Raspberrypi 4b, Installed card success.
aplay -l
2: seeed2micvoicec [seeed-2mic-voicecard], device 0: bcm2835-i2s-wm8960-hifi wm8960-hifi-0 [bcm2835-i2s-wm8960-hifi wm8960-hifi-0]
Subdevices: 1/1
Subdevice #0: subdevice #0
use mplay can play wav file normally, like this
mplayer -ao alsa:noblock:device=plughw=2,0 /home/ianglei/music/test.wav
MPlayer 1.4 (Debian), built with gcc-10 (C) 2000-2019 MPlayer Team
do_connect: could not connect to socket
connect: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
Playing /home/ianglei/music/test.wav.
libavformat version 58.45.100 (external)
Audio only file format detected.
Load subtitles in /home/ianglei/music/
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 16000 Hz, 1 ch, s16le, 256.0 kbit/100.00% (ratio: 32000->32000)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
AO: [alsa] 16000Hz 1ch s16le (2 bytes per sample)
Video: no video
Starting playback…
*A: 4.5 (04.5) of 5.0 (05.0) 0.1% *
Exiting… (End of file)
but play m4a or mp3 failed, I want to know why?
mplayer -ao alsa:noblock:device=plughw=2,0 /home/ianglei/music/horse.mp3
MPlayer 1.4 (Debian), built with gcc-10 (C) 2000-2019 MPlayer Team
do_connect: could not connect to socket
connect: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
Playing /home/ianglei/music/horse.mp3.
libavformat version 58.45.100 (external)
Audio only file format detected.
Load subtitles in /home/ianglei/music/
==========================================================================
Opening audio decoder: [mpg123] MPEG 1.0/2.0/2.5 layers I, II, III
AUDIO: 44100 Hz, 2 ch, s16le, 32.0 kbit/2.27% (ratio: 4000->176400)
Selected audio codec: [mpg123] afm: mpg123 (MPEG 1.0/2.0/2.5 layers I, II, III)
==========================================================================
[AO_ALSA] alsa-lib: pcm_hw.c:386:(snd_pcm_hw_hw_params) SNDRV_PCM_IOCTL_HW_PARAMS failed (-22): Invalid argument
[AO_ALSA] Unable to set hw-parameters: Invalid argument
Failed to initialize audio driver ‘alsa:noblock:device=plughw=2’
No such audio driver ‘0’
Could not open/initialize audio device → no sound.
Audio: no sound
Video: no video