---------------------------------------- > Date: Fri, 24 Jul 2009 11:12:48 +0200 > From: clemens@xxxxxxxxxx > To: sid6582@xxxxxxx > CC: alsa-devel@xxxxxxxxxxxxxxxx > Subject: Re: Help with multichannel High Speed USB audio device > > Laurent . wrote: >> I made an embedded device that has a CODEC with 6 inputs connected to an ARM9 >> micro-controller that has an integrated high-speed USB controller. >> Now, I need to write the USB code on that micro-controller so that i can capture those >> channels in real-time at 24bits / 48 KHz with low latency (ie. sub 10ms), on a computer. >> >> I only need my device to work with Linux, and if possible, I would like to avoid writing a device >> driver on the Linux-side. >> >> Is there already such a USB audio driver available that I could nearly use "as is" and to which >> i would conform ? > > Yes, snd-usb-audio. > >> Would you have some general guideline on how to write the high-speed USB device code ? > > Just conform to the USB (2.0) and USB Audio (1.0) specifications. > >> For simplicity, my device is going to be the "clock master" of the system since it is already has >> the exact clock that drives the CODEC. > > So you'd use an asynchronous endpoint. > > > Best regards, > Clemens _________________________________________________________________ Bing™ brings you maps, menus, and reviews organized in one place. Try it now. http://www.bing.com/search?q=restaurants&form=MLOGEN&publ=WLHMTAG&crea=TXT_MLOGEN_Local_Local_Restaurants_1x1 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
