BlueBus: A fully integrated A2DP Bluetooth solution

[t3ddftw]

Hey t3ddftw, any exclusive sneak peak m3forum progress updates on your carplay integration solution?

I haven't made much progress as of late. I am working on the full prototype and I ran into some snags, like a lack of MCLK from the Raspberry Pi.

We've (it's a joint venture with a fellow from outside the BMW community) also been reworking the software using a more robust and performant programming language called "Rust", and that has also been "fun".

-Ted

[repoman89]

Hey t3ddftw, any exclusive sneak peak m3forum progress updates on your carplay integration solution?

[t3ddftw]

Many thanks !
This is amazing how much difference there is with or without CVC from correspondant pov.

He can barely hear me without CVC, whereas with CVC it is loud and clear!

CVC does stand for "Clear Voice Capture"

[Orphee]

To close the loop here, I provided the correct license via email

Many thanks !
This is amazing how much difference there is with or without CVC from correspondant pov.

He can barely hear me or has a real loud echo without CVC, whereas with CVC it is loud and clear!

[t3ddftw]

This is a CVC license issue, I disabled CVC with "bt cvc off" and then I had sound, mic works (very bad but it works)

I tried all licences from github, none works.

To close the loop here, I provided the correct license via email

[Orphee]

This is a CVC license issue, I disabled CVC with "bt cvc off" and then I had sound, mic works (very bad but it works)

I tried all licences from github, none works.

[Orphee]

OK I may I found why CVC GUI tool does not work.

Looking at python code :

https://github.com/tedsalmon/BlueBus/blob/master/utility/gui_cvc_tool.py#L200

It search for 20FABB0

Whereas mine is actually 20FABB1

So I replaced the condition with my value...

Now I don't have error it terminal log anymore when I select serial port.
But my MAC ID is not valid for CVC :


The license you gave me was this one :

https://github.com/tedsalmon/BlueBus/blob/master/utility/gui_cvc_tool.py#L134

It may not be valid for my MAC ID actually ?
and while trying to manually set it from command line, I broke the genuine one there was in the bluebus...

[Orphee]

I just found this issue :

https://github.com/tedsalmon/BlueBus/issues/93

It seems I have the same kind of audio issue...
Maybe it happened when I tried to apply CVC licence manually from terminal command line and I actually broke cvc licence...

As the GUI tool does not work, how can I check cvc licence is applied and working ?

Edit : running "bt license cvc" from terminal gave the license you sent by mail, with the space like given

# [681948] DEBUG: BT: R: 'CVC=XXXX XXXX XXXX XXXX XXXX' (with real values from mail)

[Orphee]

From ISTA TIS :







Edit even on Windows I can't apply cvc :

# k =~=~=~=~=~=~=~=~=~=~=~= KiTTY log 2024.06.08 19:04:37 =~=~=~=~=~=~=~=~=~=~=~=
~~~~~~~~~~~~~~~~~~~~~~~~~
BlueBus Firmware: 1.3.4
Try HELP or ?
~~~~~~~~~~~~~~~~~~~~~~~~~
# VERSION
BlueBus Firmware: 1.3.4
Serial Number: 1149
Build Date: 45/20
Hardware Revision: 1
OK
# bt license cvc [obfuscated]
[360098] DEBUG: BT: W: 'LICENSE cvc=[obfuscated]'
OK
# [360126] DEBUG: BT: R: 'OK'

