nrf5340 Programming Network Flash from Application Core

[emag nioj]

Hello, i have a routine that updates the firmware in Application Core flash. It works erasing the flash and receiving the srec data with TWI slave (waiting for USBD).

Now i would like to update the flash of the Network core (in hold), but from App Core it seems not accessible.

Is it possible to write the network core flash from the App Core in nrF5340?

if it's possible how to configure it?

Maybe i need to change to NRF_NMVC_NS when in the network flash address range?

Thank you in advance!

emag

[Hakon]

Hello,

there is a DFU sample for updating firmware on the network core. Have you looked at http://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.4.0/nrf/samples/nrf5340/netboot/README.html#nc-bootloader ?

[emag nioj]

Thank you Hakon, i'll take a look, but for now i solved using a shared area and the App Core  sends "cmd","address","data","size" to the Network core providing the Flash programming.