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Zedboard Video pipeline error - Unable to start streaming: Broken pipe(32)

vision3daerospace

Hello everybody,

I am building a simple videopipeline using petalinux 2019.1 and trying save images on the SD card , the following is my design

Camera -> MIPI-CSI-RX-Subysystem -> Demosaic -> Videoframe buffer write ->  ZYNQ-PS.

 

I have set the property using media-ctl when I use yavta -n 3 -c10 -f RGB24 -s 1280x720 --skip 7 -F /dev/video0

to sav the frame I get the following output saying broken pipe

Header 1

Device `video_cap output 0' on `platform:video_cap:0' is a video output (without mplanes) device.

Video format set: RGB24 (33424752) 1280x720 field none, 1 planes:

* Stride 3840, buffer size 2764800

Video format: RGB24 (33424752) 1280x720 field none, 1 planes:

* Stride 3840, buffer size 2764800

3 buffers requested.

length: 1 offset: 3201989144 timestamp type/source: mono/EoF

Buffer 0/0 mapped at address 0xb6b9c000.

length: 1 offset: 3201989144 timestamp type/source: mono/EoF

Buffer 1/0 mapped at address 0xb68f9000.

length: 1 offset: 3201989144 timestamp type/source: mono/EoF

Buffer 2/0 mapped at address 0xb6656000.

Unable to start streaming: Broken pipe (32).

3 buffers released.

Alternatively when I try to save images using

v4l2-ctl -d /dev/video0 --set-fmt-video=widhth=1280,height=720,pixelformat=RGB24 --stream-mmap --stream-count=1 --stream-to = test.raw

test.raw gets saved in the current directory but has no data and is of size 0 bytes.

 

I am attaching my hardware design, pl.dtsi and system-user.dtsi.

 

Any help is greatly appreciated, Thankyou in advance

Attachments:
design_1 (2).pdf
8255.system-user-dtsi.txt.zip
6014.pl-dtsi.txt.zip

  • Some additional info on the pcam products that are referenced in a similar post: MIPI CSI2 Rx Subsystem was not initialized !

     

    zedboard, FMC PCAM Adaptor

    zedboard + fmc + pcam

  • did you find a solution to this problem? I'm seeing the exact same issue.

  • in reply to vanti

    After a couple of tries, I found a solution to find capture data from zedboard.
    my initial pipeline was Camera -> MIPI-CSI-RX-Subysystem -> Demosaic -> Videoframe buffer write ->  ZYNQ-PS.

    This gave me more propblem broken pipeline, 0 bytes image with v4l2 command.

    I made changes in my setup ->
    First change -> on vivado design

    MIPI-CSI-RX-Subysystem -> VPSS -> Videoframe buffer write ->  ZYNQ-PS.

    Second, add these lines to device tree.


    chosen {

    bootargs = "console=ttyPS0,115200 earlyprintk root=/dev/mmcblk0p2 rw rootwait cma=256M";

    stdout-path = "serial0:115200n8";

    };


    third change - set CMA as 256 on kernel config.



    Fourth change --
    setup the media graph

     

    media-ctl -d /dev/media0 -V '"ov5640 1-003c":0 [fmt:UYVY/'1920x1080'@1/'15' field:none]'

    media-ctl -d /dev/media0 -V '"43c00000.mipi_csi2_rx_subsystem":0 [fmt:UYVY/'1920x1080' field:none]'

    media-ctl -d /dev/media0 -V '"43c00000.mipi_csi2_rx_subsystem":1 [fmt:UYVY/'1920x1080' field:none]'

    media-ctl -d /dev/media0 -V "\"43c80000.v_proc_ss\":0 [fmt:UYVY8_1X16/1920x1080 field:none]"

    media-ctl -d /dev/media0 -V "\"43c80000.v_proc_ss\":1 [fmt:RBG888_1X24/1920x1080 field:none]"


    Capture Command: yavta -n 3 -c10 -f RGB24 -s 1920x1080 -F /dev/video0

    PS: Make changes according to your media graph.

     

    These are the changes that helped me to fix the issue, although I have an overlapping images.

     

    Good luck! It was real pain to find the right solution