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AOM-3841 AUDIO MIC1/OUT1 & MIC2/OUT2

Contents​

  • 1AOM-3841 supports three kinds of sound cards:
  • 2AUDIO MIC1/OUT1（Compatible with ROM-EG57）
  • 3AUDIO MIC2/OUT2（Compatible with ROM-EG57）
  • 4Audio Test
  • 5Get sound card ID
  • 6Record
  • 7Playback.
  • 8RKTool指令：

AOM-3841 supports three kinds of sound cards:​

“1 rt5640-codec”(9696EG57001) “2 hdmi”, “3 dp0

Set the default audio output when playing media files. 1. Click “Applications” ->”Multimedia”->”PulseAudio Volume Control”. 2. Select “Build-in Audio stereo” for rt5640-codec output, or select “HDMI” for  HDMI output, or select “Build-in Audio Display Port 1 Stereo” for DP output.

Mute and Volume Control Mute and volume can be configured by GUI.

AUDIO MIC1/OUT1（Compatible with ROM-EG57）​

HW Pin Header

I2S0 Connector Pin Definition
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

AUDIO MIC2/OUT2（Compatible with ROM-EG57）​

HW Pin Header

I2S1 Connector Pin Definition
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

Audio Test​

Get sound card ID​

# cat /proc/asound/cards
0 [rockchiprt5640c]: simple-card - rockchip,rt5640-codec
 rockchip,rt5640-codec
1 [rockchipdp0 ]: rockchip-dp0 - rockchip-dp0
 rockchip-dp0
2 [rockchiphdmi ]: rockchip-hdmi - rockchip-hdmi
 rockchip-hdmi

Record​

Take Card ID 0 for example:

# CARD_ID=0
# arecord -c 2 -Dplughw:$CARD_ID,0 -f S16_LE -r 16000 -d 10 -t wav 
test.wav  

Playback.​

Take Card ID 0 for example:

# CARD_ID=0
# arecord -c 2 -Dplughw:$CARD_ID,0 -f S16_LE -r 16000 -d 10 -t wav 
test.wav

See details of the usage of “aplay”:

# aplay --help
… …
-D, --device=NAME select PCM by name
-t, --file-type TYPE file type (voc, wav, raw or au)
… …

RKTool指令：​

# cat /proc/asound/cards
# /tools/test/adv/audio/audio_record_test.sh 0
# /tools/test/adv/audio/audio_play_test.sh 0