RCEU-KiCAD_Libraries/KiCAD-Libraries/library/datasheet/F-6188_BK8000L

Highlights of BK8000L from datasheet

arduino library:

Library for this module

specs:

1. Bluetooth v2.1 + EDR ;
2. A2DP v1.2 ;
3. AVRCP v1.0 ;
4. HFP v1.5 ;
5. GAVDP1.2 ;
6. HSP1.2 ;
7. IOP

Parameters:

Bluetooth Specification	Bluetooth V2.1
Supply voltage	DC3.3-4.2V , ≤ 2.9V Automatic shutdown, ≤ 3.1V Call the police
Bluetooth protocol support	HFPV1.5 , A2DPV1.2 , AVRCPV1.4 , HSP1.2 , GAVDP1.2 , IOP
Working current	≤ 60mA
Standby Current	<500uA
temperature range	- 40oC ~ + 85oC
Wireless transmission range	≤ 10 Meters
transmit power	Class2 4dbm
Sensitivity	- 80dBm <0.1% BER
Frequency Range	2.4GHz ~ 2.480GHz
External Interface	Serial ( TTL Level, 3.3V )
Audio Performance	SBC decoding
Module size	25x13.5x1.8mm
Size adapter plate	21x29mm

PINOUT

PIN	NAME	decription	NOTES
1	GND	ground for antena
2	ANT	antena, default off, internal is used
3	GND	ground for antena
4	VOL + (TMS)	volume up, JTAG
5	VOL - (TCK)	volume down, JTAG
6	NEXT (TDO)	next track, JTAG
7	PREV (TDI)	previous track, JTAG
8	#RST	reset, active LOW
9	MBISTEN	unused
10	TX(GPIO0)	3.3V UART TX
11	RX(GPIO1)	3.3V UART RX
12	PP/CALL (GPIO2)	Play / Pause / phone / releases / re-pair
13	LED0 (GPIO3)	Status Indicator
14	LED1 (GPIO4)	Status Indicator
15	MUTE (GPIO5)	Mute Control (mute output low), the control terminal of the power amplifier
16	GND	power ground
17	AGND	AUX ground
18	#AUX_DET (GPIO11)	AUX Insertion detection (active low)
19	AUX_R	AUX Right channel input
20	AUX_L	AUX Left channel input
21	MIC_N	Microphone negative terminal
22	MIC_P	Microphone positive terminal
23	VMIC	Microphone bias voltage
24	LN	Audio left differential output negative end
25	LP	Audio left positive differential output terminal
26	RP	Audio right differential output positive terminal
27	RN	Audio right differential output negative end
28	VBUS	Unused
29	VBAT	power input( 3.3 ~ 4.2V )
30	3V0	Unused
31	ADC	Unused
32	GND	power ground

AT instruction

Serial Configuration

1. Baud Rate 9600 ;
2. 8 Data bits;
3. No parity bit;
4. One stop bit;
5. 9600 , N , 8 , 1 .

Format

Control Instruction format: AT + <CMD> [<param>]\r\n

Feedback data format: <IND> [<param>]\r\n

Control instructions

---

Serial command	parameter	description	example	return	note
CA		pairing	AT+CA\r\n
CB		Exit pairing	AT+CB\r\n
CC		The last paired device connected	AT+CC\r\n		what this should do? connect to last connected device?
CD		disconnect	AT+CD\r\n
CE		Answer the call	AT+CD\r\n
CF		reject a call	AT+CF\r\n
CG		Hang up	AT+CG\r\n
CH		redial	AT+CH\r\n		last called number?
CK		volume up	AT+CK\r\n
CL		volume down	AT+CL\r\n
CM		Multi-language switch	AT+CM\r\n
CO		Channel switching (invalid)	AT+CO\r\n		to be tested
CP		Shutdown	AT+CP\r\n
CT		Enter the test mode	AT+CT\r\n
CW		Retention			test this
CV		Open phone VOICE	AT+CV\r\n
CY		Retention			test this
CZ		Memory clear	AT+CZ\r\n
CMM	Number:( 0-4 )	Set the number of multi-lingual	AT+CMM4\r\n
MA		Music Play / Pause	AT+MA\r\n
MC		The music stops	AT+MC\r\n
MD		next track	AT+MD\r\n
ME		previous track	AT+ME\r\n
MF		fast forward	AT+MF\r\n		test how does this exacly works?
MH		rewind	AT+MH\r\n		test how does this exacly works?
MN		Query bluetooth name	AT+MN\r\n	NA:BK8000L\r\n	test this
MO		Bluetooth connection status inquiry	AT+MO\rn	connection succeeded:" C1\r\n"no connection:"C0\r\n"
MP		PIN Code query	AT+MP\r\n	PN:0000\r\n
MR		Query bluetooth address	AT+MR\r\n	AD:111111111111\r\n
MQ		Query software version	AT+MQ\r\n	XZX-V1.2\r\n
MV		Bluetooth playback status inquiry	AT+MV\r\n	Play: "MB\r\n", time out:"MA\r\n", disconnect:" M0\r\n"
MY		Bluetooth inquiry HFP status	AT+MY\r\n	disconnect:"M0\r\n", connection:"M1\r\n", Caller: "M2\r\n", Outgoing: "M3\r\n", calling:"M4\r\n"

from dump of lash:

