Neo1973 WM8753/Alsa Configuration
alastair at truebox.co.uk
Wed Oct 1 10:48:24 CEST 2008
Kyle Bassett wrote:
> Hey guys,
> I am attempting to utilize the Neo as a mobile filtering system for a
> project, using alsa and dmix's features for the audio modification. I
> am able to get the Neo to record and playback, but not simultaneously.
> I have been attempting to merge the two .state files to allow
> simultaneous rec/playback, but haven't been successful.
> Playback only:
> #alsactl -f /usr/share/openmoko/scenarios/stereoout.state restore
> #aplay --device neo1973 -f cd /media/card/song.wav
> Recording only:
> #alsactl -f /usr/share/openmoko/scenarios/capturehandset.state restore
> #arecord --device neo1973 -f cd /media/card/mic_audio.wav
> ...and when I try to perform something like:
> #arecord -D neo1973 -f cd | aplay -D neo1973 -f cd
> it execs successfully but I don't end up hearing any audio output. I
> have also tried changing the DAI Mode to 2 with no luck. I was not able
> to find a wiki page describing the the controls in the alsa mixer/.state
> files...and how those controls are routed to the hardware. I've been
> trying to parse the Neo1973 Audio Subsystem page with no luck.
> Any ideas are much appreciated! (I will update the wiki with any
I know there are some differences between the Freerunner and the 1973,
but it is probably worth looking at
http://www.koolu.org/voip-handset.state since voip apps route the
handset mic and earpiece to the PCM interface.
More information about the hardware