BT6038 questions

Gden

I recently purchased a module BT6038 and I have some questions, as there is absolutely no information on the website.

How can I obtain documentation on programming this module?
Can the microphone input be used as a line input? Do I need to change anything in the firmware for this?
Thank you.

FAE_Gavin

Gden Thank you for choosing the FSC-BT6038 module.

Complete technical documentation is available at:
- AT Command Set: FSC-BT6038A

The microphone input supports analog line-in functionality without firmware changes. For hardware implementation details, refer to the schematic diagram. Once connected, configure the audio input source using:

    AT+AUXCFG=1    // Set audio input mode to Analog Line In

Gden

Perfect! Thank you!!!

Gden

Could you clarify one more thing?
The documentation states that 'BT6038A only supports APTX, APTX-AD, APTX-HD'. But if I enter the command +A2DPENC, the response is 1:SBC.
Does this mean this codec is also supported?
How can I force the desired codec to be selected?
Thank you.

FAE_Gavin

Gden Here is the clarification regarding the audio codec of the FSC-BT6038A:

SBC Codec Support: The module forcibly and mandatorily supports the SBC codec by default. The response 1:SBC from the AT+A2DPENC command indicates that this codec is currently being used for the connection.
Codec Selection Priority: The codec is automatically negotiated between the devices. The fixed priority order on the module side (FSC-BT6038A) is: APTX-AD > APTX-HD > APTX > SBC.
Operational Recommendations: If you need to use an APTX codec, please follow these steps:
1. Use the AT+A2DPCFG command to confirm that the target APTX codec is enabled on the module (FSC-BT6038A)
2. Ensure the same APTX codec option is also enabled on your audio receiving device (e.g., headphones, speaker).
3. Restart the Bluetooth connection to trigger a codec re-negotiation.