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Sitl Taking off dronekit python example give arming errors #1083
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Additional version info |
just discovered the issue below: |
#1066 solutions suggestion did not solve the problem for me. |
I just tried to run the taking off example on my real quad, it does not there either. @peterbarker can you please provide us with info of what to do? I saw that the last response was back in juli, can we expert a new release soon? Or is there a workaround. It seem like we cant use dronekit for much without the ability to change to guided/auto mode. |
Ok, so i think my problem was that dronekit was not pointing to the correct version of pymavlink after i downgraded to pymavlink 2.4.8 so fix this. Now it seem to takeoff (though with severel errors as seem in log below) So the fix here was as in #1066 to downgrade from pymavlink 2.4.12 to 2.4.8. (and make sure dronekit is using 2.4.8 not something else) So Log output: |
How did you make sure it was pointing to the right version of pymavlink |
Try the following (importance that you use sudo) sudo apt-get install python-pip3 python-dev from spyder open your script |
Thank you so much! |
You are welcome, hope it solved your problem :) |
I've seen this too. I use https://ardupilot.org/dev/docs/setting-up-sitl-on-linux.html this method instead with WSL. You can then use arducopter 4.1 rather than 3.3 which isn't very representative at this point. |
Can you make a pull request for your fix ? |
Just want to add, I seeminly only run into this problem when I skip running the simple scripts before branching off other peoples and getting the system confused. Be patient and dont try and do something you arent ready for but also dont stop challenging yourself. its a slow build. |
I happened to encounter this problem today when I was using pymavlink 2.4.16 along with python 3.9. I did as said and downgraded pymavlink to version 2.4.8, but it did not work with Python 3.7 (and above). I had to use Python 3.6 to install it successfully. I write this down in case another one will run into the same problem as me. |
I tested @Git-Ilan 's suggestion and can confirm it works, I downgraded to python 3.6 from 3.9 and also downgraded pymavlink to version 2.4.8 -- It worked; Still hope that dronekit will support python 3 officially anytime later. |
Any update on this? |
C:\Users\hp>pip install pymavlink==2.4.8 × Building wheel for pymavlink (pyproject.toml) did not run successfully. note: This error originates from a subprocess, and is likely not a problem with pip. when I tried installing pymavlink==2.4.8, this was the error I got, any comments or suggestion to resolve this, I am using latest version of python |
you will need to create a specific python ENV for your development. This
can be done using anaconda or this can be done using docker. once you have
the correct version of python installed you should be able to follow the
steps previously listed and get working!
*Adam Dabdoub*
Software Developer
c: 513.886.0301
…On Fri, Sep 29, 2023 at 8:32 AM Ujwal Basuthkar ***@***.***> wrote:
C:\Users\hp>pip install pymavlink==2.4.8
Collecting pymavlink==2.4.8
Using cached pymavlink-2.4.8.tar.gz (3.6 MB)
Installing build dependencies ... done
Getting requirements to build wheel ... done
Installing backend dependencies ... done
Preparing metadata (pyproject.toml) ... done
Requirement already satisfied: future in
c:\users\hp\appdata\local\programs\python\python311\lib\site-packages (from
pymavlink==2.4.8) (0.18.3)
Requirement already satisfied: lxml in
c:\users\hp\appdata\local\programs\python\python311\lib\site-packages (from
pymavlink==2.4.8) (4.9.3)
Building wheels for collected packages: pymavlink
Building wheel for pymavlink (pyproject.toml) ... error
error: subprocess-exited-with-error
× Building wheel for pymavlink (pyproject.toml) did not run successfully.
