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Edge2 and ES8316 Audio Usage
ES8316 codec usage require Edge2 IO extension board.
Alsa audio device HW name
~# aplay -L | grep rockchipes8316c -m1 hw:CARD=rockchipes8316c,DEV=0 ~# arecord -L | grep rockchipes8316c -m1 hw:CARD=rockchipes8316c,DEV=0
Access to es8316 will be available by hw:CARD=rockchipes8316c alsa audio device HW name, for example: aplay -D hw:CARD=rockchipes8316c …
Alsa audio device HW index
~# arecord -l | grep es8316-codec -A2 card 3: rockchipes8316c [rockchip,es8316-codec], device 0: fe470000.i2s-ES8316 HiFi ES8316 HiFi-0 [fe470000.i2s-ES8316 HiFi ES8316 HiFi-0] Subdevices: 1/1 Subdevice #0: subdevice #0 ~# aplay -l | grep es8316-codec -A2 card 3: rockchipes8316c [rockchip,es8316-codec], device 0: fe470000.i2s-ES8316 HiFi ES8316 HiFi-0 [fe470000.i2s-ES8316 HiFi ES8316 HiFi-0] Subdevices: 1/1 Subdevice #0: subdevice #0
The sound card 3 is the ES8316 device and audio device HW index is 3.
Record from ES8316
arecord -D hw:CARD=rockchipes8316c -f cd -d 20 record.wav
or by audio device HW index (will be 3 for this example)
arecord -D hw:3 -f cd -d 20 record.wav
The headphone mic has the higher priority than the AMIC, which means if you connect the headphone then will record from the headphone mic, otherwise record from the AMIC.
Playback from ES8316
aplay -D hw:CARD=rockchipes8316c xxx.wav
or by audio device HW index (will be 3 for this example)
aplay -D hw:3 xxx.wav
The headphone has the higher priority than the speaker, which means if you connect the headphone then will play from the headphone, otherwise play from the speaker.