On Tue, Nov 20, 2007 at 11:08:52AM +0000, Daniel Drake wrote: > Feel free to ask any questions on this list -- whether about USB in > general, fprint driver architecture, or otherwise. I'm really glad that > people are interested in contributing drivers and am happy to help.
Thanks for your suggestions. I've managed to send the first few packets and the light even turns on as if it's ready to scan, hoorah. I'm at the next hurdle now though - I've used usb_bulk_write() so far, but it seems the actual scanning of the finger transmissions are done isochronously, which as far as I can tell, libusb doesn't support (yet)? It seems odd, since I know that the binary application I have uses libusb - I even compiled my own libusb with some extra output and made it use that so I could see exactly what it was doing for the initialisation stuff - so I'm guessing it does something else for the isochronous transfers to get the finger image. Not really sure where to go from here - perhaps I'm wrong and it's doing something totally different - here are the first few lines of output from usbmon straight after clicking capture in the binary app in case it helps: c39af400 0.981505 S Zi:3:007:1 -:-606348325:-606348325 0 32224 < e656a400 0.981543 S Zi:3:007:1 -:-606348325:-606348325 0 32224 < c21f4400 0.981630 S Zi:3:007:1 -:-606348325:-606348325 0 32224 < f131a800 0.981724 S Zi:3:007:1 -:-606348325:-606348325 0 32224 < c4352c00 0.981810 S Zi:3:007:1 -:-606348325:-606348325 0 32224 < ca8cb800 0.981886 S Zi:3:007:1 -:-606348325:-606348325 0 32224 < f490f500 0.981921 S Zi:3:007:1 -:-606348325:-606348325 0 10070 < Thanks for the help, Philip _______________________________________________ fprint mailing list [email protected] http://lists.reactivated.net/mailman/listinfo/fprint
