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DM8148 video capture doesn't work

Steven Wu
Prodigy 40 points

I'll appreciate if anyboday can look at this issue for me.

DM8148 EVM with the lasted SDK ezsdk_5_05_02_00_dm814x, the video capture by gst-launch dosn't work. I tried many gst-launch v4l2src xx with video format fourcc YUY2, always get output like: GstV4l2Src:v4l2src0: Could not negotiate forma. If change the format fourcc to something else like GRAY, error will be: WARNING: erroneous pipeline: could not link v4l2src0 to omxbasectrl.

Firmware call in load-hd-firmware.sh under /etc/init.d, the line to load v4l2 firmware like:

firmware_loader $HDVPSS_ID /usr/share/ti/ti-media-controller-utils/dm814x_hdvpss_v4l2.xem3 start -i2c 0

And at the bootup phase, get some error like:

Loading HDVPSS Firmware (V412)
FIRMWARE: Memory map bin file not passed
Usage : firmware_loader <Processor Id> <Location of Firmware> <start|stop> [-mmap <memory_map_file>] [-i2c <0|1>]
===Mandatory arguments===
<Processor Id>         0: DSP, 1: Video-M3, 2: Vpss-M3
<Location of Firmware> firmware binary file
<start|stop>           to start/stop the firmware
===Optional arguments===
-mmap                  input memory map bin file name
-i2c                   0: i2c init not done by M3, 1(default): i2c init done by M3
FIRMWARE: isI2cInitRequiredOnM3: 0
FIRMWARE: Default memory configuration is used
Firmware Loader debugging not configured
Default FL_DEBUG: warning
Allowed FL_DEBUG levels: error, warning, info, debug, log
MemCfg: DCMM (Dynamically Configurable Memory Map) Version :  2.1.2.1
FIRMWARE: 2 start Successful
VPSS_FVID2: M3 firmware version 0x1000145 is newer,driver may not work properly.
omap_i2c omap_i2c.3: timeout waiting for bus ready
I2C: Transfer failed at vps_ti814x_select_video_decoder 188 with error code: -110
Configuring fb0 to LCD
HDMI W1 rev 4.0
HDMI CEC Spec version 1.2
I2C No Ack

Please advise!

  • 0
    TI__Guru* 80190 points

    Hello,

    If you want to use v4l2 you should load dm816x_hdvpss_v4l2.xem3 binary.

    You could check here:

    /ti-ezsdk_dm814x-evm_5_05_02_00/docs

    DM814x_EZ_Software_Developers_Guide.pdf

    chapter: How to change from OMX to V4L2 firmware for
    capture/display


    This error 'Could not negotiate format' indicates some params are not set right in GstV4l2Src/V4l2 driver layer or not supported by camera, but gstreamer component is asking. So, it is better to try capture using only V4l2 level, with  Gstreamer and make it work. After that try with Gstreamer.

    So, it will be better first to try this demos:

    http://processors.wiki.ti.com/index.php/TI81XX_PSP_VIDEO_CAPTURE_Driver_User_Guide#Sample_Applications

    Please follow the steps in the user guide.

    Could you posting the pipelines and  bootargs too?

    Let me know the result.

    Best Regards,

    Margarita