nrf5340: How to use xip feature and app image burning to external flash

[Alan.xiao]

Hi,

Now I'm using the matter lock demo to develop products(v2.1.2\nrf\samples\matter\lock), but I find that the demo image is too large, and it is impossible to extend our application with internal flash.

I want to use the xip feature, but I don't know how to use it and change the pm_static or other config,  I didn't get any useful information in this project of machine learning. Is there any detailed documentation on how to use the xip execution.

In the matter lock demo, I have add my application code to it, it is show the follow error 

pls check it and give me helping, thanks!

[AHaug]

Hi,

 Is there any detailed documentation on how to use the xip execution.

You can have a look at this sample: https://github.com/nrfconnect/sdk-nrf/tree/main/tests/modules/mcuboot/direct_xip. The external flash test sample https://github.com/nrfconnect/sdk-nrf/tree/main/tests/modules/mcuboot/external_flash might help you allocate the flash areas. 

In addition we have this documentation: for the nRF5340 with XiP, as well as some more information here on the infocenter, and this page from the MCUboot documentation  

I didn't get any useful information in this project of machine learning.

Could you link to which project you're referring to?

In the matter lock demo, I have add my application code to it, it is show the follow error 

It is as you state, your application is exceeding 1MB and you don't have room for it on the internal flash. You're using 99.97% of the available flash area for your application, which does not leave any room for image size + trailer. 

The lock sample uses statically allocated RAM for DoorLock credentials so it might be worth tuning the parameters like LOCK_NUM_CREDENTIALS_PER_USER or LOCK_NUM_CREDENTIALS to save some memory.

Kind regards,
Andreas