nrf5340 QSPI flash programming via SWD

[tcube]

Hello,

We would like to program the external flash connected to the nRF5340 via SWD during manufacturing.

Is this possible? Do you have any documentation that explains how to do it?

Thank you,

[Håkon Alseth]

Hi,

 

If your external flash is connected via QSPI with the dedicated pins as shown here under "Recommend usage":

https://docs.nordicsemi.com/bundle/ps_nrf5340/page/chapters/pin.html

 

Then you shall be able to use nrfjprog to program the QSPI:

nrfjprog --program <qspi_content.hex> --verify -f nrf53

 

This assumes that the input .hex file is offset'ed to the XIP area:

https://docs.nordicsemi.com/bundle/ps_nrf5340/page/chapters/memory/appmem.html

 

You can then use nrfjprog --readqspi readback.hex -f nrf53 to verify the written content.

 

Kind regards,

Håkon