The ble_evt_dispatch function does not execute.

[Jim]

Hi! 

I use softdevice3.0.0 , SDK12.1.0, Keil IDE, PCA10040 Development board, 

I am going to create a multilink_central_NUS project using the ble_app_multilink_central example.

Immediately after turning on the power, it seems to work well.
However, after an irregular period of time, the softdevice seems to stop.

For testing, we made a periodic timer and toggled the LED every 5 seconds.
This confirmed that timer, uart, and gpio are working normally.
The ble_evt_dispatch function is not executed.
Is there a bug found for this?

If you need my project to check, I am willing to send you a project.

[Hung Bui]

Hi,

What exactly you observed when the softdevice stopped ? Have you found the issue on the central side or the peripheral side ?

How long did it take for the issue to appear ? Could you record a sniffer trace ?

[Jim]

When Softdevice stopped, I noticed that only Bluetooth not worked.
After debugging with the Keil IDE, the nRF52832 was still running the while loop in the main loop.
It will take an average of 1 hour for the problem to appear.
I do not know how to track sniffer since I have not tried it.

[Hung Bui]

Have you check if your peripheral gets back to advertising ? Could you check the disconnect reason (when BLE_GAP_EVT_DISCONNECTED event happens) 

Please try to use the sniffer and send us the trace. But you need to make sure you managed to capture the connection. 

[Jim]

Yes, I checked it!

My peripheral is advertising after disconnect. 

Disconnect reason is 0x3E, 0x13.

If nRF52832 do not try to connect, the scan function will not stop.

[Hung Bui]

If it's 0x13 it means BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION, the peer device decided to disconnect. 

If it's 0x3E it means BLE_HCI_CONN_FAILED_TO_BE_ESTABLISHED, the connection request packet is not receive by the peer side. 

Please try to capture a sniffer trace.