nrfjprog clarification --eraseall vs --chiperase vs --recover

[erickcinco]

Hello,

Is calling --eraseall before calling --program the same as combining --program with --chiperase?

Does --recover erase all the areas that --eraseall and --chiperase erase plus the readback protection registers?

Thank you!

[Marte Myrvold]

Hi,

The different nrfjprog commands can be found here.

From the documentation: --eraseall erases all user available program flash memory and the UICR page, and --chiperae erases all the available non-volatile memory and UICR. So to answer your question, running --eraseall before --program is the same as when you run --program with --chiperase. The only difference between them is that --chiperase can be combined with --program.

Yes, --recover erases all user flash memory, so it will erase all the areas that --eraseall and --chiperase erase, also UICR, in addition to the readback protection mechanism.

Best regards,

Marte

[erickcinco]

Thank you for the clarification.