路RS485(非隔离)；
• 支持一路CAN BUS通信（非隔离）；
• 支持一路10/100M以太网；
• 稳定的操作系统的支持，可预装LINUX 5.4（Preempt）或者OpenWRT；
• 经典尺寸主板，尺寸为120*100MM；

SBC-T113S产品功能评估图：

使用主板蓝牙播放音乐 

对蓝牙设备进行配对连接后，还要判断是否正常连接。通常使用l2ping指令来判断，指令执行如下：

root@T113-Embfly:~# l2ping -f -s 512 -c 10 -t 1 F4:4E:FD:3B:95:A6

Ping: F4:4E:FD:3B:95:A6 from 40:80:E1:F1:BE:0C (data size 512) ...

[ 3279.159111] rtk_btcoex: update_hid_active_state: handle 0x0003, interval 0

[ 3279.166985] rtk_btcoex: HID not connected, nothing to be down

512 bytes from F4:4E:FD:3B:95:A6[ 3279.173466] rtk_btcoex: update_hid_active_state: handle 0x0003, interval 0

 id 0 time 528.15ms

[ 3279.184013] rtk_btcoex: HID not connected, nothing to be down

512 bytes from F4:4E:FD:3B:95:A6 id 1 time 49.30ms

512 bytes from F4:4E:FD:3B:95:A6 id 2 time 32.41ms

512 bytes from F4:4E:FD:3B:95:A6 id 3 time 32.44ms

512 bytes from F4:4E:FD:3B:95:A6 id 4 time 32.44ms

512 bytes from F4:4E:FD:3B:95:A6 id 5 time 32.45ms

512 bytes from F4:4E:FD:3B:95:A6 id 6 time 32.46ms

512 bytes from F4:4E:FD:3B:95:A6 id 7 time 32.45ms

512 bytes from F4:4E:FD:3B:95:A6 id 8 time 32.46ms

512 bytes from F4:4E:FD:3B:95:A6 id 9 time 32.46ms

10 sent, 10 received, 0% loss

root@T113-Embfly:~#

l2ping的指令这里不做详细介绍，需要了解的可以baidu.com。

为了方便演示音乐的播放，在/embfly_test目录下提供了一个播放音乐脚本bt_play_source.sh，脚本内容如下：

#!/bin/sh

############################################################

# file bt_play_source.sh

# version 0.0.1

# date 2018-05-06

#

############################################################

#insmod /lib/modules/4.9.170/xradio_btlpm.ko

bt_clear()

{

    killall -9 hciattach

    killall -9 bluetoothd

    killall -9 bluetoothctl

    hciconfig hci0 down

#   echo 0 > /sys/class/rfkill/rfkill0/state

}

echo $#

if [ $# -lt 1 ]; then

    echo "less arams"

    echo "example: bt_init.sh Mi10S"

    exit

fi

BT_NAME=$1

# reset bt

#echo "reset bt"

#echo 0 > /sys/class/rfkill/rfkill0/state

#sleep 1

#echo 1 > /sys/class/rfkill/rfkill0/state

#sleep 1

# bt bind uart

#echo "bt bind uart"

#hciattach -n ttyS1 xradio > /dev/null 2>&1 &

#sleep 8

# bt power on

echo "bt power on"

hciconfig hci0 up   

hciconfig hci0 piscan

# bt scan

echo "bt scan"

i=0

while [ $i -le 5 ]

do

    echo "scan $i times"

    str=`hcitool scan | grep $BT_NAME`

    echo $str

    if [ "x$str" != "x" ]; then

       echo "find $BT_NAME"

       break;

    fi

    let i++

done  

if [ $i -ge 5 ]; then

    echo "no find $BT_NAME"

    bt_clear

    exit

fi

array=(${str// / })

i=0

BT_MAC=""

for var in ${array[@]}

do

    echo $i $var

    if [ $i -eq 0 ]; then

           BT_MAC=$var

    fi

    let i++

done

echo "BT_MAC: $BT_MAC"

