Our target 174f:a311 (and 174f:a821 and 05E1:0501) - Syntek Semicon USB2.0 Video - on Linux

How to help the development

 There are several ways to help us in our task, they are listed here below, if you're not a C programmer, provide us with logfiles and theories, however, if you "can C", help us by writing the code. Any patches that improve stability could help.

Have you still got Win installed?

 First of all we need usb snooping logs of the device's behaviour. Please collect as much different situations as you can and zip up the logfiles. Try to keep your snooping addiction under control, a 10 second session gives megabytes of data, attach a description of the actions taken while you were snooping along with the file, so we wouldn't be running blind here. An ideal match would be where you start logging, grab a picture from the device and stop logging.

• Snooping software
  • usbsnoopy: http://www.wingmanteam.com/usbsnoopy
  • usbsnoop: http://benoit.papillault.free.fr/usbsnoop
  • Source USB: http://www.sourcequest.com
  • USB Monitor: http://www.hhdsoftware.com/usbmon.html
• Give us your logfiles
  Sourceforge doesn't enable us to use that much space to upload them here, but you can still find a way to get them to us:
  • Use your personal webspace somewhere, give us the link
  • Use public transfer services and give us the link. (One possible location.)
  • Post the link here
  • Split the logfile in < 4Mb pieces, and mail it to me: kulminaator(atty)gmail.com
  • Contact us, there is probably a solution to every situation
• Analyze logs too, maybe your idea is better than ours.
  • Try just trace random theories, see if it holds.
  • Share your ideas with coders, they can check out if there's a point to it.
  • Try to pinpoint key points in logfiles

Can you write C ?

 It's always a good idea to have some extra hands on the code, but at first try to get familiar with the topic, using an usb device is not as simple as good old times of COM or LPT ports ... :

USB 2.0 Specification
http://www.usb.org/developers/docs/
Linux USB:
http://www.linux-usb.org/

Try to play around with the source, grab the current testing version and modify it as you think it should be done. The svn tree is open to you as well, so just fire ahead with the kernel driver if you are content enough.