NRF52832 readback protection HEX or code from app

[dots123]

Hi,

Does anyone have a hex code that can be added to the app hex in order to get rbp for NRF52832? Or a code that can be used from Arduino IDE?

I know that it can be done with nrfjprog. But a hex code will be more efficient for me.

Thanks!

[Jørgen Holmefjord]

Hi,

Readback protection in nRF52832 is enabled by writing the APPROTECT register in UICR. 

You will not be able to flash any application to the chip after this register have been written, so you should write your application before writing this register.

I have attached HEX-file that will write 0x00000000 to the APPROTECT UICR register: UICR_APPROTECT_clear.hex

Best regards,
Jørgen

[dots123]

Thank you!

My intention is to merge this hex with my app hex file. So I'll write them in the same time. I think it's ok this way.

Jørgen Holmefjord said:

You will not be able to flash any application to the chip after this register have been written

You want to say that I can't erase all chip after I write this register? Or I can't recover the chip with nrfgprog -recover?

[Jørgen Holmefjord]

You can still recover the device to remove the readback protection.