# bluetoothd service

bluetoothd -n &

bluealsa -p a2dp-source &

#str=`bluetoothctl scan on | grep Mi10S`

echo "scan on"

bluetoothctl scan on &

sleep 8

bluetoothctl scan off

killall -9 bluetoothctl

if [ ! -e /tmp/.bt ]; then

    bluetoothctl trust $BT_MAC

    bluetoothctl pair $BT_MAC

    touch /tmp/.bt

fi

bluetoothctl connect $BT_MAC

sleep 5

aplay -D bluealsa:DEV=$BT_MAC /embfly_test/wfxy.wav

#aplay -D bluealsa:HCI=hci0,DEV=$BT_MAC,PROFILE=A2DP /embfly_test/wfxy.wav

测试BT音频的音箱是EDIFIER M350，它支持BT4.2，而SBC-T113S主板配置的WIFI模块(RTL8723DU)也是支持BT4.2，两者可以正常通信，播放音乐的指令如下：

root@T113-Embfly:/embfly_test# ./bt_play_source.sh EDIFIER M350

2

bt power on

[12258.705313] rtk_btusb: btusb_open start

[12258.709667] rtk_btusb: btusb_open hdev->promisc ==0

[12258.715185] rtk_btusb: download_patch start

[12258.719956] rtk_btusb: chip type value: 0x71

[12258.725961] rtk_btusb: chip_type->status = 0x0, chip_type->chip = 0xbeef

[12258.733620] rtk_btusb: HCI reset.

[12258.747951] rtk_btusb: read_ver_rsp->lmp_subver = 0x6f71

[12258.754011] rtk_btusb: read_ver_rsp->hci_rev = 0x92b7

[12258.759741] rtk_btusb: patch_entry->lmp_sub = 0x8723

[12258.765333] rtk_btusb: Firmware already exists

[12258.770355] rtk_btusb: Rtk patch end 1

[12258.774559] rtk_btusb: chip type value: 0x71

[12258.779381] rtk_btusb: btusb_open set HCI UP RUNNING

[12258.785081] rtk_btcoex: Open BTCOEX

[12258.789042] rtk_btusb: btusb_open end

[12258.803978] rtk_btcoex: BTCOEX hci_rev 0x92b7

[12258.808971] rtk_btcoex: BTCOEX lmp_subver 0x6f71

[12258.814251] rtk_btcoex: rtk_vendor_cmd_to_fw: opcode 0xfc1b

[12258.870038] debugfs: File 'le_min_key_size' in directory 'hci0' already present!

[12258.878383] debugfs: File 'le_max_key_size' in directory 'hci0' already present!

[12258.886735] debugfs: File 'force_bredr_smp' in directory 'hci0' already present!

bt scan

scan 0 times

[12258.922073] rtk_btcoex: hci (periodic)inq start

[12275.580027] rtk_btcoex: inquiry complete

F4:4E:FD:3B:95:A6 EDIFIER M350

find EDIFIER

0 F4:4E:FD:3B:95:A6

1 EDIFIER

2 M350

BT_MAC: F4:4E:FD:3B:95:A6

scan on

bluetoothd[1817]: Bluetooth daemon 5.50

bluetoothd[1817]: Starting SDP server

bluetoothd[1817]: kernel lacks bnep-protocol support

bluetoothd[1817]: System does not support network plugin

bluetoothd[1817]: Bluetooth management interface 1.14 initialized

bluetoothd[1817]: Sap driver initialization failed.

bluetoothd[1817]: sap-server: Operation not permitted (1)

bluetoothd[1817]: Failed to set privacy: Rejected (0x0b)

