Inheritance diagram for diff_drive_controller::DiffDriveController:

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Collaboration diagram for diff_drive_controller::DiffDriveController:

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Classes
struct	WheelHandle

Public Member Functions
DIFF_DRIVE_CONTROLLER_PUBLIC controller_interface::InterfaceConfiguration	command_interface_configuration () const override
	Get configuration for controller's required command interfaces.

DIFF_DRIVE_CONTROLLER_PUBLIC controller_interface::InterfaceConfiguration	state_interface_configuration () const override
	Get configuration for controller's required state interfaces.

DIFF_DRIVE_CONTROLLER_PUBLIC controller_interface::return_type	update (const rclcpp::Time &time, const rclcpp::Duration &period) override

DIFF_DRIVE_CONTROLLER_PUBLIC controller_interface::CallbackReturn	on_init () override
	Extending interface with initialization method which is individual for each controller.

DIFF_DRIVE_CONTROLLER_PUBLIC controller_interface::CallbackReturn	on_configure (const rclcpp_lifecycle::State &previous_state) override

DIFF_DRIVE_CONTROLLER_PUBLIC controller_interface::CallbackReturn	on_activate (const rclcpp_lifecycle::State &previous_state) override

DIFF_DRIVE_CONTROLLER_PUBLIC controller_interface::CallbackReturn	on_deactivate (const rclcpp_lifecycle::State &previous_state) override

DIFF_DRIVE_CONTROLLER_PUBLIC controller_interface::CallbackReturn	on_cleanup (const rclcpp_lifecycle::State &previous_state) override

DIFF_DRIVE_CONTROLLER_PUBLIC controller_interface::CallbackReturn	on_error (const rclcpp_lifecycle::State &previous_state) override

Public Member Functions inherited from controller_interface::ControllerInterface
CONTROLLER_INTERFACE_PUBLIC bool	is_chainable () const final

CONTROLLER_INTERFACE_PUBLIC std::vector< hardware_interface::CommandInterface >	export_reference_interfaces () final

CONTROLLER_INTERFACE_PUBLIC bool	set_chained_mode (bool chained_mode) final

CONTROLLER_INTERFACE_PUBLIC bool	is_in_chained_mode () const final

Public Member Functions inherited from controller_interface::ControllerInterfaceBase
CONTROLLER_INTERFACE_PUBLIC void	assign_interfaces (std::vector< hardware_interface::LoanedCommandInterface > &&command_interfaces, std::vector< hardware_interface::LoanedStateInterface > &&state_interfaces)

CONTROLLER_INTERFACE_PUBLIC void	release_interfaces ()

virtual CONTROLLER_INTERFACE_PUBLIC return_type	init (const std::string &controller_name, const std::string &namespace_="", const rclcpp::NodeOptions &node_options=rclcpp::NodeOptions() .allow_undeclared_parameters(true) .automatically_declare_parameters_from_overrides(true))

CONTROLLER_INTERFACE_PUBLIC const rclcpp_lifecycle::State &	configure ()
	Custom configure method to read additional parameters for controller-nodes.

CONTROLLER_INTERFACE_PUBLIC std::shared_ptr< rclcpp_lifecycle::LifecycleNode >	get_node ()

CONTROLLER_INTERFACE_PUBLIC std::shared_ptr< rclcpp_lifecycle::LifecycleNode >	get_node () const

CONTROLLER_INTERFACE_PUBLIC const rclcpp_lifecycle::State &	get_state () const

CONTROLLER_INTERFACE_PUBLIC unsigned int	get_update_rate () const

template<typename ParameterT >
auto	auto_declare (const std::string &name, const ParameterT &default_value)
	Declare and initialize a parameter with a type.