│ exit code: 1
╰─> [75 lines of output]
###################################
Skipping mavnative
###################################
running bdist_wheel
running build
running build_py
WARNING: Failed to import lxml module etree. Are lxml, libxml2 and libxslt
installed? XML validation will not be performed
Using message definitions from
C:\Users\hp\AppData\Local\Temp\pip-install-ln43nl_b\pymavlink_c1dbb76e397e410897ff00e34d003bb1\message_definitions
Building
C:\Users\hp\AppData\Local\Temp\pip-install-ln43nl_b\pymavlink_c1dbb76e397e410897ff00e34d003bb1\message_definitions\v1.0\ardupilotmega.xml
for protocol 1.0
Traceback (most recent call last):
File
"C:\Users\hp\AppData\Local\Programs\Python\Python311\Lib\site-packages\pip_vendor\pyproject_hooks_in_process_in_process.py",
line 353, in
main()
File
"C:\Users\hp\AppData\Local\Programs\Python\Python311\Lib\site-packages\pip_vendor\pyproject_hooks_in_process_in_process.py",
line 335, in main
json_out['return_val'] = hook(**hook_input['kwargs'])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"C:\Users\hp\AppData\Local\Programs\Python\Python311\Lib\site-packages\pip_vendor\pyproject_hooks_in_process_in_process.py",
line 251, in build_wheel
return _build_backend().build_wheel(wheel_directory, config_settings,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"C:\Users\hp\AppData\Local\Temp\pip-build-env-gh_3ni4d\overlay\Lib\site-packages\setuptools\build_meta.py",
line 434, in build_wheel
return self._build_with_temp_dir(
^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"C:\Users\hp\AppData\Local\Temp\pip-build-env-gh_3ni4d\overlay\Lib\site-packages\setuptools\build_meta.py",
line 419, in _build_with_temp_dir
self.run_setup()
File
"C:\Users\hp\AppData\Local\Temp\pip-build-env-gh_3ni4d\overlay\Lib\site-packages\setuptools\build_meta.py",
line 507, in run_setup
super(
*BuildMetaLegacyBackend, self).run_setup(setup_script=setup_script) File
"C:\Users\hp\AppData\Local\Temp\pip-build-env-gh_3ni4d\overlay\Lib\site-packages\setuptools\build_meta.py",
line 341, in run_setup exec(code, locals()) File "", line 109, in File
"C:\Users\hp\AppData\Local\Temp\pip-build-env-gh_3ni4d\overlay\Lib\site-packages\setuptools_init*.py",
line 103, in setup
return distutils.core.setup(**attrs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"C:\Users\hp\AppData\Local\Temp\pip-build-env-gh_3ni4d\overlay\Lib\site-packages\setuptools_distutils\core.py",
line 185, in setup
return run_commands(dist)
^^^^^^^^^^^^^^^^^^
File
"C:\Users\hp\AppData\Local\Temp\pip-build-env-gh_3ni4d\overlay\Lib\site-packages\setuptools_distutils\core.py",
line 201, in run_commands
dist.run_commands()
File
"C:\Users\hp\AppData\Local\Temp\pip-build-env-gh_3ni4d\overlay\Lib\site-packages\setuptools_distutils\dist.py",
line 969, in run_commands
self.run_command(cmd)
File
"C:\Users\hp\AppData\Local\Temp\pip-build-env-gh_3ni4d\overlay\Lib\site-packages\setuptools\dist.py",
line 989, in run_command
super().run_command(command)
File
"C:\Users\hp\AppData\Local\Temp\pip-build-env-gh_3ni4d\overlay\Lib\site-packages\setuptools_distutils\dist.py",
line 988, in run_command
cmd_obj.run()
File
"C:\Users\hp\AppData\Local\Temp\pip-build-env-gh_3ni4d\overlay\Lib\site-packages\wheel\bdist_wheel.py",
line 364, in run
self.run_command("build")
File
"C:\Users\hp\AppData\Local\Temp\pip-build-env-gh_3ni4d\overlay\Lib\site-packages\setuptools_distutils\cmd.py",
line 318, in run_command
self.distribution.run_command(command)
File
"C:\Users\hp\AppData\Local\Temp\pip-build-env-gh_3ni4d\overlay\Lib\site-packages\setuptools\dist.py",
line 989, in run_command
super().run_command(command)
File
"C:\Users\hp\AppData\Local\Temp\pip-build-env-gh_3ni4d\overlay\Lib\site-packages\setuptools_distutils\dist.py",
line 988, in run_command
cmd_obj.run()
File
"C:\Users\hp\AppData\Local\Temp\pip-build-env-gh_3ni4d\overlay\Lib\site-packages\setuptools_distutils\command\build.py",
line 131, in run
self.run_command(cmd_name)
File
"C:\Users\hp\AppData\Local\Temp\pip-build-env-gh_3ni4d\overlay\Lib\site-packages\setuptools_distutils\cmd.py",
line 318, in run_command
self.distribution.run_command(command)
File
"C:\Users\hp\AppData\Local\Temp\pip-build-env-gh_3ni4d\overlay\Lib\site-packages\setuptools\dist.py",
line 989, in run_command
super().run_command(command)
File
"C:\Users\hp\AppData\Local\Temp\pip-build-env-gh_3ni4d\overlay\Lib\site-packages\setuptools_distutils\dist.py",
line 988, in run_command
cmd_obj.run()
File "", line 103, in run
File "", line 64, in generate_content
File
"C:\Users\hp\AppData\Local\Temp\pip-install-ln43nl_b\pymavlink_c1dbb76e397e410897ff00e34d003bb1\generator\mavgen.py",
line 247, in mavgen_python_dialect
if not mavgen(opts, [xml]):
^^^^^^^^^^^^^^^^^^^
File
"C:\Users\hp\AppData\Local\Temp\pip-install-ln43nl_b\pymavlink_c1dbb76e397e410897ff00e34d003bb1\generator\mavgen.py",
line 142, in mavgen
xml.append(mavparse.MAVXML(fname, opts.wire_protocol))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"C:\Users\hp\AppData\Local\Temp\pip-install-ln43nl_b\pymavlink_c1dbb76e397e410897ff00e34d003bb1\generator\mavparse.py",
line 420, in *init*
m.crc_extra = message_checksum(m)
^^^^^^^^^^^^^^^^^^^
File
"C:\Users\hp\AppData\Local\Temp\pip-install-ln43nl_b\pymavlink_c1dbb76e397e410897ff00e34d003bb1\generator\mavparse.py",
line 447, in message_checksum
crc.accumulate_str(msg.name + ' ')
File
"C:\Users\hp\AppData\Local\Temp\pip-install-ln43nl_b\pymavlink_c1dbb76e397e410897ff00e34d003bb1\generator\mavcrc.py",
line 34, in accumulate_str
bytes.fromstring(buf)
^^^^^^^^^^^^^^^^
AttributeError: 'array.array' object has no attribute 'fromstring'
[end of output]
note: This error originates from a subprocess, and is likely not a problem
with pip.