---

command	what google tell us about it	module response
AT+CKPD=200	Notifies the AG service when a button on the headset is pressed. [1]	OK
AT+VGM=	AT+VGM=%gain% Notifies the audio gateway service when the microphone volume on the headset is changed to the specified gain value. [1]
AT+VGS=	AT+VGS=%gain% Notifies the audio gateway service when the speaker volume on the headset is changed to the specified gain value. [1]
AT+CHUP	Rejects an incoming call. [2]	OK
AT+CCWA=	Enables call waiting notification in the audio gateway [2]2	OK
AT+BLDN	Bluetooth last dialled number [2]
AT+BRSF=	Retrieves the supported features [2]
AT+BTRH=
AT+BTRH?
AT+BVRA=	Enables or disables voice recognition in the audio gateway. [2]
AT+CIND=?	Retrieves the indicator mappings for the audio gateway. [2]
AT+CIND?	Reads the current status of the audio gateway indicators. [2]
AT+CMER=3,0,0,	Registers or unregisters status updates. [2]	OK
AT+CHLD=		OK
AT+CHLD=?		OK
AT+CLCC		OK
AT+CLIP=	Enables the call line identification.	OK
AT+COPS=3,0		OK
AT+COPS?		OK
AT+CNUM
AT+VTS=
AT+XAPL=0000-0000-0100,7
AT+IPHONEACCEV=

[1] https://docs.microsoft.com/en-us/previous-versions/windows/embedded/ms881905(v=msdn.10)

[2] https://docs.microsoft.com/en-us/previous-versions/windows/embedded/ms881893(v=msdn.10)

bluetooth status information send without request

---

static part of data	variable part of sent data	description	real data
II		connection succeeded	II\r\n
IA		disconnect	IA\r\n
MA			timeout: MA\r\n(isn't this paused music?)
MB			Play: MB\r\n
IR	number	Caller ID	IR-136XXXXXX
PR	number	Outdoing number	PR-136XXXXX
ON		Bluetooth is thurned on	ON\r\n

SPP Introduction

---

SPP Data Format	parameter	description	example	info returnd by module
APT+SPP8888	Four-digit password ( 8888 )	Through a password to open SPP	APT+SPP8888\r\n	pass OK: OK\r\n, wrong pass: ERR \r\n
APT+XXXXXXX	data 64byte	transfer data, do not exceed recommended 64byte	APT+XXXXXX\r\n	success: OK\r\n, error: ERR\r\n
APR+XXXXXXX	data 64byte	receive data, do not exceed recommended 64byte	APR+XXXXXX\r\n	Data sent from phone

NOTES:

based on datasheet (BK8000L_datasheet.pdf) BK8000L has support for SDcard:

PIN	function
GPIO12	sd_clk/clk13m
GPIO13	sd_cmd/SCL
GPIO14	sd_data[0]/SDA
GPIO15	sd_data[1]
GPIO16	sd_data[2]
GPIO17	sd_data[3]

wakeup:

The BK8000L can enter into shut down mode when there is no active connection. The shut mode can be waked up by GPIO and USB charge. All GPIO can be source to wake up MCU from shut down state. In shut down state, any level change on the set GPIO will trigger the wake up procedure.

KICAD supporting files:

schematics symbol:

PCB module:

RE-draw of basic supporting circutes (mic, output etc...) is in breakout board adapter project: here

strings from flash dump:

/AT+

...skipping

AT+CKPD=200

AT+VGM=

AT+VGS=

sec_ssp_keypress_notify %02x:%02x:%02x:%02x:%02x:%02x %02x

sec_ssp_passkey_notify %02x:%02x:%02x:%02x:%02x:%02x %06lu

sec_ssp_passkey_req %02x:%02x:%02x:%02x:%02x:%02x

remote_name_complete %02x:%02x:%02x:%02x:%02x:%02x %02x %s

Command in progress was aborted by the target device

sec_ssp_conf_req %02x:%02x:%02x:%02x:%02x:%02x %06lu

EVENT_PLAYBACK_STATUS_CHANGED

UNKNOWN EVENT

EVENT_TRACK_CHANGED

EVENT_TRACK_REACHED_END

EVENT_TRACK_REACHED_START

EVENT_PLAYBACK_POS_CHANGED

EVENT_BATT_STATUS_CHANGED

EVENT_SYSTEM_STATUS_CHANGED

EVENT_PLAYER_APPLICATION_SETTING_CHANGED

EVENT_NOW_PLAYING_CONTENT_CHANGED

EVENT_AVAILABLE_PLAYERS_CHANGED

EVENT_ADDRESSED_PLAYER_CHANGED

EVENT_UIDS_CHANGED

EVENT_VOLUME_CHANGED

avrcp getcaps eventids: count %d

id=%d (%s)

