NXP Semiconductors UM11490 - Page 56

NXP Semiconductors
UM11490
Feature Configuration Guide for NXP-based Wireless Modules on i.MX 8M Quad EVK
Step 4 - Start pulseaudio on i.MX 8M Quad EVK
root@imx8mqevk:~# pulseaudio &
Command output:
[1] 507
root@imx8mqevk:~#
Step 5 - List the available sink devices
root@imx8mqevk:~# pacmd list-sinks | egrep '(index|name):'
Command output example:
index: 0
name: <alsa_output.platform-sound-bt-sco.mono-fallback>
index: 1
name: <alsa_output.platform-sound-spdif.stereo-fallback>
* index: 2
name: <alsa_output.platform-sound-wm8524.stereo-fallback>
root@imx8mqevk:~#
Step 6 - Set external sink device as default sink
root@imx8mqevk:~# pacmd set-default-sink <index number of external
sink device>
Note: As the i.MX 8M Quad EVK does not have a built-in mic, an external USB audio
mic adapter is required to enable the two-way audio.
Step 7 - List the available source devices
root@imx8mqevk:~# pacmd list-sources | egrep '(index|name):'
Command output example:
index: 0
name: <alsa_output.platform-sound-bt-sco.mono-fallback.monitor>
* index: 1
name: <alsa_input.platform-sound-bt-sco.mono-fallback>
index: 2
name: <alsa_input.platform-sound-micfil.stereo-fallback>
index: 3
name: <alsa_output.platform-sound-spdif.stereo-fallback.monitor>
index: 4
name: <alsa_input.platform-sound-spdif.stereo-fallback>
index: 5
name: <alsa_output.platform-sound-wm8524.stereo-
fallback.monitor>
root@imx8mqevk:~#
UM11490 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2021. All rights reserved.
User manual Rev. 2 — 29 January 2021
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