How to read NRF52840 HW SOC Revision in application ?

[Deep Patel]

Hello,

The part i am using is NRF52840 Rev 2 (Build Code Dx0)

How can i exact know what revision or build code the SOC has ?

I want to determine in application what revision of SOC my product has and perform different task. (Perform APPROTECT steps differently).

I know that by reading FICR register in application i can get the details of the SOC HW versions.

I dont see a Description of Dx0 or Fx0 in INFO.VARIANT register of FICR registers

Sample code if you can provide.

Thanks.

[Jared]

Hi there,

You can read the FICR for example by:

#include <zephyr.h>
#include <inttypes.h>

void main(void)
{

	uint32_t a = NRF_FICR->INFO.VARIANT;
	printk("This board has the variant %" PRIu32 "\n", a);
}

Devices that return AAF0(0x41414530/1094796592) and AAFA(0x41414541/1094796609) has the latest app protect fix. 

regards

Jared 

[Deep Patel]

Thanks. That works.