DFU Update file size

[Andreas48752]

Hello,

I am using a modifed Secure bootloader example in my NRF52840. I would like to show the user an update progress bar on the device screen while loading BLE DFU update (app and maybe softdevice).

But I don't know how to get the totalal update size? I am using a "dfu_observer" where I try:

static void dfu_observer(nrf_dfu_evt_type_t evt_type) {
    uint32_t size;
    uint32_t offset;
  
    switch (evt_type) {
    case NRF_DFU_EVT_OBJECT_RECEIVED:
        size = s_dfu_settings.progress.data_object_size;
        offset = s_dfu_settings.progress.firmware_image_offset;
    }
}

But data_object size is always 0?

How can I keep track of the progress?

Thanks for hints and answers!

Andreas

[Elfving]

Hey again Andreas!

Once again, I will have to get back to you on this. Due to the holidays you might have to expect both limited help and slower responses on DevZone.

Best regards,

Elfving

[Andreas48752]

Hello Elfving,

In meanwhile I found how to track the update file size.

"m_firmware_size_req" in  "nrf_dfu_req_handler.c" should do the trick.

Best regards,

Andreas

[Elfving]

Great! And thanks for sharing your solution here!

Best regards,

Elfving