The Aux in port of TSA8804 board signal pins was connected to the QCC3031 Bluetooth chip. If you want change the Aux in audio again. You can folliow this procedure.
QCC3031 support USB programming. No need extra programmer and the expensive programming cable. Just use a micro USB cable. User can change the Bluetooth settings easily. First, you need install the drivers correctly.
Hardware and Software required:
- Micro USB cable
- Download Bluesuite3.3 and install it
- Download SDB file
Step1: Install Qualcomm USB debug drivers
Please read this tutorial first and follow the procedure to install the USB drivers
Step2: Open the ADK configuration Tool software
Step3: Configuration set->Audio->Input->Analogue Line in. change the Analogue volume value.
Step4: Click the "Write device" Button which on the right top corner to save the settings to Bluetooth module.