I have created a timeline mission to run a set of actions so the drone flies in a straight line capturing photos at 2 second intervals while the camera points straight down. I want the mission to pause just after the gimbal action completes. Here are the scheduled actions:
The mission runs fine but I want to pause the timeline programatically after a DJIGimbalAttitudeAction completes so I can adjust the camera settings before the last two actions are run.
Is this possible? I tried to execute this if the indexOfScheduledElement matched the index of the DJIGimbalAttitudeAction timeline element in the addListener:(id)listener toTimelineProgressWithBlock of DJIMissionControl but I got a DJISDKMissionErrorDomain error 10007
On playing around with this, pausing programmatically seems to work fine if the timeline is in the middle of something like a DJIGoToAction but anything else seems to cause an error. Is there a better way to execute pauseTimeline cleanly?
After a lot of testing I found that if I trigger pauseTimeline when the currently running timeline element is at the DJIMissionControlTimelineEventStarted event in the timeline listener it will pause just fine as long as the action/element running is NOT a DJIShootPhotoAction - any pause on a DJIShootPhotoAction results in a camera busy error.
If the same actions (e.g. DJIGoToAction, DJIAircraftYawAction, DJIGimbalAttitudeAction) are at the DJIMissionControlTimelineEventProgressed stage they fails with DJISDKMissionErrorDomain error 10007
[DJISDKManager.missionControl addListener:self toTimelineProgressWithBlock:^(DJIMissionControlTimelineEvent event, id<DJIMissionControlTimelineElement> _Nullable element, NSError * _Nullable error, id _Nullable info) {
if (event == DJIMissionControlTimelineEventStarted) {
[DJISDKManager.missionControl pauseTimeline];
}
}];