Opt for asynchronous Olympe

In the basic examples above we’ve always performed actions synchronously because we were always immediately waiting for an action to complete with the olympe.Expectation.wait() method.

Objective:

Send flying commands to the drone asynchronously. While the drone executes those commands, we start a video recording and change the gimbal velocity target along the pitch axis. After sending those camera-related commands, we call the olympe.Expectation.wait() method on the flying expectation and stop the recording.

First, reset the simulation: sphinx-cli action -m world fwman world_reset_all in a terminal.

Copy paste the following Python asyncaction.py script somewhere in your directory:

Body

The olympe.Drone() class processes commands and events asynchronously so that multiple commands can be sent to the drone and processed concurrently. The events associated with asynchronous actions are interleaved in an undefined order. That is the reason why we have to wait for each of them.

Execution

To execute this script, run the following command from the shell you’ve just sourced:

(olympe-python3) $ python ./asyncaction.py