Delete 'src/mocap_path_follow.cpp'
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/**
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* @file path_follow.cpp
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* @brief Offboard path trajectory tracking
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*/
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#include <ros/ros.h>
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#include <sensor_msgs/NavSatFix.h>
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#include <oscillation_ctrl/RefSignal.h>
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#include <oscillation_ctrl/EulerAngles.h>
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#include <oscillation_ctrl/WaypointTrack.h>
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#include <geometry_msgs/PoseStamped.h>
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#include <geometry_msgs/Quaternion.h>
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#include <mavros_msgs/CommandBool.h>
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#include <mavros_msgs/SetMode.h>
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#include <mavros_msgs/State.h>
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#include <mavros_msgs/CommandTOL.h>
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#include <mavros_msgs/AttitudeTarget.h>
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#include <tf2/LinearMath/Quaternion.h>
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#include <tf2_geometry_msgs/tf2_geometry_msgs.h>
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#include <iostream>
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#include <cmath> // for std::abs
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/********* CALLBACK FUNCTIONS **********************/
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// Callback function which will save the current state of the autopilot.
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// Allows to check connection, arming, and Offboard tags*/
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mavros_msgs::State current_state;
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bool land = false;
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void state_cb(const mavros_msgs::State::ConstPtr& msg){
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current_state = *msg;
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}
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// Cb to determine attitude target
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mavros_msgs::AttitudeTarget att_targ;
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void att_targ_cb(const mavros_msgs::AttitudeTarget::ConstPtr& msg){
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att_targ = *msg;
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}
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// Cb to recieve pose information
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geometry_msgs::PoseStamped buff_pose;
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geometry_msgs::Quaternion q_init;
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geometry_msgs::PoseStamped mavPose;
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bool gps_read = false;
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double current_altitude;
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void mavPose_cb(const geometry_msgs::PoseStamped::ConstPtr& msg){
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mavPose = *msg;
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current_altitude = mavPose.pose.position.z;
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while(gps_read == false){
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q_init = mavPose.pose.orientation;
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if(q_init.x == 0.0 && q_init.w == 0.0){
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ROS_INFO("Waiting...");
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} else {
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buff_pose.pose.orientation.x = 0.0;
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buff_pose.pose.orientation.y = 0.0;
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buff_pose.pose.orientation.z = 0.0;
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buff_pose.pose.orientation.w = 1.0;
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gps_read = true;
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}
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}
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}
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int main(int argc, char **argv)
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{
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ros::init(argc, argv, "path_follow");
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ros::NodeHandle nh;
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/********************** SUBSCRIBERS **********************/
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// Get current state
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ros::Subscriber state_sub = nh.subscribe<mavros_msgs::State>
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("mavros/state", 10, state_cb);
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// Get attitude target from klausen control
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ros::Subscriber att_target_sub = nh.subscribe<mavros_msgs::AttitudeTarget>
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("command/att_target",10,att_targ_cb);
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// Pose subscriber
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ros::Subscriber mavPose_sub = nh.subscribe<geometry_msgs::PoseStamped>
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("mavros/local_position/pose",10,mavPose_cb);
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/********************** PUBLISHERS **********************/
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// Initiate publisher to publish commanded local position
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ros::Publisher local_pos_pub = nh.advertise<geometry_msgs::PoseStamped>
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("mavros/setpoint_position/local", 10);
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// Publish attitude and thrust commands
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ros::Publisher att_targ_pub = nh.advertise<mavros_msgs::AttitudeTarget>
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("mavros/setpoint_raw/attitude",10);
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// Service Clients
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ros::ServiceClient arming_client = nh.serviceClient<mavros_msgs::CommandBool>
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("mavros/cmd/arming");
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ros::ServiceClient set_mode_client = nh.serviceClient<mavros_msgs::SetMode>
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("mavros/set_mode");
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ros::ServiceClient takeoff_cl = nh.serviceClient<mavros_msgs::CommandTOL>
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("mavros/cmd/takeoff");
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ros::ServiceClient waypoint_cl = nh.serviceClient<oscillation_ctrl::WaypointTrack>
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("status/waypoint_tracker");
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//the setpoint publishing rate MUST be faster than 2Hz... PX4 timeout = 500 ms
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ros::Rate rate_wait(20.0);
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// wait for FCU connection
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while(ros::ok() && !current_state.connected){
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ros::spinOnce();
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ROS_INFO("Waiting for FCU connection");
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rate_wait.sleep();
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}