STOPPED

UNKNOWN

PLAYING

PAUSED

FWD_SEEK

REV_SEEK

id=%d (%s)

, playback status=%s

, current track index=0x%08lx:%08lx

avrcp play status:

song length %ld sec

song position %ld sec

play status %s

avrcp %s: %lu

Beken

FFTTEST

AECTEST

AECIOCTL

acl_req %02x:%02x:%02x:%02x:%02x:%02x %02x%02x%02x

hs disconnected %lu

INVALID RESULT_T VALUE

sco failed to open %s

hs connected %lu

release failed

press failed

TITLE

ARTIST

ALBUM

TOTAL_TRACK_NUMBER

GENRE

PLAYING_TIME

[cont']

attr_id %s, char_set_id %d, attr_len 0x%x attr_val%s: %.*s

%u %02x:%02x:%02x:%02x:%02x:%02x %u

...skipping

AT+CHUP

AT+CCWA=

AT+BLDN

AT+BRSF=

AT+BTRH=

AT+BTRH?

AT+BVRA=

AT+CIND=?

AT+CIND?

AT+CMER=3,0,0,

AT+CHLD=

AT+CHLD=?

AT+CLCC

AT+CLIP=

AT+COPS=3,0

AT+COPS?

AT+CNUM

AT+VTS=

AT+XAPL=0000-0000-0100,7

AT+IPHONEACCEV=

call on hold

held call rejected

held call accepted

AG Response and Hold status - %s

AG indicator %s=%d

AG current calls %d, %d, %d, %d, %d, %s, %d, %s, %d

PR-%s

IR-%s

AG calling line identification %s, %d, %s, %d, %s, %d

AG operator %s

AG state {service %d, call %d, callsetup %d, callheld %d, signal %d, roam %d}

AG subscriber %s, type %d

AG waiting call notification %s, %d, %d, %s, %d, %s, %d, %d

disable_complete %lu %02x

a2dp connected %lu

hf connected %lu

stream suspended %lu

stream started %lu

enable_complete %lu %02x

OPERATION NOT STARTED

OPERATION IN PROGRESS

OPERATION NOT PERMITTED

NO SUCH ENTRY

INPUT/OUTPUT ERROR

DEVICE NOT CONFIGURED

FAILED ALLOCATING MEMORY

RESOURCE IS BUSY

NO SUCH DEVICE

INVALID ARGUMENT

OPERATION NOT SUPPORTED

OPERATION TIMED OUT

DEVICE IS SUSPENDED

GENERAL-PURPOSE ERROR

LOGICAL TEST FAILURE

INCORRECT STATE

PIPE IS STALLED

INVALID PARAMETER

OPERATION ABORTED

SHORT TRANSFER

WOULD BLOCK

ALREADY

EVALUATION TIME EXPIRED

RESOURCE IS FULL

DEST ADDR REQUIRED

CAN'T ASSIGN REQUESTED ADDRESS

MESSAGE TOO LONG

NET DOWN

NET UNREACHABLE

NET RESET

CONNECTION ABORTED

CONNECTION RESET

ALREADY CONNECTED

NOT CONNECTED

CONNECTION REFUSED

HOST DOWN

HOST UNREACHABLE

NO LINK

PROTOCOL

NO PROTOCOL OPTION

OPERATION INTERRUPTED

PROTOCOL TYPE MISMATCH

newconn, svc id

connecting, svc id

%u %02x:%02x:%02x:%02x:%02x:%02x

a2dp connecting %lu

hs connecting %lu

SBC [%02x %02x]

bitpool %d/%d

16KHz %s, 32KHz %s, 44KHz %s, 48KHz %s

MONO %s, DUAL %s, STEREO %s, JOINT STEREO %s

block 4 %s, 8 %s, 12 %s, 16 %s

subbands 4 %s, 8 %s

SNR %s, Loudness %s

MPEG-1,2 AUDIO [%02x %02x %02x %02x]

I %s, II %s, III %s, CRC %s

16K %s, 22K %s, 24K %s, 32K %s, 44K %s, 48K %s

MPF %s, VBR %s

bit rate 0x%x, 0x%x

MPEG-2,4 AAC [%02x %02x %02x %02x %02x %02x]

MPEG2 LC %s, MPEG4 LC %s, LTP %s, SCALABLE %s

8K %s, 11K %s, 12K %s, 16K %s, 22K %s, 24K %s, 32K %s, 44K %s

48K %s, 64K %s, 88K %s, 96K %s

MONO %s, STEREO %s, VBR %s, bit rate %ld

ATRAC [%02x %02x %02x %02x %02x %02x %02x]

0123456789ABCDEF

0123456789abcdef

Infinity

POSIX

powf

sqrtf

ASCII

ASCII

Public Browse Group Root

Bluetooth service discovery

0000

Audio Sink

Audio/Video remote Control

BK8000L

0000