5340 protect programs from theft

[yoyou]

Hello

NCS2.0.2, nRF5340, VScode

when download hex to 5340.

how to read out it?

and how to prohibit read out?

protect programs from theft.

          

Best regards

[Priyanka]

Hi,

You can read the hex files using the nRF Connect for Desktop -> Programmer App, or using nrfjprog.

nrfjprog --readcode app_flash_dump.hex --coprocessor CP_NETWORK

In order to prevent readout, you can enable the APPROTECT. It is disabled in most of our samples.

Best Regards,

Priyanka

[yoyou]

Hi

thanks for reply

about APPROTECT.  i do't know how to write code.

Best regards

[Priyanka]

Hi,

You can refer this guide.

-Priyanka

[yoyou]

Hi

thanks for reply.

i have a look it,

the follow code is for nRF SDK,  but i'm using NCS2.0

#ifdef ENABLE_APPROTECT
	if ((NRF_UICR->APPROTECT & UICR_APPROTECT_PALL_Msk) !=
		(UICR_APPROTECT_PALL_Enabled << UICR_APPROTECT_PALL_Pos)) {

        NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen;
        while (NRF_NVMC->READY == NVMC_READY_READY_Busy){}

        NRF_UICR->APPROTECT = ((NRF_UICR->APPROTECT & ~((uint32_t)UICR_APPROTECT_PALL_Msk)) |
		    (UICR_APPROTECT_PALL_Enabled << UICR_APPROTECT_PALL_Pos));

        NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren;
        while (NRF_NVMC->READY == NVMC_READY_READY_Busy){}
   	}
#else
	if ((NRF_UICR->APPROTECT & UICR_APPROTECT_PALL_Msk) !=
		(UICR_APPROTECT_PALL_HwDisabled << UICR_APPROTECT_PALL_Pos)) {

        NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen;
        while (NRF_NVMC->READY == NVMC_READY_READY_Busy){}

        NRF_UICR->APPROTECT = ((NRF_UICR->APPROTECT & ~((uint32_t)UICR_APPROTECT_PALL_Msk)) |
		    (UICR_APPROTECT_PALL_HwDisabled << UICR_APPROTECT_PALL_Pos));

        NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren;
        while (NRF_NVMC->READY == NVMC_READY_READY_Busy){}
	}
#endif

   

Best regards

[Priyanka]

Sorry, I had shared the wrong link. Fat fingers!

Here's the link:  Allowing debugger access to nRF5340