nRF Connect, APPROTECT

RE: nRF Connect, APPROTECT

basvkesteren — Fri, 23 Apr 2021 13:43:10 GMT

Okay, far enough,

thanks!

RE: nRF Connect, APPROTECT

Håkon Alseth — Fri, 23 Apr 2021 13:06:19 GMT

At this moment, such a solution would require a custom linker script where you define the uicr section, which is possible, but not recommended.

I am afraid that the easiest thing to do is to either program via nrfjprog, or add a small snippet in your firmware that checks the APPROTECT field and writes to it if it is not set (and does a reset).

Kind regards,

Håkon

RE: nRF Connect, APPROTECT

basvkesteren — Thu, 22 Apr 2021 12:26:46 GMT

The appropriate way to place something on a absolute address is to use a linker script, but: there's no uicr section defined as a linker section, meaning that if you try this you will get an out-of-bounds error when linking your program.

Indeed. I was hoping for some pointers on how to define a new section. I know my way around gcc linkerscripts, but don't now how to do this when using the ncs toolchain..

Using nrfjprog is another option, but yet one more step to take in the programming sequence. I was (still am :)) hoping for a single 'burn hex, boot, done' sequence.

RE: nRF Connect, APPROTECT

Håkon Alseth — Thu, 22 Apr 2021 12:16:54 GMT

Hi,

The appropriate way to place something on a absolute address is to use a linker script, but: there's no uicr section defined as a linker section, meaning that if you try this you will get an out-of-bounds error when linking your program.

You can call "nrfjprog --rbp ALL && nrfjprog --reset" to readback protect and reset the device (to latch the new configuration).

Kind regards,

Håkon