Hi,
I managed to do a DFU with an application on a nRF52820. Now I wanted to test if I can also update the softdevice. For this I read the following article:
infocenter.nordicsemi.com/index.jsp
Under the point "Single-bank updates" I saw that with a new softdevice the application area is deleted, and the softdevice is first copied into the application area and then copied into its destinated area. Since in my nRF52820 is not enough space for a softdevice in the application area, I wanted to ask whether a DFU of the softdevice is possible at all?
This is a screenshot of my memory usage:
pink area: bootloader
green area: application
blue/orange area: softdevice and MBR
Edit from 2.9.2022:
If I set the macro NRF_DFU_SINGLE_BANK_APP_UPDATES to 1, it does not work, because there is not enough space according to the log (is attached to this post). I generated the softdevice DFU package with the following command:
nrfutil pkg generate --hw-version 52 --sd-req 0x100 --softdevice s140_nrf52_7.2.0_softdevice.hex --key-file private.pem app_dfu_package_sd_s140.zip
00> <info> app Inside main 00> <debug> app: In nrf_bootloader_init 00> <debug> nrf_dfu_settings: Calling nrf_dfu_settings_init()... 00> <debug> nrf_dfu_flash: Initializing nrf_fstorage_nvmc backend. 00> <debug> nrf_dfu_settings: Using settings page. 00> <debug> nrf_dfu_settings: Copying forbidden parts from backup page. 00> <debug> nrf_dfu_settings: Destination settings are identical to source, write not needed. Skipping. 00> <info> nrf_dfu_settings: Backing up settings page to address 0x3E000. 00> <debug> nrf_dfu_settings: Destination settings are identical to source, write not needed. Skipping. 00> <debug> app: Enter nrf_bootloader_fw_activate 00> <info> app: No firmware to activate. 00> <info> app: Boot validation failed. No valid app to boot. 00> <debug> app: DFU mode because app is not valid. 00> <info> nrf_bootloader_wdt: WDT is not enabled 00> <debug> app: in weak nrf_dfu_init_user 00> <debug> app: timer_stop (0x20002A58) 00> <debug> app: timer_activate (0x20002A58) 00> <info> app: Entering DFU mode. 00> <debug> app: dfu: NRF_DFU_EVT_DFU_INITIALIZED 00> <debug> app: Initializing transports (found: 1) 00> <debug> nrf_dfu_serial_uart: serial_dfu_transport_init() 00> <debug> nrf_dfu_serial_uart: serial_dfu_transport_init() completed 00> <debug> app: dfu: NRF_DFU_EVT_TRANSPORT_ACTIVATED 00> <debug> nrf_dfu_flash: Initializing nrf_fstorage_nvmc backend. 00> <debug> app: Enter main loop 00> <debug> nrf_dfu_serial: Received ping 1 00> <info> nrf_dfu_serial_uart: Allocated buffer 200041C0 00> <debug> nrf_dfu_req_handler: Handle NRF_DFU_OP_PING 00> <debug> nrf_dfu_req_handler: Request handling complete. Result: 0x1 00> <debug> nrf_dfu_serial: Sending Response: [0x9, 0x1] 00> <debug> nrf_dfu_serial: Set receipt notif target: 0 00> <info> nrf_dfu_serial_uart: Allocated buffer 200041C0 00> <debug> nrf_dfu_req_handler: Handle NRF_DFU_OP_RECEIPT_NOTIF_SET 00> <debug> nrf_dfu_req_handler: Request handling complete. Result: 0x1 00> <debug> nrf_dfu_serial: Sending Response: [0x2, 0x1] 00> <debug> nrf_dfu_serial: Received serial mtu 00> <info> nrf_dfu_serial_uart: Allocated buffer 200041C0 00> <debug> nrf_dfu_req_handler: Handle NRF_DFU_OP_MTU_GET 00> <debug> nrf_dfu_req_handler: Request handling complete. Result: 0x1 00> <debug> nrf_dfu_serial: Sending