Turning an external amplifier on or off when audio is played
28 Feb
2021
28 Feb
'21
8:22 p.m.
Hello,
I'm working with an embedded system that uses the SGTL5000 to play audio. We have an amplifier connected to the DAC output, which we can turn off using a GPIO pin. I'd like to automatically enable the amplifier before playing a sound and disable it after playback has completed. Are there any hooks that would allow me to do that in userspace? If not, is there something in kernel-space that would allow me to accomplish this?
Thanks,
Amr
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Amr Bekhit