Error (0x8): GATT INSUF AUTHORIZATION when attempting to connect to nRF51822 from MCP Android app; Proximity example does not work

[Mike Yeung]

Hi, I'm attempting to run the Proximity example ("ble_app_proximity_pca10028_s130") on my nRF51822 dev kit using the S130 SoftDevice. I am able to connect to the dev kit ("Nordic_Prox") from the Master Control Panel Android app but am not able to bond with it. When attempting to bond, I get an "0x8: GATT INSUF AUTHORIZATION" error and lose connection to the device.

Moreover, when attempting to connect to the dev kit using the nRF Toolbox app on iOS (tried two iPhone Xes and an iPhone SE), I am able to connect but the alarm immediately triggers even when I am well within Bluetooth range. The connection appears to be dropping and reconnecting repeatedly.

I did not modify the source code at all; what could be the issue here? I did have to change some build parameters in order to get the project building using SEGGER Embedded Studio on macOS, though I don't think that would impact the application's functionality.

[ketil]

Hi Mike,

Could you try with the nRF Connect for Android app or the nRF Toolbox for Android app and see if that works?

Ketil

[Mike Yeung]

I tried with both, no difference. The example worked perfectly with a NRF52 out of the box...

[ketil]

Hi,

It is possible that you are missing some essential steps for configuring SEGGER Embedded Studio. Could you please take a look at this blog post and verify that you have made all the necessary modifications?

Ketil