Unable to read encrypted characteristics from certain Android devices

[Doomkin]

Hello everybody,

I'm developing a webapp that need to communicate with my BLE device, an nRF52 DK Board.

The firmware has some open and some encrypted characteristics.

The app is developer though Ionic, a crossplatform framework to build both android and iOS apps with one codebase.

Right now, I'm using this plugin to handle connection and operations via BLE: https://github.com/don/cordova-plugin-ble-central

Pretty much everything works fine, I'm using the setPin method to read/write encrypted characteristics.

Although, on most of Huawei devices, this doesn't work.

It connects successfully, but as soon as I try to read an encrypted characteristic, it fails with status=137

Has anybody encountered same issue and been able to solve it?

Thanks!

[Amanda Hsieh]

Hi Kevin, 

Here is a list of possible Gatt errors that might occur. Our engineer thinks this device requires to be bonded. However, we don't know how this third-party library behaves. I would leave the questions to other experts on this forum.

I think you also could file an issue or create a pull request to that repo as the statement in the feedback section.

-Amanda H.