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TI Home » TI E2E Community » Support Forums » Embedded Software » Linux » Linux forum » mt9p031 standard not supported
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  • mt9p031 standard not supported

    mt9p031 standard not supported

    This question is not answered
    kailash negi
    Posted by kailash negi
    on Feb 29 2012 06:58 AM
    Intellectual710 points

    hi

    using dmai loopback example in dm365 foe camera input ie MT9P031 camera

     if (attrs->videoInput == Capture_Input_CAMERA) {
            ctrl.id = V4L2_CID_EXPOSURE;
            /* Set flicker setting to 60 Hz for camera for better picture */
            if (std == V4L2_STD_720P_30
                || std == V4L2_STD_720P_50
                || std == V4L2_STD_720P_60) {
                ctrl.value = 0x2F2;
            }
            else if (std == V4L2_STD_1080P_30
                || std == V4L2_STD_1080P_50
                || std == V4L2_STD_1080P_60
                || std == V4L2_STD_1080I_30
                || std == V4L2_STD_1080I_50
                || std == V4L2_STD_1080I_60) {
                ctrl.value = 0x456;
            }
            else {
                ctrl.value = 0x5F4;
            }

    (it gives ctrl.value = 0x5F4)

    if(ioctl(fd, VIDIOC_S_STD, &std) == -1) {
            Dmai_err2("VIDIOC_S_STD failed on %s (%s)\n",
                      attrs->captureDevice, strerror(errno));
            return Dmai_EFAIL;
        }

    it fails here

    and error videostandard not supported

    wht is probable answer

    please help

    i ve tried to give standard in boar_dm365.c file

    #define V4L2_STD_MT9P031_STD_ALL (V4L2_STD_525_60\
        |V4L2_STD_625_50|V4L2_STD_525P_60\
         |V4L2_STD_625P_50|V4L2_STD_720P_30\
         |V4L2_STD_720P_50|V4L2_STD_720P_60\
         |V4L2_STD_1080I_30|V4L2_STD_1080I_50\
        |V4L2_STD_1080I_60|V4L2_STD_1080P_30\
        |V4L2_STD_1080P_50|V4L2_STD_1080P_60)
    //end
    /* Input available at the mt9p031 */
    static struct v4l2_input mt9p031_inputs[] = {
        {
            .index = 0,
            .name = "Camera",
            .type = V4L2_INPUT_TYPE_CAMERA,
            .std  = V4L2_STD_MT9P031_STD_ALL,
        }
    };

    but results are same

    thanxx

    kailash

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    • Matthew Schuckmann
      Posted by Matthew Schuckmann
      on Apr 12 2012 18:50 PM
      Intellectual270 points

      Hi did you find a solution to your problem, I'm seeing the same thing. 

      Thanks,

      Matt S. 

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    • kailash negi
      Posted by kailash negi
      on Jun 11 2012 00:06 AM
      Intellectual710 points

      hi

      Mathew the prob is not yet solved fully

      but u can try this and try to run the demo;

      go to Capture.c in ti_dsdk4........

      there is detect standard there is ioctl call for standard where we are getting the print f "standard not supported" comment

      that ioctl and proceed .

      tell me  what happens next

      kailash

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