Why is IPerceptionManager empty?

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Yusaku Washio

• 2023年11月29日 09:53

I am currently creating an obstacle avoidance program using DJI Mini3 Pro and DJI RC PRO. The SDK version is 5.7.1.

I called ObstacleData{horizontalObstacleDistance=[], upwardObstacleDistance=0, downwardObstacleDistance=0, horizontalAngleInterval=0} of class IPerceptionManager, but they were all null or 0.

import dji.v5.manager.aircraft.perception.data.ObstacleData
val horizontalObstacleDistance = ObstacleData()

When I checked the definition file, I found the following program.

public List<Integer> getHorizontalObstacleDistance() {
    return null;
}

public int getUpwardObstacleDistance() {
    return 0;
}

I think this will naturally return null or 0.
There is an explanation in the API reference, so I assume it is not an unimplemented feature, but does this feature need to be overridden somewhere?

thank you.

1

• 

  DJI Developer Support

  • 2023年11月30日 06:39

  I hope this message finds you well. I would like to inform you that we are aware of the issue you have encountered with the obstacle avoidance data of the mini 3pro. Rest assured, we are actively working on resolving this matter in the upcoming version.

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• 

  Yusaku Washio

  • 2023年11月30日 09:36

  Thanks for the quick reply!
  I eagerly await the API update.

  By the way, the aforementioned definition code is the code of the API decompiled in AndroidStudio, so I am not sure if it is complete or not.
  If this return null is as the API is designed, it seems to cause similar problems for other aircraft that are not DJIMIni3Pro.

  I am currently facing similar problems with other implementations such as DoublePoint2D. Is this an inherent specification of the API, a function that will be implemented in the future but is currently empty, or is this not the case?

  In some cases I would like to consider other options such as version 4 of the API.

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• 

  DJI Developer Support

  • 2023年12月01日 03:47

  I would like to inform you that the issue you have mentioned is specific to the mini3 series aircraft. However, I would like to assure you that obstacle avoidance information can be obtained by other aircraft models.

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• 

  Go Kobayashi

  • 2023年12月04日 06:02

  I'm very interested in this post.

  We have the same situation with our BUSINESS PRODUCTION using DJI Mini 3 Pro.
  ObstacleData method returns null.

  Please tell me exactly if there is a problem with the method.
  Do I need to initialize any managers before using the method?

  It is unlikely that DJI Mini 3 Pro issues are affecting the method.
  If there is only a problem with a particular product, it should be returned as an error.

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