Featured Articles
Announcing Pi
Technical Specifications
Raspberry Pi FAQs
Win a Pi
Raspberry Pi Wishlist
Actions
Forum Thread Details
  • State Not Answered
  • Replies 29 replies
  • Subscribers 677 subscribers
  • Views 5095 views
  • Users 0 members are here
Related

Raspberry pi camera issue

Former Member

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.

Parents Reply Children
  • 0 in reply to clem57

    My same trouble cleared when I put on a headband magnifier and reseated flexible ribbon cable and made sure the push down locks really locked. One or both locks can be pulled up easily just by pulling or twisting the cable slightly. This happened to me when I was trying to arrange the cable in certain position.

    Another possibility,

    Clem

    PS I'd recommend you to buy a new camera. I managed to kill two by letting them flop onto the pi, exactly the same issues. Bit of an expensive mistake, so be careful! <== protect the electronics!

  • 0 in reply to clem57

    More info:

    Camera not working at all

    Example error message: "mmal: mmal_vc_component_create: failed to create component 'vc.ril.camera' (1:ENOMEM)"

    Make sure the flex cable is inserted the correct way on both ends, and each connector has the locking tab engaged. The RPi + camera draws about 260 mA more current when recording video, than without the camera. The Model B is about 550 mA by itself, so camera use pushes it over 800 mA. Some power supplies, cables, and polyfuses may not maintain 5V onboard at this current load well enough for reliable operation. You can check this with a voltmeter across TP1 and TP2.[15][16]

    In some cases, the micro-connector from the camera module to the camera board PCB has been loose. This can be fixed by removing and re-seating the small (tiny!) yellow flex cable connector labelled "P5V04A SUNNY" on the camera board. It makes a click when it is fully seated.[17] Note: before touching the camera board, make sure you are grounded, as the board is ESD sensitive (can be damaged by static shock).

    This error message also appear if you forgot to configure the configuration file of the Raspberry. Just type: sudo raspi-config and choose "5- Enable camera" option then "Enable"

    As of august 2014, with 2014-06-20-wheezy-raspbian.img, the firmware of a RPi B+ model needs to be updated : 

     $ sudo rpi-update

    Here is a working version : 

    $ vcgencmd version Aug 12 2014 18:21:28 Copyright (c) 2012 Broadcom version f32b2bbfdea55d48c9a52b92e5c798f9aa5f47bc (tainted) (release)  $ uname -a Linux poopdeck 3.12.26+ #703 PREEMPT Tue Aug 12 18:13:52 BST 2014 armv6l GNU/Linux  $ cat /proc/cpuinfo  | grep Revision
  • 0 in reply to clem57

    yep - re-seated it on this one and many of the others...

  • 0 in reply to clem57

    Yeah, Clem - as I mentioned before:

    Cables were swapped out.

    I tested the bad camera, you have the error message that I photographed (you can read it but it's blurry, and I pasted the text in this chain). "mmal: Received unexpected camera control callback event, 0x4f525245"

    I reseated the cable, have replaced the cable on many of the suspect ones, and mentioned that I reseated the camera module connector (see prior post).

    I have now reseated the bad camera after proving that a known good camera works (again see images). The suspect camera again fails with the same error I provided earlier.

     

    Please not that this is not solely *my* issue - there are many others with this same error... just google: mmal: Received unexpected camera control callback event, 0x4f525245"

     

    I will check on the FW state, though the problem does not follow the firmware version. I can reproduce good functionality on boards of all kinds as I can reproduce the failure on the same hardware - again, the problem seems to follow the camera hardware...