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Related

Raspberry pi camera issue

Former Member
Former Member over 11 years ago

When I try to read the camera I got the following debug error on the screen  "received unexpected camera control callback event 0x4f525245", can anybody help how to resolve this issue. or is this raspberry pi board has problem.

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  • rew
    0 rew over 11 years ago

    0x4f525245 read "ORRE" when interpreted as ASCII. Whatever that means....

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  • rew
    0 rew over 11 years ago

    0x4f525245 read "ORRE" when interpreted as ASCII. Whatever that means....

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  • gregoryfenton
    0 gregoryfenton over 11 years ago in reply to rew

    Read it backwards..

    Erro(r).

    Sounds like the routine is returning the pointer to the error message.

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  • rew
    0 rew over 11 years ago in reply to gregoryfenton

    Good spotting!

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  • Former Member
    0 Former Member over 11 years ago in reply to rew

    Did anyone come up with a solution for this? I've bought over twenty cameras and have only a few that remain working. I teach kids, and they love using the pi's with the cameras, but it's getting way to expensive to keep the class going by replacing the cameras. I've researched a bit and have found the problem is not going away, and may be related to board resources/conflicts.

     

    Anyone had any success with this?

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  • rew
    0 rew over 11 years ago in reply to Former Member

    You mean that you have say 20 identical raspberry pi's and 20 cameras and some have this issue? And when you buy a new camera, then the problem goes away (for a while)?


    That would strongly indicate that there is a hardware problem, and not a software problem as I thought at first....


    My instinct still tells me: check the boot configuration that you allocate enough memory to the GPU so that it can handle the camera properly....

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  • Former Member
    0 Former Member over 10 years ago in reply to rew

    What I am saying is that I purchase raspberry pi's for education, and I have well over twenty pi's, of all makes and models... and I have purchased over twenty cameras over the past two years. Since kids handle the cameras and the Pi's, I absolutely expect a breakage rate... and since the Pi's and cameras are not humongously expensive, that's OK. But the cameras are failing at a >%50 rate, meaning every year I have to re-purchase 5-10 cameras. What makes me more suspicious is that the cameras I handle are breaking at about the same rate as those the kids use. The problem follows the camera, so it does not appear to be the GPU allocation, I am typing this on a Pi 2 and the failed camera responds the same:  GPU memory bumped up from 128 to 256 - "mmal: Received unexpected camera control callback event, 0x4f525245" - these cameras appear to be really, really sensitive....

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  • clem57
    0 clem57 over 10 years ago in reply to Former Member

    charliegalliher,

         Please take a look at this: https://github.com/raspberrypi/linux/issues/435 . They seem to think the order of loading libraries is important. Also check level of Rasbian. Please report back your results.

    Cheers,

    Clem

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  • Former Member
    0 Former Member over 10 years ago in reply to clem57

    yep, Clem - I looked at that last fall followed the directions... had no effect. the problem follows the camera.

     

    On the Pi I emailed the report / gpu bump from - I am including a screenshot with the error that many (google the error) are seeing (raspistill -o).

    shut down the pi, swapped it out with a known good camera and got the following image (raspistill -o) - no chnaged to the pi2 with the latest wheezy with latest

    updates as of this morning, prior to the test... BTW, I reseated and then swapped out cameras, and reset the camera on-board connector on the suspect unit today, too...

    Images were taken within an hour of your last post (today)....


    thoughts?



    image

     

     

     

    image

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  • Former Member
    0 Former Member over 10 years ago in reply to Former Member

    What I meant to say in the somewhat incoherent response is that I swapped out the camera cables and re-seated them, today, and that no changes were made to the pi 2 between the time the suspect camera generated the error and the known good camera was connected. I just powered off the Pi 2 (sudo shutdown -h), unplugged it, swapped out the cameras, powered up the pi and re-ran the command.

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  • rew
    0 rew over 10 years ago in reply to Former Member

    Thanks for the confirmation.

     

    Have you also double checked that the suspect doesn't work again when you reconnect it?

     

    Can you check the suspect camera with the flatcable from the working one?

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  • Former Member
    0 Former Member over 10 years ago in reply to rew

    Yes, both on that Pi and on others. Also, the camera error (s) are the same across devices.

    This is a consistent issue. My thought is that something is shorting the camera - it would be great to know what it is, and what precautions to take if no fix for this problem is planned.

     

    Thanks

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