External attenution control extension for ROM USB audio

[Hannu]

Dear VS1010 users,

Here is usbvolda program. It is extension to ROM USB DAC code. With it is possible add external attenuation to DAC.

You can control the extra attenuation with + and -. ? prints the components of current volume and m is a grandmaster mute and u unmutes.

Have fun and as always, bug reports are welcome.

[Hannu]

The usbvolda has a feature which shouldn't be enabled. Power button reset.

The perfect place to disable this feature is to modify the FixAudioIoctlPatched() function in rom_fixes.c

Code: Select all

        } else {
                ret = AudioIoctl(self,request,arg);
        }
        PERIP(ANA_CF1) |= ANA_CF1_BTNDIS;
        return ret;
}

If your board resets in about 6 seconds you have powerbutton always on and you need this modification.