2008-10-30 14:03:02 luvcvideo just shows blank screen

Omar Chanouha (UNITED STATES)

Message: 64456

I have a BF548 and a logitech quickcam 9000 camera. I have follwed the isntructions provided in the wiki that says both of these devices should work together. Everything seems to work fine. I get exactly the same output that they do in the wiki. However, when when luvcview starts I only get a blank screen, although the camera's red led is on. When I try mplayer I only get static. I have plugged the camera into the usb otg port via the provided cable. Is this correct? Do I need to enable some jumper, or use a different port?

Thanks!

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2008-10-30 14:20:44 Re: luvcvideo just shows blank screen

Michael Hennerich (GERMANY)

Message: 64458

In folder:

uclinux-dist type

>make bugreport.

Attach created bugreport.tgz file and send the entire kernel startup and command messages.

-Michael

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2008-10-30 15:48:06 Re: luvcvideo just shows blank screen

Omar Chanouha (UNITED STATES)

Message: 64468

Here are the files you requested. I hope this is what you need.

02_telnet_commands.txt

00_bugreport.tgz

01_dmesg_startup.txt

03_dmesg_tail_aftercommands.txt

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2008-10-31 12:19:08 Re: luvcvideo just shows blank screen

Michael Hennerich (GERMANY)

Message: 64546

Can you use attached Linux .config (copy this file to linux-2.6.x/.config)

I think your v4l2 settings were wrong.

The driver works for me.

-Michael

root:/> modprobe uvcvideo

usbcore: registered new interface driver uvcvideo

USB Video Class driver (SVN r7277)

root:/> usb 1-1: new high speed USB device using musb_hdrc and address 2

usb 1-1: configuration #1 chosen from 1 choice

uvcvideo: Found UVC 1.00 device <unnamed> (046d:0990)

uvcvideo: Failed to query (135) UVC control 1 (unit 0) : 0 (exp. 26).

input: UVC Camera (046d:0990) as /class/input/input1

root:/> export SDL_NOMOUSE=1

root:/> luvcview -f yuv -s 320x240 -i 15

luvcview 0.2.4

SDL information:

Video driver: fbcon

Hardware surfaces are available (382k video memory)

Device information:

Device path: /dev/video0

Stream settings:

Frame format: YUYV

Frame size: 320x240 (requested size 3320x240 is not supported by device)

Frame rate: 15 fps

Quit signal received.

Cleanup done. Exiting ...

root:/> version

kernel: Linux release 2.6.26.5-ADI-2009R1-pre-svn5493-dirty, build #8725 Fri Oct 31 17:13:09 CET 2008

toolchain: bfin-linux-uclibc-gcc release gcc version 4.1.2 (ADI svn)

user-dist: release svn-7277, build #2971 Fri Oct 31 17:12:33 CET 2008

root:/>

config_uvcvideo

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2008-10-31 16:16:32 Re: luvcvideo just shows blank screen

Omar Chanouha (UNITED STATES)

Message: 64554

Hey Michael,

I tried with your config, but I am still getting the same error. SDL initializes and the mouse appears. Then after a second the camera light turns on, but then nothing happens. No errors, no messges, nothing. Would it be too much to ask you to post your uImage.initramfs so I can be sure wether or not it is a hardware or software issue? I can give you the link to my ftp site if you like.

Thanks for the help so far, I appreciate it

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2008-11-04 13:37:09 Re: luvcvideo just shows blank screen

Omar Chanouha (UNITED STATES)

Message: 64666

I have been using the 2_6_26 uImage you gave me, and I have been getting the same results. Everything looks exactly like it does on your forum posts, but I end up with a blank screen with a mouse. During one of about 30 runs I did manage to actually get a single frame, but then it froze. I then hit ctrl-c and after a few min I get this error:

Quit signal received.

Unable to dequeue buffer: Input/output error

Error grabbing

Cleanup done. Exiting ...

Here is the error I get from dmesg:

musb_host_rx 1550: Rx interrupt with no errors or packet!

I looked into the musb driver and this is a protocol error. Again, I am plugging the camera into the USB OTG port b/c the mini-usb port seems to be only for debugging. Is there some jumper or board setting that I have to have in order to get USB OTG to behave like a regular usb device? Is there perhaps something in uboot that needs to be enabled for this to work? I am using your kernel/filesystem so the issue must be either on the board or in u-boot?

Hardware:

EZ-KIT LITE Rev 1.3 BOM 1.7

ADSP-BF548 * BBCZ-5X

How do I know when the HID device is detected? Can you post what the dmesg should look like?

Thanks!

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2008-11-05 16:16:33 Re: luvcvideo just shows blank screen

Michael Hennerich (GERMANY)

Message: 64713

Omar,

you have pretty much the same board than I test with:

>How do I know when the HID device is detected? Can you post what the dmesg should look like?

input: UVC Camera (046d:0990) as /class/input/input1

-Michael

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2008-11-06 16:03:06 Re: luvcvideo just shows blank screen

Omar Chanouha (UNITED STATES)

Message: 64781

Yes, I get that message. If I do not, then /dev/video0 is not created, but that does not happen very often. Do you get the error I posted?

musb_host_rx 1550: Rx interrupt with no errors or packet!

This error is leading me to believe that my issue has something to do with a switch/jumper that is making the USB OTG behave differently then yours. Did you change anything from the stock board?

Sorry to be such a bother, but this is killing me

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2008-11-06 16:31:36 Re: luvcvideo just shows blank screen

Michael Hennerich (GERMANY)

Message: 64785

No I don't get this error in particular.

Does other USB stuff work for you - try USB Mass Storage etc. ...?

-Michael

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2008-11-07 11:57:03 Re: luvcvideo just shows blank screen

Omar Chanouha (UNITED STATES)

Message: 64846

I just hooked up a usb stick and everything worked fine. I was able to read/write. I did notice that when I used the latest u-boot my ethernet stoppped working. That is why I would like to use the same u-boot you are using, other then hardware, that is the only difference between our boards. Could you post your u-boot, or just tell me what version it is?

Thanks for all the help, sorry this is such a hassle

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2008-11-07 14:29:27 Re: luvcvideo just shows blank screen

Michael Hennerich (GERMANY)

Message: 64854

don't know from top of my head.

Just a guess -

check u-boot.1.1.6 two months ago ...

Will check latest u-boot and see if it makes a difference for me - however I don't think so.

-Michael

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2008-11-24 12:10:35 Re: luvcvideo just shows blank screen