[AudioI] [AudioI - stereo + zero] Issues with Injector Zero

[Colin Ngu]

Hi Matt,

with the aplay -l command, I get the following response:

card 0: audioinjectorpi [audioinjector-pi-soundcard], device 0:
AudioInjector au                       dio wm8731-hifi-0 []

  Subdevices: 1/1

  Subdevice #0: subdevice #0


with the amixer command, I get these response. The difference is Mono
playback=Off instead on "On".

Simple mixer control 'Master',0

  Capabilities: pvolume

  Playback channels: Front Left - Front Right

  Limits: Playback 0 - 127

  Mono:

  Front Left: Playback 90 [71%] [-31.00dB]

  Front Right: Playback 90 [71%] [-31.00dB]

Simple mixer control 'Master Playback ZC',0

  Capabilities: pswitch

  Playback channels: Front Left - Front Right

  Mono:

  Front Left: Playback [off]

  Front Right: Playback [off]

Simple mixer control 'Sidetone',0

  Capabilities: pvolume pvolume-joined

  Playback channels: Mono

  Limits: Playback 0 - 3

  Mono: Playback 2 [67%] [-9.00dB]

Simple mixer control 'Line',0

  Capabilities: cswitch

  Capture channels: Front Left - Front Right

  Front Left: Capture [off]

  Front Right: Capture [off]

Simple mixer control 'Mic',0

  Capabilities: cswitch cswitch-joined

  Capture channels: Mono

  Mono: Capture [off]

Simple mixer control 'Mic Boost',0

  Capabilities: volume volume-joined

  Playback channels: Mono

  Capture channels: Mono

  Limits: 0 - 1

  Mono: 0 [0%] [0.00dB]

Simple mixer control 'Playback Deemphasis',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [off]

Simple mixer control 'Capture',0

  Capabilities: cvolume

  Capture channels: Front Left - Front Right

  Limits: Capture 0 - 31

  Front Left: Capture 0 [0%] [-34.50dB]

  Front Right: Capture 0 [0%] [-34.50dB]

Simple mixer control 'ADC High Pass Filter',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [on]

Simple mixer control 'Input Mux',0

  Capabilities: enum

  Items: 'Line In' 'Mic'

  Item0: 'Line In'

Simple mixer control 'Output Mixer HiFi',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [off]

Simple mixer control 'Output Mixer Line Bypass',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [off]

Simple mixer control 'Output Mixer Mic Sidetone',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [off]

Simple mixer control 'Store DC Offset',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [off]



On Tue, Feb 18, 2020 at 10:37 AM Matt <matt at audioinjector.net> wrote:

> Hi
> On 18/2/20 12:16 pm, Colin Ngu via People wrote:
>
> Hi,
>
> I'm am running Retropie on my pi zero, and I would like to route the sound
> output using the Audioinjector HAT.  But no success so far.
>
>
> Sounds like fun, I have a MAME arcade hardware breakout from the '90s !
>
>
> I have modified config.txt with following command;
> dtparam=i2c_arm=on
>
> dtparam=i2s=on
>
> dtparam=spi=on
>
> dtparam=audio=off
> dtoverlay=audioinjector-wm8731-audio
>
> Typically the config.txt file only needs the following (dtparam=audio=off
> is probably ok) :
>
> #dtparam=audio=on
>
> dtoverlay=audioinjector-wm8731-audio
>
> To be sure, you can enable i2c and i2s but may not be necessary :
>
> dtparam=i2c_arm=on
> dtparam=i2s=on
>
>
> In the retropie settings menu, I have set the following;
>
> Audio Card: SYSDEFAULT
>
> Audio Device: MASTER
>
> This is setting that has does not show any error.. But still no sound.
>
> I have also tried the hat on raspberry pi4 running on rabian buster. The
> config.txt file is modified, and Raspbian seems to be able to detect the
> soundcard. But still not getting any sound.
>
>
> Ok this is good, indicates it isn't a hardware issue. But we need to dig
> deeper.
>
> For starters, can you run raspbian and do the following ...
>
> Do you see the sound card when you type in :
>
> aplay -l
>
> Have you enabled the mixer appropriately ? Did you set the "Output Mixer
> HiFi" switch to on ? This will allow audio output on the sound card. You
> can use the alsamixer command to toggle it with a user interface.
>
> To check, when I type :
>
> amixer
>
> I get the following :
>
> Simple mixer control 'Output Mixer HiFi',0
>   Capabilities: pswitch pswitch-joined
>   Playback channels: Mono
>   Mono: Playback [on]
>
>
> Would this be hardware issue? How do I confirm it?
>
> Thanks in advance
>
> Colin
>
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>
>
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