[Q] Force Audio out via USB
I'm part way through completing an Audio/Charging cable for my car and was wondering if there was a way to force audio out via the USB instead of relying on the phone checking for the required voltage to put it into dock mode.
Reason being I want to troubleshoot my setup and be sure that the phone is trying to output audio via the USB port, my USB flex is faulty (I think) so I'm not sure if the sound isn't working because the ROM doesn't support audio out, if the cable I made doesn't work, the phone es faulty etc, if I can force audio over the dock then I know the problem is with the phone.
I've tried a few car mode apps but I don't know if they activate the audio out via USB mode or not.
I'm running Supernexus M1 (4.2) as my ROM if that matters.