documentation:vision:realsense2-ros [robotwiki]

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====== Realsense2 + ROS ======

Minimal test setup in [[documentation:containers|ROS containers]]:

To allow hardware to work within containers you have to use the option ''use-real'' which will map ''/dev'' inside (for USB communication) and run docker in ''%%--%%priviledged'' mode which will allow the container to have the same priviledges as outside the container for interacting with hardware.

==== Inside the container ====
<cli>
# Install realsense drivers
# Get distribution environment variables
. /etc/lsb-release
export repo="https://librealsense.intel.com/Debian/apt-repo"
export repo_check="$repo $DISTRIB_CODENAME main"
export repo_add="$repo main"
if ! grep -q "^deb .*$repo_check" /etc/apt/sources.list /etc/apt/sources.list.d/*; then\
    sudo apt-key adv --keyserver keys.gnupg.net --recv-key F6E65AC044F831AC80A06380C8B3A55A6F3EFCDE
    sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-key F6E65AC044F831AC80A06380C8B3A55A6F3EFCDE
    sudo add-apt-repository "$repo_add" -u
else
    echo "Realsense repo exists already."
fi

sudo apt update
sudo apt install -y librealsense2-dkms librealsense2-utils librealsense2-dev ros-noetic-realsense2-camera
</cli>

To get all Robotlab pieces for vision there is a config:
<cli>
workspace init minimal_vision.rosinstall
cd ~/catkin_ws
catkin build
workspace shell
roslaunch vision realsense_d435.launch   # launches a node
</cli>

==== Known issues ====
If you get an error similar to this:
''failed to open usb interface: 0, error: RS2_USB_STATUS_ACCESS''

This is known to be fixable by a firmware update of the Realsense D435 camera.