[CHG] Controller 40:80:E1:F1:BE:0C Discoverable: no

bluetoothd[1817]: Endpoint registered: sender=:1.15 path=/A2DP/MPEG24/Source/1

[CHG] Controller 40:80:E1:F1:BE:0C Class: 0x00080000

bluetoothd[1817]: Endpoint registered: sender=:1.15 path=/A2DP/SBC/Source/1

[CHG] Controller 40:80:E1:F1:BE:0C UUIDs: 0000110a-0000-1000-8000-00805f9b34fb

[CHG] Controller 40:80:E1:F1:BE:0C UUIDs: 00001801-0000-1000-8000-00805f9b34fb

[CHG] Controller 40:80:E1:F1:BE:0C UUIDs: 0000110e-0000-1000-8000-00805f9b34fb

[CHG] Controller 40:80:E1:F1:BE:0C UUIDs: 00001200-0000-1000-8000-00805f9b34fb

[CHG] Controller 40:80:E1:F1:BE:0C UUIDs: 0000110c-0000-1000-8000-00805f9b34fb

[CHG] Controller 40:80:E1:F1:BE:0C UUIDs: 00001800-0000-1000-8000-00805f9b34fb

[12277.080992] rtk_btcoex: hci (periodic)inq start

Discovery started

[CHG] Controller 40:80:E1:F1:BE:0C Discovering: yes

[NEW] Device 34:29:EF:2C:E3:55 34-29-EF-2C-E3-55

[NEW] Device 34:29:EF:38:D9:1B 34-29-EF-38-D9-1B

[CHG] Device F4:4E:FD:3B:95:A6 RSSI: -36

[NEW] Device 4E:3C:D4:78:B4:2D K3_2db478

[NEW] Device 7D:3A:EA:81:4E:FC lck1_7D3AEA814EFC

[NEW] Device 20:23:06:4C:2B:9D UAF028

[NEW] Device 20:23:06:3C:9D:68 UAF028

[NEW] Device 2C:58:B9:7A:9A:41 2C-58-B9-7A-9A-41

[NEW] Device 02:68:EB:0E:98:4F 02-68-EB-0E-98-4F

[NEW] Device 86:2A:FD:9A:9C:9B 86-2A-FD-9A-9C-9B

[CHG] Device 20:23:06:4C:2B:9D UUIDs: 0000ffb0-0000-1000-8000-00805f9b34fb

[CHG] Device 20:23:06:4C:2B:9D ManufacturerData Key: 0x0aa5

[CHG] Device 20:23:06:4C:2B:9D ManufacturerData Value:

  c7 a5 d4 fa 20 23 06 4c 2b 9d 02 00              .... #.L+...

[NEW] Device B4:A8:28:37:51:6A B4-A8-28-37-51-6A

[NEW] Device 4A:9E:BD:60:98:E7 4A-9E-BD-60-98-E7

[NEW] Device 78:2B:46:43:EE:31 LAPTOP-A8M5JMVI

[NEW] Device 5E:FE:AA:31:7B:D2 5E-FE-AA-31-7B-D2

[CHG] Device 2C:58:B9:7A:9A:41 UUIDs: 0000fe78-0000-1000-8000-00805f9b34fb

[CHG] Device 2C:58:B9:7A:9A:41 ManufacturerData Key: 0x0065

[CHG] Device 2C:58:B9:7A:9A:41 ManufacturerData Value:

  01 c9 05                                         ...

[NEW] Device 75:A1:79:AF:E3:A2 75-A1-79-AF-E3-A2

[CHG] Device 20:23:06:3C:9D:68 RSSI: -66

Failed to stop discovery: org.bluez.Error.Failed

./bt_play_source.sh: line 99:  1819 Killed                  blue[12284.659328] rtk_btcoex: hci (periodic)inq cancel/exit

toothctl scan on

Changing F4:4E:FD:3B:95:A6 trust succeeded

Attempting to pair with F4:4E:FD:3B:95:A6

Failed to pair: org.bluez.Error.AlreadyExists

Attempting to connect to F4:4E:F[12288.864074] rtk_btusb: btusb_notify: hci0 evt 1

D:3B:95:A6

[12288.873009] rtk_btcoex: hci create connection, start paging

[12289.149014] rtk_btcoex: connected, handle 0003, status 0x00

[12289.155495] rtk_btcoex: Page success

[CHG] Device F4:4E:FD:3B:95:A6 Connected: yes

[12289.429127] rtk_btcoex: l2cap op 2, len 16, out 1

[12289.434453] rtk_btcoex: TX l2cap conn req, hndl 0x0003, PSM 0x0019, scid 0x0040

[12289.442703] rtk_btcoex: list_allocate_add: Add a2dp signal channel

[12289.481698] rtk_btcoex: l2cap op 3, len 20, out 0

[12289.487238] rtk_btcoex: RX l2cap conn rsp, hndl 0x0003, dcid 0x0043, scid 0x0040, result 0x0000

