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ur_moveit.launch.py
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ur_moveit.launch.py
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# Copyright (c) 2021 PickNik, Inc.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# * Neither the name of the {copyright_holder} nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# Author: Denis Stogl
import os
from launch_ros.actions import Node
from launch_ros.substitutions import FindPackageShare
from ur_moveit_config.launch_common import load_yaml
from launch import LaunchDescription
from launch.actions import DeclareLaunchArgument, OpaqueFunction
from launch.conditions import IfCondition
from launch.substitutions import Command, FindExecutable, LaunchConfiguration, PathJoinSubstitution
def launch_setup(context, *args, **kwargs):
# Initialize Arguments
ur_type = LaunchConfiguration("ur_type")
use_mock_hardware = LaunchConfiguration("use_mock_hardware")
safety_limits = LaunchConfiguration("safety_limits")
safety_pos_margin = LaunchConfiguration("safety_pos_margin")
safety_k_position = LaunchConfiguration("safety_k_position")
# General arguments
description_package = LaunchConfiguration("description_package")
description_file = LaunchConfiguration("description_file")
moveit_config_package = LaunchConfiguration("moveit_config_package")
moveit_joint_limits_file = LaunchConfiguration("moveit_joint_limits_file")
moveit_config_file = LaunchConfiguration("moveit_config_file")
warehouse_sqlite_path = LaunchConfiguration("warehouse_sqlite_path")
prefix = LaunchConfiguration("prefix")
use_sim_time = LaunchConfiguration("use_sim_time")
launch_rviz = LaunchConfiguration("launch_rviz")
launch_servo = LaunchConfiguration("launch_servo")
joint_limit_params = PathJoinSubstitution(
[FindPackageShare(description_package), "config", ur_type, "joint_limits.yaml"]
)
kinematics_params = PathJoinSubstitution(
[FindPackageShare(description_package), "config", ur_type, "default_kinematics.yaml"]
)
physical_params = PathJoinSubstitution(
[FindPackageShare(description_package), "config", ur_type, "physical_parameters.yaml"]
)
visual_params = PathJoinSubstitution(
[FindPackageShare(description_package), "config", ur_type, "visual_parameters.yaml"]
)
robot_description_content = Command(
[
PathJoinSubstitution([FindExecutable(name="xacro")]),
" ",
PathJoinSubstitution([FindPackageShare(description_package), "urdf", description_file]),
" ",
"robot_ip:=xxx.yyy.zzz.www",
" ",
"joint_limit_params:=",
joint_limit_params,
" ",
"kinematics_params:=",
kinematics_params,
" ",
"physical_params:=",
physical_params,
" ",
"visual_params:=",
visual_params,
" ",
"safety_limits:=",
safety_limits,
" ",
"safety_pos_margin:=",
safety_pos_margin,
" ",
"safety_k_position:=",
safety_k_position,
" ",
"name:=",
"ur",
" ",
"ur_type:=",
ur_type,
" ",
"script_filename:=ros_control.urscript",
" ",
"input_recipe_filename:=rtde_input_recipe.txt",
" ",
"output_recipe_filename:=rtde_output_recipe.txt",
" ",
"prefix:=",
prefix,
" ",
]
)
robot_description = {"robot_description": robot_description_content}
# MoveIt Configuration
robot_description_semantic_content = Command(
[
PathJoinSubstitution([FindExecutable(name="xacro")]),
" ",
PathJoinSubstitution(
[FindPackageShare(moveit_config_package), "srdf", moveit_config_file]
),
" ",
"name:=",
# Also ur_type parameter could be used but then the planning group names in yaml
# configs has to be updated!
"ur",
" ",
"prefix:=",
prefix,
" ",
]
)
robot_description_semantic = {"robot_description_semantic": robot_description_semantic_content}
robot_description_kinematics = PathJoinSubstitution(
[FindPackageShare(moveit_config_package), "config", "kinematics.yaml"]
)
robot_description_planning = {
"robot_description_planning": load_yaml(
str(moveit_config_package.perform(context)),
os.path.join("config", str(moveit_joint_limits_file.perform(context))),
)
}
# Planning Configuration
ompl_planning_pipeline_config = {
"move_group": {
"planning_plugin": "ompl_interface/OMPLPlanner",
"request_adapters": """default_planner_request_adapters/AddTimeOptimalParameterization default_planner_request_adapters/FixWorkspaceBounds default_planner_request_adapters/FixStartStateBounds default_planner_request_adapters/FixStartStateCollision default_planner_request_adapters/FixStartStatePathConstraints""",
"start_state_max_bounds_error": 0.1,
}
}
ompl_planning_yaml = load_yaml("ur_moveit_config", "config/ompl_planning.yaml")
ompl_planning_pipeline_config["move_group"].update(ompl_planning_yaml)
# Trajectory Execution Configuration
controllers_yaml = load_yaml("ur_moveit_config", "config/controllers.yaml")
# the scaled_joint_trajectory_controller does not work on mock hardware
change_controllers = context.perform_substitution(use_mock_hardware)
if change_controllers == "true":
controllers_yaml["scaled_joint_trajectory_controller"]["default"] = False
controllers_yaml["joint_trajectory_controller"]["default"] = True
moveit_controllers = {
