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--- products:sbc:edge2:applications:es8316 [2022/11/24 02:27]
ivan created
+++ products:sbc:edge2:applications:es8316 [2022/12/07 20:40]
hyphop [Alsa audio device HW index]
@@ Line 1: / Line 1: @@
-====== Edge2 ES8316 Codec ======
+====== Edge2 and ES8316 Audio Usage ======
+<WRAP important >
+ES8316 codec usage require [[|Edge2 IO extension board]].
+</WRAP>
+===== Alsa audio device HW name =====
+Access to **ES8316** codec will be available by ''hw:CARD=rockchipes8316c'' alsa audio device HW name, for example: ''aplay -D **hw:CARD=rockchipes8316c** ... ''
+```shell print ES8316 hw name
+~# aplay -L | grep rockchipes8316c -m1
+hw:CARD=rockchipes8316c,DEV=0
+~# arecord -L | grep rockchipes8316c -m1
+hw:CARD=rockchipes8316c,DEV=0
+```
+===== Alsa audio device HW index =====
+```shell print ES8316 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)
+```shell
+arecord -D hw:3 -f cd -d 20 record.wav
+```
+<WRAP info >
+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.
+</WRAP>
+===== Playback from ES8316 =====
+```shell
+aplay -D hw:CARD=rockchipes8316c xxx.wav
+```
+or by audio device HW index (will be ''3'' for this example)
+```shell
+aplay -D hw:3 xxx.wav
+```
+<WRAP info >
+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.
+</WRAP>
-{{page>products:sbc:common:applications:gpio:es8316&noheader}}

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