[12289.497064] rtk_btcoex: l2cap connection success, update connection

[12289.504106] rtk_btcoex: update_profile_connection: is_add 1, profile_index 2

[12289.512069] rtk_btcoex: update_profile_connection: phci_conn->profile_bitmap 0x04

[12289.520588] rtk_btcoex: rtk_notify_profileinfo_to_fw: BufferSize 5

[12289.527688] rtk_btcoex: rtk_notify_profileinfo_to_fw: NumberOfHandles 1

[12289.535192] rtk_btcoex: rtk_notify_profileinfo_to_fw: handle 0x0003

[12289.542269] rtk_btcoex: rtk_notify_profileinfo_to_fw: profile_bitmap 0x0004

[12289.550158] rtk_btcoex: rtk_vendor_cmd_to_fw: opcode 0xfc19

bluetoothd[1817]: Endpoint registered: sender=:1.15 path=/A2DP/SBC/Source/2

[12289.736933] rtk_btcoex: l2cap op 2, len 16, out 1

[12289.742278] rtk_btcoex: TX l2cap conn req, hndl 0x0003, PSM 0x0019, scid 0x0041

[12289.750539] rtk_btcoex: list_allocate_add: Add a2dp media channel

[12289.789200] rtk_btcoex: l2cap op 3, len 20, out 0

[12289.794732] rtk_btcoex: RX l2cap conn rsp, hndl 0x0003, dcid 0x0044, scid 0x0041, result 0x0000

[12289.804548] rtk_btcoex: l2cap connection success, update connection

[12289.811622] rtk_btcoex: update_profile_connection: is_add 1, profile_index 2

[12289.819566] rtk_btcoex: update_profile_connection: phci_conn->profile_bitmap 0x04

[12289.848242] rtk_btcoex: l2cap op 2, len 16, out 1

[12289.853576] rtk_btcoex: l2cap op 2, len 16, out 1

[12289.859020] rtk_btcoex: TX l2cap conn req, hndl 0x0003, PSM 0x0001, scid 0x0042

[12289.867302] rtk_btcoex: PSM(0x0001) do not need parse

Connection successful

[12289.873025] rtk_btcoex: TX l2cap conn req, hndl 0x0003, PSM 0x0017, scid 0x0043

[12289.883375] rtk_btcoex: l2cap op 2, len 16, out 0

[12289.889163] rtk_btcoex: l2cap op 3, len 20, out 1

bluetoothd[1817]: Control: Refus[12289.895167] rtk_btcoex: l2cap op 3, len 20, out 1

ing unexpected connect

[12289.903610] rtk_btcoex: PSM(0x0017) do not need parse

[12289.910998] rtk_btcoex: l2cap op 3, len 20, out 0

[12289.916390] rtk_btcoex: l2cap op 3, len 20, out 0

[12289.921835] rtk_btcoex: RX l2cap conn req, hndl 0x0003, PSM 0x0017, scid 0x0045

[12289.930131] rtk_btcoex: PSM(0x0017) do not need parse

[12289.935809] rtk_btcoex: TX l2cap conn rsp, hndl 0x0003, dcid 0x0044, scid 0x0045, result 0x0001

[12289.945697] rtk_btcoex: TX l2cap conn rsp, hndl 0x0003, dcid 0x0044, scid 0x0045, result 0x0003

[12289.955522] rtk_btcoex: RX l2cap conn rsp, hndl 0x0003, dcid 0x0046, scid 0x0042, result 0x0000

[12289.965325] rtk_btcoex: RX l2cap conn rsp, hndl 0x0003, dcid 0x0047, scid 0x0043, result 0x0004

[12291.078635] rtk_btcoex: l2cap op 2, len 16, out 1

[12291.083994] rtk_btcoex: TX l2cap conn req, hndl 0x0003, PSM 0x0017, scid 0x0043