# ?
Available Commands:
BOOTLOADER - Reboot into the bootloader immediately
BT CONFIG - Get the BC127 Configuration
BT CVC ON/OFF - Enable or Disable Clear Voice Capture
BT HFP ON/OFF - Enable or Disable HFP. Get the HFP Status without a param.
BT MGAIN x - Set the Mic gain to x where x is octal C0-D6
BT MPREAMP ON/OFF - Enable the microphone pre-amp so non-OE microphones work well
BT PAIR - Enable pairing mode
BT NAME <name> - Set the module name, up to 32 chars
BT REBOOT - Reboot the BC127
BT UNPAIR - Unpair all devices from the BC127
BT VERSION - Get the BC127 Version Info
BT AT command> - Send raw AT command
BT DIAL <number> <name> - Dial a number and display name
BT REDIAL - Dial last number
GET DAC - Get info from the PCM5122 DAC
GET ERR - Get the Error counter
GET IBUS - Get debug info from the IBus
GET UI - Get the current UI Mode
GET I2S - Read the WM8804 INT/SPD Status registers
GET VIN - Read the stored vehicle VIN
REBOOT - Reboot the device
SET COMFORT BLINKERS x - Set the comfort blinkers between 1 and 8
SET COMFORT LOCK x - Lock the car at the given KM/h. 10, 20 or OFF
SET COMFORT UNLOCK x - Unlock the car at the given ignition position. POS0, POS1 or OFF
SET DAC GAIN xx - Set the PCM5122 gain from 0x00 - 0xCF (higher is lower)
SET DSP INPUT ANALOG/DIGITAL/DEFAULT - Set the CD Changer DSP input
SET IGN ON/OFF/ALWAYSON - Send the ignition status message or configure the BlueBus to assume the ignition is always on
SET LOG x ON/OFF - Change logging for x (BT, IBUS, SYS, UI)
SET PWROFF ON/OFF - Enable or disable auto power off
SET TEL ON/OFF - Enable/Disable output as the TCU
SET TIME HH MM - Set the IKE Time
SET UI x - Set the UI to x, where x:
x = 1. CD53 (Business Radio)
x = 2. BMBT (Navigation)
x = 3. MID (Multi-Info Display)
x = 4. BMBT / MID
x = 5. Business Navigation (MIR)
RESTORE - Fully Reset the BlueBus and BC127 to factory defaults
VERSION - Get the BlueBus Hardware/Software Versions
OK
# BT T HFP
HFP: On
OK
# BT CVC
Command not found. Try HELP or ?
# BT CVC
Command not found. Try HELP or ?
# GET DAC
PCM5122: I2SSTAT 2F (0x5E) [0]
PCM5122: PWRSTAT 81 (0x76) [0]
PCM5122: Volume configured to 44
OK
# GET ERR
Trap Counts:
Oscilator Failures: 0
Address Failures: 0
Stack Failures: 0
Math Failures: 0
NVM Failures: 0
General Failures: 0
Last Trap: 00
BC127 Boot Failures: 0
OK
# RESTORE
[543845] DEBUG: BT: W: 'UNPAIR'
[543855] DEBUG: BT: W: 'SET AUDIO=0 1'
[543865] DEBUG: BT: W: 'WRITE'
[543877] DEBUG: BT: W: 'SET AUDIO_ANALOG=1 15 1 OFF'
[543890] DEBUG: BT: W: 'WRITE'
[543899] DEBUG: BT: W: 'SET AUDIO_DIGITAL=2 44100 0 0 OFF'
[543913] DEBUG: BT: W: 'WRITE'
[543927] DEBUG: BT: W: 'SET BT_VOL_CONFIG=F 100 10 1'
[543940] DEBUG: BT: W: 'WRITE'
[543952] DEBUG: BT: W: 'SET PROFILES=1 0 1 0 1 1 1 1 0 0 1 0'
[543966] DEBUG: BT: W: 'WRITE'
[543977] DEBUG: BT: W: 'SET BT_STATE_CONFIG=2 2'
[543989] DEBUG: BT: W: 'WRITE'
[543998] DEBUG: BT: W: 'SET CODEC=1 OFF'
[544008] DEBUG: BT: W: 'WRITE'
[544017] DEBUG: BT: W: 'SET MUSIC_META_DATA=ON'
[544029] DEBUG: BT: W: 'WRITE'
[544037] DEBUG: BT: W: 'SET NAME=BlueBus'
[544048] DEBUG: BT: W: 'SET NAME_SHORT=BlueBus'
[544059] DEBUG: BT: W: 'WRITE'
[544068] DEBUG: BT: W: 'SET HFP_CONFIG=ON ON ON ON ON OFF'
[544087] DEBUG: BT: W: 'COD=300420'
[544097] DEBUG: BT: W: 'WRITE'
OK

I must have damaged something on the car...
I don't know why I don't have call input audio anymore with genuine SES plugin as it used to work in my first tests before playing with wires...

Edit : It is not car but the bluebus...

I replugged genuine ULF bluetooth module with its SES jumper.
Call BT Audio and mic works with BMW ULF module.

So I probably damaged the bluebus with inverted pins on my first SES adapter build try...



Edit 2 : Neither my Windows laptop or my Ubuntu desktop are able to apply cvc with GUI tool, and neither of them can connect to flash firmware, it seems to reboot to bootloader and green led blinks... but not responding then...

Only screen / putty works for terminal log access.

[Orphee]

I have bt audio streaming working fine, I have music.

Issue only occurs in call.

Mic set to -23 yes.


Yesterday, before I played with rewiring, with SES jumper connected to SES connector (without any depin mod) , I had call audio working but no mic...
So like genuine, only 6 pin audio and 3 pin power connected to bluebus.

