Example code to store a 9 digits serial number in UICR

[Learner]

Hello,

I would like to use the UICR customer registers to store our devices serial numbers. 

Can you please point me to some example code for nRF52833 SoC.

I am using nRF Connect SDK v1.7.0.

Thank you for your help.

Kind regards

Mohamed

[haakonsh]

#include <zephyr.h>
#include <nrfx_nvmc.h>

void main(void)
{
	nrfx_nvmc_word_write(&NRF_UICR->CUSTOMER[0], 0x00);
	
	return;
}

I believe this code snippet should write 0x00 to the first customer register in UICR. 

BTW, you can use the BLE address in DEVICEID[n] as a serial number for your devices, they are unique 64bit addresses. That way you can easily find the serial number of the device OTA. 

[Learner]

Thank you Haakonsh.

I am using NVS to access the SoC internal flash. Is there an equivalent NVS function I can use?

Thank you for the tip regarding using the BLE address as a serial number.

Kind regards

Mohamed

[Simon]

Hello Mohamed,

What is the current state on this issue?

Best regards,

Simon

[Learner]

Hi Simon,

Although I can write to and read from UICR I am still facing the problem of the UICR content being erased (on nRF52833 QDAAA0 SoC)

1- After I start a debug session in SES v5.60

2- Or use nRF Programmer v2.3.3 to flash a merged,hex image

This is now being dealt under Case ID: 290765.

Kind regards

Mohamed

[Simon]

Learner said:

This is now being dealt under Case ID: 290765.

Do you want to continue the discussion there, and close this ticket?

Best,

Simon

[Learner]

Yes, pleas close it because I don't know how to.

[Simon Feutrier]

Hello Simon ,

Where can I find the solution? I do not find the Case ID: 290765.

Can you give me some inputs?

Regards

Simon