Custom DFU Process

RE: Custom DFU Process

Vidar Berg — Mon, 07 Dec 2020 08:03:41 GMT

I made an example that handles DFU in the application layer a while ago which you can find here: https://devzone.nordicsemi.com/f/nordic-q-a/46994/background-dfu-application-source-code/187534#187534. But note that's it's using the existing SDK DFU modules to receive and store the init packet.

RE: Custom DFU Process

wrani — Fri, 04 Dec 2020 19:48:08 GMT

Thanks, Any example I can use as a reference for using init_command in an application ?

RE: Custom DFU Process

Vidar Berg — Fri, 04 Dec 2020 12:01:24 GMT

You need to change the implementation above so that instead of updating .bank0/1 directly, you store the init_command. The bootloader will take of updating the other fields during the FW activation process afterwards.

RE: Custom DFU Process

wrani — Thu, 03 Dec 2020 13:16:31 GMT

Thanks.

So once I'll set NRF_BL_DFU_ALLOW_UPDATE_FROM_APP , how to I change my code above to allow DFU successful completion ?

RE: Custom DFU Process

Vidar Berg — Thu, 03 Dec 2020 13:10:13 GMT

Hi,

This implementation is made to limit what parameters the app is allowed to change inside the settings page. If your bootloader is built with NRF_BL_DFU_ALLOW_UPDATE_FROM_APP you are allowed to change the fields highlighted below.

Does your custom DFU process include the init command like in our DFU solution? If not, I'm afraid you will have to modify the bootloader module as you have done already.