ros2_control - rolling
Public Member Functions | Protected Attributes | List of all members
controller_interface::ControllerInterfaceBase Class Referenceabstract

#include <controller_interface_base.hpp>

Inheritance diagram for controller_interface::ControllerInterfaceBase:
Inheritance graph
[legend]
Collaboration diagram for controller_interface::ControllerInterfaceBase:
Collaboration graph
[legend]

Public Member Functions

virtual CONTROLLER_INTERFACE_PUBLIC InterfaceConfiguration command_interface_configuration () const =0
 Get configuration for controller's required command interfaces. More...
 
virtual CONTROLLER_INTERFACE_PUBLIC InterfaceConfiguration state_interface_configuration () const =0
 Get configuration for controller's required state interfaces. More...
 
virtual CONTROLLER_INTERFACE_PUBLIC void assign_interfaces (std::vector< hardware_interface::LoanedCommandInterface > &&command_interfaces, std::vector< hardware_interface::LoanedStateInterface > &&state_interfaces)
 Method that assigns the Loaned interfaces to the controller. More...
 
virtual CONTROLLER_INTERFACE_PUBLIC void release_interfaces ()
 Method that releases the Loaned interfaces from the controller. More...
 
CONTROLLER_INTERFACE_PUBLIC return_type init (const std::string &controller_name, const std::string &urdf, unsigned int cm_update_rate, const std::string &node_namespace, const rclcpp::NodeOptions &node_options)
 
CONTROLLER_INTERFACE_PUBLIC const rclcpp_lifecycle::State & configure ()
 Custom configure method to read additional parameters for controller-nodes.
 
virtual CONTROLLER_INTERFACE_PUBLIC CallbackReturn on_init ()=0
 Extending interface with initialization method which is individual for each controller.
 
virtual CONTROLLER_INTERFACE_PUBLIC return_type update (const rclcpp::Time &time, const rclcpp::Duration &period)=0
 
CONTROLLER_INTERFACE_PUBLIC std::shared_ptr< rclcpp_lifecycle::LifecycleNode > get_node ()
 
CONTROLLER_INTERFACE_PUBLIC std::shared_ptr< const rclcpp_lifecycle::LifecycleNode > get_node () const
 
CONTROLLER_INTERFACE_PUBLIC const rclcpp_lifecycle::State & get_lifecycle_state () const
 
CONTROLLER_INTERFACE_PUBLIC unsigned int get_update_rate () const
 
CONTROLLER_INTERFACE_PUBLIC bool is_async () const
 
CONTROLLER_INTERFACE_PUBLIC const std::string & get_robot_description () const
 
virtual CONTROLLER_INTERFACE_PUBLIC rclcpp::NodeOptions define_custom_node_options () const
 
template<typename ParameterT >
auto auto_declare (const std::string &name, const ParameterT &default_value)
 Declare and initialize a parameter with a type. More...
 
virtual CONTROLLER_INTERFACE_PUBLIC bool is_chainable () const =0
 Get information if a controller is chainable. More...
 
virtual CONTROLLER_INTERFACE_PUBLIC std::vector< hardware_interface::CommandInterfaceexport_reference_interfaces ()=0
 
virtual CONTROLLER_INTERFACE_PUBLIC std::vector< hardware_interface::StateInterfaceexport_state_interfaces ()=0
 
virtual CONTROLLER_INTERFACE_PUBLIC bool set_chained_mode (bool chained_mode)=0
 
virtual CONTROLLER_INTERFACE_PUBLIC bool is_in_chained_mode () const =0
 Get information if a controller is currently in chained mode. More...
 

Protected Attributes

std::vector< hardware_interface::LoanedCommandInterfacecommand_interfaces_
 
std::vector< hardware_interface::LoanedStateInterfacestate_interfaces_
 

Detailed Description

Base interface class for an controller. The interface may not be used to implement a controller. The class provides definitions for ControllerInterface and ChainableControllerInterface that should be implemented and extended for a specific controller.

Member Function Documentation

◆ assign_interfaces()

void controller_interface::ControllerInterfaceBase::assign_interfaces ( std::vector< hardware_interface::LoanedCommandInterface > &&  command_interfaces,
std::vector< hardware_interface::LoanedStateInterface > &&  state_interfaces 
)
virtual

Method that assigns the Loaned interfaces to the controller.

Method used by the controller_manager to assign the interfaces to the controller.

Note
When this method is overridden, the user has to also implement the release_interfaces method by overriding it to release the interfaces.
Parameters
[in]command_interfacesvector of command interfaces to be assigned to the controller.
[in]state_interfacesvector of state interfaces to be assigned to the controller.

◆ auto_declare()

template<typename ParameterT >
auto controller_interface::ControllerInterfaceBase::auto_declare ( const std::string &  name,
const ParameterT &  default_value 
)
inline

Declare and initialize a parameter with a type.

Wrapper function for templated node's declare_parameter() which checks if parameter is already declared. For use in all components that inherit from ControllerInterfaceBase

◆ command_interface_configuration()

virtual CONTROLLER_INTERFACE_PUBLIC InterfaceConfiguration controller_interface::ControllerInterfaceBase::command_interface_configuration ( ) const
pure virtual

Get configuration for controller's required command interfaces.

Method used by the controller_manager to get the set of command interfaces used by the controller. Each controller can use individual method to determine interface names that in simples case have the following format: <joint>/<interface>. The method is called only in inactive or active state, i.e., on_configure has to be called first. The configuration is used to check if controller can be activated and to claim interfaces from hardware. The claimed interfaces are populated in the command_interfaces_ member.

Returns
configuration of command interfaces.