[12291.092250] rtk_btcoex: PSM(0x0017) do not need parse

[12291.130453] rtk_btcoex: l2cap op 3, len 20, out 0

[12291.136012] rtk_btcoex: RX l2cap conn rsp, hndl 0x0003, dcid 0x0048, scid 0x0043, result 0x0000

bluetoothd[1817]: Can't open inp[12291.185041] rtk_btcoex: l2cap op 2, len 16, out 1

ut device: No such file or direc[12291.192907] rtk_btcoex: TX l2cap conn req, hndl 0x0003, PSM 0x001b, scid 0x0044

tory (2)

bluetoothd[1817]: AVRCP: failed to init uinput for F4:4E:FD:3B:95:A6

[12291.212948] rtk_btcoex: l2cap op 3, len 20, out 0

[12291.218445] rtk_btcoex: RX l2cap conn rsp, hndl 0x0003, dcid 0x0049, scid 0x0044, result 0x0000

[12291.228350] rtk_btcoex: l2cap connection success, update connection

[12291.235495] rtk_btcoex: update_profile_connection: is_add 1, profile_index 3

[12291.243542] rtk_btcoex: update_profile_connection: phci_conn->profile_bitmap 0x0c

[12291.252051] rtk_btcoex: rtk_notify_profileinfo_to_fw: BufferSize 5

[12291.259119] rtk_btcoex: rtk_notify_profileinfo_to_fw: NumberOfHandles 1

[12291.266665] rtk_btcoex: rtk_notify_profileinfo_to_fw: handle 0x0003

[12291.273713] rtk_btcoex: rtk_notify_profileinfo_to_fw: profile_bitmap 0x000c

[12291.281560] rtk_btcoex: rtk_vendor_cmd_to_fw: opcode 0xfc19

[12292.078397] rtk_btcoex: l2cap op 6, len 16, out 1

[12292.083736] rtk_btcoex: TX l2cap disconn req, hndl 0x0003, dcid 0x0046, scid 0x0042

[12292.092414] rtk_btcoex: handle_l2cap_discon_req: handle 0x0003, dcid 0x0046, scid 0x0042, dir 1

Playing WAVE '/embfly_test/wfxy.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo

bluetoothd[1817]: /org/bluez/hci0/dev_F4_4E_FD_3B_95_A6/fd0: fd(21) ready

[12295.004864] rtk_btcoex: update_profile_state: is_busy 1, profile_index 2

[12295.012583] rtk_btcoex: update_profile_state: phci_conn->profile_status 0x04

[12295.020539] rtk_btcoex: rtk_notify_profileinfo_to_fw: BufferSize 5

[12295.027562] rtk_btcoex: rtk_notify_profileinfo_to_fw: NumberOfHandles 1

[12295.034984] rtk_btcoex: rtk_notify_profileinfo_to_fw: handle 0x0003

[12295.042054] rtk_btcoex: rtk_notify_profileinfo_to_fw: profile_bitmap 0x000c

[12295.049942] rtk_btcoex: rtk_vendor_cmd_to_fw: opcode 0xfc19

[12295.056210] rtk_btcoex: rtl_process_media_data: Length 637

[12295.062408] rtk_btcoex: rtp: v 2, cc 0, pt 96

[12295.067327] rtk_btcoex: syncword: 9c

[12295.071335] rtk_btcoex: freq 48kHz

[12295.075183] rtk_btcoex: blocks 16

[12295.078928] rtk_btcoex: channel mode JOINT_STEREO

[12295.084206] rtk_btcoex: allocation method LOUDNESS

[12295.089600] rtk_btcoex: subbands 8

[12295.093417] rtk_btcoex: rtl_process_media_data: bitpool 32

[12295.099625] rtk_btcoex: rtk_vendor_cmd_to_fw: opcode 0xfc51

[12295.746707] rtk_btcoex: count_a2dp_packet_timeout: a2dp_packet_count 42

[12296.786712] rtk_btcoex: count_a2dp_packet_timeout: a2dp_packet_count 60

[12297.826743] rtk_btcoex: count_a2dp_packet_timeout: a2dp_packet_count 62

[12298.866741] rtk_btcoex: count_a2dp_packet_timeout: a2dp_packet_count 61

[12298.986698] rtk_btcoex: l2cap op 2, len 16, out 0

[12298.992133] rtk_btcoex: RX l2cap conn req, hndl 0x0003, PSM 0x0001, scid 0x004a

