[IDEA] SPDIF out via GPIO (No Hat!)

[Nutul]

Ok so hear me out - I'm good enough with linux to follow instructions and do basic troubleshooting but definitely no expert.  I have been playing with digital output directly through the Pi's GPIO pins to my A/V receiver.  I'm hoping to find a way to get this working on a moOde installation and then having an entry in the drop-down menu as an Output Device in the Audio settings menu.

GitHub - mill1000/raspdif: S/PDIF digital audio output via Raspberry Pi GPIO.

I tried a couple things:

Note: All testing done on a PI4 with 4GB of RAM, but from what I can tell this works on any Pi.

Attempt #1

- Fresh install of moOde 8.3.0 - 64-bit
- install git and clang
- clone git and try to make - errors.
- manage to fix errors but doesn't seem to work

Attempt #2

- Fresh install of moOde 8.3.0 - 32-bit
- install git and clang
- clone git and try to make - no errors.
- install and test using ffmpeg - works!
- clearly 64-bit is a no-go

The rest of the steps don't yield results so I'm still poking around with moOde's configuration files to see if I can find a way to have it output to the FIFO, or maybe use the loopback option.  
I'll post an update when I get something working better, but thought I'd share my initial information in case someone else here has tried something similar or knows an easy way to make this work.

Hi,

reading your post I just noticed that git repo. Not read through it, but if it is about S/PDIF audio output without using a HAT looks interesting; I can have a look about making it compile for x64 arch.

Any pics/examples somewhere, just to see how it is used in real life?