[Libusb-devel] USB2 performance / 1.0-CVS version?

[Sven D. <sd...@mp...>]

Hello,

I'm trying to develop software for an FX2LP chip-based 
USB2 board. Using libusb seemed like a convenient way
to write a simple user mode software. Unfortunately
I'm not getting the desired performance (max. 3Mb/sec).

I was wondering, if the 1.0 version in development will
tackle the problem? If been told that the issue is due
to the fact that not a sufficient number of URBs are
queued in one go.

My C programming experience is only at college level
and hints on directly accessing ioctl and usbfs seem
to be quite difficult. Furthermore, since there seem
only kernel header files available as documentation
for those.

Would installing a CVS-version of the 1.0 library offer
me multiple URB/high speed transfer rates with
usb_bulk_read/usb_bulk_write?

Best regards,

Sven

-----------------------------------------------------------------------------
Sven Duscha
Max Planck Institute for Extraterrestrial Physics (MPE)
Giessenbachstr. 1
85748 Garching
Germany
Email: sd...@mp...