BlueBus: A fully integrated A2DP Bluetooth solution

[l4ma]

I received my BlueBus back at the end of August and I still haven't installed it 🤦♂️

Today I finally got everything ordered to retrofit my E46 320d Touring with the CD-changer pre-wiring and the OEM microphone. Once it's in the car, I'll try to post a summary of what I did in order to get it all installed OEM-style. I was going to place the BlueBus in the space behind the glovebox used to mount extra modules but I finally decided to challenge myself and wire everything to the boot. It will be easier to update the BlueBus from there and things are tight enough under the dashboard as it is, no need to add yet another item.

Here's a list of the parts I ordered:

- OEM steering column-mounted mic for E46 convertible and Z4 (improved reception and easier to mount since I haven't got any holes in my headliner): 84 31 6 937 391
- Steering column upper trim piece with hole for mic: 32 31 6 765 803
- CD changer connection cable: 61 12 8 374 683
- CD changer power and I-BUS cable: 61 12 9 410 959
- 2x round pins for Telephone ON and Telephone -> Radio MUTE signals at X18126: 61 13 5 A07 B73
- Pins for the Mic +ve/-ve, Tel. audio +ve/-ve: 61 13 0 005 197
- 0,35 mm² wires to build up the telephone function cable

I'll keep you posted with my progress, I cannot wait to have all this new functionality in the Touring!

Hello der_spanier and Ted!
Im going through "connecting Bluebus to EU E46 without CD changer prewiring" pain, and id like to ask you for help and advice.
Im not sure from your posts, if you have 16:9 sat nav. I do, so my radio module is in the trunk. I also have factory phone module wired and installed, but i dont care about phone function for now.
My question is, if i have radio in the trunk is it really necessary to connect the CD changer wire from boot to my MKIV sat nav with cable 1, or is it enough to connect cable nr. 2 to the radio unit, get power cable splitter and all signals will be transfered to sat nav head unit by the already connect cable from radio? Thanks a lot in advance!

http://bmwfans.info/parts-catalog/E46-Coupe/Europe/325Ci-M54/L-N/nov2001/browse/audio_navigation_electronic_systems/connection_cable_cd_changer#6904074_2

nr. 2 https://www.ecstuning.com/b-genuine-...1126904074/

[t3ddftw]

Yes that's all Android Auto and Carplay are. Essentially a dumb screen mirror - all the heavy lifting is done on the phone. Presumably you're using a Carlinkit dongle for Carplay but what about Android Auto to emulate the Android Auto "interface" to the phone?

I am using a CarlinKit, but the device also does Android Auto out of the box, so I don't need to implement anything extra

-Ted

[Shonky]

No, the goal for now is to only use the Raspberry Pi video stream to display the CarPlay / AA UI. The UI will by and large still be run by the factory Navi / Video Module.

Overtime, it'll make sense to replace the GT UI with a more advanced replica, but it'll be fully custom.

Thanks!
-Ted

Yes that's all Android Auto and Carplay are. Essentially a dumb screen mirror - all the heavy lifting is done on the phone. Presumably you're using a Carlinkit dongle for Carplay but what about Android Auto to emulate the Android Auto "interface" to the phone?

[t3ddftw]

Is it based around OpenAuto Pro or are you developing the Android Auto yourself? Because that would be a pretty big job still. I'm looking to DIY something like this

No, the goal for now is to only use the Raspberry Pi video stream to display the CarPlay / AA UI. The UI will by and large still be run by the factory Navi / Video Module.

Overtime, it'll make sense to replace the GT UI with a more advanced replica, but it'll be fully custom.

Thanks!
-Ted

[Shonky]

Is it based around OpenAuto Pro or are you developing the Android Auto yourself? Because that would be a pretty big job still. I'm looking to DIY something like this

[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