How to generate Hex file from net and app project for nRF 5340?

[Carl Sun]

Hello,

In nRF5340 project, I have two projects, one is for net core, the other is for app core. I use SEGGER to build these two projects, flash the images into the development board. Net core is a elf file and app core is a hex file. There is no problem.

Now I want to send the files to my friends and ask them to flash it in to their own development board. They can use nRF connect Programmer to load the hex file and write it into the board, but the programmer does not support to write elf file. What should I do ?

It seems that I have to use some tools to build the elf file and hex file into one big hex file?

Thanks,

Carl.

[Heidi]

Hi!

To get one combined hex file, you need to build these images as a multi-image build by including the network core image as a child image in the image for the application core (see Defining and enabling a child image and Single image vs. multi-image build).

Let me know if you need some more details and I'd be happy to help you out!

Best regards,

Heidi