How to check the presence of 32.768 kHz crystal

[cristian.anceschi]

Hi all

I have developed a project on the nRF51-DK board based on the proprietary RF protocol.

Now I have a custom PCB board always with an nRF51822 but only equipped with a 16MHz crystal.

I would like to distinguish between nrf51-dk and my custom board via software without, if possible, changing the hardware.

Is it possible to verify whether the 32.768 kHz crystal is present or not (in my case present only on the nRF51-DK)?

If so, what would be the best way to do it?

Environment :

nRF51_SDK_7.2.0_cf547b5
s110_nRF51822_7.1.0.hex

Thanks in advance for your support

Kind regards

Cristian

[cristian.anceschi]

Many thanks Kenneth.

The code, reported on the link you send, works properly for me.

Many thanks for your support

Kind regards

Cristian