From 6f4f5d637de51272a2bc9fd3a8db0a2755d763c6 Mon Sep 17 00:00:00 2001 From: Thomas Gubler Date: Thu, 29 Jan 2015 10:29:15 +0100 Subject: first version of position estimator dummy node --- .../position_estimator/position_estimator.cpp | 107 +++++++++++++++++++++ .../nodes/position_estimator/position_estimator.h | 62 ++++++++++++ 2 files changed, 169 insertions(+) create mode 100644 src/platforms/ros/nodes/position_estimator/position_estimator.cpp create mode 100644 src/platforms/ros/nodes/position_estimator/position_estimator.h (limited to 'src/platforms') diff --git a/src/platforms/ros/nodes/position_estimator/position_estimator.cpp b/src/platforms/ros/nodes/position_estimator/position_estimator.cpp new file mode 100644 index 000000000..231e9763a --- /dev/null +++ b/src/platforms/ros/nodes/position_estimator/position_estimator.cpp @@ -0,0 +1,107 @@ +/**************************************************************************** + * + * Copyright (c) 2014 PX4 Development Team. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * 3. Neither the name PX4 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 OWNER 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. + * + ****************************************************************************/ + +/** + * @file position_estimator.cpp + * + * @author Thomas Gubler + * @author Roman Bapst +*/ + +#include "position_estimator.h" + +#include +#include +#include +#include +#include +#include +#include + +PositionEstimator::PositionEstimator() : + _n(), + _sub_modelstates(_n.subscribe("/gazebo/model_states", 1, &PositionEstimator::model_states_callback, this)), + _vehicle_position_pub(_n.advertise("vehicle_local_position", 1)), + _startup_time(px4::get_time_micros()) +{ +} + +void PositionEstimator::model_states_callback(const gazebo_msgs::ModelStatesConstPtr &msg) +{ + //XXX: use a proper sensor topic + + px4::vehicle_local_position msg_v_l_pos; + + /* Fill px4 position topic with contents from modelstates topic */ + int index = 0; + //XXX: maybe a more clever approach would be to do this not on every loop, need to check if and when + //gazebo rearranges indexes. + for(std::vector::const_iterator it = msg->name.begin(); it != msg->name.end(); ++it) { + if (*it == "iris" || *it == "ardrone") { + index = it - msg->name.begin(); + break; + } + } + msg_v_l_pos.xy_valid = true; + msg_v_l_pos.z_valid = true; + msg_v_l_pos.v_xy_valid = true; + msg_v_l_pos.v_z_valid = true; + + msg_v_l_pos.x = msg->pose[index].position.x; + msg_v_l_pos.y = -msg->pose[index].position.y; + msg_v_l_pos.z = -msg->pose[index].position.z; + msg_v_l_pos.vx = msg->twist[index].linear.x; + msg_v_l_pos.vy = -msg->twist[index].linear.y; + msg_v_l_pos.vz = -msg->twist[index].linear.z; + + msg_v_l_pos.xy_global = true; + msg_v_l_pos.z_global = true; + msg_v_l_pos.ref_timestamp = _startup_time; + msg_v_l_pos.ref_lat = 47.378301; + msg_v_l_pos.ref_lon = 8.538777; + msg_v_l_pos.ref_alt = 1200.0f; + + + msg_v_l_pos.timestamp = px4::get_time_micros(); + _vehicle_position_pub.publish(msg_v_l_pos); +} + +int main(int argc, char **argv) +{ + ros::init(argc, argv, "position_estimator"); + PositionEstimator m; + + ros::spin(); + + return 0; +} diff --git a/src/platforms/ros/nodes/position_estimator/position_estimator.h b/src/platforms/ros/nodes/position_estimator/position_estimator.h new file mode 100644 index 000000000..40c4baa23 --- /dev/null +++ b/src/platforms/ros/nodes/position_estimator/position_estimator.h @@ -0,0 +1,62 @@ +/**************************************************************************** + * + * Copyright (c) 2014 PX4 Development Team. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * 3. Neither the name PX4 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 OWNER 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. + * + ****************************************************************************/ + +/** + * @file position_estimator.h + * Dummy position estimator that forwards attitude from gazebo to px4 topic + * + * @author Thomas Gubler +*/ + +#include "ros/ros.h" +#include +#include + +class PositionEstimator +{ +public: + PositionEstimator(); + + ~PositionEstimator() {} + +protected: + void model_states_callback(const gazebo_msgs::ModelStatesConstPtr &msg); + + ros::NodeHandle _n; + ros::Subscriber _sub_modelstates; + ros::Publisher _vehicle_position_pub; + + uint64_t _startup_time; + + +}; -- cgit v1.2.3