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if (current_state.connected){
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ROS_INFO("Connected to FCU");
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} else {
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ROS_INFO("Never Connected");
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}
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/*********** Initiate variables ************************/
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//the setpoint publishing rate MUST be faster than 2Hz... PX4 timeout = 500 ms
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ros::Rate rate_pub(25.0);
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// Desired mode is offboard
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mavros_msgs::SetMode offb_set_mode;
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offb_set_mode.request.custom_mode = "OFFBOARD";
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// Arm UAV
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mavros_msgs::CommandBool arm_cmd;
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arm_cmd.request.value = true;
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// Take off command
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bool takeoff = false, att_cmds = false;
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bool oscillation_damp = true;
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// Keep track of time since requests
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ros::Time tkoff_req = ros::Time::now();
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ros::Time last_request = ros::Time::now();
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//send a few setpoints before starting
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for(int i = 100; ros::ok() && i > 0; --i){
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local_pos_pub.publish(buff_pose);
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ros::spinOnce();
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ROS_INFO("Publishing position setpoints");
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rate_wait.sleep();
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}
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// Retrieve desired waypoints
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oscillation_ctrl::WaypointTrack wpoint_srv;
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wpoint_srv.request.query = false;
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if (waypoint_cl.call(wpoint_srv)){
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ROS_INFO("Waypoints received");
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// populate desired waypoints - this is only for original hover as
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// a change of waypoints is handled by ref_signal.py
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buff_pose.pose.position.x = wpoint_srv.response.xd.x;
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buff_pose.pose.position.y = wpoint_srv.response.xd.y;
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buff_pose.pose.position.z = wpoint_srv.response.xd.z;
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} else {
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ROS_INFO("NO waypoints received");
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}
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double alt_des = wpoint_srv.response.xd.z; // Desired height
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while(ros::ok()){
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if(current_state.mode == "AUTO.LAND"){
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land = true;
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while(land == true){
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ROS_INFO("Des Altitude: LANDING");
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}
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} else {
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if(current_state.mode != "OFFBOARD" && (ros::Time::now() - last_request > ros::Duration(5.0))){
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if( set_mode_client.call(offb_set_mode) && offb_set_mode.response.mode_sent){
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} else {
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ROS_INFO("Could not enter offboard mode");
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}
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//last_request = ros::Time::now();
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} else {
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if( !current_state.armed && (ros::Time::now() - last_request > ros::Duration(8.0))){
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if( arming_client.call(arm_cmd) && arm_cmd.response.success){
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ROS_INFO("Vehicle armed");
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}
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last_request = ros::Time::now();
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}
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}
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if(current_state.mode == "OFFBOARD" && current_state.armed){
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ROS_INFO_ONCE("Spiri is taking off");
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if(!takeoff){
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tkoff_req = ros::Time::now();
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takeoff = true;
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}
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}
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// Check if we want to use oscillation controller
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//if (ros::param::get("/use_ctrl", oscillation_damp) == true){
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if (ros::param::has("/status/use_ctrl")){
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ros::param::get("/status/use_ctrl", oscillation_damp);
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if(oscillation_damp){
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ROS_INFO("USING ATTITUDE CTRL");
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att_targ.header.stamp = ros::Time::now();
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att_targ_pub.publish(att_targ);
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} else {
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// Check if waypoints have changed
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if (waypoint_cl.call(wpoint_srv))
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{
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// populate desired waypoints
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buff_pose.pose.position.x = wpoint_srv.response.xd.x;
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buff_pose.pose.position.y = wpoint_srv.response.xd.y;
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buff_pose.pose.position.z = wpoint_srv.response.xd.z;
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}
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local_pos_pub.publish(buff_pose);
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ROS_INFO("USING POSITION CTRL");
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}
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}
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ROS_INFO("Des Altitude: %.2f", alt_des);
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ROS_INFO("Cur Altitude: %.2f", current_altitude);
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ROS_INFO("---------------------------");
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ros::spinOnce();
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rate_pub.sleep();
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}
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}
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return 0;
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}
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