RE: Buttonless DFU

Diego — Mon, 29 Apr 2019 18:32:25 GMT

I updated the answer. Hope that helps.

RE: Buttonless DFU

gaminn — Mon, 29 Apr 2019 18:22:13 GMT

Hi Diego and thank you for your answer. Meanwhile, I was editing my post and I added 3rd part to my question. I would like to ask you to reply to it also if you know the answer. Thank you.

RE: Buttonless DFU

Diego — Mon, 29 Apr 2019 18:13:06 GMT

1) You need to generate the settings to tell the bootloader that there is an app available to run. To do this run something like the following

nrfutil settings generate --family NRF52 --application $(OUTPUT_DIRECTORY)/nrf52832_xxaa.hex
--application-version 2 --bootloader-version 1 --bl-settings-version 1 $(OUTPUT_DIRECTORY)/boot_settings.hex

Then you will need to merge the boot_settings.hex with the softdevice, the bootloader and the application hex. Using mergehex.

2) It is what you put in the --aplication-version flag when generating the settings.

3) You need to set the NRF_DFU_BLE_REQUIRES_BONDS flag to 1 in sdk_config.h in the bootloader project. This will require the device to be bonded with the peer to perform the firmware update.