Response: [0x7, 0x1] 00> <info> nrf_dfu_serial_uart: Allocated buffer 200041C0 00> <debug> nrf_dfu_req_handler: Handle NRF_DFU_OP_OBJECT_SELECT (command) 00> <debug> nrf_dfu_req_handler: Request handling complete. Result: 0x1 00> <debug> nrf_dfu_serial: Sending Response: [0x6, 0x1] 00> <debug> app: Shutting down transports (found: 1) 00> <info> nrf_dfu_serial_uart: Allocated buffer 200041C0 00> <debug> nrf_dfu_req_handler: Handle NRF_DFU_OP_OBJECT_CREATE (command) 00> <debug> app: timer_stop (0x20002A58) 00> <debug> app: timer_activate (0x20002A58) 00> <debug> app: dfu: NRF_DFU_EVT_DFU_STARTED 00> <debug> nrf_dfu_req_handler: Request handling complete. Result: 0x1 00> <debug> nrf_dfu_serial: Sending Response: [0x1, 0x1] 00> <info> nrf_dfu_serial_uart: Allocated buffer 20004244 00> <debug> nrf_dfu_req_handler: Handle NRF_DFU_OP_OBJECT_WRITE (command) 00> <debug> nrf_dfu_req_handler: Request handling complete. Result: 0x1 00> <debug> nrf_dfu_serial: Sending Response: [0x3, 0x1] 00> <info> nrf_dfu_serial_uart: Allocated buffer 200041C0 00> <debug> nrf_dfu_req_handler: Handle NRF_DFU_OP_OBJECT_WRITE (command) 00> <debug> nrf_dfu_req_handler: Request handling complete. Result: 0x1 00> <debug> nrf_dfu_serial: Sending Response: [0x3, 0x1] 00> <info> nrf_dfu_serial_uart: Allocated buffer 20004244 00> <debug> nrf_dfu_req_handler: Handle NRF_DFU_OP_OBJECT_WRITE (command) 00> <debug> nrf_dfu_req_handler: Request handling complete. Result: 0x1 00> <debug> nrf_dfu_serial: Sending Response: [0x3, 0x1] 00> <info> nrf_dfu_serial_uart: Allocated buffer 20004244 00> <debug> nrf_dfu_req_handler: Handle NRF_DFU_OP_CRC_GET (command) 00> <debug> nrf_dfu_req_handler: Request handling complete. Result: 0x1 00> <debug> nrf_dfu_serial: Sending Response: [0x3, 0x1] 00> <info> nrf_dfu_serial_uart: Allocated buffer 20004244 00> <debug> nrf_dfu_req_handler: Handle NRF_DFU_OP_OBJECT_EXECUTE (command) 00> <debug> nrf_dfu_validation: PB: Init packet data len: 68 00> <info> nrf_dfu_validation: Signature required. Checking signature. 00> <info> nrf_dfu_validation: Calculating hash (len: 68) 00> <info> nrf_dfu_validation: Verify signature 00> <info> nrf_dfu_validation: Image verified 00> <debug> app: Enter nrf_dfu_cache_prepare() 00> <debug> app: required_size: 0x25634. 00> <debug> app: single_bank: true. 00> <debug> app: keep_app: false. 00> <debug> app: keep_softdevice: true. 00> <debug> app: SD_PRESENT: true. 00> <debug> app: Bank contents: 00> <debug> app: Bank 0 code: 0x00: Size: 0x0 00> <debug> app: Bank 1 code: 0x00: Size: 0x0 00> <debug> app: pass: 0. 00> <debug> app: cache_address: 0x27000. 00> <debug> app: cache_too_small: true. 00> <debug> app: keep_firmware: false. 00> <debug> app: delete_more: true. 00> <debug> app: pass: 1. 00> <debug> app: cache_address: 0x27000. 00> <debug> app: cache_too_small: true. 00> <debug> app: keep_firmware: true. 00> <debug> app: delete_more: true. 00> <warning> app: Aborting. Cannot fit new firmware on device 00> <error> nrf_dfu_validation: Can't find room for update 00> <debug> nrf_dfu_req_handler: Request handling complete. Result: 0x4 00> <warning> nrf_dfu_serial: DFU request completed with result: 0x4 00> <debug> nrf_dfu_serial: Sending Response: [0x4, 0x4] 00> <debug> app: dfu: NRF_DFU_EVT_DFU_FAILED
How can I perform the DFU so that the existing softdevice is deleted?
BR
Louis
