IMPORTANT NOTE

take care what module you buy, where are version which did not have support for all features,read description of what you buy, for example here from aliexpress:

Library for BK3254 based bluetooth audio module (F-6888)

Supported commands based on this datasheet translate by www.onlinedoctranslator.com:

https://github.com/tomaskovacik/kicad-library/blob/master/library/datasheet/F-6888_bk3254/BK3254_V1.2_HYT.zh-CN.en.pdf

and this:

https://github.com/tomaskovacik/kicad-library/blob/master/library/datasheet/F-6888_bk3254/BK3254_V1.3_HYT.zh-CN.en.pdf

How to install

Follow this link to arduino.cc: https://www.arduino.cc/en/Guide/Libraries#toc5

how to connect BK3254

directly to computer

this is for testing if your module has serial interface enabled:

BK3254	computer(USB2serial for example)
RX	TX
TX	RX
GND	GND
VBAT	via diode to 5V

arduino using software serial (UNO, nano..)

BK3254	computer(USB2serial for example)
RX	7 (1st parameter of SoftwareSerial in example)
TX	6 (2nd parameter of SoftwareSerial in example)
RESET	5 (defined as resetBTpin in example)
GND	GND
VBAT	via diode to 5V

arduino using harware serial (mega ..)

BK3254	computer(USB2serial for example)
RX	TX1 (if using Serial1)
TX	RX1 (if using Serial1)
RESET	5 (defined as resetBTpin in example)
GND	GND
VBAT	via diode to 5V

Supported commands and event

For supported commands and events chek this wiki.

Supported functions

For supported functions chek this wiki or check example.

Library variables

On this this wiki page is list and variables which are set by librarie when event is received from module.