Battery Service (BAS) never receiving notification

RE: Battery Service (BAS) never receiving notification

Jørgen Holmefjord — Wed, 14 Oct 2020 15:04:46 GMT

See my comment in your private ticket.

RE: Battery Service (BAS) never receiving notification

xhr0428 — Wed, 14 Oct 2020 06:22:53 GMT

I printed out the error code of ble_bas_battery_level_update. It shows error code 8 for the first time the battery update function is called. All the following prints show error code 0.

The application was made long time ago with this SDK. I'm revisiting to address some issues.

Battery update works with ble_app_proximity example.

I opened a private case to upload my codes. Case ID is 258031. Please take a look if possible.

Thanks

RE: Battery Service (BAS) never receiving notification

Jørgen Holmefjord — Tue, 13 Oct 2020 08:45:12 GMT

Looks like the notifications are not sent to the phone at all then. Are you sure that the call to ble_bas_battery_level_update() always return NRF_SUCCESS?

Any specific reasons you are using such an old SDK for a nRF52 series project? Is the battery service working as expected if you run the ble_app_proximity example?

RE: Battery Service (BAS) never receiving notification

xhr0428 — Fri, 09 Oct 2020 15:45:00 GMT

Hi, I exported sniffer packets in the csv file and text file. I removed some packets in the beginning for scanning, connection, service discovery etc. It starts with enabling battery service notification. I only see empty PDUs during the process.

devzone.nordicsemi.com/.../wireshark.txt

devzone.nordicsemi.com/.../wireshark.csv

RE: Battery Service (BAS) never receiving notification

Jørgen Holmefjord — Fri, 09 Oct 2020 10:53:25 GMT

Can you provide a sniffer trace of the on-air traffic between the phone and the board? You can use our nRF Sniffer for Bluetooth LE for doing the sniffer capture.

RE: Battery Service (BAS) never receiving notification

xhr0428 — Thu, 08 Oct 2020 15:28:37 GMT

Hi Jørgen,

Error code is 0, so that's NRF_SUCCESS I believe.

I set the initial value to be 50% and it returns 78% when I read the characteristics, so it is updating according to the battery level.

Thanks

RE: Battery Service (BAS) never receiving notification

Jørgen Holmefjord — Thu, 08 Oct 2020 11:07:38 GMT

Hi,

Do you get any error codes returned from the call to ble_bas_battery_level_update()?

When you read the characteristics, is it updating according to the battery level, or is it always static at the initial value?

Best regards,
Jørgen