AC1627 based bluetooth audio module config/serial interface

[komradebob]

So I had a need to move audio across the room and bought a bunch of little BT modules based on the JieLi AC1627 chip. Apparently quite a capable little device which also supports USB, FM radio and serial data. The module is designed for running a set of headphones or the like from your mobile phone, comes complete with V+/V-, Next, Previous, Reject Call, Answer Call, Call Last #, functional on 4 buttons, speaker output, mic input, headphone jack 3 pins marked TX/RX/Gnd and three marked G/M/C.

Only one problem. When you power it up, it tells you it is connected/not connected. In Chinese. I'd really like to either turn this off or change the language.

Of course there is no manual for the module. Even so, not a bad deal for $6US.


Sold here:
http://www.icstation.com/bluetooth-stereo-audio-receiver-module-earphone-loudspeaker-module-output-with-50hz-18khz-p-12053.html

Hooking up the serial port (115k baud) reveals debugging output, but no apparent input that has any effect. Output looks like:

task_list_cnt=0x0

4444

SYS_EVENT_DEL_TASK

del lmp ok

del stack ok

del_ket_masg*****Next_Task_Name2:BtStackTask

MSG_BT_STACK_STATUS_CHANGE

MSG_BT_STACK_STATUS_CHANGE

play_tone



 remote name : <redacted>del music dec phy succ

del_music_task: succ

--------tone_mutex_stop------------------

Pushing buttons results in:


MSG_BT_PREV_FILE

MSG_BT_NEXT_FILE

MSG_BT_PP

MSG_BT_ANSWER_CALL

MSG_BT_CALL_REJECT


Anyone seen this IC/module before? Got any clue as to what the other port is? Data sheet maybe?

Thanks!
Bob