Timeout when reading navdatas

[fig0451]

Hi guys, got a new problem.

I open one terminal, run 'roscore' to initialize ros and get it running. Open terminal two, run 'rosrun ardrone_autonomy ardrone_driver' to get the module running. Open terminal three in examples, and try to do hover.js by running 'node hover.js'.

My console gets spammed with:

Timeout when reading navdatas - resending a navdata request on port 5554 Reconnecting ... OK Reconnecting ... OK Reconnecting ... OK Timeout when reading navdatas - resending a navdata request on port 5554 Reconnecting ... OK Reconnecting ... OK Reconnecting ... OK

Any ideas why this is happening?

[tomas-c]

Having the same problem with two 2.0 quadcopters. Even when 1m away and not flying, navdata publish rates sometimes (for 5s every couple of minutes) slow down from 200Hz to 4-10Hz and then quadcopter reconnects. Definitely not WiFi interference as it happens even in an RF screen room.

[tomas-c]

Turns out my problem was the NetworkManager scanning for WiFi networks every few minutes. This caused delays in communication and in turn ardrone com watchdog timeouts.

How often do you get those "Reconnecting ... OK" messages?

[fig0451]

Once the connection opens up it just spams it multiple times a second

[mani-monaj]

It is very likely a network/wifi issue. Any more investigations?

[safrimus]

I'm having the same issue as well, this is printed out on my console:

Reconnecting ... OK Reconnecting ... OK Sending default CAT_APPLI settings Sending default CAT_USER settings Sending default CAT_SESSION settings [ INFO] [1422156308.410831027]: Successfully connected to 'My ARDrone' (AR-Drone 2.0 - Firmware: 2.4.8) - Battery(%): 0 [ INFO] [1422156308.420409877]: Navdata Publish Settings: [ INFO] [1422156308.429347736]: Legacy Navdata Mode: On [ INFO] [1422156308.438117598]: ROS Loop Rate: 50 Hz [ INFO] [1422156308.444159503]: Realtime Navdata Publish: Off [ INFO] [1422156308.452091378]: Realtime Video Publish: Off [ INFO] [1422156308.460161251]: Drone Navdata Send Speed: 200Hz (navdata_demo=0) Reconnecting ... OK Reconnecting ... OK Reconnecting ... OK .... Timeout when reading navdatas - resending a navdata request on port 5554 Reconnecting ... OK ...

I'm running this on a Raspberry Pi with ROS-groovy. Any suggestions?

[karim-nemra]

Hello I wanna use the new Parrot Bebop with ardrone_autonomy using PC with Linux 12.04 ans ROS hydro, I get the following message: nemra@nemra-Z68X-UD4-B3:~/catkin_wsa$ rosrun /home/nemra/catkin_wsa/devel/lib/ardrone_autonomy ardrone_driver [rospack] Error: stack/package /home/nemra/catkin_wsa/devel/lib/ardrone_autonomy not found Wait authentification Wait authentification Wait authentification ===================+> nemra 192.168.1.1 [ INFO] [1423827846.447910671]: Root Frame is: 0 [ INFO] [1423827846.448939189]: No values found for ~cov/imu_la in parameters, set all to zero. [ INFO] [1423827846.449874967]: No values found for ~cov/imu_av in parameters, set all to zero. [ INFO] [1423827846.450714696]: No values found for ~cov/imu_or in parameters, set all to zero. Something must be really wrong with the SDK!Deleting Profile -cea48d22 Deleting Application -e182b69b Input device Teleop added Starting thread video_stage Starting thread update_ros Thread update_ros started Set IP_TOS ok Starting thread navdata_update

video stage thread initialisation

Starting thread ardrone_control Thread navdata_update in progress... Video multisocket : init 2 sockets Video multisocket : connecting socket 0 on port 5555 UDP Start thread thread_academy_download Academy download stage resumed Video multisocket : connecting socket 1 on port 5555 TCP PA : MEMORY SPACE ALLOWED : 40 MB Start thread thread_academy Start thread thread_academy_upload Timeout when reading navdatas - resending a navdata request on port 5554 Timeout when reading navdatas - resending a navdata request on port 5554 Timeout when reading navdatas - resending a navdata request on port 5554

• Connection failed Academy download stage paused FTOSFC: No route to host Timeout when reading navdatas - resending a navdata request on port 5554 Timeout when reading navdatas - resending a navdata request on port 5554 [ INFO] [1423827851.488410487]: SEND: CAT_APPLI/navdata_options = 268435456.000000 (DEFAULT = 65537.000000) Segmentation fault (core dumped)

Pleas any one can help me

[ganeshrk95]

Guys ! Any update on this issue? Facing the same problem on AR Drone 2.0 Power edition running 2.4.8 firmware.

-Ganesh

[tomas-c]

For me it was NetworkManager automatically scanning for WiFI networks every few minutes. Try setting up the connection using wpa_supplicant.