Saturday, September 3, 2016

MTCB/MTCC Rom issues with ALPconnect app and Bluetooth

Hi Guys

Would really appreciate some help with this one, i am sure it been covered to some degree in other threads.
Since owning my unit I have wanted one application to run and I am not fussed about anything else, the app is ALPconnect.

ALPconnect is a application that connects to my radar detector via BT 4.0 only so it displays all the information on the dash for radar frequencies.
http://ift.tt/2cxubyB

Due to the limitations in the Bluetooth, no current rom has been able to allow the application to turn the BT on and search for the ALPconnnect Module
http://ift.tt/2cxu8md

Over on the other forum i am apart of http://ift.tt/2bXz9iW, one member has spent upwards of 2000$ buying android head-units to see if this app would run and connect on it.
our small thread is ongoing at @ http://ift.tt/2bXzhyZ about this issue.

I don't normally ask for help, but I could really use some help and I am sure others on the forum that purchased it for that reason would greatly appreciate it too.


This is the last information I received from agentdr8, thank you aswell
Quote:

Originally Posted by agentdr8 (Post 68479211)
It's severely limited, when compared to any other Android device with BT. This is due to the OEM's choice of the BC5/BC6 module, and their poor BT implementation. Instead of routing BT audio traffic through the Android system, like a normal device would, they route it through the MCU. That would be fine on its own, except they route pretty much all BT interactions through the MCU, via serial AT commands, which is very non-standard. Simple things like pairing, or using SPP profile just don't work, or require a bit of finagling.

On top of that, there's code (at least in MTCB; dunno about newer MTCD) in MTCManager that filters which devices can pair via BT for OBD use. It checks the device name and if it starts with OBD, it will allow it to pass to the next step during pairing. I can only imagine they chose to do that so they could sell their companion BT OBD adapters with the headunits?

My XMTC module had accounted for this limitation in name-based filtering (apparently not the only limitation though; if your adapter was at least v1.4 it should work), but it hasn't been updated to work on any 2016 roms. Since I no longer have time to maintain that project, it's been open sourced on my github. The BT pieces could be extracted into their own module, but I thought I had read someone else (maybe MVG70?) had made a BT xposed module for these devices to try and address compatibility issues.



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