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I am building an OS for my STM32MP175F dk2 board using Buildroot. The audio sound card is recognized in U-Boot boot messages and alsamixer, but /proc/asound/cards does not list the sound card, and I cannot play or record audio. I intend to use headphones as both input (microphone) and output (speaker) for voice calls between boards.
What configurations and packages should I enable in Buildroot to ensure audio functionality? How can I verify and troubleshoot the audio setup to ensure proper operation during voice calls?
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havnt played with alsa directly much, mostly worked with on top of pulseaudio
The issue is with dts file system, i need to update dts file system.
I have all the drivers and also the correct audiocodec driver
i got pulseaudio
i suppose you have fixed it?
It says I don’t have soundcard also when I proc/snd
Also alsamixer will show the sound card
And even the uboot boot messages will show the sound card
And I can’t see it anywhere
if also is showing, i dont see a problem,
what are you trying to acheive?
It says no sound card everywhere
i want headphone access with the board
my project is to make a call between two boards
how about using USB for audio?
ik it’s not the way you want, just asking in case
I dont have headphones with USB connector
if its there a way then it should work with aux cable also
the methods are different,
USB has a class UAC2 which helps in decoding/xfer of audio to/from USB host
but AUX comes from snd part-> cant say much as i havnt work on aux and embedded linux
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