BC127 Melody 6.1.5 BT_VOL_CONFIG

Hi,

I have a question about BT_VOL_CONFIG parameters.
The Melody manual states;
BT_VOL_CONFIG = (def_hfp) (def_a2dp) (a2dp_steps) (volume_scaling_method)
where;
volume_scaling_method:

  1. Hardware: volume scaling is applied at the DAC in the case of analog output.
  2. DSP: volume scaling is applied in the digital domain by the DSP.

When I set <volume_scaling_method> to 2, it returns an error 0x13 meaning wrong parameter.
Could the manual be wrong?
What are the correct options:-
0. Hardware: volume scaling is applied at the DAC in the case of analog output.

  1. DSP: volume scaling is applied in the digital domain by the DSP.
    or
  2. Hardware: volume scaling is applied at the DAC in the case of analog output.
  3. DSP: volume scaling is applied in the digital domain by the DSP.
    ?

Thanks,
Keith

Any feedback?

For what it’s worth, the 6.1.5 manual was wrong. It’s 0 for “Hardware” and 1 for “DSP”.