I don't know what I did...
Maybe a wrong terminal command while playing with terminal... ?


Today even if I plug everything like yesterday (genuine, no depin mod), no more call audio at all...

And when I plug the SES adapter I built to 6 pin bluebus, it does not work either ...

It used to work month ago before I sent back bluebus for repair with de-pin from SES connector to 6 depin connector...

I know I did a wrong wiring yesterday when I built my SES adapter...

I built it with pin 1 to 3 up, and 4 to 6 down, reversed form left to right...
Pin 1 and 3 was outside 6pins audio instead of near...

Did it damage something... Or is it only some miss programmation with terminal...
I only recall I sent cvc terminal command you gave me by mail...

I of course fixed my wirings and plugged back 1 and 3 to near 6-audio pin.

I also remind I had pin 19 from SES to 4 soldered instead of 18 at first...

Edit : when I make a call, the screen show "call" or sometime "voice assistant"

So it seems it detect the call...

When I hang up, the music starts again

[t3ddftw]

Thanks ! So in any case you have to depin or use an adapter linked to bluebus.

I probably damaged something on the car, I inverted some wires on the 6 depin...

I reppluged it all correctly but I don't have any call sound anymore...
No matter what...

I still have music, but even with ses jumper and nothing connected to the 6 depij bluebus, I don't have sound anymore...

I used to have at least remote correspondent voice working... But now nothing...
With it without the SES jumper and with our without home made SES to 6-depin connector...

So, to be clear, you have no inbound or outbound audio? This sounds more like a misconfiguration or license issue than anything…

Can you make sure the mic gain is set to -23dB?

Thanks!
-Ted

[Orphee]

Thanks ! So in any case you have to depin or use an adapter linked to bluebus.

I probably damaged something on the car, I inverted some wires on the 6 depin...

I reppluged it all correctly but I don't have any call sound anymore...
No matter what...

I still have music, but even with ses jumper and nothing connected to the 6 depij bluebus, I don't have sound anymore...

I used to have at least remote correspondent voice working... But now nothing...
With it without the SES jumper and with our without home made SES to 6-depin connector...

[t3ddftw]

Hi !

@t3ddftw I have a question regarding phone adapter.

Having the genuine SES jumper connected on SES connector does not make microphone works, does it ?

Does the 6 depin connector must be plugged to the bluebus ?

I have a SES jumper connected on SES blue 26 connector, but if I don't rewire the pins from it to the 6 depin plugged to bluebus, I can hear my friend (DSP with digital audio cable/mode enabled), but it seems mic is not working, he can't here me...

Do I miss something ?





Edit : I found https://www.bimmerfest.com/threads/s...stall.1307993/

And my SES jumper is correctly wired...

I will look at SES connector

Edit 2 : I double check my pins and all match. my SES jumper should be OK.

I suppose I must have an adapter cable from SES connector to 6 pin bluebus if I don't wan't to rewire manually, it is not just a matter of SES jumper... right ?

Thanks for the tip on pin 19!

Having the SES jumper should allow the microphone to work. Are you sure you've correctly de-pinned the 54-pin connector?

Do you own a multimeter to check for DC voltage at the mic connector?

Thanks!
-Ted

[Orphee]

t3ddftw A friend of mine would like to buy a bluebus soon.

He (almost) have an M5 E39 from 09/1999 with DSP.

Is DSP coaxial cable sold with bluebus does he have to request / add it in the shopping cart ? is the 6 pin connector for TCU phone included ?

Thank you

Edit :
May I also suggest to add SES pin connectors option in TCU de-pinning guide ?

Hi again !

It seems there is a mistake on the wiki, the TEL ON PIN is written as 19 on wiki for SES connector, shouldn't it be 18 ?

[Orphee]

Hi !

@t3ddftw I have a question regarding phone adapter.

Having the genuine SES jumper connected on SES connector does not make microphone works, does it ?

Does the 6 depin connector must be plugged to the bluebus ?

I have a SES jumper connected on SES blue 26 connector, but if I don't rewire the pins from it to the 6 depin plugged to bluebus, I can hear my friend (DSP with digital audio cable/mode enabled), but it seems mic is not working, he can't here me...

Do I miss something ?





Edit : I found https://www.bimmerfest.com/threads/s...stall.1307993/

And my SES jumper is correctly wired...

I will look at SES connector

Edit 2 : I double check my pins and all match. my SES jumper should be OK.

I suppose I must have an adapter cable from SES connector to 6 pin bluebus if I don't wan't to rewire manually, it is not just a matter of SES jumper... right ?