Am Sonntag, 13. Dezember 2020, 13:54:22 CET schrieb Sonali Warunjikar: > On Sun, Dec 13, 2020 at 12:51:34PM +0100, Sebastian Hilbert wrote: > > Have you asked the manufacturer for information on using this as a twain > > device ? > I thought I replied to that. This product's pages open only in German even > if I search on the English site. So could not find where to ask. > > For the encouraging words, thanks. I'll keep it up. > > As I mentioned the glaring gaps between wireshark and usbmon and quality > issues with the former are disappointing and so is the word length limit > in usbmon. > > Next time I take this up, I'd use the binary interface of usbmon to get > more reliable (hopefully) and complete data - probably next weekend. > > Also, will try and call ioctl directly in C when experimenting to avoid > any possibility of pyusb doing something wrong (this is not meant to > suspect so, just reducing the layers in between to reduce things that can > possibly hinder something). > > Will try and ask on sane mailing lists in the meantime. Thanks for the > suggestion and all other pointers.
If you want to try talking to the device look at https://github.com/JohnDMcMaster/usbrply[1] Would be interesting to see if you can replay a captured USB session. I wonder how you would be able to see that something is happening. Is there an LED that provides feeback ? In the worst case it does something (capture an image) but you will not notice. I guess it would return raw image data but there is no process to receive it. -------- [1] https://github.com/JohnDMcMaster/usbrply