ERROR: Failed building wheel for pymavlink
Failed to build pymavlink
ERROR: Could not build wheels for pymavlink, which is required to install
pyproject.toml-based projects
when I tried installing pymavlink==2.4.8, this was the error I got, any
comments or suggestion to resolve this, I am using latest version of python
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@ItayShiff I don't think so it's a problem from dronekit... Please read this for further understanding - #484 (comment) Afaik, it's the pymavlink breaking dronekit when I tested it on windows(don't know about other platforms) back then, i don't exactly know what's the situation now. What i did to fix was downgrading python version using PyLauncher and also installing lower version of pymavlink as I mentioned in previous comment. I've also read somewhere that they aren't going to upgrade docs for python3, so maybe they aren't working on this. They still mention python 2.x in docs... https://dronekit-python.readthedocs.io/en/latest/develop/installation.html |
@Usbasuthkar What version of python are you on? If you're on windows, please try using PyLauncher and switch to Python 3.6 or lower as I mentioned before, install the same pymavlink==2.4.8 in <=py3.6 . It should hopefully work, I know this is a broken solution but there aren't any resolutions for this afaik, please let me know if there are any. |
Thanks a lot guys it worked, what I did was just reduced my python version to 2.7.18, pymavlink to 2.4.8, mavproxy to 1.8.22 and for trial I just used a python code from dronekit documentation. |
Looking at the release notes, it officially supports python 3.(after 2.9.1) However, many Linux kernels are also adopting python3.x as the stable version of system python, so dronekit-python will have to change as well. |
Hi Guys,
I wanted to try the dronekit-sitl before running dronekit on my real quadcopter. So I installed dronekit and drone-sitl on ubuntu 20.04.1 LTS, by following the guide: https://dronekit-python.readthedocs.io/en/latest/guide/quick_start.html
Then i did the following:
using python3
The output of taking off dronekit python example is:
CRITICAL:autopilot:APM:Copter V3.3 (d6053245)
CRITICAL:autopilot:Frame: QUAD
CRITICAL:autopilot:Calibrating barometer
CRITICAL:autopilot:Initialising APM...
CRITICAL:autopilot:barometer calibration complete
CRITICAL:autopilot:GROUND START
Basic pre-arm checks
Waiting for vehicle to initialise...
Waiting for vehicle to initialise...
Waiting for vehicle to initialise...
Waiting for vehicle to initialise...
Waiting for vehicle to initialise...
Arming motors
Waiting for arming...
Waiting for arming...
Waiting for arming...
Waiting for arming...
ERROR:autopilot:ARMING MOTORS
CRITICAL:autopilot:GROUND START
Waiting for arming...
WARNING:dronekit:Link timeout, no heartbeat in last 5 seconds
CRITICAL:autopilot:Initialising APM...
Taking off!
Altitude: 0.0
Altitude: 0.0
Altitude: 0.0
Altitude: 0.0
Altitude: 0.0
Altitude: 0.01
Altitude: 0.02
Altitude: 0.02
Altitude: 0.03
ERROR:autopilot:DISARMING MOTORS
Altitude: 0.03
Altitude: 0.01
Altitude: 0.0
Altitude: 0.0
From the output it seems like the first 5 lines are stated as critical for some reason dont know if it matters.
It then manage to pass the pre-arm checks and starting arming unstill the ERROR:autopilot:ARMING MOTORS is returned. It then manage to arm anyway and takeoff until the it disarm after 10 second.
I ran the example multiple times and disarming always occurs after 10 seconds.
what is going on here? does the sitl and taking off example works out of the box or do I need to do something else?
looking forward to hear from you guys.
br.
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