ArrayIndexOutOfBoundsException in ConfigCompositionDataStatus.parseElements using nRF Mesh Library

[Quentin-LL]

Hi,

I am running a modified version of the light switch example, where I have modified the generic on off model to send byte arrays.

So I have been changing my models ids and opcodes ids few days ago in order to be compliant with the spec using vendor models and vendor opcodes, everything worked fine, until now, I probably changed something but I can't figure out what it is, when provisioning a new device, I am getting this error (Here's the full trace) :

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.test, PID: 25402
    java.lang.ArrayIndexOutOfBoundsException: length=26; index=26
        at no.nordicsemi.android.mesh.transport.ConfigCompositionDataStatus.parseElements(ConfigCompositionDataStatus.java:158)
        at no.nordicsemi.android.mesh.transport.ConfigCompositionDataStatus.parseCompositionDataPages(ConfigCompositionDataStatus.java:138)
        at no.nordicsemi.android.mesh.transport.ConfigCompositionDataStatus.parseStatusParameters(ConfigCompositionDataStatus.java:89)
        at no.nordicsemi.android.mesh.transport.ConfigCompositionDataStatus.<init>(ConfigCompositionDataStatus.java:84)
        at no.nordicsemi.android.mesh.transport.DefaultNoOperationMessageState.parseAccessMessage(DefaultNoOperationMessageState.java:86)
        at no.nordicsemi.android.mesh.transport.DefaultNoOperationMessageState.parseMeshPdu(DefaultNoOperationMessageState.java:61)
        at no.nordicsemi.android.mesh.transport.BaseMeshMessageHandler.parseMeshPduNotifications(BaseMeshMessageHandler.java:147)
        at no.nordicsemi.android.mesh.MeshMessageHandler.parseMeshPduNotifications(MeshMessageHandler.java:61)
        at no.nordicsemi.android.mesh.MeshManagerApi.parseNotifications(MeshManagerApi.java:306)
        at no.nordicsemi.android.mesh.MeshManagerApi.handleNotifications(MeshManagerApi.java:278)
        at com.example.meshutilities.repositories.NrfMeshRepository.onDataReceived(NrfMeshRepository.java:690)
        at com.example.meshutilities.ble.BleMeshManager$1.lambda$initialize$0$BleMeshManager$1(BleMeshManager.java:95)
        at com.example.meshutilities.ble.-$$Lambda$BleMeshManager$1$8UAXHAewMpEiHJMD1HWXsyWK96A.onDataReceived(Unknown Source:2)
        at no.nordicsemi.android.ble.ValueChangedCallback.notifyValueChanged(ValueChangedCallback.java:123)
        at no.nordicsemi.android.ble.BleManager$BleManagerGattCallback.onCharacteristicChangedSafe(BleManager.java:2884)
        at no.nordicsemi.android.ble.MainThreadBluetoothGattCallback.lambda$onCharacteristicChanged$4$MainThreadBluetoothGattCallback(MainThreadBluetoothGattCallback.java:135)
        at no.nordicsemi.android.ble.-$$Lambda$MainThreadBluetoothGattCallback$7AU42XLOqZKSRIMVuifw3eecBbw.run(Unknown Source:8)
        at android.os.Handler.handleCallback(Handler.java:873)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:201)
        at android.app.ActivityThread.main(ActivityThread.java:6810)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:873)

I doubt it has something to do on the mobile application side as it still works when using the vanilla light switch example.

It looks like the composition data that is gathered is wrong which leads to an array index out of bounds exception.

I am developing on a nRF52 DK (nRF52832), with SDK 16.0.0, SDK for mesh 4.0.0 and softdevice s132 v7.0.1 and nRF mesh application on Android or my own application using the nrf mesh library, but both of them crash during the provisioning process.

Do you have an idea what could be the cause of this problem ?

Best regards,

Quentin

[Kenneth]

Unfortunately many are out of office these days, so don't have any other suggestion than to try to step back changes and see what change cause the failure. We can try to look into in a few weeks if you are not able to solve it in the meantime.

Kenneth

[Quentin-LL]

Alright, so I tried changing few parameters and other stuff, didn't do anything about the error, and for some unknown reasons, it started working again today, as no modifications have been made to the code. Could it be due to the bluetooth scanner on the phone or something like that ? I have no clue as to why it stopped working and started working again.

[Kaja]

Great that it started working again! 

Difficult to say what the issue was, but if you get an issue again, please make a new case so that we can assign the right engineer to your case. 

Best regards,
Kaja