Controlling GPIO within nrfjprog

[Jon]

Hello,

I have a product with QSPI flash that I would like to use nrfjprog to program the flash part. However, the QSPI flash's VCC is controlled (via a FET) from a GPIO line. I am looking for a way to have nrfjprog enable the GPIO line before attempting to access the QSPI flash (so that the flash is powered up). Is there a way from qspiinit.ini to do this?

Thanks,

Jon

[Jon]

It seems to work okay and verifies ok, but understanding of the part might reset for some reason mid programming is important just in case it might happen occasionally. The main issue with the workaround I do is that it's a bit slow since I have to call nrfjprog several times.

[Vidar Berg]

I have created a feature request for this internally so we will hopefully get official support for this in a future nrfjprog release.

Regarding resets during programming, feedback from the team is that in general you cannot expected the device not to be reset during programming. A reset will for instance be required if there are is any runtime memory block protection enabled on the device (BPROT, ACL, SPU, MPU etc.), which may be the case if you are not programming a blank chip.