Know from logs when reached waypoint

Is there a robust way to know from the logs when the mission reached each waypoint?
I tried to dig in the messages saved in the logs but I didn’t find any usable data.
My initial idea was to plan a mission taking a photo every waypoint so that I could check control_output1 data (aux) for the camera trigger, but my pixhawk2 has the “silicon errata” problem and the camera module is not supported.

Hey there,
Is it possible to set your channel 7 to PWM Trigger?

There is a MAVLink message for waypoint item reached. Does that help?

Not really. I need something saved in the logs.
I think I can use the setpoint_triplet to check when a new waypoint is set even if it is not the best solution.