VAR-SOM-MX6 Audio record play

VAR-SOM-MX6 - Audio Record/Play

Get information on the Sound Cards

root@var-som-mx6:~# cat /proc/asound/cards
 0 [tlv320aic3xaudi]: tlv320aic3x-aud - tlv320aic3x-audio
                      tlv320aic3x-audio
 1 [imxhdmisoc     ]: imx-hdmi-soc - imx-hdmi-soc
                      imx-hdmi-soc

root@var-som-mx6:~# aplay -L

null
    Discard all samples (playback) or generate zero samples (capture)
sysdefault:CARD=tlv320aic3xaudi
    tlv320aic3x-audio, 
    Default Audio Device
sysdefault:CARD=imxhdmisoc
    imx-hdmi-soc, 
    Default Audio Device
surround40:CARD=imxhdmisoc,DEV=0
    imx-hdmi-soc, 
    4.0 Surround output to Front and Rear speakers
surround41:CARD=imxhdmisoc,DEV=0
    imx-hdmi-soc, 
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=imxhdmisoc,DEV=0
    imx-hdmi-soc, 
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=imxhdmisoc,DEV=0
    imx-hdmi-soc, 
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=imxhdmisoc,DEV=0
    imx-hdmi-soc, 
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers

$ amixer set PCM 125
$ aplay /usr/share/sounds/alsa/Front_Center.wav
$ arecord -f cd -d 10 -D hw:0,0 test.wav
$ aplay test.wav