Re: OMAP5912 AIC23

[Steve Poulsen <spoulsen@css-design.us>]

Yuri,

We have had good luck with ARM audio under this setup.  We did write our 
own AIC23 drivers which we used directly from our application.  We used 
a device entry (/dev/aic23) that hooked in our driver.  We were able to 
open those in any application and play/record or both.  The only 
possible problem was if we tried to do things like "cat file.pcm > 
/dev/aic23".  Although this would work, some cases would not work due to 
those applications buffering schemes.  For example, this was bad:  "cat 
/dev/aic23 > /dev/aic23".   It would work, but would be choppy. 

How are you playing audio?

Steve

Yuri Jaeger Monti wrote:
> Hi fellows,
>
> I tried everything I could to solve the buffer underrun error's while
> playing some audio in the OSK5912 with the AIC23, and I don't know
> what should I do anymore.
> I'm trying to simply output and audio file via the ARM, I think this
> should be ok but the audio is always choppy.
> Am I doing something wrong? Or perhaps should I use only the DSP
> processor to play the audio? (didn't tried this yet because I need the
> DSP to do other tasks).
>
> Cheers
>
> ---
> Yuri Jaeger Monti
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