NRF52840 Mesh DFU , sdk mesh 3.1

RE: NRF52840 Mesh DFU , sdk mesh 3.1

NOA-BEN — Mon, 28 Jan 2019 10:32:09 GMT

Thank you ,i will test it and share results with you

RE: NRF52840 Mesh DFU , sdk mesh 3.1

NOA-BEN — Mon, 28 Jan 2019 10:29:23 GMT

Example/dfu/src/main.c in the sdk source directory,
I made a change, this is the original SDK,

bank_addr = (uint32_t) (rom_end & FLASH_PAGE_MASK) + FLASH_PAGE_SIZE;

I modified it to:
bank_addr = ((uint32_t)(rom_end & FLASH_PAGE_MASK) + FLASH_PAGE_SIZE)*2;

The second DFU cannot be performed without modification. After the modification is completed, it will be fine.

RE: NRF52840 Mesh DFU , sdk mesh 3.1

Joakim Jakobsen — Fri, 25 Jan 2019 14:05:28 GMT

Just talked to one of our Mesh developers.

To enter Bootloader DFU mode, you can run without an application, or you can call the nrf_mesh_dfu_jump_to_bootloader() in nrf_mesh_dfu.h.

When you receive the NEW_FIRMWARE event, you can call that function. Then the bootloader will run for 10 sec. and switch back if nothing happens.

Best regards,
Joakim

RE: NRF52840 Mesh DFU , sdk mesh 3.1

Joakim Jakobsen — Fri, 25 Jan 2019 12:55:17 GMT

Hi.

[quote user=""]However, the second DFU cannot be performed after this firmware update is completed.[/quote]

Maybe you could elaborate a little bit on what is happening here. Are you seeing any errors or information about why the DFU was unsuccessful?

I believe that this is caused by the Blinky example not supporting DFU. So after you update to the Blinky FW, you are not able to update it again.

[quote user=""]I tried to select this updated firmware as the firmware compiled by the example/dfu routine and increased the bank_addr address by a factor of 2.[/quote]

I'm not quite sure what you mean by this? Could you elaborate?

[quote user=""]How can I select bootloader DFU mode?[/quote]

It should be possible to do Bootloader DFU. However, you will need to enter bootloader mode, and I assume that would require a button press.
I will ask our developers about how to enter bootloader DFU, as I'm not 100% sure on how to do it myself.

Best regards,
Joakim.