Camera Guide¶

Note

To enable camera support when building Yocto images see:

QS8M with Raspi camera: local.conf section in NXP Yocto BSP.
Basler cameras: Basler Camera in NXP Yocto BSP.

Camera Enablement¶

Module	Camera	Precompiled Image	Yocto Enablement
QS8M-MQ00	RaspberryPi Camera	n.a.	Raspi Camera
QSXM-MM60	Basler daA2500-60mci	qsxm-mm60-basler in Download Area	Basler Camera
QSXP-ML81	Basler daA3840-30mc	qsxp-ml81-basler in Download Area	Basler Camera

Camera DTB¶

When your Yocto build has finished you will get different dtbs in deploy directory.

The following table gives an overview.

Module	Camera Supported	.dtb Files
qs8m-mq00 on qsbase2	RaspberryPi Camera	imx8mm-qs8m-mq00-qsbase2-dsi83-cam.dtb imx8mm-qs8m-mq00-qsbase2-raspi-display-cam.dtb
qsxm-mm60 on qsbase3	Basler daA2500-60mci	imx8mm-qsxm-mm60-qsbase3-basler.dtb
qsxp-ml81 on qsbase3	Basler daA3840-30mc	imx8mp-qsxp-ml81-qsbase3-basler.dtb

Use the specific dtb file when booting Linux.

Note

You can change the baseboard variable in U-Boot to get the specific dtb loaded from eMMC.

EXAMPLE

setenv baseboard qsbase2-raspi-display-cam

Notice: 'fdt_file' changed from 'imx8mm-qs8m-mq00-qsbase2.dtb' to 'imx8mm-qs8m-mq00-qsbase2-raspi-display-cam.dtb'

Stream Camera¶

To stream a camera live video on your weston desktop follow the instructions written below.

Module

Camera Stream

qs8m-mq00

gst-launch-1.0 -v v4l2src ! "video/x-bayer,format=rggb,width=640,height=480,framerate=30/1" ! \
bayer2rgb ! videoconvert ! autovideosink sync=false

qsxm-mm60, qsxp-ml81

Start pylon viewer from serial Terminal:

export DISPLAY=:0; pylon

Enable the camera and click on the camera icon to stream a live video.

Live-stream the camera with gstreamer:

gst-launch-1.0 -v v4l2src device=/dev/video2 ! waylandsink

You can also record the camera stream using the VPU:

gst-launch-1.0 v4l2src device=/dev/video2 ! \
"video/x-raw, format=NV12, width=1920, height=1080, framerate=30/1" ! \
vpuenc_h264 ! mpegtsmux name=mux ! filesink location=test_1080.ts