Hello everyone,
I am trying to turn on I2S interface via Ubuntu Core config.txt file like these lines:
dtparam=i2s=on
dtoverlay=hifiberry-dac
dtoverlay=i2s-gpio28-31
And commented line dtparam=audio=on. All this changes inside run/mnt/ubuntu-seed/config.txt.
What exactly do I do wrong?
I want to see /dev/i2s file for processing it in my own snap app.
Thanks for any thoughts!
I have discovered that the best way - connect it to ALSA, but if hifiberry-dac works well - I see active sound card, at the same time adau1977-adc doesn’t work - no one active sound card. While I cannot undersdand this difference between ADC and DAC for rpi4 (maybe for DAC rpi4 is generator of clocks, but for ADC is not)
Now I found out that I cannot add my .dtbo file to config.txt. Who can tell me how can I load my own overlay dtbo file to ubuntu core?
