NRF5340 network core DFU with external flash

RE: NRF5340 network core DFU with external flash

JONATHAN LL — Tue, 05 Jul 2022 13:06:48 GMT

There is a patch here yes: https://github.com/nrfconnect/sdk-mcuboot/pull/197/commits/b628d6e238bb15eae06a9582fb19b00ea4990e13
and this is the discution. https://github.com/nrfconnect/sdk-mcuboot/pull/197

Regards,
Jonathan

RE: NRF5340 network core DFU with external flash

ericyy — Thu, 30 Jun 2022 00:42:21 GMT

Here's the patch I found:

GitHub - aiminhua/ncs_samples: nRF connect SDK samples

RE: NRF5340 network core DFU with external flash

KRich — Wed, 29 Jun 2022 13:36:11 GMT

Hi ericyy,

Could you provide the patch or a pointer to it. I'm having the same issue on my project. JONATHAN LL is there any update from Nordic about if/when this issue will be addressed?

RE: NRF5340 network core DFU with external flash

ericyy — Fri, 04 Mar 2022 07:32:47 GMT

Finally get the problem fix by found and applying a patch for the "loader.c", it's strange that this patch doesn't exist even in the new version of NCS...

RE: NRF5340 network core DFU with external flash

chcnuhk — Tue, 22 Feb 2022 08:13:06 GMT

Hi Nordic guy,

Please find attachment.

devzone.nordicsemi.com/.../7457.peripheral_5F00_uart.zip

Hope to get the feedback soon.

RE: NRF5340 network core DFU with external flash

ericyy — Tue, 22 Feb 2022 02:40:58 GMT

Sorry but any idea on this problem? We cannot afford to store the image into the internal flash...

RE: NRF5340 network core DFU with external flash

ericyy — Mon, 17 Jan 2022 07:18:17 GMT

I'm not sure which code you want because that loader.c is come from the NCS. Anyway, I amend the "peripheral_uart" sample project to use the external flash as FW storage, this is base on the 5340DK board.

www.dropbox.com/.../peripheral_uart.zip

I add some lines in main.c, so it will write a simple header/trailer to the on board flash, so the bootloader should "think" the FW image is valid (but I didn't include the whole image to it so the SHA verification should failed, this is good because if so, it will try to write to the internal flash, which will corrupt my APP). The header/trailer is comes from the "net_core_app_update.bin" as you can see from the image's vector table.

You can set a breakpoint in the "boot_validated_swap_type" of loader.c, you should able to see that it want to get the "reset_addr" from the image, to determine if this APP or NET, but failed, because it even cannot get the correct IMAGE_MAGIC due to the incorrect pointer, as I mentioned in this post.

PS, I'm using the NCS v1.6.1.

RE: NRF5340 network core DFU with external flash

JONATHAN LL — Fri, 14 Jan 2022 15:40:16 GMT

Hi,

Cant relay see what's wrong, could you share the entire code?

Regards,
Jonathan