Battery Service Notification

RE: Battery Service Notification

Kenneth — Thu, 03 Oct 2024 16:37:45 GMT

Also, if the device support bonding, maybe delete the peripheral from the android phone, do a full power cycle of the phone to ensure all BT cache of the device is removed.

Kenneth

RE: Battery Service Notification

Kenneth — Thu, 03 Oct 2024 16:35:56 GMT

Hello,

Sounds to me like a problem in the custom android application, but what you can do is connect to the peripheral using the nRF Connect for Desktop Bluetooth Low Energy app, then you can take a screenshot of the full services and characteristics of the peripheral, maybe something is wrong that is difficult to see without a clear overview:
https://docs.nordicsemi.com/bundle/nrf-connect-ble/page/service_discovery.html

Kenneth

RE: Battery Service Notification

bhargav_gondaliya — Thu, 03 Oct 2024 13:55:05 GMT

Thanks Kenneth for Reply.

I have already enabled CONFIG_BT_BAS=y. I don't Know why blvl_ccc_cfg_changed is not called automatically. It is called when I enable notification manually from nrf connect app.

Is there any solution available? from software side like config or api who enable notification forcefully?

RE: Battery Service Notification

Kenneth — Thu, 03 Oct 2024 13:40:59 GMT

Hello,

Normally the only thing you need to do to implement the battery service is to set a kconfig flag:
https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/kconfig/index.html#CONFIG_BT_BAS

You can find an example on how to send battery notifications here:
\zephyr\samples\bluetooth\peripheral\src\main.c

If this doesn't work natively in Android, but using nRF Connect app, then possible you have tried to manually setup battery service, and maybe not done it correctly. So try the above if that works.

Kenneth