nRF52 DFU reading current firmware version(buttonless)

RE: nRF52 DFU reading current firmware version(buttonless)

Stefan Tsenev — Thu, 02 Jul 2020 17:21:52 GMT

Thank you.

RE: nRF52 DFU reading current firmware version(buttonless)

Sigurd — Mon, 29 Jun 2020 21:57:46 GMT

[quote userid="90593" url="~/f/nordic-q-a/63077/nrf52-dfu-reading-current-firmware-version-buttonless/257333"]

What is the address in the NVM where the bootloader stores the application version and what is the initial value?

[/quote]

Stored in the bootloader settings page. See memory layout here. You set the value when you generate the bootloader settings page.

I think you can read the app version from the app itself like this:

     nrf_dfu_settings_t my_dfu_settings;
     memcpy(&my_dfu_settings, (uint32_t *)BOOTLOADER_SETTINGS_ADDRESS, sizeof(nrf_dfu_settings_t)); 

     uint32_t my_app_version = my_dfu_settings.app_version;

RE: nRF52 DFU reading current firmware version(buttonless)

Stefan Tsenev — Mon, 29 Jun 2020 10:45:19 GMT

Apologies, It seems that the question is a little bit irrelevant - obviously it is more convenient to maintain and show the app version from within the app itself.

Just for the matter of understanding and reserving this for future use, I would like to modify the question to:

What is the address in the NVM where the bootloader stores the application version and what is the initial value?

Kind regards