rrbot.hpp

// Copyright 2020 ros2_control Development Team
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
 
#ifndef ROS2_CONTROL_DEMO_EXAMPLE_17__RRBOT_HPP_
#define ROS2_CONTROL_DEMO_EXAMPLE_17__RRBOT_HPP_
 
#include <memory>
#include <string>
#include <vector>
 
#include "diagnostic_updater/diagnostic_updater.hpp"
#include "hardware_interface/handle.hpp"
#include "hardware_interface/hardware_info.hpp"
#include "hardware_interface/system_interface.hpp"
#include "hardware_interface/types/hardware_interface_return_values.hpp"
#include "rclcpp/macros.hpp"
#include "rclcpp/rclcpp.hpp"
#include "rclcpp_lifecycle/node_interfaces/lifecycle_node_interface.hpp"
#include "rclcpp_lifecycle/state.hpp"
#include "std_msgs/msg/string.hpp"
 
namespace ros2_control_demo_example_17
{
class RRBotSystemPositionOnlyHardware : public hardware_interface::SystemInterface
{
public:
  RCLCPP_SHARED_PTR_DEFINITIONS(RRBotSystemPositionOnlyHardware)
 
  hardware_interface::CallbackReturn on_init(
    const hardware_interface::HardwareComponentInterfaceParams & params) override;
 
  hardware_interface::CallbackReturn on_configure(
    const rclcpp_lifecycle::State & previous_state) override;
 
  hardware_interface::CallbackReturn on_activate(
    const rclcpp_lifecycle::State & previous_state) override;
 
  hardware_interface::CallbackReturn on_deactivate(
    const rclcpp_lifecycle::State & previous_state) override;
 
  hardware_interface::return_type read(
    const rclcpp::Time & time, const rclcpp::Duration & period) override;
 
  hardware_interface::return_type write(
    const rclcpp::Time & time, const rclcpp::Duration & period) override;
 
  hardware_interface::CallbackReturn init_hardware_status_message(
    control_msgs::msg::HardwareStatus & msg_template) override;
 
  hardware_interface::return_type update_hardware_status_message(
    control_msgs::msg::HardwareStatus & msg) override;
 
private:
  // Parameters for the RRBot simulation
  double hw_start_sec_;
  double hw_stop_sec_;
  double hw_slowdown_;
 
  std::shared_ptr<diagnostic_updater::Updater> updater_;
  void produce_diagnostics(diagnostic_updater::DiagnosticStatusWrapper & stat);
 
  rclcpp::Executor::WeakPtr executor_;
  rclcpp::Node::SharedPtr custom_status_node_;
  rclcpp::Publisher<std_msgs::msg::String>::SharedPtr custom_status_publisher_;
  rclcpp::TimerBase::SharedPtr custom_status_timer_;
};
 
}  // namespace ros2_control_demo_example_17
 
#endif  // ROS2_CONTROL_DEMO_EXAMPLE_17__RRBOT_HPP_