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After DFU Application at DFU_BANK_0_REGION_START is not valid

Marco

Hi,

I have a device with nRF52832 and firmware is composed of Bootloader (BL), softdevice (SD) S132 v2.0.0, application and I am using SDK 11.0.

I have created different firmware updates (BL, SD, App, BL+SD, etc.) in ZIP format (using nrfutil v2.2.0) and when I try to perform a DFU over BLE, I always end up with DFU_BANK_0_REGION_START (Addr: 0x0001C000) with all its content reset to 0xFFFFFFFF.

I use the application setting provided by Nordic support for nRF52 and I merge it together with the other HEX included in the ZIP files:

:020000040007F3    
:10F000000100000000000000FE000000FFFFFFFF05
:00000001FF

I have tried using the ZIP files provided in the SDK 11.0 in the example projects related to DFU usage, but even those fail. With the only difference that with those example ZIP files, actually the files get transferred (using Android app nRF Connect).

This is a sequence of events happening in my system when I try to perform a DFU (I have printed some log messages):

ble_evt_dispatch(): p_ble_evt->header.evt_id 16         -> BLE_GAP_EVT_CONNECTED
ble_evt_dispatch(): p_ble_evt->header.evt_id 18         -> BLE_GAP_EVT_CONN_PARAM_UPDATE
ble_evt_dispatch(): p_ble_evt->header.evt_id 80         -> BLE_GATTS_EVT_WRITE     
ble_evt_dispatch(): p_ble_evt->header.evt_id 81         -> BLE_GATTS_EVT_RW_AUTHORIZE_REQUEST
ble_evt_dispatch(): p_ble_evt->header.evt_id 80         -> BLE_GATTS_EVT_WRITE
bootloader_dfu_update_process() update_status = 4       -> DFU_BANK_0_ERASED
ble_evt_dispatch(): p_ble_evt->header.evt_id 1          -> BLE_EVT_TX_COMPLETE 
ble_evt_dispatch(): p_ble_evt->header.evt_id 81         -> BLE_GATTS_EVT_RW_AUTHORIZE_REQUEST
ble_evt_dispatch(): p_ble_evt->header.evt_id 80         -> BLE_GATTS_EVT_WRITE 
ble_evt_dispatch(): p_ble_evt->header.evt_id 80         -> BLE_GATTS_EVT_WRITE 
ble_evt_dispatch(): p_ble_evt->header.evt_id 80         -> BLE_GATTS_EVT_WRITE 
ble_evt_dispatch(): p_ble_evt->header.evt_id 80         -> BLE_GATTS_EVT_WRITE 
ble_evt_dispatch(): p_ble_evt->header.evt_id 80         -> BLE_GATTS_EVT_WRITE 
ble_evt_dispatch(): p_ble_evt->header.evt_id 80         -> BLE_GATTS_EVT_WRITE 
ble_evt_dispatch(): p_ble_evt->header.evt_id 80         -> BLE_GATTS_EVT_WRITE 
ble_evt_dispatch(): p_ble_evt->header.evt_id 81         -> BLE_GATTS_EVT_RW_AUTHORIZE_REQUEST
ble_evt_dispatch(): p_ble_evt->header.evt_id 1          -> BLE_EVT_TX_COMPLETE
ble_evt_dispatch(): p_ble_evt->header.evt_id 1          -> BLE_EVT_TX_COMPLETE 
ble_evt_dispatch(): p_ble_evt->header.evt_id 81         -> BLE_GATTS_EVT_RW_AUTHORIZE_REQUEST
bootloader_dfu_update_process() update_status = 6       -> DFU_RESET
bootloader_app_is_valid(): EMPTY_FLASH_MASK

Resetting
[After restarting] 

bootloader_app_is_valid(): Application at DFU_BANK_0_REGION_START is not valid!

Do you have any suggestions on how to make it work. I am pretty sure it is just a matter of creating the proper ZIP file and/or incompatibility of SDK/DFU Manager/Android App.

Thank you for the support.

Marco

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  • 0

    Hi Marco,

    If you're using the bootloader from SDK v11.0.0, i.e. Legacy Bootloader, then you have to use nrfutil v0.5.2, which can be downloaded here.

    If you want to flash a combined SoftDevice, Bootloader and Application hex file created with mergehex, where the device jumps to the application without having to perform a OTA update, you have to set the BANK_VALID_APP flag in bootloader_settings.c, i.e. change the line

    uint8_t  m_boot_settings[CODE_PAGE_SIZE]    __attribute__((at(BOOTLOADER_SETTINGS_ADDRESS))) __attribute__((used));

    to the following

    uint8_t  m_boot_settings[CODE_PAGE_SIZE]    __attribute__((at(BOOTLOADER_SETTINGS_ADDRESS))) __attribute__((used)) = {BANK_VALID_APP};

    Please note that this modification must be removed if you plan to update the bootloader.

    -Bjørn

  • 0 in reply to bjorn-spockeli

    I have done additional test and I can provide the following additional log:

    on_dfu_evt(): BLE_DFU_RECEIVE_INIT_DATA
dfu_init_pkt_complete(): state = 4, m_init_packet_length 116
dfu_init_pkt_complete(): next dfu state DFU_STATE_RX_DATA_PKT
ble_dfu_response_send(): calling sd_ble_gatts_hvx (p_dfu->conn_handle = 0x9CBF)
ble_dfu_response_send(): 0x3002

    I am using nRFConnect app to connect to nRF52 while in DFU and to transfer the ZIP file(s). It does not seem to lose connection while performing the DFU. However, I always get error 0x3002 (BLE_ERROR_INVALID_CONN_HANDLE).

Reply
  • 0 in reply to bjorn-spockeli

    I have done additional test and I can provide the following additional log:

    on_dfu_evt(): BLE_DFU_RECEIVE_INIT_DATA
dfu_init_pkt_complete(): state = 4, m_init_packet_length 116
dfu_init_pkt_complete(): next dfu state DFU_STATE_RX_DATA_PKT
ble_dfu_response_send(): calling sd_ble_gatts_hvx (p_dfu->conn_handle = 0x9CBF)
ble_dfu_response_send(): 0x3002

    I am using nRFConnect app to connect to nRF52 while in DFU and to transfer the ZIP file(s). It does not seem to lose connection while performing the DFU. However, I always get error 0x3002 (BLE_ERROR_INVALID_CONN_HANDLE).

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