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

[Colin Ngu]

Hi Matt,

Yes I finally got the 'Output Mixer Hifi' to turn on. Now i am finally able
to get sound output.

Thanks a lot for the support!

Best regards,
Colin


On Tue, Feb 18, 2020 at 8:51 PM Matt <matt at audioinjector.net> wrote:

>
> On 18/2/20 10:48 pm, Colin Ngu wrote:
>
> 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 'Output Mixer HiFi',0
>
>   Capabilities: pswitch pswitch-joined
>
>   Playback channels: Mono
>
>   Mono: Playback [off]
>
>
> Yep, the first thing you have to do is toggle that to on. Either using the
> alsamixer command and using the UI or using the amixer command line
> interface.
>
>
>
> 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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