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Cannot connect mavros to gazebo [closed]

asked 2017-06-21 09:28:21 -0500

Maureen gravatar image

updated 2017-06-21 11:09:57 -0500

I'm trying to launch a drone in gazebo, arm it and make it takeoff. So far I'm failing.

This is what happens when i do roslaunch drone_gazebo drone_world.launch

xacro: Traditional processing is deprecated. Switch to --inorder processing!
To check for compatibility of your document, use option --check-order.
For more infos, see http://wiki.ros.org/xacro#Processing_Order
xacro.py is deprecated; please use xacro instead
started roslaunch server http://ECPC:45272/

SUMMARY
========

CLEAR PARAMETERS
 * /mavros/

PARAMETERS
 * /mavros/cmd/use_comp_id_system_control: False
 * /mavros/conn/heartbeat_rate: 1.0
 * /mavros/conn/system_time_rate: 1.0
 * /mavros/conn/timeout: 10.0
 * /mavros/conn/timesync_rate: 10.0
 * /mavros/distance_sensor/hrlv_ez4_pub/field_of_view: 0.0
 * /mavros/distance_sensor/hrlv_ez4_pub/frame_id: hrlv_ez4_sonar
 * /mavros/distance_sensor/hrlv_ez4_pub/id: 0
 * /mavros/distance_sensor/hrlv_ez4_pub/orientation: ROLL_180
 * /mavros/distance_sensor/hrlv_ez4_pub/send_tf: True
 * /mavros/distance_sensor/hrlv_ez4_pub/sensor_position/x: 0.0
 * /mavros/distance_sensor/hrlv_ez4_pub/sensor_position/y: 0.0
 * /mavros/distance_sensor/hrlv_ez4_pub/sensor_position/z: -0.1
 * /mavros/distance_sensor/laser_1_sub/id: 3
 * /mavros/distance_sensor/laser_1_sub/orientation: ROLL_180
 * /mavros/distance_sensor/laser_1_sub/subscriber: True
 * /mavros/distance_sensor/lidarlite_pub/field_of_view: 0.0
 * /mavros/distance_sensor/lidarlite_pub/frame_id: lidarlite_laser
 * /mavros/distance_sensor/lidarlite_pub/id: 1
 * /mavros/distance_sensor/lidarlite_pub/orientation: ROLL_180
 * /mavros/distance_sensor/lidarlite_pub/send_tf: True
 * /mavros/distance_sensor/lidarlite_pub/sensor_position/x: 0.0
 * /mavros/distance_sensor/lidarlite_pub/sensor_position/y: 0.0
 * /mavros/distance_sensor/lidarlite_pub/sensor_position/z: -0.1
 * /mavros/distance_sensor/sonar_1_sub/id: 2
 * /mavros/distance_sensor/sonar_1_sub/orientation: ROLL_180
 * /mavros/distance_sensor/sonar_1_sub/subscriber: True
 * /mavros/fcu_url: udp://localhost:1...
 * /mavros/gcs_url: udp://localhost:1...
 * /mavros/global_position/frame_id: fcu
 * /mavros/global_position/rot_covariance: 99999.0
 * /mavros/global_position/tf/child_frame_id: fcu_utm
 * /mavros/global_position/tf/frame_id: local_origin
 * /mavros/global_position/tf/send: False
 * /mavros/image/frame_id: px4flow
 * /mavros/imu/angular_velocity_stdev: 0.000349065850399
 * /mavros/imu/frame_id: fcu
 * /mavros/imu/linear_acceleration_stdev: 0.0003
 * /mavros/imu/magnetic_stdev: 0.0
 * /mavros/imu/orientation_stdev: 1.0
 * /mavros/local_position/frame_id: fcu
 * /mavros/local_position/tf/child_frame_id: fcu
 * /mavros/local_position/tf/frame_id: local_origin
 * /mavros/local_position/tf/send: False
 * /mavros/local_position/tf/send_fcu: False
 * /mavros/mission/pull_after_gcs: True
 * /mavros/mocap/use_pose: True
 * /mavros/mocap/use_tf: False
 * /mavros/odometry/estimator_type: 3
 * /mavros/plugin_blacklist: ['safety_area', '...
 * /mavros/plugin_whitelist: []
 * /mavros/px4flow/frame_id: px4flow
 * /mavros/px4flow/ranger_fov: 0.0
 * /mavros/px4flow/ranger_max_range: 5.0
 * /mavros/px4flow/ranger_min_range: 0.3
 * /mavros/safety_area/p1/x: 1.0
 * /mavros/safety_area/p1/y: 1.0
 * /mavros/safety_area/p1/z: 1.0
 * /mavros/safety_area/p2/x: -1.0
 * /mavros/safety_area/p2/y: -1.0
 * /mavros/safety_area/p2/z: -1.0
 * /mavros/setpoint_accel/send_force: False
 * /mavros/setpoint_attitude/reverse_throttle: False
 * /mavros/setpoint_attitude/tf/child_frame_id: attitude
 * /mavros/setpoint_attitude/tf/frame_id: local_origin
 * /mavros/setpoint_attitude/tf/listen: False
 * /mavros/setpoint_attitude/tf/rate_limit: 10.0
 * /mavros/setpoint_position/tf/child_frame_id: setpoint
 * /mavros/setpoint_position/tf/frame_id: local_origin
 * /mavros/setpoint_position/tf/listen: False
 * /mavros/setpoint_position/tf/rate_limit: 50.0
 * /mavros/startup_px4_usb_quirk: True
 * /mavros/sys/disable_diag: False
 * /mavros/sys/min_voltage: 10.0
 * /mavros/target_component_id: 1
 * /mavros/target_system_id: 1
 * /mavros/tdr_radio/low_rssi: 40
 * /mavros/time/time_ref_source: fcu
 * /mavros/time/timesync_avg_alpha: 0.6
 * /mavros/time/timesync_mode: MAVLINK
 * /mavros/vibration/frame_id: vibration
 * /mavros/vision_pose/tf/child_frame_id: vision
 * /mavros/vision_pose/tf/frame_id: local_origin
 * /mavros/vision_pose/tf/listen: False
 * /mavros/vision_pose/tf/rate_limit: 10.0
 * /mavros ...
(more)
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Closed for the following reason the question is answered, right answer was accepted by Maureen
close date 2017-06-26 12:32:35.860836

