connectless CTE TX/RX problem

[loquat]

I am testing connectless CTE RX/TX.
A strange behavior is occurring.
Please advice me.

・connectless CTE TX
     nRF52833-DK + nRF Connect SDK + connectless CTE TX (almost same as sample)
・connectless CTE RX
   nRF52833-DK + nRF Connect SDK + My Application (customised connectless CTE RX)
   Scan doesn't stop after sync_create().

1. CTE is received normally for several tens of minutes.
2. Suddenly reception on the connectless CTE RX side stops. (stop scan)
3. If you start advertising while reception is stopped, you will be able to receive it.
4. When advertising stops, reception also stops. (stop scan)
5. If the connectless CTE TX is operating (transmitting) while advertising is running, reception will not stop even if advertising stops.

Is there anything we can investigate?

[Simonr]

Hi

I'm struggling to understand what exactly the issue is here. Is it the advertising ending that also stops the scanning in this scenario? Or does it stop unexpected while the advertiser is still scanning? When you say "Calling bt_le_scan_stop() in this state will not return an error." that means it is successful, correct?

There should not be an issue in the Bluetooth stack here to my knowledge. 

[loquat]

The problem is that after a long period of time, the scan stops even though bt_le_scan_stop() has not been called.
that the scan stopped
1. advertising report is not called
2. When measuring the current consumption with PPK, the current consumption suddenly drops.
confirmed by.

[loquat]

Upload sample code.
test method:
Write TX/RX to nRF52833-DK
On the RX side, enable variables to be displayed using a debugger, etc.
TX side operation
1. Repeat power on-off every few seconds
2. Repeat power on and off for about 10 seconds
3. Repeated power on-off for several minutes
It's stop receiving by doing this.
However, the frequency of occurrence is very low.
If the problem does not occur, restart the RX side and continue the test, and the problem may occur.

df_tx.zipdf_rx.zip