[AudioI] Elk Audio OS

[Matt]

I'm interested to know how close a regular linux OS distro, such as 
buildroot or Raspbian can get to Elk's 1ms latency ? For the apps you 
want to run, if their scheduling priorities are set to a maximum, how 
close do you think it can get ?

Here is an example in code of what I mean by scheduling priority change 
: https://github.com/flatmax/gtkiostream/blob/master/include/ALSA/ALSA.H#L58

Matt

On 5/4/21 10:15 am, Christopher D'Costa wrote:
> Dang indeed. Was hoping for an Aussie bit of kit that I could try with 
> Elk given how long it takes for anything to ship.
>
> Cheers Matt! Thanks for looking into this.
>
> On Mon, 5 Apr 2021, 7:53 am Matt, <matt at audioinjector.net 
> <mailto:matt at audioinjector.net>> wrote:
>
>     Ouch ! Elk OS is all custom register writing !
>
>     Check here for example :
>
>     https://github.com/elk-audio/rpi-rtdm-audio-driver/blob/master/pcm5122-elk.c#L58-L70
>     <https://github.com/elk-audio/rpi-rtdm-audio-driver/blob/master/pcm5122-elk.c#L58-L70>
>
>     This will have to be a community support thing.
>
>     Matt
>
>     On 5/4/21 9:25 am, Christopher D'Costa wrote:
>>     This looks like the most detail I can find. The guys at Elk say
>>     it's possible, as long as the audio driver exists.
>>
>>     https://github.com/elk-audio/rpi-rtdm-audio-driver
>>     <https://github.com/elk-audio/rpi-rtdm-audio-driver>
>>
>>     https://source.denx.de/Xenomai/xenomai
>>     <https://source.denx.de/Xenomai/xenomai>
>>
>>
>>     The OS itself being for musicians seems better suited to the
>>     Audio Injector stuff than it is to the HiFiBerry.
>>
>>
>>
>>     On Mon, 5 Apr 2021, 5:55 am Matt, <matt at audioinjector.net
>>     <mailto:matt at audioinjector.net>> wrote:
>>
>>         Any information anywhere on the Elk Audio OS - what hardware,
>>         kernel, etc etc ?
>>
>>         On 4/4/21 11:36 am, Christopher D'Costa via People wrote:
>>>         It's the same ADC and DAC chip as the HiFiBerry from what I
>>>         can tell. So should be pretty straight forward right?
>>
>>
>>         They use different audio codecs. It will take some work.
>>
>>
>>>
>>>         On Sun, 4 Apr 2021, 8:06 am Randy Reichenbach,
>>>         <randaji at gmail.com <mailto:randaji at gmail.com>> wrote:
>>>
>>>             I'm sure hoping that someone responds with a "yes", but
>>>             I have a feeling it's currently, "not yet".
>>>
>>>             Here's a thread from a little over a year ago:
>>>             https://forum.elk.audio/t/is-the-elk-pi-hat-essential-for-running-the-elk-audio-os/128/4
>>>             <https://forum.elk.audio/t/is-the-elk-pi-hat-essential-for-running-the-elk-audio-os/128/4>
>>>
>>>             The existing ALSA based AudioInjector driver won't work
>>>             with Elk.  Someone would have to explicitly create a
>>>             real-time audio driver (again I'm hoping, but not finding).
>>>
>>>             The ray of sunshine might be that ELK did it for HifiBerry:
>>>             https://elk.audio/elk-audio-os-%e2%99%a5-hifiberry/
>>>             <https://elk.audio/elk-audio-os-%e2%99%a5-hifiberry/>
>>>
>>>             AudioInjector could probably help their sales if they
>>>             created an ELK driver for us.  Hint, hint.
>>>
>>>
>>>
>>>
>>>
>>>             On Sat, Apr 3, 2021 at 3:10 PM Christopher D'Costa via
>>>             People <people at lists.audioinjector.net
>>>             <mailto:people at lists.audioinjector.net>> wrote:
>>>
>>>                 Hey Michael,
>>>
>>>                 Do you know if Elk Audio OS will be compatible with
>>>                 any of your ADC ADC products?
>>>
>>>                 Cheers,
>>>                 Chris
>>>
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>>>                 People at lists.audioinjector.net
>>>                 <mailto:People at lists.audioinjector.net>
>>>                 https://lists.audioinjector.net/mailman/listinfo/people
>>>                 <https://lists.audioinjector.net/mailman/listinfo/people>
>>>
>>>
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>>
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