Raspberry pi4 optical output + IR

Draculanium · March 25, 2021 at 8:24 AM

Hello!

I am a very beginner in linux.

I have one such expansion card:

Specific hifi digi+ digital sound card for raspberry pi a+/b+ Sale - Banggood.com

Can anyone help me with what code to make the optical output and IR work?

Thanks in advance!

DR

**lrusak** · March 25, 2021 at 3:52 PM Official Post

Looks like you need to use the following in config.txt (no idea if it's valid though)

Code

dtparam=i2c_arm=on
dtoverlay=hifiberry-digi

Draculanium · March 27, 2021 at 8:07 AM

Thanks

I can't change the config txt file. It says:

"Error writing config.txt: Read-only file system"

LibreElec

ghtester · March 27, 2021 at 8:20 AM

See here: Config.txt - LibreELEC.wiki

mrtrev · March 27, 2021 at 8:29 AM

Quote from Draculanium

"Error writing config.txt: Read-only file system"

This should help Config.txt - LibreELEC.wiki

**steveslim** · March 27, 2021 at 8:51 AM

Quote from Draculanium

Thanks
I can't change the config txt file. It says:
"Error writing config.txt: Read-only file system"
LibreElec

Hi Draculanium ,

For editing the config.txt, check out the LibreELEC Wiki here: Config.txt - LibreELEC.wiki. The first three headings on that page will help you with the necessary information to edit the config.txt on your RasPi device.

Good luck.