GATT ATT MTU ERROR

[Murlidhar Roy]

HW- nrF52832

SDK- nRF5_SDK_15.2.0_9412b96

Description:-

I am using a nRF52832 for my project development. Flashing first time with softdevice and my application hex file it is not giving any error. But after "pyocd erase -t nrf52 --chip" sending this command and again flashing softdevice and application hex file. It is giving error:-

<info> app: Disconnected, reason 22.
<error> app: Fatal

<info> app: Started listening for beacons.

<info> app: GATT ATT MTU on connection 0x0 changed to 247.
<info> peer_manager_handler: Connection security failed: role: Peripheral, conn_handle: 0x0, procedure: Encryption, error: 4102
<warning> peer_manager_handler: Disconnecting conn_handle 0.
<info> app: on_adv_evt: BLE_ADV_EVT_FAST

[ovrebekk]

Hi 

Have you tried to run the debugger, so you can see the stack trace when the fatal error occurs?

This should show you what part of the code causes the error. 

If you run an erase all operation through nrfjprog (nrfjprog -e), will it work?

Best regards
Torbjørn