BLE GATT_INTERNAL_ERROR 129

[Mrunali]

Hi,

I am doing development on Android platform. I am using Marshmallow device to develop my BLE application. Many times I am getting status code 129 in onServicesDiscovered() method. After that connection gets disconnected. And it goes into infinite loop. I have tested on 3 different devices, In all the devices I found same issue. This is random issue. I searched on many forums but didn't found any solutions yet.

Following are the things that I have tried:

1. Refreshing Gatt cache using reflection.
2. Reinstalling applicaiton.
3. Unpairing and pairing the BLE device.
4. Turning On/Off Bluetooth and wifi. Only restarting the phone is resolving this issue. But I can't ask user to restart phone if application is unable to make connection to BLE device.

What is the root cause of this issue? Is there any sure shot solution for this?

I have checked the Android open source code also for this. I found following URL for status codes.

android.googlesource.com/.../gatt_api.h

Please anyone provide me some hint or solution for this.

Thank you

[FormerMember]

On Nordics github page, you can find example apps with source code. I would recommend you to take a look at one of them and check how service discovery is being done.