Implemented in tricycle_controller::TricycleController, steering_controllers_library::SteeringControllersLibrary, range_sensor_broadcaster::RangeSensorBroadcaster, pid_controller::PidController, parallel_gripper_action_controller::GripperActionController, joint_trajectory_controller::JointTrajectoryController, joint_state_broadcaster::JointStateBroadcaster, imu_sensor_broadcaster::IMUSensorBroadcaster, gripper_action_controller::GripperActionController< HardwareInterface >, forward_command_controller::ForwardControllersBase, force_torque_sensor_broadcaster::ForceTorqueSensorBroadcaster, diff_drive_controller::DiffDriveController, admittance_controller::AdmittanceController, ros2_control_demo_example_7::RobotController, passthrough_controller::PassthroughController, and ros2_control_demo_example_10::GPIOController.

◆ define_custom_node_options()

virtual CONTROLLER_INTERFACE_PUBLIC rclcpp::NodeOptions controller_interface::ControllerInterfaceBase::define_custom_node_options ( ) const
inlinevirtual

Method used by the controller_manager for base NodeOptions to instantiate the Lifecycle node of the controller upon loading the controller.

Note
The controller_manager will modify these NodeOptions in case a params file is passed by the spawner to load the controller parameters or when controllers are loaded in simulation (see ros2_control#1311, ros2_controllers#698 , ros2_controllers#795,ros2_controllers#966 for more details)
Returns
NodeOptions required for the configuration of the controller lifecycle node

◆ export_reference_interfaces()

virtual CONTROLLER_INTERFACE_PUBLIC std::vector<hardware_interface::CommandInterface> controller_interface::ControllerInterfaceBase::export_reference_interfaces ( )
pure virtual

Export interfaces for a chainable controller that can be used as command interface of other controllers.

Returns
list of command interfaces for preceding controllers.

Implemented in controller_interface::ControllerInterface, and controller_interface::ChainableControllerInterface.

◆ export_state_interfaces()

virtual CONTROLLER_INTERFACE_PUBLIC std::vector<hardware_interface::StateInterface> controller_interface::ControllerInterfaceBase::export_state_interfaces ( )
pure virtual

Export interfaces for a chainable controller that can be used as state interface by other controllers.

Returns
list of state interfaces for preceding controllers.

Implemented in controller_interface::ControllerInterface, and controller_interface::ChainableControllerInterface.

◆ is_chainable()

virtual CONTROLLER_INTERFACE_PUBLIC bool controller_interface::ControllerInterfaceBase::is_chainable ( ) const
pure virtual

Get information if a controller is chainable.

Get information if a controller is chainable.

Returns
true is controller is chainable and false if it is not.

Implemented in controller_interface::ControllerInterface, and controller_interface::ChainableControllerInterface.

◆ is_in_chained_mode()

virtual CONTROLLER_INTERFACE_PUBLIC bool controller_interface::ControllerInterfaceBase::is_in_chained_mode ( ) const
pure virtual

Get information if a controller is currently in chained mode.

Get information about controller if it is currently used in chained mode. In chained mode only internal interfaces are available and all subscribers are expected to be disabled. This prevents concurrent writing to controller's inputs from multiple sources.

Returns
true is controller is in chained mode and false if it is not.

Implemented in controller_interface::ControllerInterface, and controller_interface::ChainableControllerInterface.

◆ release_interfaces()

void controller_interface::ControllerInterfaceBase::release_interfaces ( )
virtual

Method that releases the Loaned interfaces from the controller.

Method used by the controller_manager to release the interfaces from the controller.

◆ set_chained_mode()

virtual CONTROLLER_INTERFACE_PUBLIC bool controller_interface::ControllerInterfaceBase::set_chained_mode ( bool  chained_mode)
pure virtual

Set chained mode of a chainable controller. This method triggers internal processes to switch a chainable controller to "chained" mode and vice-versa. Setting controller to "chained" mode usually involves the usage of the controller's reference interfaces by the other controllers

Returns
true if mode is switched successfully and false if not.

Implemented in controller_interface::ControllerInterface, and controller_interface::ChainableControllerInterface.

◆ state_interface_configuration()

virtual CONTROLLER_INTERFACE_PUBLIC InterfaceConfiguration controller_interface::ControllerInterfaceBase::state_interface_configuration ( ) const
pure virtual

Get configuration for controller's required state interfaces.

Method used by the controller_manager to get the set of state interface used by the controller. Each controller can use individual method to determine interface names that in simples case have the following format: <joint>/<interface>. The method is called only in inactive or active state, i.e., on_configure has to be called first. The configuration is used to check if controller can be activated and to claim interfaces from hardware. The claimed interfaces are populated in the state_interface_ member.

Returns
configuration of state interfaces.

Implemented in tricycle_controller::TricycleController, steering_controllers_library::SteeringControllersLibrary, range_sensor_broadcaster::RangeSensorBroadcaster, pid_controller::PidController, parallel_gripper_action_controller::GripperActionController, joint_trajectory_controller::JointTrajectoryController, joint_state_broadcaster::JointStateBroadcaster, imu_sensor_broadcaster::IMUSensorBroadcaster, gripper_action_controller::GripperActionController< HardwareInterface >, forward_command_controller::ForwardControllersBase, force_torque_sensor_broadcaster::ForceTorqueSensorBroadcaster, diff_drive_controller::DiffDriveController, admittance_controller::AdmittanceController, ros2_control_demo_example_7::RobotController, passthrough_controller::PassthroughController, and ros2_control_demo_example_10::GPIOController.

◆ update()

virtual CONTROLLER_INTERFACE_PUBLIC return_type controller_interface::ControllerInterfaceBase::update ( const rclcpp::Time &  time,
const rclcpp::Duration &  period 
)
pure virtual

The documentation for this class was generated from the following files: