custom DFU package

[chladm]

Hi,

I am using nRF51822, SDK 10, SoftDevice S110 v.8

I am strugling with DFU over BLE using custom DFU package.

I am able to flash bootloader and update FW with pregenerated files in SDK using nrf Connect(\dfu\ble_dfu_send_hex\test_images_update_nrf51\dfu_test_app_hrm_s110.zip).

But strugling with custom made package. Update of application is good enough for me. I do not need to update softdevice nor bootloader.

I use these commands in nrfutil:

nrfutil keys generate privatekey.pem
nrfutil pkg generate --hw-version 51 --sd-req 0x64 --application-version 4 --application nrf51422_xxac_s110.hex --key-file privatekey.pem app_dfu_package.zip

DFU fails in both nrf Connect and nRF Toolbox. Error is: disconnected by remote device .

I followed this tutorial: https://devzone.nordicsemi.com/nordic/short-range-guides/b/software-development-kit/posts/setting-up-device-firmware-updatedfu-on-the-nrf5-d

But there is not much about generating of custom DFU packages. I think problem could be signing. (I do not understand it properly and I am probably missing something... I sign the package but how does the application currently running on nRF51822 know right key?) 

Could you please guide me?

Thanks,

Mila

[chladm]

It is enabled.

ble_enable_params.gatts_enable_params.service_changed = IS_SRVC_CHANGED_CHARACT_PRESENT;

IS_SRVC_CHANGED_CHARACT_PRESENT is defined as 1

I tried to comment "dfu_app_peer_data_set()" but do not see any difference. Still not successfull

[Vidar Berg]

Please check if the device advertises in normal app mode or DFU mode after you have received the error. You can usually tell what mode it is based on the device name it advertises. If it's in DFU mode, you can try to re-connect and complete the DFU.

[chladm]

It advertises in DFU mode while trying to do DFU. But keeps failing even after connecting to DFU-Targ

[chladm]

WDT was the issue. I had it configured as "NRF_WDT_BEHAVIOUR_RUN_SLEEP".

I changed it to "NRF_WDT_BEHAVIOUR_PAUSE_SLEEP_HALT" now everything works.

Thanks