Hi there, I'm having a problem in the nRF Connect App for Android. Suddenly I get a blue padlock icon after the Generic Attribute and Generic Access lines. E.g "GEneric Attribute (System)" What is this, and how to I get rid of it.. ?

[miktr112]

[Jared]

Hi,

The padlock is indicating that it's non configurable and set by the system. This is not something that can be changed by the user. You can access the services of a peripheral by changing to the client column.

Best regards

Jared 

EDIT: The server tab displays services locally on the phone that can be customized in Navigation Menu -> Configure GATT Server

[miktr112]

I'm not sure I get what you mean.

Using another app, I can connect to the device and list services and characteristics. As well as enable notifications etc.
In nRF Connct I can't even see the heart rate service.

[Jared]

Hi,

Which version of nRF Connect are you using? Do you have an nRF52 or nRF51? Do you experience the same issues if you program the chip with the ble_app_hrs example from the SDK? 

Best regards

Jared 

[miktr112]

I'm using nRF Connect version 4.22.3 on both devices.

I do not have a nRF51 och 52.

I noticed the isse developing a program for the ESP32 using esp idf.
But I have the same issue with any other sensor, Polar H7, Cadense etc..

[Jared]

• Could you share the output in the log in nRF Connect?
• Is auto service discovery enabled? You can check this by going to settings -> connectivity

[miktr112]

I'm not running Auto service discovery.

[Aleksander Nowakowski]

Hello,

Automatic service discovery is enabled by default. If disabled, in Settings -> Connectivity -> Automatic service discovery, you need to initiate service discovery manually, by selecting the menu in top right corner and choosing Discover Services.

BR, Aleksander