Re: how to access obtain gpio via the alsa interface

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Steinwendtner wrote:
> I' m using an evaluation board with a cx20709 audio codec. This board is connected via usb to
> my laptop. It uses the snd_usb_audio module.
> There are some buttons (vol+, vol-, mute) and leds on the board.
> Audio is working fine. I use the alsalib to access it.
>
> My question is, how can I access those gpio's ?
> When I press e.g. the vol button, I see the volume slider on the gnome desktop window. But
> I would like to access this via my application, too.
> I could not find any alsa api calls for this.

This is probably done with an HID interface, in which case you have to use the corresponding input device.


Regards,
Clemens

------------------------------------------------------------------------------
Site24x7 APM Insight: Get Deep Visibility into Application Performance
APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month
Monitor end-to-end web transactions and take corrective actions now
Troubleshoot faster and improve end-user experience. Signup Now!
http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140
_______________________________________________
Alsa-user mailing list
Alsa-user@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/alsa-user



[Index of Archives]     [ALSA Devel]     [Linux Audio Users]     [Fedora Users]     [Fedora Desktop]     [Fedora SELinux]     [Big List of Linux Books]     [Yosemite News]     [Yosemite Photos]     [KDE Users]     [Fedora Tools]

  Powered by Linux