"moveit_simple_controller_manager": controllers_yaml,
"moveit_controller_manager": "moveit_simple_controller_manager/MoveItSimpleControllerManager",
}
trajectory_execution = {
"moveit_manage_controllers": False,
"trajectory_execution.allowed_execution_duration_scaling": 1.2,
"trajectory_execution.allowed_goal_duration_margin": 0.5,
"trajectory_execution.allowed_start_tolerance": 0.01,
}
planning_scene_monitor_parameters = {
"publish_planning_scene": True,
"publish_geometry_updates": True,
"publish_state_updates": True,
"publish_transforms_updates": True,
}
warehouse_ros_config = {
"warehouse_plugin": "warehouse_ros_sqlite::DatabaseConnection",
"warehouse_host": warehouse_sqlite_path,
}
# Start the actual move_group node/action server
move_group_node = Node(
package="moveit_ros_move_group",
executable="move_group",
output="screen",
parameters=[
robot_description,
robot_description_semantic,
robot_description_kinematics,
robot_description_planning,
ompl_planning_pipeline_config,
trajectory_execution,
moveit_controllers,
planning_scene_monitor_parameters,
{"use_sim_time": use_sim_time},
warehouse_ros_config,
],
)
# rviz with moveit configuration
rviz_config_file = PathJoinSubstitution(
[FindPackageShare(moveit_config_package), "rviz", "view_robot.rviz"]
)
rviz_node = Node(
package="rviz2",
condition=IfCondition(launch_rviz),
executable="rviz2",
name="rviz2_moveit",
output="log",
arguments=["-d", rviz_config_file],
parameters=[
robot_description,
robot_description_semantic,
ompl_planning_pipeline_config,
robot_description_kinematics,
robot_description_planning,
warehouse_ros_config,
],
)
# Servo node for realtime control
servo_yaml = load_yaml("ur_moveit_config", "config/ur_servo.yaml")
servo_params = {"moveit_servo": servo_yaml}
servo_node = Node(
package="moveit_servo",
condition=IfCondition(launch_servo),
executable="servo_node_main",
parameters=[
servo_params,
robot_description,
robot_description_semantic,
],
output="screen",
)
nodes_to_start = [move_group_node, rviz_node, servo_node]
return nodes_to_start
def generate_launch_description():
declared_arguments = []
# UR specific arguments
declared_arguments.append(
DeclareLaunchArgument(
"ur_type",
description="Type/series of used UR robot.",
choices=["ur3", "ur3e", "ur5", "ur5e", "ur10", "ur10e", "ur16e"],
)
)
declared_arguments.append(
DeclareLaunchArgument(
"use_mock_hardware",
default_value="false",
description="Indicate whether robot is running with mock hardware mirroring command to its states.",
)
)
declared_arguments.append(
DeclareLaunchArgument(
"safety_limits",
default_value="true",
description="Enables the safety limits controller if true.",
)
)
declared_arguments.append(
DeclareLaunchArgument(
"safety_pos_margin",
default_value="0.15",
description="The margin to lower and upper limits in the safety controller.",
)
)
declared_arguments.append(
DeclareLaunchArgument(
"safety_k_position",
default_value="20",
description="k-position factor in the safety controller.",
)
)
# General arguments
declared_arguments.append(
DeclareLaunchArgument(
"description_package",
default_value="ur_description",
description="Description package with robot URDF/XACRO files. Usually the argument \
is not set, it enables use of a custom description.",
)
)
declared_arguments.append(
DeclareLaunchArgument(
"description_file",
default_value="ur.urdf.xacro",
description="URDF/XACRO description file with the robot.",
)
)
declared_arguments.append(
DeclareLaunchArgument(
"moveit_config_package",
default_value="ur_moveit_config",
description="MoveIt config package with robot SRDF/XACRO files. Usually the argument \
is not set, it enables use of a custom moveit config.",
)
)
declared_arguments.append(
DeclareLaunchArgument(
"moveit_config_file",
default_value="ur.srdf.xacro",
description="MoveIt SRDF/XACRO description file with the robot.",
)
)
declared_arguments.append(
DeclareLaunchArgument(
"moveit_joint_limits_file",
default_value="joint_limits.yaml",
description="MoveIt joint limits that augment or override the values from the URDF robot_description.",
)
)
declared_arguments.append(
DeclareLaunchArgument(
"warehouse_sqlite_path",
default_value=os.path.expanduser("~/.ros/warehouse_ros.sqlite"),
description="Path where the warehouse database should be stored",
)
)
declared_arguments.append(
DeclareLaunchArgument(
"use_sim_time",
default_value="false",
description="Make MoveIt to use simulation time. This is needed for the trajectory planing in simulation.",
)
)
declared_arguments.append(
DeclareLaunchArgument(
"prefix",
default_value='""',
description="Prefix of the joint names, useful for \
multi-robot setup. If changed than also joint names in the controllers' configuration \
have to be updated.",
)
)
declared_arguments.append(
DeclareLaunchArgument("launch_rviz", default_value="true", description="Launch RViz?")
)
declared_arguments.append(
DeclareLaunchArgument("launch_servo", default_value="true", description="Launch Servo?")
)
return LaunchDescription(declared_arguments + [OpaqueFunction(function=launch_setup)])