Comments

The answer seems to be correct, but since I had other problems I could not test it correctly

Maureen gravatar image Maureen  ( 2017-06-26 12:33:26 -0500 )edit

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answered 2017-06-21 11:50:43 -0500

eric1221bday gravatar image

So first, may I ask why you have gdb running? It shouldn't affect operations but it does not seem necessary.

Second, PX4 already has a process of launching a mavros connected gazebo simulation, documented here: https://dev.px4.io/en/simulation/ros_...

Specifically, the mavros_posix_sitl.launch file seems exactly what you need, and has been verified to work. If you need to customize aspects you can simply change some of the Args going into that launch file.

At a glance I'd say your issue is probably two fold, an improperly setup fcu_url, resulting in mavros being unable to connect to launched px4 software. As well as the fact that the px4 software isn't launched in the first place. The SITL consists of three separate software components, the gazebo simulation, the mavros ROS node, and the px4 SITL node. It looks like you never launched the px4 SITL node, so mavros thus has nothing to connect to. If you did the px4 Nsh interface should show up on terminal as well.

<node name="sitl" pkg="px4" type="px4" output="screen"
    args="$(find px4) $(arg rcS)">
</node>

This is the relevant line in px4 's gazebo launch file that I think you missed.

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Comments

Thank you! The debug was left there from a moment when I was trying to figure out what was wrong.

Maureen gravatar image Maureen  ( 2017-06-21 12:02:42 -0500 )edit

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Asked: 2017-06-21 09:28:21 -0500

Seen: 1,197 times

Last updated: Jun 21 '17