PeerManager error (error: 139)

[takashina hiroki]

I have a question about PeerManager.

SDK: 15.3.0
example: ble_app_multirole_lesc (I changed the source from the sample)
using device: EYSHJNZWZ (nRF52832)
connection device: Android (Bluetooth v5.0)

When trying to connect with LESC security level using PeerManager, the following error occurred.
Please tell me the cause.

<info> peer_manager_handler: Connection security failed: role: Peripheral, conn_handle: 0x2, procedure: Bonding, error: 139
<warning> peer_manager_handler: Disconnecting conn_handle 2.

I know that this error means "BLE_GAP_SEC_STATUS_DHKEY_FAILURE".
The connection partner supports pairing.
I confirmed that I could connect many times.
However, this error may occur.
Also, after this error occurs, the same error will occur no matter how many times you try to connect.
This error does not occur after reset.

[Edvin]

takashina hiroki said:

Can nRF Sniffer run on this device?

 No. Sorry.

 

takashina hiroki said:

If you delete the entire flash, other devices' bonding information will also disappear.
Therefore, this method is not preferable.

 This is not a permanent solution, but for debugging, and to find the cause of the issue.