Can nRF5340 programming via USB ninterface ?

[Mardin]

Hi Sir

We have a project with nRF5340, 

Coz our product will be a smart watch, we will need to re-programming our product after full assemble in production line,

So, we are looking for the feasibility to programming nRF5340 via USB port,

Anyone has experience on it ? 

Thanks ...

Mardin

[ovrebekk]

Hi Mardin

It should be possible to set up the USB in CDC ACM mode, and use this to load a new image into the flash that can then be updated using mcuboot. 

This article discusses how to do this on the nRF52840. 

Maybe you can start by giving that a read?
If anything is unclear after reading the article just let me know, and I will do my best to help. 

Best regards
Torbjørn