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MT9T111 connected to DM365 showing greenish picture

David Paul Agius
Prodigy 70 points

Hello everyone,

We currently have a setup consisting of an aptina image sensor (MT9T111 - SET TO YUV) connected to the dm365, and using Gstreamer we are able to get a picture, but the picture obtained is very green although one is still able to make sense out of the scene. (attached).

Currently  the ISIF is configured using

CCDCFG = 0x0810 -> (YCINSWP = 1, YPOS = 1)

MODSET = 0x2000 -> (YCBCR = 8BIT)

Our setup is MT9T111 > CCDC > GSTREAMER.  Ipipe is currently disabled.

Any ideas why we are getting this very green picture will be very appreciated.


Thanks in advance,

David



 
  • 0
    Guru 31670 points

    Have you dumped the data in hex and saw whether it has only Y component? Also you can try checking whether it is interleaved or planar or semiplanar. Also have you dumped the frame from the ISIF module itself and saw the output?

  • 0 in reply to Renjith Thomas
    Prodigy 70 points

    Hello Renjit, thanks for your reply.

    I have not done that yet, although it seems a very good idea. (I still need to find out how to dump data from the dma).

    However we have just found an issue with the hardware. The pins on the camera board that we have (LI-LBCM3M1) are not properly connected to the ISIF on the dm365. The green image we obtained earlier was being received  only on 4-bits of the YIN port. We have redesigned the hardware and currently waiting a proto board.

    thanks for your help just the same.

    regards,

    David