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717WP2: Audio Input Selection - Settings and Commands

The 717WP2 has two ways to input audio: HDMI and Line In. Audio can only play back from one input at a time.

Settings

There are five options for how to choose the audio source transmitted over the network. To select one of these options, log into the web interface of the 717WP2 and apply the desired command in the Console API box on the System -> Utilities section. (The device will reboot and use the new setting):

1) Always use HDMI Audio

(HDMI Video > HDMI Audio, VGA Video > HDMI Audio)

astparam s a_io_select hdmi;astparam save;reboot

2) Always use Line-In Audio

(HDMI Video > Line-In Audio, VGA Video > Line-In Audio)

astparam s a_io_select analog;astparam save;reboot

3) Choose Audio based on physical Line-In connection when using HDMI Video, or always use Line-In when using VGA Video [DEFAULT OPTION]

(HDMI Video + Line-In Unplugged > HDMI Audio, HDMI Video + Line-In Plugged > Line-In Audio, VGA Video > Line-In Audio)

astparam s a_io_select auto;astparam save;reboot

4) Choose Analog Audio if Line-In physically plugged in

(Line-In Plugged > Line-In Audio, Line-In Unplugged > HDMI Audio)

astparam s a_io_select auto_1;astparam save;reboot

5) Choose Audio based on the Video selected

(HDMI Video > HDMI Audio, VGA Video > Line-In Audio)

astparam s a_io_select auto_2;astparam save;reboot

Commands

The following commands can be sent to the WP2 Transmitter via TELNET to dynamically select the audio input and override the setting above. Keep in mind that these changes happen live and will not persist through a reboot of the WP2 Transmitter

Select Line-In Audio:

echo analog > /sys/devices/platform/1500_i2s/io_select

Select HDMI Audio:

echo hdmi > /sys/devices/platform/1500_i2s/io_select

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  • 16-Apr-2018
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