I'm using a raspberry pi zero and a Hifiberry DAC+ Zero for agricultural purpose as bird scarer to protect fruit harvest. I succeed to get sound but volume is very very low (although Master volume set to 100%). I have tried to access PCM volume but I haven't been able to access it yet.
The result of aplay -l command is:
**** List of PLAYBACK Hardware Devices ****
card 0: sndrpihifiberry [snd_rpi_hifiberry_dac], device 0: HifiBerry DAC HiFi pcm5102a-hifi-0 [HifiBerry DAC HiFi pcm5102a-hifi-0]
Subdevice #0: subdevice #0
The result of amixer command is :
Simple mixer control 'Master',0
Capabilities: pvolume pswitch pswitch-joined
Playback channels: Front Left - Front Right
Limits: Playback 0 - 65536
Front Left: Playback 65536 [100%] [on]
Front Right: Playback 65536 [100%] [on]
Simple mixer control 'Capture',0
Capabilities: cvolume cswitch cswitch-joined
Capture channels: Front Left - Front Right
Limits: Capture 0 - 65536
Front Left: Capture 65536 [100%] [on]
Front Right: Capture 65536 [100%] [on]
However I can't specify the use of card 0 in amixer with the command amixer -c 0. No returns appear. Is there a way to access to PCM controls and increase the volume of the output ?
Many thanks for your help.