[AudioI] Nothing works on RPi3b+

Matt matt at audioinjector.net
Mon Oct 19 01:37:20 UTC 2020 

On 19/10/20 12:30 pm, Ian McKellar wrote:
> On Sun, Oct 18, 2020 at 6:16 PM Matt <matt at audioinjector.net> wrote:
>>
>> 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
> pi at raspberrypi:~ $ speaker-test  -Dplughw:0 -r48000 -c 2 -F S32_LE
>
> speaker-test 1.1.8
>
> Playback device is plughw:0
> Stream parameters are 48000Hz, S32_LE, 2 channels
> Using 16 octaves of pink noise
> Rate set to 48000Hz (requested 48000Hz)
> Buffer size range from 64 to 65536
> Period size range from 32 to 32768
> Using max buffer size 65536
> Periods = 4
> was set period_size = 16384
> was set buffer_size = 65536
>   0 - Front Left
> Write error: -5,Input/output error
> xrun_recovery failed: -5,Input/output error
> Transfer failed: Input/output error
>
>> You should hear noise coming out the speakers or the headphones.
> I hear a soft click through my headphones - sounds like the audio
> routing / dac / amp / whatever is being configured, but then nothing.
> The write error and following lines come after 20s.


OK - lets discuss this off list.


> I might try attaching a logic analyzer to the i2s pins tonight and see
> if I can see anything going by.
>> 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> 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 - http://twitter.com/ian
>>
>> --
>> Checkout the community email list :
>> https://lists.audioinjector.net/mailman/listinfo/people
>
>
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