Protected Member Functions
const char *	feedback_type () const

controller_interface::CallbackReturn	configure_side (const std::string &side, const std::vector< std::string > &wheel_names, std::vector< WheelHandle > &registered_handles)

bool	reset ()

void	halt ()

Protected Attributes
std::vector< WheelHandle >	registered_left_wheel_handles_

std::vector< WheelHandle >	registered_right_wheel_handles_

std::shared_ptr< ParamListener >	param_listener_

Params	params_

Odometry	odometry_

std::chrono::milliseconds	cmd_vel_timeout_ {500}

std::shared_ptr< rclcpp::Publisher< nav_msgs::msg::Odometry > >	odometry_publisher_ = nullptr

std::shared_ptr< realtime_tools::RealtimePublisher< nav_msgs::msg::Odometry > >	realtime_odometry_publisher_ = nullptr

std::shared_ptr< rclcpp::Publisher< tf2_msgs::msg::TFMessage > >	odometry_transform_publisher_

std::shared_ptr< realtime_tools::RealtimePublisher< tf2_msgs::msg::TFMessage > >	realtime_odometry_transform_publisher_ = nullptr

bool	subscriber_is_active_ = false

rclcpp::Subscription< Twist >::SharedPtr	velocity_command_subscriber_ = nullptr

rclcpp::Subscription< geometry_msgs::msg::Twist >::SharedPtr	velocity_command_unstamped_subscriber_ = nullptr

realtime_tools::RealtimeBox< std::shared_ptr< Twist > >	received_velocity_msg_ptr_ {nullptr}

std::queue< Twist >	previous_commands_

SpeedLimiter	limiter_linear_

SpeedLimiter	limiter_angular_

bool	publish_limited_velocity_ = false

std::shared_ptr< rclcpp::Publisher< Twist > >	limited_velocity_publisher_ = nullptr

std::shared_ptr< realtime_tools::RealtimePublisher< Twist > >	realtime_limited_velocity_publisher_

rclcpp::Time	previous_update_timestamp_ {0}

double	publish_rate_ = 50.0

rclcpp::Duration	publish_period_ = rclcpp::Duration::from_nanoseconds(0)

rclcpp::Time	previous_publish_timestamp_ {0, 0, RCL_CLOCK_UNINITIALIZED}

bool	is_halted = false

bool	use_stamped_vel_ = true

Protected Attributes inherited from controller_interface::ControllerInterfaceBase
std::vector< hardware_interface::LoanedCommandInterface >	command_interfaces_

std::vector< hardware_interface::LoanedStateInterface >	state_interfaces_

unsigned int	update_rate_ = 0

Member Function Documentation

◆ command_interface_configuration()

InterfaceConfiguration diff_drive_controller::DiffDriveController::command_interface_configuration ( ) const

overridevirtual

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.

Implements controller_interface::ControllerInterfaceBase.

◆ on_init()

controller_interface::CallbackReturn diff_drive_controller::DiffDriveController::on_init ( )

overridevirtual

Extending interface with initialization method which is individual for each controller.

Implements controller_interface::ControllerInterfaceBase.

◆ state_interface_configuration()

InterfaceConfiguration diff_drive_controller::DiffDriveController::state_interface_configuration ( ) const

overridevirtual

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.

Implements controller_interface::ControllerInterfaceBase.

◆ update()

controller_interface::return_type diff_drive_controller::DiffDriveController::update	(	const rclcpp::Time &	time,
		const rclcpp::Duration &	period
	)

overridevirtual

Control step update. Command interfaces are updated based on on reference inputs and current states. The method called in the (real-time) control loop.

Parameters

[in]	time	The time at the start of this control loop iteration
[in]	period	The measured time taken by the last control loop iteration

Returns: return_type::OK if update is successfully, otherwise return_type::ERROR.

Implements controller_interface::ControllerInterfaceBase.

Member Data Documentation

◆ odometry_transform_publisher_

std::shared_ptr<rclcpp::Publisher<tf2_msgs::msg::TFMessage> > diff_drive_controller::DiffDriveController::odometry_transform_publisher_

protected

Initial value:

=

nullptr

◆ realtime_limited_velocity_publisher_

std::shared_ptr<realtime_tools::RealtimePublisher<Twist> > diff_drive_controller::DiffDriveController::realtime_limited_velocity_publisher_

protected

Initial value:

=

nullptr

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

ros2_controllers/diff_drive_controller/include/diff_drive_controller/diff_drive_controller.hpp
ros2_controllers/diff_drive_controller/src/diff_drive_controller.cpp

Classes

Public Member Functions

Protected Member Functions

Protected Attributes

Member Function Documentation

◆ command_interface_configuration()

◆ on_init()

◆ state_interface_configuration()

◆ update()

Member Data Documentation

◆ odometry_transform_publisher_

◆ realtime_limited_velocity_publisher_