GORAN RADIVOJEVIC wrote: > > Few minutes after I send previous message I remove last two endpoints > (Iso) and now SetAltInterface working as > expected (in libusbx and libusbK).
That's revealing. Are you quite sure that your Atmel device supports isochronous endpoints? Which Atmel chip are you using? > Now I have working Interrupt (for commands) and Bulk endpoints (audio > stream), both 64 byte but with Iso EP problems returns. As I recall, you had two interrupt endpoints with 64-byte packets and two isochronous endpoints with 256-byte packets. Right? That's a total of 640 bytes per frame. That's 50% of the total available bandwidth for full-speed devices. If you had any other interrupt or isochronous devices reserving bandwidth, that could have been enough to cause your allocation to fail. Did I already ask if you were you doing this in a virtual machine? Do you happen to have a video camera set up? > I managed to loop through uC stereo audio stream 48k/24bit using Bulk > transfer but on higher rates audio is choppy. Atmel controller is only > full speed capable, is this my problem? Bulk gets whatever bandwidth is left over after all of the other reservations. The timing is unpredictable. -- Tim Roberts, t...@probo.com Providenza & Boekelheide, Inc. ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb _______________________________________________ libusbx-devel mailing list libusbx-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libusbx-devel
