2011-04-19 11:46:57     WebCam on BF548 Ez board

Document created by Aaronwu Employee on Aug 26, 2013
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2011-04-19 11:46:57     WebCam on BF548 Ez board


Message: 100005   


Hi developers~:


   Currently i am trying to connect a web cam to my board by following https://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:drivers:usb_video_device_class.


   After a property configuration i have got those problem:


SDL information:

  Video driver: fbcon

  Hardware surfaces are available (382k video memory)

Device information:

  Device path:  /dev/video1

Stream settings:

  Frame format: MJPG

  Frame size:   640x480

  Frame rate:   30 fps

Unable to map buffer: Invalid argument

Init v4L2 failed !! exit fatal


   Then i was doing some research, found a commit name 9703 at   blackfin.uclinux.org/git/?p=linux-kernel;a=commit;h=8aaa07f7d4f551852179dd667a41de8f9898c043 but additional problem is the linux kernel for blackfin processor might be very customize so some codes are different compare to the documents on that website and some documents are in different location. So i am guessing there should be have another path to slove this case. Cause some other developers have their WebCam working on that board quite well.




2011-04-19 17:49:58     Re: WebCam on BF548 Ez board

Mike Frysinger (UNITED STATES)

Message: 100006   


what version of software are you using exactly ?




2011-04-27 21:22:30     Re: WebCam on BF548 Ez board


Message: 100216   


Thanks for reply...and the issue has been fixed so i just close it