For some reason the ble_app_hrs example from SDK 15 disconnects after around 30-40 seconds (every time) and shows this error in the RTT logger: " 0> <info> app: Disconnected, reason 34."
However, it does not happen with the ble_app_hrs example from SDK 12.3.
The only changes I made to both examples is set the internal LF clock source to RC because my custom PCB does not have external 32 KHz clock.
In the ble_app_hrs from SDK 15 I did this:
And in the ble_app_hrs from SDK 12.3 I added 3 lines to ble_stack_init():
I redownloaded both SDK 12.3 and SDK 15 to make sure I didn't change anything else, but this problem still happens.