[12298.992138] rtk_btcoex: l2cap op 3, len 20, out 1

[12299.005810] rtk_btcoex: PSM(0x0001) do not need parse

[12299.011588] rtk_btcoex: TX l2cap conn rsp, hndl 0x0003, dcid 0x0042, scid 0x004a, result 0x0000

[12299.906751] rtk_btcoex: count_a2dp_packet_timeout: a2dp_packet_count 60

[12300.946768] rtk_btcoex: count_a2dp_packet_timeout: a2dp_packet_count 60

[12301.417951] rtk_btcoex: l2cap op 6, len 16, out 0

[12301.423487] rtk_btcoex: RX l2cap disconn req, hndl 0x0003, dcid 0x0042, scid 0x004a

[12301.432256] rtk_btcoex: handle_l2cap_discon_req: handle 0x0003, dcid 0x0042, scid 0x004a, dir 0

[12301.986775] rtk_btcoex: count_a2dp_packet_timeout: a2dp_packet_count 60

[12303.026785] rtk_btcoex: count_a2dp_packet_timeout: a2dp_packet_count 62

[12304.066798] rtk_btcoex: count_a2dp_packet_timeout: a2dp_packet_count 60

[12305.106802] rtk_btcoex: count_a2dp_packet_timeout: a2dp_packet_count 60

Aborted by signal Interrupt...

[12305.781101] rtk_btcoex: HCI OP Disconnect, handle 0003, reason 0x15

aplay: pcm_write:2053: write error: Interrupted system call

bluetoothd[1817]: Terminating

root@T113-Embfly:/embfly_test# [12305.871038] rtk_btcoex: disconn cmpl evt: status 00, handle 0003, reason 15

bluetoothd[1817]: No reply to Su[12305.878928] rtk_btcoex: process disconn complete event.

spend request

[12305.887616] rtk_btcoex: hci disconn, hndl 3, psm 19, dcid 43, scid 40, profile 2

[12305.897388] rtk_btcoex: disconn_profile: profile_ref[2] 2

bluetoothd[1817]: Endpoint unreg[12305.903492] rtk_btcoex: Delete profile: hndl 0x0003, psm 0x0019, dcid 0x0043, scid 0x0040

istered: sender=:1.15 path=/A2DP[12305.915503] rtk_btcoex: hci disconn, hndl 3, psm 19, dcid 44, scid 41, profile 2

/MPEG24/Source/1

bluetoothd[181[12305.926571] rtk_btcoex: disconn_profile: profile_ref[2] 1

7]: Endpoint unregistered: sende[12305.935424] rtk_btcoex: rtk_check_del_timer: handle 0x0003

r=:1.15 path=/A2DP/SBC/Source/1[12305.944381] rtk_btcoex: Delete profile: hndl 0x0003, psm 0x0019, dcid 0x0044, scid 0x0041

[12305.956260] rtk_btcoex: hci disconn, hndl 3, psm 1b, dcid 49, scid 44, profile 3

bluetoothd[1817]: Endpoint unreg[12305.964791] rtk_btcoex: disconn_profile: profile_ref[3] 1

istered: sender=:1.15 path=/A2DP[12305.973627] rtk_btcoex: rtk_check_del_timer: handle 0x0003

/SBC/Source/2

[12305.982567] rtk_btcoex: Delete profile: hndl 0x0003, psm 0x001b, dcid 0x0049, scid 0x0044

[12305.993063] rtk_btcoex: rtk_notify_profileinfo_to_fw: BufferSize 2

[12306.000011] rtk_btcoex: rtk_notify_profileinfo_to_fw: NumberOfHandles 0

[12306.007460] rtk_btcoex: rtk_vendor_cmd_to_fw: opcode 0xfc19

[12306.066821] rtk_btusb: btusb_notify: hci0 evt 2

[12306.081254] rtk_btusb: btusb_flush add delay

bluetoothd[1817]: Stopping SDP server

bluetoothd[1817]: Exit

[12306.096182] rtk_btusb: btusb_close

[12306.119973] rtk_btcoex: Close BTCOEX

[12306.123994] rtk_btcoex: -x

音乐响起，恭喜你！感谢您使用评估盈鹏飞嵌入式的SBC-T113S主板！