Kaustubh Sarwate wrote: > I have been trying to get the USB isochronous stack to work on a > development board supporting ARM 10 core. I built the kernel with > audio support and have been trying to cat a wav file into the > /dev/dsp device which is registered to the USB 2.0 audio speakers > I am using. The enumeration of the device works correctly and the > HC starts issuing SOF packets (which I have traced using a USB > analyzer). I execute the following command > > cat wmpaud1.wav > /dev/dsp > > The above command calls the function usb_audio_write() repeatedly in > the "audio.c" file in the "linux_2.6.11.11_source\drivers\usb\class" > directory.
I think the audio driver doesn't even know about USB 2.0. Try the ALSA driver (snd-usb-audio), preferably one from the latest ALSA version. HTH Clemens ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
