Android Question DJI Binding Process - Camera / battery not ready

[prajinpraveen]

Hello All,

I tried to connect DJI Mavic mini 2. I get the following error. Does anyone know a solution for this? Many thanks.

AfterAircraftConnected
Camera / battery not ready

(CameraReady false and BatteryReady false)

 

[Erel]

Hard to say.
What happens if you comment out this code:

If aircraft.CameraReady = False Or aircraft.BatteryReady = False Then
    Log("Camera / battery not ready")
    Sleep(500)
    If aircraft.Connected Then AfterAircraftConnected
    Return
End If

 

[prajinpraveen]

** Activity (main) Pause, UserClosed = true **
** Activity (main) Create, isFirst = false **
** Activity (main) Resume **
Product connected
AfterAircraftConnected
main$ResumableSub_AfterAircraftConnectedresume (java line: 584)
java.lang.NullPointerException: Attempt to invoke virtual method 'void dji.sdk.battery.Battery.setStateCallback(dji.common.battery.BatteryState$Callback)' on a null object reference
at anywheresoftware.b4a.objects.DJIAircraftWrapper.RegisterBatteryStateEvent(DJIAircraftWrapper.java:51)
at za.co.irays.dronetest.main$ResumableSub_AfterAircraftConnected.resume(main.java:584)
at za.co.irays.dronetest.main._afteraircraftconnected(main.java:555)
at za.co.irays.dronetest.main._sdk_productconnected(main.java:1288)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:213)
at anywheresoftware.b4a.BA$2.run(BA.java:387)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:246)
at android.app.ActivityThread.main(ActivityThread.java:8633)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)
(NullPointerException) java.lang.NullPointerException: Attempt to invoke virtual method 'void dji.sdk.battery.Battery.setStateCallback(dji.common.battery.BatteryState$Callback)' on a null object reference
** Activity (main) Pause, UserClosed = false **

 

[prajinpraveen]

am i doing this right?

Installed DJI Fly app, can connect to the drone and fly the drone
Registered my App with the same package name on DJI Developer page, changed the app key in the manifest editor
Installed the Drone app on my phone
Switch the Drone on
Switch the controller on
Connect the USB cable from the controller to the Phone
The phone prompts for which app to use ( DJI Fly or Drone - B4A ) - Chose Drone App
Use B4A bridge to check what is happening on the Drone App

 

[Erel]

Your code and configuration looks correct. Sorry but I can't say more.
I will update the SDK in the near future.

 

[prajinpraveen]

Thanks Erel