DEADBEAF from src\ll_ctrl.s0.c

[SHTILL]

I use softdevice s110 7.3.0 and SDK version 7.2.

Some times softdevice call app_error_handler with: error_code 0xDEADBEEF line num - 990 file_name - src\ll_ctrl.s0.c

I can't recognize why that happens. softdevice call app_error_handler after i try to disconnect form device and delete bond information.

This is my code:

err_code = dm_device_delete_all(&m_app_handle);	 
APP_ERROR_CHECK(err_code);

if( m_conn_handle == BLE_CONN_HANDLE_INVALID )return NRF_SUCCESS;

err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);	

if( err_code != NRF_ERROR_INVALID_STATE )
{
	APP_ERROR_CHECK(err_code);
}
return NRF_SUCCESS;

[Susheel Nuguru]

I will try it out, which version of MCP did you use

[SHTILL]

Version 3.9.0.6

[Susheel Nuguru]

[10:54:54.1] ConnectToDevice()

[10:54:54.1] SERVER: Received packet <HciEvent: eventCode=0x05> - <HciEvent: eventCode=0x05>

[10:54:54.1] ----------------------------

[10:54:54.1] Connected to device

[10:54:54.1] Role: 0

[10:54:54.1] PeerAddressType: 1

[10:54:54.1] PeerAddress (MSB): E241E8318B99

[10:54:54.1] Connection Interval: 20.0ms

[10:54:54.1] Connection Latency: 0

[10:54:54.1] Supervision Timeout: 3000ms

[10:54:54.1] Clock Accuracy: (1)

[10:54:54.1] ----------------------------

[10:54:54.1] Connected to E241E8318B99

[10:54:59.1] Received Connection Parameter Update Request

[10:54:59.1] Automatic connection update accept.

[10:54:59.1] SendConnectionUpdateResponse(2, 0)

[10:54:59.2] UpdateConnParams(90, 6, 30000)

[10:54:59.1] ConnectionParameterUpdateResponse sent

[10:54:59.4] Connection Parameters Updated. ConnInterval:90ms, SlaveLatency:6, SupervisionTimeout:30000ms

[10:55:28.1] SendConnectionUpdateResponse(2, 0)

[10:55:28.2] UpdateConnParams(1450, 6, 3000)

[10:55:28.1] ConnectionParameterUpdateResponse sent

[10:55:29.5] Connection Parameters Updated. ConnInterval:1450ms, SlaveLatency:6, SupervisionTimeout:3000ms

[10:55:44.6] UpdateConnParams(90, 6, 3000)

[10:55:45.7] DisconnectFromDevice()

[10:55:48.3] Lost connection to device. Reason: BTLE_LOCAL_HOST_TERMINATED_CONNECTION

[10:55:48.4] SERVER: Received packet <HciEvent: eventCode=0x0A> - <HciEvent: eventCode=0x0A>

[10:55:48.4] SERVER: Received Link Loss

[10:55:48.4] Disconnected

I tried even with 10 seconds connection param update and then sending connection param update to 90ms and discconnect before the update. It worked ok

[Susheel Nuguru]

BTW, exactly same configuration like yours except that i used BLE_app_hids_keyboard example and changed its min and max connection values

[SHTILL]

Who initiate Connection Update Procedure? Master Controll Panel or device? Log which I posted is concerned to situation when Connection Update Procedure is initiated by device. And in my opinion stange behaviour related with device's work, not MCP.