nRF52832 revision 3

RE: nRF52832 revision 3

Amanda Hsieh — Wed, 17 Nov 2021 08:02:05 GMT

Hi,

nRF52832 rev3 is added in SDK 17.1.0 which contains system_nrf52_approtect.h.

You can bundle --program with --recover.

Can you try this ?

nrfjprog.exe -f NRF52 --program xxx.hex --recover

This approach ensures that the FW is written directly after the CTRLAP->ERASEALL (--recover), which makes it so that the intermediate unlocking image is not needed.

The intermedia unlocking image must be removed when programming your fw image, hence a sector erase or page erase could in fact be used instead of eraseall if not bundling the commands after each other as proposed above.

-Amanda

RE: nRF52832 revision 3

Август — Wed, 17 Nov 2021 00:55:44 GMT

Thanks for your quick response,but I can't find system_nrf52_approtect.h.

Because APPROTECT has been enabled. You need the --recover when APPROTECT has been enabled, which means you will need it after power cycling / pin resetting a device with empty flash.

But I have to use the following two commands.

nrfjprog.exe -f NRF52 --recover
nrfjprog.exe -f NRF52 --eraseall

RE: nRF52832 revision 3

Amanda Hsieh — Tue, 16 Nov 2021 12:59:21 GMT

Hi,

[quote user=""]Can I use nrfjprog.exe --eraseall?[/quote]

Yes.

[quote user=""]I am using armgcc and segger? Can I do it like this picture below? [/quote]

Yes.

[quote user=""]I search all the project but I can't find ENABLE_APPROTECT，why？[/quote]

It's in the system_nrf52_approtect.h under nRF5_SDK_17.1.0_ddde560\modules\nrfx\mdk

[quote user="xinglog"]Why can't the program be run using the following command[/quote]

Because APPROTECT has been enabled. You need the --recover when APPROTECT has been enabled, which means you will need it after power cycling / pin resetting a device with empty flash.

Regards,
Amanda

RE: nRF52832 revision 3

Август — Tue, 16 Nov 2021 11:43:08 GMT

Why can't the program be run using the following command
nrfjprog.exe -f NRF52 --recover
nrfjprog.exe -f NRF52 --program xxx.hex
nrfjprog.exe -f NRF52 --reset

Need to use the following instructions to burn to run
nrfjprog.exe -f NRF52 --recover
nrfjprog.exe -f NRF52 --eraseall
nrfjprog.exe -f NRF52 --program xxx.hex
nrfjprog.exe -f NRF52 --reset