1) Modify the config.txt on termianl. Open the config.txt in system.
sudo nano /boot/config.txt
Append the following lines to the end of the file,enable the audio module.Draw attention to theformat , Otherwise it doesn't work. press "ctrl+o" and press "Enter" to save the file. Reboot thesystem.
dtoverlay=allo-boss-dac-pcm512x-audio
2)Check the DAC module
Type in the commands that are shown below. You can see the BossDAC, the 3 is the dac devicenumber.
aplay -l
cat /proc/asound/cards
