Make cload Error

[kul46]

Hello, I am using Ubuntu 24.04.01 LTS and installed the cfclient and firmware. However, on following the "Getting started with development" doc I am getting this error when I use the last "make cload" command. Would really appreciate any help to flash the firmware successfully.

$ make cload
tools/kbuild/Makefile.kbuild:147: warning: overriding recipe for target 'cload'
Makefile:141: warning: ignoring old recipe for target 'cload'
make[1]: Entering directory '/home/kulvir-chavda/crazyflie-firmware/build'
python3 -m cfloader flash cf2.bin stm32-fw
Restart the Crazyflie you want to bootload in the next
10 seconds ...
/home/kulvir-chavda/crazyflie-env/lib/python3.12/site-packages/libusb_package/init.py:51: DeprecationWarning: is_resource is deprecated. Use files() instead. Refer to https://importlib-resources.readthedocs.io/en/latest/using.html#migrating-from-legacy for migration advice.
if resources.is_resource(name, _LIBRARY_NAME):
/home/kulvir-chavda/crazyflie-env/lib/python3.12/site-packages/libusb_package/init.py:52: DeprecationWarning: path is deprecated. Use files() instead. Refer to https://importlib-resources.readthedocs.io/en/latest/using.html#migrating-from-legacy for migration advice.
path_resource = resources.path(name, _LIBRARY_NAME)
Failed to flash: [Errno 2] Entity not found
make[1]: *** [/home/kulvir-chavda/crazyflie-firmware/Makefile:141: cload] Error 255
make[1]: Leaving directory '/home/kulvir-chavda/crazyflie-firmware/build'
make: *** [tools/kbuild/Makefile.kbuild:150: sub-make] Error 2

[ToveRumar]

Hi @kul46 !
Thank you for the detailed description of you issue, this helps a lot when trying to find the root cause!
It looks like the Crazyradio is not found for some reason. There could be several reasons for this.
It could be a crazyradio software issue, is the radio behaving normally when connecting and communicating with the Crazyflie?
Is the radio connected via a dock?

I would also try updating my libusb library. It looks like it old be old, based on the deprecation warnings.

[kul46]

Hello! Thank you for your reply!

I got the Crazyradio to connect to the Crazyflie and send python scripts. They work. However, after I send one script, to send another one I have to wait for the program to end then remove the radio, restart the crazyflie, and execute another script. I am not sure if that is normal but removing and reconnecting the Crazyradio/restarting the Crazyflie everytime I want to reconnect to cfclient or upload another script seems redundant.

Additionally, while the radio is transmitting and the crazyflie is executing scripts well, the warnings have still not disappeared:
(crazyflie-env) kulvir-chavda@kulvir-chavda-Blade-14-RZ09-0482:~/crazyflie-lib-python/myprojects$ python3 square.py
/home/kulvir-chavda/crazyflie-env/lib/python3.12/site-packages/libusb_package/__init__.py:51: DeprecationWarning: is_resource is deprecated. Use files() instead. Refer to https://importlib-resources.readthedocs.io/en/latest/using.html#migrating-from-legacy for migration advice.
  if resources.is_resource(__name__, _LIBRARY_NAME):
/home/kulvir-chavda/crazyflie-env/lib/python3.12/site-packages/libusb_package/__init__.py:52: DeprecationWarning: path is deprecated. Use files() instead. Refer to https://importlib-resources.readthedocs.io/en/latest/using.html#migrating-from-legacy for migration advice.
  path_resource = resources.path(__name__, _LIBRARY_NAME)
/home/kulvir-chavda/crazyflie-lib-python/cflib/crazyflie/param.py:336: DeprecationWarning: isSet() is deprecated, use is_set() instead
  if not self._initialized.isSet():
/home/kulvir-chavda/crazyflie-lib-python/cflib/crazyflie/param.py:336: DeprecationWarning: isSet() is deprecated, use is_set() instead
  if not self._initialized.isSet():
Taking off...
Warning: Already flying. Continuing...
Flying square...
Landing...
Flight complete!

Also, for some reason the ".takeoff()" command kept sending an error that the drone is "Already Flying" that I had to bypass using a try/catch statement.

