[arm-allstar] Raspi with Built in Sound Card

[Miles L]

Hello,
I have a raspberry pi 4 I am looking to use as a portable allstar node. I have a custom built hat on it that comprises of a sound card and ptt circuit that uses the GPIO pins of the pi. I’m having trouble finding documentation on how to configure hamvoip to use the sound card as the mic/audio out and the GPIO trigger. Is there a resource that covers that?

Thanks,
Miles Linscott