About preview function in i.MX6SL.

[keitanagashima]

Dear All,

Hello. I tested the preview function on MCIMX6SLEVK.

But, the preview didn't function.

Could you tell me the how to preview on MCIMX6SLEVK?

[Board] : MCIMX6SLEVK (LCD: MCIMX28LCD)

[Camera] : OV5642 module

[Image] : L3.10.53_1.0.0 (PreBuild Image)

[gst-launch command line]

$ modprobe ov5642_camera

$ modprobe mxc_v4l2_capture

$ gst-launch-1.0 imxv4l2src device=/dev/video0 ! 'video/x-raw,format=(string)UYVY,width=640,height=480,framerate=(fraction)30/1' ! imxv4l2sink

[Error message]

Can't get caps from capture device, use the default setting.

Perhaps haven't capture device.

====== IMXV4L2SRC: 4.0.2 build on Jan  5 2015 13:31:02. ======

set color key:00010203

====== IMXV4L2SINK: 4.0.2 build on Jan  5 2015 13:31:02. ======

WARNING: erroneous pipeline: could not link imxv4l2src0 to imxv4l2sink0

Best Regards,

Keita

[norishinozaki]

Hi Qiang,

I tried to run mx6s_v4l2_capture.out, but I can't find csi_v4l2_capture.ko in my sdcard.

I configured exactly as you showed us in the last mail.

Here is the all media modules created by bitbake linux-imx -c compile -f && bitbake linux-imx -c deploy.

./media/platform/mxc/capture/ov5640_camera_mipi.ko

./media/platform/mxc/capture/mxc_v4l2_capture.ko

./media/platform/mxc/capture/v4l2-int-device.ko

./media/platform/mxc/capture/ov5640_camera_int.ko

./media/platform/mxc/capture/ipu_fg_overlay_sdc.ko

./media/platform/mxc/capture/adv7180_tvin.ko

./media/platform/mxc/capture/ipu_csi_enc.ko

./media/platform/mxc/capture/ipu_bg_overlay_sdc.ko

./media/platform/mxc/capture/ipu_still.ko

./media/platform/mxc/capture/ipu_prp_enc.ko

./media/platform/mxc/capture/ov5642_camera.ko

./media/platform/mxc/subdev/ov5640_camera.ko

./media/platform/mxc/subdev/mx6s_capture.ko

./media/platform/mxc/subdev/mxc_vadc.ko

./media/platform/mxc/subdev/ov5642_camera.ko

./media/usb/uvc/uvcvideo.ko

./media/usb/gspca/gspca_main.ko

./media/v4l2-core/videobuf2-vmalloc.ko

Do I miss other configurations in kernel?

Attached is my .config and the captures.

Best regards,

Nori Shinozaki

[qiang_li-mpu_se]

Since you had built in the driver, just run the test command directly: /unit_tests/mx6s_v4l2_capture.out -m 0 -d /dev/video0

The csi_v4l2_capture.ko was replaced by mx6s_capture.ko in 3.14.28 kernel.

[norishinozaki]

Hello Qiang,

Confirmed working finally.

I didn't need any modules in this configuration.

Now how can I run it with gstreamer?

Customers need it with gstreamer.

Thank you!

Nori Shinozaki

[qiang_li-mpu_se]

When the camera driver is built in kernel, it is /dev/video0 and the v4l2 output device is the /dev/video1, so the gstreamer test command is:

     gst-launch-1.0 imxv4l2src device=/dev/video0 ! imxv4l2sink device=/dev/video1

For default BSP, it will build camera driver as modules, so v4l2 output device is the /dev/video0, and the camera is /dev/video1, so the test commands are:

$ insmod mx6s_capture.ko

$ insmod ov5642_camera.ko

$ gst-launch-1.0 imxv4l2src device=/dev/video1 ! imxv4l2sink device=/dev/video0

[karina_valencia]

robby​  please continue with the follow up,

[robby]

Hi Karina,

We are now busy with NPI projects and have no resource to support this. Could you please ask AE to support this?

[karina_valencia]

Qiang_FSL​ are you able to continue with the follow up here?

[keitanagashima]

Dear Yuri,

Hello. I added the "csi" parameter in mmcargs.

But, the OV5642 wasn't recognized by i.MX6.

I think that .dtb (.dts) is wrong in L3.14.28 for i.MX6SLEVK.

Please tell me the how to operate the OV5642 in L3.14.28.

We must resolve the issue asap.

Best Regards,

Keita

[Yuri]

Hi,

I forwarded request to the team.

About preview function in i.MX6SL EVK under L3.14.28_1.0.0

Regards,

Yuri

[keitanagashima]

Hi Yuri,

I tested qt5 image.

My build image and pre-build image didn't operate correctly.

Best Regards,

Keita

[keitanagashima]

Dear Yuri,

Hello. Thank you for your advice.

I replace the dtb file and i.MX6SL preview was success!

Best Regards,

Keita