[AudioI] Nothing works on RPi3b+

[Matt]

On 19/10/20 10:17 am, Ian McKellar wrote:
> Hmm, still no luck. I tried matching the mixer settings from that 
> linked forum post but had the same issue:
> pi at raspberrypi:~ $ aplay loop.wav
> Playing WAVE 'loop.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, 
> Stereo
> aplay: pcm_write:2053: write error: Input/output error
>
It is possible this is a hardware error, if for example the clocks don't 
come up and the play command hangs for too long - it will throw an error.

However to be sure, perhaps you can try speaker-test :

speaker-test -Dplughw:0 -r48000 -c 2 -F S32_LE

You should hear noise coming out the speakers or the headphones.

The mixer settings below look ok.


> Here's the amixer output:
> Simple mixer control 'Master',0
>   Capabilities: pvolume
>   Playback channels: Front Left - Front Right
>   Limits: Playback 0 - 127
>   Mono:
>   Front Left: Playback 121 [95%] [0.00dB]
>   Front Right: Playback 121 [95%] [0.00dB]
> 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 0 [0%] [-15.00dB]
> Simple mixer control 'Line',0
>   Capabilities: cswitch
>   Capture channels: Front Left - Front Right
>   Front Left: Capture [on]
>   Front Right: Capture [on]
> 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: 1 [100%] [20.00dB]
> 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 23 [74%] [0.00dB]
>   Front Right: Capture 23 [74%] [0.00dB]
> 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: 'Mic'
> Simple mixer control 'Output Mixer HiFi',0
>   Capabilities: pswitch pswitch-joined
>   Playback channels: Mono
>   Mono: Playback [on]
> 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 Sun, Oct 18, 2020 at 1:32 PM Matt <matt at audioinjector.net 
> <mailto:matt at audioinjector.net>> wrote:
>
>     Hi Ian,
>
>     On 18/10/20 10:00 am, Ian McKellar via People wrote:
>>     I bought an AudioInjector Zero and I can't get it to work on the
>>     hardware I have.
>>
>>     I believe I have it configured correctly. I'm running Linux
>>     5.4.70-v7+ and have
>>
>>         dtparam=i2c_arm=on
>>         dtparam=i2s=on
>>         dtoverlay=audioinjector-wm8731-audio
>>
>>     in /boot/config.txt
>>
>>     During boot dmesg gets:
>>     [    8.939739] audioinjector-stereo soc:sound: ASoC: failed to
>>     init link AudioInjector audio: -517
>>     [    8.939762] audioinjector-stereo soc:sound:
>>     snd_soc_register_card failed (-517)
>>     [    9.295473] audioinjector-stereo soc:sound: ASoC: failed to
>>     init link AudioInjector audio: -517
>>     [    9.295496] audioinjector-stereo soc:sound:
>>     snd_soc_register_card failed (-517)
>>     [    9.330667] audioinjector-stereo soc:sound: ASoC: failed to
>>     init link AudioInjector audio: -517
>>     [    9.330692] audioinjector-stereo soc:sound:
>>     snd_soc_register_card failed (-517)
>>     [   10.051168] wm8731 1-001a: Assuming static MCLK
>>     [   10.051223] wm8731 1-001a: 1-001a supply AVDD not found, using
>>     dummy regulator
>>     [   10.051357] wm8731 1-001a: 1-001a supply HPVDD not found,
>>     using dummy regulator
>>     [   10.051452] wm8731 1-001a: 1-001a supply DCVDD not found,
>>     using dummy regulator
>>     [   10.051574] wm8731 1-001a: 1-001a supply DBVDD not found,
>>     using dummy regulator
>>     [   10.067882] audioinjector-stereo soc:sound: wm8731-hifi <->
>>     3f203000.i2s mapping ok
>>
>
>     Good news, this last line indicates that the sound card is setup
>     in software and ready to go.
>
>
>>     But when I try to play something, eg: aplay
>>     /usr/share/sounds/alsa/Noise.wav
>>     it hangs and doesn't appear to be actually playing anything. Also
>>     dmesg gets:
>>     [  224.002383] bcm2835-i2s 3f203000.i2s: I2S SYNC error!
>>
>
>     This dmesg error isn't related to the soundcard, it is related to
>     the Pi's I2S driver.
>
>
>>     Any ideas? Might I have done a terrible job soldering the pin socket?
>>
>>
>
>     Have you toggled the setting in alsamixer which enables the output
>     mixer hifi ? You can read about it on our old forum :
>
>     http://forum.audioinjector.net/viewtopic.php@t=5.html#p7
>
>     thanks
>
>     Matt
>
>
>     -- 
>     Checkout the community email list :
>     https://lists.audioinjector.net/mailman/listinfo/people
>
>
>
> -- 
> Ian McKellar <http://ian.mckellar.org/>
> ian at mckellar.org <mailto:ian at mckellar.org> - http://twitter.com/ian

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