Camera

The connection method between the bottom plate and the camera is shown
in the figure:


Note: The red and black lines on the camera are used as switching
filters.

Command switch filter

   # View SDK version
   cd path-to-sdk/
   realpath .repo/manifest.xml

If the SDK version obtained by the above command is
rv1126_rv1109_linux_release_20220324_v2.2.5b.xml version and the date
is 2022.03.24 or later, use the following command to perform IRCUT
(filter switching):

   # Close the filter
   v4l2-ctl -d /dev/v4l-subdev5 --set-ctrl 'band_stop_filter=0'

   # Open the filter
   v4l2-ctl -d /dev/v4l-subdev5 --set-ctrl 'band_stop_filter=1'

If the SDK version obtained by the above command is not
rv1126_rv1109_linux_release_20220324_v2.2.5b.xml version and the date
is 2022.03.24 or later, use the following command to perform IRCUT
(filter switching):

   # Close the filter
   v4l2-ctl -d /dev/v4l-subdev4 --set-ctrl 'band_stop_filter=0'

   # Open the filter
   v4l2-ctl -d /dev/v4l-subdev4 --set-ctrl 'band_stop_filter=1'

MIPI CSI

MIPI-CSI Camera requires purchase of adapter board

v4l2 interface to operate MIPI-CSI camera

   #If the probe is successful, there will be video and media devices in /dev/.
   #There may be multiple /dev/video devices in the system. You can find the registered video node of RKISP through /sys.
   #It corresponds to the rkispp_scale0 node, the following print is /dev/video19
   [root@RV1126_RV1109:/]# grep '' /sys/class/video4linux/video*/name
   /sys/class/video4linux/video0/name:stream_cif_mipi_id0
   /sys/class/video4linux/video1/name:stream_cif_mipi_id1
   /sys/class/video4linux/video10/name:rkisp_rawwr3
   /sys/class/video4linux/video11/name:rkisp_rawrd0_m
   /sys/class/video4linux/video12/name:rkisp_rawrd2_s
   /sys/class/video4linux/video13/name:rkisp_rawrd1_l
   /sys/class/video4linux/video14/name:rkisp-statistics
   /sys/class/video4linux/video15/name:rkisp-input-params
   /sys/class/video4linux/video16/name:rkisp-mipi-luma
   /sys/class/video4linux/video17/name:rkispp_input_image
   /sys/class/video4linux/video18/name:rkispp_m_bypass
   /sys/class/video4linux/video19/name:rkispp_scale0
   /sys/class/video4linux/video2/name:stream_cif_mipi_id2
   /sys/class/video4linux/video20/name:rkispp_scale1
   /sys/class/video4linux/video21/name:rkispp_scale2
   /sys/class/video4linux/video22/name:rkispp_iqtool
   /sys/class/video4linux/video23/name:rkispp_input_params
   /sys/class/video4linux/video24/name:rkispp-stats
   /sys/class/video4linux/video3/name:stream_cif_mipi_id3
   /sys/class/video4linux/video4/name:rkcif-mipi-luma
   /sys/class/video4linux/video5/name:rkisp_mainpath
   /sys/class/video4linux/video6/name:rkisp_selfpath
   /sys/class/video4linux/video7/name:rkisp_rawwr0
   /sys/class/video4linux/video8/name:rkisp_rawwr1
   /sys/class/video4linux/video9/name:rkisp_rawwr2

   #v4l2-ctl grabs a frame and saves it in /tmp/cif.out
   # /dev/video19 is not fixed, it needs to be configured according to the above matching to get the corresponding node
   #You need to close the default camera application before grabbing pictures
   /oem/RkLunch-stop.sh
   /oem/usr/bin/dbserver &
   /usr/bin/ispserver &

   #After opening dbserver and ispserver, you can take a screenshot
   v4l2-ctl -d /dev/video19 \
   --set-fmt-video=width=1920,height=1080,pixelformat=NV12 \
   --stream-mmap=3 \
   --stream-skip=3 \
   --stream-to=/tmp/cif.out \
   --stream-count=1 \
   --stream-poll

   #v4l2-ctl grabs 10 frames of continuous images as a video and saves it in /tmp/test.yuv
   v4l2-ctl -d /dev/video19  --try-fmt-video=width=1920,height=1080,pixelformat=NV12 --stream-mmap=3 --stream-to=/tmp/test.yuv --stream-count=10 --stream-poll

   #Linux PC uses ffplay to play captured videos
   ffplay -f rawvideo -video_size 1920x1080 -pix_fmt nv12 test.yuv

Access network code streams Access using a player that supports RTSP
or RTMP, for example (VLC player).

RTSP access address:

   rtsp://Device IP address/live/mainstream
   rtsp://Device IP address/live/substream
   rtsp://Device IP address/live/thirdstream

RTMP access address:

   rtmp://Device IP address:1935/live/substream

Example: VLC player previews an RTSP stream

   #Note: VLC player needs to be installed
   vlc rtsp://Device IP address/live/mainstream

Access device information via web pages Open a Web browser (Chrome is
recommended) to access the following address:

   http://Device IP address
   #Username and password are admin.

See "Rockchip_Instructions_Linux_Web_Configuration_CN.pdf" under SDK
directory "docs" for detailed instructions on the web side.