I am working on a project using a generic (non-FPGA) cypress fx2 to test host controllers.
The good news is that Linux runs interrupt IN/OUTs at 3x1024 byte packets uframe, 24MBytes per second, over as long as I have tested, seconds. Verified by a bus analyzer. The not so good news is that I have not been able to get high bandwidth isoc to work. I am using a stock Ubuntu Feisty - 2.6.20.15 kernel. I am going through usbdevfs. On INs I get two 1024 packets per uframe, and on OUTs one 1024 packet per uFrame. It cannot be a device problem, because the host does not ask for more. So my questions are has this been tested? Is it a problem with my user mode program? Is my kernel too old? Should I keep looking for the cause? Thanks, Steve ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