I did try to update my libraries but the notices have not disappeared:

(crazyflie-env) kulvir-chavda@kulvir-chavda-Blade-14-RZ09-0482:~/crazyflie-lib-python/myprojects$ pip install --upgrade libusb_package
Requirement already satisfied: libusb_package in /home/kulvir-chavda/crazyflie-env/lib/python3.12/site-packages (1.0.26.1)
(crazyflie-env) kulvir-chavda@kulvir-chavda-Blade-14-RZ09-0482:~/crazyflie-lib-python/myprojects$ pip install --upgrade cflib
Requirement already satisfied: cflib in /home/kulvir-chavda/crazyflie-env/lib/python3.12/site-packages (0.1.27.post1.dev71+g1ba1804)
Requirement already satisfied: pyusb~=1.2 in /home/kulvir-chavda/crazyflie-env/lib/python3.12/site-packages (from cflib) (1.3.1)
Requirement already satisfied: libusb-package~=1.0 in /home/kulvir-chavda/crazyflie-env/lib/python3.12/site-packages (from cflib) (1.0.26.1)
Requirement already satisfied: scipy~=1.14 in /home/kulvir-chavda/crazyflie-env/lib/python3.12/site-packages (from cflib) (1.15.1)
Requirement already satisfied: numpy~=1.26 in /home/kulvir-chavda/crazyflie-env/lib/python3.12/site-packages (from cflib) (1.26.4)
Requirement already satisfied: packaging~=24.2 in /home/kulvir-chavda/crazyflie-env/lib/python3.12/site-packages (from cflib) (24.2)
(crazyflie-env) kulvir-chavda@kulvir-chavda-Blade-14-RZ09-0482:~/crazyflie-lib-python/myprojects$ pip install --upgrade cflib libusb_package importlib-resources
Requirement already satisfied: cflib in /home/kulvir-chavda/crazyflie-env/lib/python3.12/site-packages (0.1.27.post1.dev71+g1ba1804)
Requirement already satisfied: libusb_package in /home/kulvir-chavda/crazyflie-env/lib/python3.12/site-packages (1.0.26.1)
Collecting importlib-resources
  Downloading importlib_resources-6.5.2-py3-none-any.whl.metadata (3.9 kB)
Requirement already satisfied: pyusb~=1.2 in /home/kulvir-chavda/crazyflie-env/lib/python3.12/site-packages (from cflib) (1.3.1)
Requirement already satisfied: scipy~=1.14 in /home/kulvir-chavda/crazyflie-env/lib/python3.12/site-packages (from cflib) (1.15.1)
Requirement already satisfied: numpy~=1.26 in /home/kulvir-chavda/crazyflie-env/lib/python3.12/site-packages (from cflib) (1.26.4)
Requirement already satisfied: packaging~=24.2 in /home/kulvir-chavda/crazyflie-env/lib/python3.12/site-packages (from cflib) (24.2)
Downloading importlib_resources-6.5.2-py3-none-any.whl (37 kB)
Installing collected packages: importlib-resources
Successfully installed importlib-resources-6.5.2

Is my hardware faulty or is there something else to this issue? Really appreciate your help. I need to get the radio to be able to transmit two scripts at the same time while one is running but it cant as I need to remove and reconnect and restart the drone for every individual script.

[ToveRumar]

Hi @kul46 !
Good that some of your problems where solved!

It is not normal to have to restart everything in between runs.
What scripts are you running, is it our examples or your own?

If you are running our examples, make sure to disconnect the radio from the Crazyflie before running the next script (i.e add this programatically to the scripts).

Do you mean that if you only use the cfclient you can not connect, disconnect and connect again?

If the crazyflie crashes hard you might need to restart it after reconnecting. This is implemented for safety reasons.

I need some more specific information about what it is you are doing and where it is failing, to be able to help you.

[kul46]

Hello!

The scripts I am running are my own python scripts that are derived from the examples. However, the problem remains the same when I run your examples exclusively as well.

Would you be able to give me an example of disconnecting the radio programmatically?

Yes, while running cfclient and plugging in the Crazyradio, I hit connect and it works. However, if I hit disconnect then I have to physically remove the radio, restart the drone, plug-in the radio again, and reconnect. Also, if I hit the "scan" button, it does not connect anymore (the green light flashes on and turns off) and I have to remove/plug-in the radio again and hit "connect" directly.

All these are while the crazyflie is stable and upright on the ground without triggering the safety.

Do let me know if there is anything else I can provide. My libraries still give the same warnings.

Thank you!