ble_advertising_init returns error 7 when advertising timeout is set to zero

[clockis]

Hello,

I am using SDK 17.1.0 and using the code from the ble_app_uart example on a custom board to test BLE connectivity, when I load the example as is there are no issues but when I change the APP_ADV_DURATION parameter to zero so I can advertise indefinitely the ble_advertising_init function returns error 7 and the example hangs. When I use any value over zero and less than 18000 the example works correctly but any values outside this range the application hangs.

What could be the reason for this?

Thank you very much for your time.

Best regards

[Karl Ylvisaker]

Hello,

It is not allowed to combine the flag for limited discoverability - which is meant to signify that the advertisings will stop shortly, and thus needs to be prioritized by a scanner - with an indefinite timeout. Check your code to confirm that you are not using BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE in your code when you attempt to use indefinite advertising timeout.
Try instead with BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE and see if it resolves your issues.

Best regards,
Karl

[clockis]

Thank you very much for your immediate response, that was indeed the issue, when I changed it to BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE it worked as expected! Thank you very much!

[Karl Ylvisaker]

No problem at all, clockis - I am happy to hear that this resolved your issue!

Please do not hesitate to open another ticket if you should encounter any other issues or questions in the future.

Good luck with your development!

Best regards,
Karl