On 7/17/07, Hund, Michael <[EMAIL PROTECTED]> wrote: > > > Even on full speed devices, I had the problem of missing interrupt transfers > using libusb. This was the main reason to write ldusb for interrupt > transfers. > > libusb cannot guarantee to handle an interrupt transfer in a time which is > shorter than the specified time between two interrupt transfers. Lost data > may be the result. >
Thanks for the info. I only have experiences with libusb and so far I like it very much. My main involvement with Linux is to support PICKit 2 programmer (an custom HID device and use interrupt transfer). I have done tests for various applications under Linux and FreeBSD, mainly the following two. 1) pk2: http://home.pacbell.net/theposts/picmicro/ 2) Piklab: http://piklab.sourceforge.net/ To me libusb works fine with Interrupt transfer for Microchip 18F USB MCU based project under Linux. They actually work too even under FreeBSD (which is said to have a fragile libusb implementation) with a bit of tweaking. http://lists.freebsd.org/pipermail/freebsd-usb/2007-April/003182.html Regards, Xiaofan ------------------------------------------------------------------------- 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
